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EP450™
Portable Radio
Detailed Service Manual
MOTOROLA, The Stylized M logo are trademarks of Motorola, Inc.
All other product or service names are the property of their respective owners.
© 2003 Motorola, Inc. All rights reserved. Printed in U.S.A.
HKLN4216A
HKLN4216A
EP450 Portable Radio
Detailed Service Manual
VHF 146-174 MHz
UHF 403-440 MHz
UHF 438-470 MHz
UHF 465-495 MHz
Motorola, Inc.
1301 E. Algonquin Road
Schaumburg, IL 60196
HKLN4216A
ii
Foreword
This manual is intended for use by service technicians familiar with portable two-way radios. It contains
service information required for the equipment described and is current as of the printing date. Changes which
occur after the printing date may be incorporated by a complete Manual revision or alternatively as additions
Product Safety and RF Exposure Compliance
!
Note:
Before using this product, read the operating instructions for safe usage contained in the
Product Safety and RF Exposure booklet enclosed with your radio.
Caution
ATTENTION!
This radio is restricted to occupational use only to satisfy FCC RF energy exposure requirements.
Before using this product, read the RF energy awareness information and operating instructions in the
Product Safety and RF Exposure booklet enclosed with your radio (Motorola Publication part number
68P81068810) to ensure compliance with RF energy exposure limits.
For a list of Motorola-approved antennas, batteries, and other accessories, visit the following web site which
lists approved accessories: http://www.motorola.com/cgiss/index.shtml.
Computer Software Copyrights
The Motorola products described in this manual may include copyrighted Motorola computer programs stored
in semiconductor memories or other media. Laws in the United States and other countries preserve for
Motorola certain exclusive rights for copyrighted computer programs, including, but not limited to, the
exclusive right to copy or reproduce in any form the copyrighted computer program. Accordingly, any
copyrighted Motorola computer programs contained in the Motorola products described in this manual may
not be copied, reproduced, modified, reverse-engineered, or distributed in any manner without the express
written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant
either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent
applications of Motorola, except for the normal non-exclusive license to use that arises by operation of law in
the sale of a product.
Document Copyrights
No duplication or distribution of this document or any portion thereof shall take place without the express
written permission of Motorola. No part of this manual may be reproduced, distributed, or transmitted in any
form or by any means, electronic or mechanical, for any purpose without the express written permission of
Motorola.
Disclaimer
The information in this document is carefully examined, and is believed to be entirely reliable. However, no
responsibility is assumed for inaccuracies. Furthermore, Motorola reserves the right to make changes to any
products herein to improve readability, function, or design. Motorola does not assume any liability arising out
of the applications or use of any product or circuit described herein; nor does it cover any license under its
patent rights nor the rights of others.
MOTOROLA, The Stylized M logo are trademarks of Motorola, Inc.
All other product or service names are the property of their respective owners.
© 2003 Motorola, Inc. All rights reserved. Printed in U.S.A.
Table of Contents
iii
Table of Contents
Foreword............................................................................................................................................ii
Product Safety and RF Exposure Compliance ..................................................................................ii
Computer Software Copyrights..........................................................................................................ii
Document Copyrights ........................................................................................................................ii
Disclaimer ..........................................................................................................................................ii
List of Figures .............................................................................................viii
List of Tables .................................................................................................ix
Related Publications ......................................................................................x
Module 1: VHF 146-174 MHz
Chapter 1
1.1
1.2
Test Equipment.............................................................................................................................. 1-1
Service Aids................................................................................................................................... 1-2
Chapter 2
2.1
DC Power Distribution ........................................................ 2-1
DC Regulation and Distribution ..................................................................................................... 2-1
Chapter 3
3.1
Test Equipment, Service Aids, and
Service Tools....................................................................... 1-1
Controller Theory of Operation.......................................... 3-1
Controller ....................................................................................................................................... 3-1
3.1.1 Microprocessor Circuitry ................................................................................................... 3-1
3.1.1.1 Memory Usage ........................................................................................................ 3-2
3.1.1.2 Control and Indicator Interface ................................................................................ 3-2
3.1.1.3 Serial Bus Control of Circuit Blocks ......................................................................... 3-2
3.1.1.4 Interface to RSS Programming................................................................................ 3-3
3.1.1.5 Storage of Customer-Specific Information............................................................... 3-3
3.1.1.6 Sensing of Externally-Connected Accessories ........................................................ 3-3
3.1.1.7 Microprocessor Power-Up, Power-Down and Reset Routine.................................. 3-3
3.1.1.8 Boot Mode Control................................................................................................... 3-4
3.1.1.9 Microprocessor 7.3975 MHz Clock.......................................................................... 3-4
3.1.1.10 Battery Gauge.......................................................................................................... 3-4
3.1.2 Audio Circuitry .................................................................................................................. 3-4
3.1.2.1 Transmit and Receive Low-Level Audio Circuitry .................................................... 3-4
3.1.2.2 Audio Power Amplifier ............................................................................................. 3-5
3.1.2.3 Internal Microphone Audio Voice Path .................................................................... 3-5
3.1.2.4 PTT Circuits ............................................................................................................. 3-6
3.1.2.5 VOX Operation ........................................................................................................ 3-6
3.1.2.6 Programming and Flashing Through Microphone Jack ........................................... 3-6
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Table of Contents
Chapter 4
4.1
4.2
4.3
4.4
4.5
Introduction .................................................................................................................................... 4-1
VHF Receiver................................................................................................................................. 4-1
4.2.1 Receiver Front-End........................................................................................................... 4-1
4.2.2 Receiver Back-End ........................................................................................................... 4-2
VHF Transmitter............................................................................................................................. 4-3
4.3.1 Transmit Power Amplifier .................................................................................................. 4-3
4.3.2 Antenna Switch ................................................................................................................. 4-3
4.3.3 Harmonic Filter.................................................................................................................. 4-3
4.3.4 Antenna Matching Network............................................................................................... 4-4
4.3.5 Power Control ................................................................................................................... 4-4
VHF Frequency Generation Circuitry............................................................................................. 4-4
4.4.1 Fractional-N Synthesizer................................................................................................... 4-5
4.4.2 Voltage Controlled Oscillator (VCO) ................................................................................. 4-6
Keypad........................................................................................................................................... 4-7
Chapter 5
5.1
5.2
5.3
5.4
VHF Theory Of Operation ................................................... 4-1
VHF Troubleshooting Tables ............................................. 5-1
Troubleshooting Table for Receiver............................................................................................... 5-1
Troubleshooting Table for Synthesizer .......................................................................................... 5-3
Troubleshooting Table for Transmitter........................................................................................... 5-4
Troubleshooting Table for Board and IC Signals ........................................................................... 5-6
Chapter 6
VHF Schematic Diagrams, Overlays, and Parts Lists...... 6-1
6.1
Introduction .................................................................................................................................... 6-1
6.1.1 Notes For All Schematics and Circuit Boards ................................................................... 6-1
6.1.2 Six Layer Circuit Board ..................................................................................................... 6-3
6.2 Speaker and Microphone Schematic ............................................................................................. 6-3
6.2.1 Speaker and Microphone Parts List.................................................................................. 6-3
Figure 6-3.
VHF (146-174 MHz) Radio Circuit Block Interconnect Diagram....................................... 6-5
Figure 6-4.
VHF (146-174 MHz) Receiver Front End Schematic Diagram ......................................... 6-6
Figure 6-5.
VHF (146-174 MHz) Receiver Back End Schematic Diagram ......................................... 6-7
Figure 6-6.
VHF (146-174 MHz) Synthesizer Schematic Diagram ..................................................... 6-8
Figure 6-7.
VHF (146-174 MHz) Voltage Controlled Oscillator Schematic Diagram .......................... 6-9
Figure 6-8.
VHF (146-174 MHz) Transmitter and Power Control Schematic Diagram ..................... 6-10
Figure 6-9.
VHF (146-174 MHz) Controller Interconnect Schematic Diagram.................................. 6-11
Figure 6-10. VHF (146-174 MHz) Microprocessor Circuitry Schematic Diagram ............................... 6-12
Figure 6-11. VHF (146-174 MHz) Audio Circuitry Schematic Diagram............................................... 6-13
Figure 6-12. VHF (146-174 MHz) DC Regulation Schematic Diagram.............................................. 6-14
Figure 6-13. VHF (146-174 MHz) Keypad Board Schematic Diagram ............................................... 6-15
Figure 6-14. VHF (146-174 MHz) Board Component Side View ........................................................ 6-16
Figure 6-15. VHF (146-174 MHz) Board Solder Side View ................................................................ 6-17
Figure 6-16. VHF (146-174 MHz) Keypad Board................................................................................ 6-18
VHF (146-174 MHz) Radio Parts List .................................................................................................... 6-19
VHF (146-174 MHz) Keypad Board Parts List....................................................................................... 6-22
November 24, 2003
HKLN4216A
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v
Module 2: UHF 403-440, 438-470, 465-495 MHz
Chapter 7
7.1
7.2
7.3
7.4
7.5
Introduction .................................................................................................................................... 7-1
UHF Receiver ................................................................................................................................ 7-1
7.2.1 Receiver Front End ........................................................................................................... 7-1
7.2.2 Receiver Back End ........................................................................................................... 7-2
UHF Transmitter ............................................................................................................................ 7-3
7.3.1 Transmitter Power Amplifier ............................................................................................. 7-3
7.3.2 Antenna Switch ................................................................................................................. 7-3
7.3.3 Harmonic Filter ................................................................................................................. 7-3
7.3.4 Antenna Matching Network............................................................................................... 7-4
7.3.5 Power Control ................................................................................................................... 7-4
UHF Frequency Generation Circuitry ............................................................................................ 7-4
7.4.1 Fractional-N Synthesizer .................................................................................................. 7-5
7.4.2 Voltage Controlled Oscillator (VCO) ................................................................................. 7-6
Keypad........................................................................................................................................... 7-7
Chapter 8
8.1
8.2
8.3
8.4
8.5
9.3
9.4
9.5
438-470 MHz UHF Theory Of Operation ............................ 8-1
Introduction .................................................................................................................................... 8-1
UHF Receiver ................................................................................................................................ 8-1
8.2.1 Receiver Front End ........................................................................................................... 8-1
8.2.2 Receiver Back End ........................................................................................................... 8-2
UHF Transmitter ............................................................................................................................ 8-3
8.3.1 Transmitter Power Amplifier ............................................................................................. 8-3
8.3.2 Antenna Switch ................................................................................................................. 8-3
8.3.3 Harmonic Filter ................................................................................................................. 8-3
8.3.4 Antenna Matching Network............................................................................................... 8-4
8.3.5 Power Control ................................................................................................................... 8-4
UHF Frequency Generation Circuitry ............................................................................................ 8-4
8.4.1 Fractional-N Synthesizer .................................................................................................. 8-5
8.4.2 Voltage Controlled Oscillator (VCO) ................................................................................. 8-6
Keypad........................................................................................................................................... 8-7
Chapter 9
9.1
9.2
403-440 MHz UHF Theory Of Operation ............................ 7-1
465-495 MHz UHF Theory Of Operation ............................ 9-1
Introduction .................................................................................................................................... 9-1
UHF Receiver ................................................................................................................................ 9-1
9.2.1 Receiver Front End ........................................................................................................... 9-1
9.2.2 Receiver Back End ........................................................................................................... 9-2
UHF Transmitter ............................................................................................................................ 9-3
9.3.1 Transmitter Power Amplifier ............................................................................................. 9-3
9.3.2 Antenna Switch ................................................................................................................. 9-3
9.3.3 Harmonic Filter ................................................................................................................. 9-3
9.3.4 Antenna Matching Network............................................................................................... 9-4
9.3.5 Power Control ................................................................................................................... 9-4
UHF Frequency Generation Circuitry ............................................................................................ 9-4
9.4.1 Fractional-N Synthesizer .................................................................................................. 9-5
9.4.2 Voltage Controlled Oscillator (VCO) ................................................................................. 9-6
Keypad........................................................................................................................................... 9-7
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Table of Contents
Chapter 10
10.1
10.2
10.3
10.4
UHF Troubleshooting Tables ........................................... 10-1
Troubleshooting Table for Receiver............................................................................................. 10-1
Troubleshooting Table for Synthesizer ........................................................................................ 10-3
Troubleshooting Table for Transmitter......................................................................................... 10-4
Troubleshooting Table for Board and IC Signals ......................................................................... 10-6
Chapter 11
UHF Schematic Diagrams, Overlays, and Parts Lists ... 11-1
11.1 Introduction .................................................................................................................................. 11-1
11.1.1 Notes For All Schematics and Circuit Boards ................................................................. 11-1
11.1.2 Six Layer Circuit Board ................................................................................................... 11-3
11.2 Speaker and Microphone Schematic ........................................................................................... 11-3
11.2.1 Speaker and Microphone Parts List................................................................................ 11-3
UHF 403-440 MHz Schematic Diagrams, Overlays,
and Parts Lists .................................................................. 11-5
Figure 11-3. UHF (403-440 MHz) Radio Circuit Block Diagram ......................................................... 11-5
Figure 11-4. UHF (403-440 MHz) Receiver Front End Schematic Diagram....................................... 11-6
Figure 11-5. UHF (403-440 MHz) Receiver Back End Schematic Diagram ....................................... 11-7
Figure 11-6. UHF (403-440 MHz) Synthesizer Schematic Diagram ................................................... 11-8
Figure 11-7. UHF (403-440 MHz) Voltage Controlled Oscillator Schematic Diagram ........................ 11-9
Figure 11-8. UHF (403-440 MHz) Transmitter and Power Control Schematic Diagram................... 11-10
Figure 11-9. UHF (403-440 MHz) Controller Interconnect Schematic Diagram ............................... 11-11
Figure 11-10. UHF (403-440 MHz) Microprocessor Circuitry Schematic Diagram ............................. 11-12
Figure 11-11. UHF (403-440 MHz) Audio Circuitry Schematic Diagram ............................................ 11-13
Figure 11-12. UHF (403-440 MHz) DC Regulation Schematic Diagram ............................................ 11-14
Figure 11-13. UHF (403-440 MHz) Keypad Board Schematic Diagram ............................................. 11-15
Figure 11-14. UHF (403-440 MHz) Board Component Side View ...................................................... 11-16
Figure 11-15. UHF (403-440 MHz) Board Solder Side View .............................................................. 11-17
Figure 11-16. UHF (403-440 MHz) Keypad Board ............................................................................. 11-18
UHF (403-440 MHz) Radio Parts List .................................................................................................. 11-19
UHF (403-440 MHz) Keypad Board Parts List..................................................................................... 11-22
UHF 438-470 MHz Schematic Diagrams, Overlays,
and Parts Lists ................................................................ 11-23
Figure 11-17.
Figure 11-18.
Figure 11-19.
Figure 11-20.
Figure 11-21.
Figure 11-22.
Figure 11-23.
Figure 11-24.
Figure 11-25.
Figure 11-26.
Figure 11-27.
Figure 11-28.
Figure 11-29.
UHF (438-470 MHz) Radio Circuit Block Diagram ....................................................... 11-23
UHF (438-470 MHz) Receiver Front End Schematic Diagram..................................... 11-24
UHF (438-470 MHz) Receiver Back End Schematic Diagram ..................................... 11-25
UHF (438-470 MHz) Synthesizer Schematic Diagram ................................................. 11-26
UHF (438-470 MHz) Voltage Controlled Oscillator Schematic Diagram ...................... 11-27
UHF (438-470 MHz) Transmitter and Power Control Schematic Diagram................... 11-28
UHF (438-470 MHz) Controller Interconnect Schematic Diagram ............................... 11-30
UHF (438-470 MHz) Microprocessor Circuitry Schematic Diagram ............................. 11-31
UHF (438-470 MHz) Audio Circuitry Schematic Diagram ............................................ 11-32
UHF (438-470 MHz) DC Regulation Schematic Diagram ............................................ 11-33
UHF (438-470 MHz) Keypad Board Schematic Diagram ............................................. 11-34
UHF (438-470 MHz) Board Component Side View ...................................................... 11-35
UHF (438-470 MHz) Board Solder Side View .............................................................. 11-36
November 24, 2003
HKLN4216A
Table of Contents
vii
UHF (438-470 MHz) Radio Parts List.................................................................................................. 11-37
UHF (438-470 MHz) Keypad Board Parts List .................................................................................... 11-40
UHF 465-495 MHz Schematic Diagrams, Overlays,
and Parts Lists ................................................................ 11-41
Figure 11-30. UHF (465-495 MHz) Radio Circuit Block Diagram ....................................................... 11-41
Figure 11-31. UHF (465-495 MHz) Receiver Front End Schematic Diagram..................................... 11-42
Figure 11-32. UHF (465-495 MHz) Receiver Back End Schematic Diagram ..................................... 11-43
Figure 11-33. UHF (465-495 MHz) Synthesizer Schematic Diagram................................................. 11-44
Figure 11-34. UHF (465-495 MHz) Voltage Controlled Oscillator Schematic Diagram ...................... 11-45
Figure 11-35. UHF (465-495 MHz) Transmitter and Power Control Schematic Diagram................... 11-46
Figure 11-36. UHF (465-495 MHz) Controller Interconnect Schematic Diagram ............................... 11-47
Figure 11-37. UHF (465-495 MHz) Microprocessor Circuitry Schematic Diagram............................. 11-48
Figure 11-38. UHF (465-495 MHz) Audio Circuitry Schematic Diagram ............................................ 11-49
Figure 11-39. UHF (465-495 MHz) DC Regulation Schematic Diagram ............................................ 11-50
Figure 11-40. UHF (465-495 MHz) Keypad Board Schematic Diagram............................................. 11-51
Figure 11-41. UHF (465-495 MHz) Board Component Side View...................................................... 11-52
Figure 11-42. UHF (465-495 MHz) Board Solder Side View .............................................................. 11-53
Figure 11-43. UHF (465-495 MHz) Keypad Board ............................................................................. 11-54
UHF (465-495 MHz) Radio Parts List.................................................................................................. 11-55
UHF (465-495 MHz) Keypad Board Parts List .................................................................................... 11-58
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November 24, 2003
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Table of Contents
List of Figures
Figure 1-1.
Figure 1-2.
Figure 2-1.
Figure 4-1.
Figure 4-2.
Figure 4-3.
Figure 4-4.
Figure 4-5.
Figure 4-6.
Figure 6-1.
Figure 6-2.
Figure 6-3.
Figure 6-4.
Figure 6-5.
Figure 6-6.
Figure 6-7.
Figure 6-8.
Figure 6-9.
Figure 6-10.
Figure 6-11.
Figure 6-12.
Figure 6-13.
Figure 6-14.
Figure 6-15.
Figure 6-16.
Figure 7-1.
Figure 7-2.
Figure 7-3.
Figure 7-4.
Figure 7-5.
Figure 7-6.
Figure 8-1.
Figure 8-2.
Figure 8-3.
Figure 8-4.
Figure 8-5.
Figure 8-6.
Figure 9-1.
Figure 9-2.
Figure 9-3.
Figure 9-4.
Figure 9-5.
Figure 9-6.
Figure 11-1.
Figure 11-2.
Figure 11-3.
Figure 11-4.
Figure 11-5.
November 24, 2003
Programming/Test Cable.................................................................................................. 1-4
Wiring of the Connectors .................................................................................................. 1-4
DC Power Distribution Block Diagram.............................................................................. 2-1
VHF Receiver Block Diagram........................................................................................... 4-1
VHF Transmitter Block Diagram....................................................................................... 4-3
VHF Frequency Generation Unit Block Diagram.............................................................. 4-5
VHF Synthesizer Block Diagram ...................................................................................... 4-6
VHF VCO Block Diagram ................................................................................................. 4-7
Keypad Block Diagram ..................................................................................................... 4-7
Six-Layer Circuit Board: Copper Steps in Layer Sequence.............................................. 6-3
Speaker and Microphone Schematic................................................................................ 6-3
VHF (146-174 MHz) Radio Circuit Block Interconnect Diagram....................................... 6-5
VHF (146-174 MHz) PCB 8486342Z13-C Receiver Front End Schematic Diagram........ 6-6
VHF (146-174 MHz) Receiver Back End Schematic Diagram ......................................... 6-7
VHF (146-174 MHz) PCB 8486342Z13-C Synthesizer Schematic Diagram.................... 6-8
VHF (146-174 MHz) Voltage Controlled Oscillator Schematic Diagram .......................... 6-9
VHF (146-174 MHz) PCB 8486342Z13-C Transmitter and Power Control
Schematic Diagram ........................................................................................................ 6-10
VHF (146-174 MHz) Controller Interconnect Schematic Diagram.................................. 6-11
VHF (146-174 MHz) PCB 8486342Z13-C Microprocessor Circuitry
Schematic Diagram ........................................................................................................ 6-12
VHF (146-174 MHz) Audio Circuitry Schematic Diagram............................................... 6-13
VHF (146-174 MHz) PCB 8486342Z13-C DC Regulation Schematic Diagram ............ 6-14
VHF (146-174 MHz) Keypad Board Schematic Diagram ............................................... 6-15
VHF (146-174 MHz) PCB 8486342Z13-C Board Component Side................................ 6-16
VHF (146-174 MHz) Board Solder Side View ................................................................ 6-17
VHF (146-174 MHz) PCB 8486342Z13-C Keypad Board .............................................. 6-18
UHF Receiver Block Diagram........................................................................................... 7-1
UHF Transmitter Block Diagram....................................................................................... 7-3
UHF Frequency Generation Unit Block Diagram.............................................................. 7-5
UHF Synthesizer Block Diagram ...................................................................................... 7-6
UHF VCO Block Diagram ................................................................................................. 7-7
Keypad Block Diagram ..................................................................................................... 7-7
UHF Receiver Block Diagram........................................................................................... 8-1
UHF Transmitter Block Diagram....................................................................................... 8-3
UHF Frequency Generation Unit Block Diagram.............................................................. 8-5
UHF Synthesizer Block Diagram ...................................................................................... 8-6
UHF VCO Block Diagram ................................................................................................. 8-7
Keypad Block Diagram ..................................................................................................... 8-7
UHF Receiver Block Diagram........................................................................................... 9-1
UHF Transmitter Block Diagram....................................................................................... 9-3
UHF Frequency Generation Unit Block Diagram.............................................................. 9-5
UHF Synthesizer Block Diagram ...................................................................................... 9-6
UHF VCO Block Diagram ................................................................................................. 9-7
Keypad Block Diagram ..................................................................................................... 9-7
Six-Layer Circuit Board: Copper Steps in Layer Sequence............................................ 11-3
Speaker and Microphone Schematic.............................................................................. 11-3
UHF (403-440 MHz) Radio Circuit Block Diagram ......................................................... 11-5
UHF (403-440 MHz) PCB 8486635Z03-O Receiver Front End Schematic Diagram ..... 11-6
UHF (403-440 MHz) Receiver Back End Schematic Diagram ....................................... 11-7
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xi
Figure 11-6.
Figure 11-7.
Figure 11-8.
UHF (403-440 MHz) PCB 8486635Z03-O Synthesizer Schematic Diagram ................. 11-8
UHF (403-440 MHz) Voltage Controlled Oscillator Schematic Diagram ........................ 11-9
UHF (403-440 MHz) PCB 8486635Z03-O Transmitter and Power Control
Schematic Diagram ...................................................................................................... 11-10
UHF (403-440 MHz) Controller Interconnect Schematic Diagram ............................... 11-11
UHF (403-440 MHz) PCB 8486635Z03-O Microprocessor Circuitry
Schematic Diagram ...................................................................................................... 11-12
UHF (403-440 MHz) Audio Circuitry Schematic Diagram ............................................ 11-13
UHF (403-440 MHz) PCB 8486635Z03-O DC Regulation Schematic Diagram........... 11-14
UHF (403-440 MHz) Keypad Board Schematic Diagram............................................. 11-15
UHF (403-440 MHz) PCB 8486635Z03-O Board Component Side View .................... 11-16
UHF (403-440 MHz) Board Solder Side View .............................................................. 11-17
UHF (403-440 MHz) PCB 8486635Z03-O Keypad Board............................................ 11-18
UHF (438-470 MHz) Radio Circuit Block Diagram ....................................................... 11-23
UHF (438-470 MHz) PCB 8486348Z13-C Receiver Front End Schematic Diagram ... 11-24
UHF (438-470 MHz) Receiver Back End Schematic Diagram ..................................... 11-25
UHF (438-470 MHz) PCB 8486348Z13-C Synthesizer Schematic Diagram ............... 11-26
UHF (438-470 MHz) Voltage Controlled Oscillator Schematic Diagram ...................... 11-27
UHF (438-470 MHz) PCB 8486348Z13-C Transmitter and Power Control
Schematic Diagram ...................................................................................................... 11-28
UHF (438-470 MHz) PCB 8486348Z13-C Controller Interconnect
Schematic Diagram ...................................................................................................... 11-30
UHF (438-470 MHz) Microprocessor Circuitry Schematic Diagram ............................ 11-31
UHF (438-470 MHz) PCB 8486348Z13-C Audio Circuitry Schematic Diagram ........... 11-32
UHF (438-470 MHz) DC Regulation Schematic Diagram ............................................ 11-33
UHF (438-470 MHz) PCB 8486348Z13-C Keypad Option Schematic Diagram .......... 11-34
UHF (438-470 MHz) Board Component Side View...................................................... 11-35
UHF (438-470 MHz) PCB 8486348Z13-C Board Solder Side View............................. 11-36
UHF (438-470 MHz) Keypad Board ............................................................................. 11-36
UHF (465-495 MHz) Radio Circuit Block Diagram ....................................................... 11-41
UHF (465-495 MHz) PCB8486634Z02-O Receiver Front End Schematic Diagram .... 11-42
UHF (465-495 MHz) Receiver Back End Schematic Diagram ..................................... 11-43
UHF (465-495 MHz) PCB8486634Z02-O Synthesizer Schematic Diagram ................ 11-44
UHF (465-495 MHz) Voltage Controlled Oscillator Schematic Diagram ...................... 11-45
UHF (465-495 MHz) PCB8486634Z02-O Transmitter and Power Control
Schematic Diagram ...................................................................................................... 11-46
UHF (465-495 MHz) Controller Interconnect Schematic Diagram ............................... 11-47
UHF (465-495 MHz) PCB8486634Z02-O Microprocessor Circuitry
Schematic Diagram ...................................................................................................... 11-48
UHF (465-495 MHz) Audio Circuitry Schematic Diagram ............................................ 11-49
UHF (465-495 MHz) PCB8486634Z02-O DC Regulation Schematic Diagram............ 11-50
UHF (465-495 MHz) Keypad Board Schematic Diagram............................................. 11-51
UHF (465-495 MHz) PCB8486634Z02-O Board Component Side View ..................... 11-52
UHF (465-495 MHz) Board Solder Side View .............................................................. 11-53
UHF (465-495 MHz) PCB8486634Z02-O Keypad Board............................................. 11-54
Figure 11-9.
Figure 11-10.
Figure 11-11.
Figure 11-12.
Figure 11-13.
Figure 11-14.
Figure 11-15.
Figure 11-16.
Figure 11-17.
Figure 11-18.
Figure 11-19.
Figure 11-20.
Figure 11-21.
Figure 11-22.
Figure 11-23.
Figure 11-24.
Figure 11-25.
Figure 11-26.
Figure 11-27.
Figure 11-28.
Figure 11-29.
Figure 11-30.
Figure 11-30.
Figure 11-31.
Figure 11-32.
Figure 11-33.
Figure 11-34.
Figure 11-35.
Figure 11-36.
Figure 11-37.
Figure 11-38.
Figure 11-39.
Figure 11-40.
Figure 11-41.
Figure 11-42.
Figure 11-43.
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November 24, 2003
xii
Table of Contents
List of Tables
Table 1-1.
Table 1-2.
Table 1-3.
Table 2-1.
Table 3-1.
Table 3-2.
Table 5-1.
Table 5-2.
Table 5-3.
Table 5-4.
Table 10-1.
Table 10-2.
Table 10-3.
Table 10-4.
Recommended Test Equipment ....................................................................................... 1-1
Service Aids...................................................................................................................... 1-2
Recommended Service Tools .......................................................................................... 1-2
Voltage Regulators ........................................................................................................... 2-2
Radio Memory Requirements........................................................................................... 3-1
SPI Bus Signal Definitions................................................................................................ 3-2
Troubleshooting Table for Receiver ................................................................................. 5-1
Troubleshooting Table for Synthesizer............................................................................. 5-3
Troubleshooting Table for Transmitter ............................................................................. 5-4
Troubleshooting Table for Board and IC Signals.............................................................. 5-7
Troubleshooting Table for Receiver ............................................................................... 10-1
Troubleshooting Table for Synthesizer........................................................................... 10-3
Troubleshooting Table for Transmitter ........................................................................... 10-4
Troubleshooting Table for Board and IC Signals............................................................ 10-6
Related Publications
E-Series Basic Service Manual..........................................................................................................HKLN4215
E-Series Interactive User CD .............................................................................................................HKLN4212
Product Safety and RF Exposure Compliance................................................................................6881095C98
November 24, 2003
HKLN4216A
Chapter 1 Test Equipment, Service Aids, and
Service Tools
1.1
Test Equipment
Table 1-1 lists test equipment required to service the EP450 Radios.
Table 1-1. Recommended Test Equipment
Motorola Part No.
Description
Characteristics
This item will substitute for
items with an asterisk (*)
Application
R2600 series
System analyzer
Frequency/deviation meter and
signal generator for wide-range
troubleshooting and alignment
*R1074
Fluke 87 digital multi- True RMS metering,
meter
200 kHz frequency
counter, 32-segment bar
graph with backlit display
Digital voltmeter is recommended for AC/DC voltage and
current measurements
Fluke 85 RF probe
500 MHz, 30 VAC max
Use with Fluke 87 digital multimeter for RF voltage measurements.
*R1377
AC voltmeter
1 mV to 300 mV, 10 megaohm input impedance
Audio voltage measurements
R1611
Dual channel
100 MHz oscilloscope (Agillent)
Two-channel, 100 MHz
bandwidth, 200 M sample
rate/sec, 2 MB memory/
channel
Waveform measurements
S1339
RF millivolt meter
100 µV to 3V RF, 10 kHz to
1 GHz frequency range
RF level measurements
*R1013 or
SINAD meter or
*R1370
SINAD meter with
RMS
Without RMS audio voltme- Receiver sensitivity measureter or
ments
With RMS audio voltmeter
1-2
1.2
Test Equipment, Service Aids, and Service Tools: Service Aids
Service Aids
Table 1-2 lists service aids recommended for working on the EP450 Radios. While all of these items
are available from Motorola, most are standard shop equipment items, and any equivalent item
capable of the same performance may be substituted for the item listed.
Table 1-2. Service Aids
Motorola Part
No.
Description
Application
RLN4460
Portable Test Set
Enables connection to the audio/accessory jack.
Allows switching for radio testing.
RLN4510
Battery Interface
Regulates DC current and voltage between radio and
power supply.
RVN4195
Customer Programming Software and Tuner Software on CD
Rom
Program customer option and channel data.
AAPMKN4004
Programming Test Cable
Connects radio to RIB (RLN4008).
AAPMKN4003
Radio-to-Radio Cloning Cable
Allows a radio to be duplicated from a master radio by
transferring programmed data from the master radio to
the other.
RLN4008
Radio Interface Box
Enables communications between the radio and the
computer’s serial communications adapter.
5886564Z01
RF Adaptor
Adapts radio’s antenna port to BNC cabling of test
equipment.
0180305K08
Shop Battery Eliminator
Interconnects radio to power supply.
HSN9412
Wall-Mounted Power Supply
Used to supply power to the RIB (120 VAC).
3080369B71 or Computer Interface Cable
3080369B72
Use B72 for the IBM PC AT or newer (9-pin serial
port). Use B71 for older models (25-pin serial port).
Connects the computer’s serial communications
adapter to the RIB (PLN4008).
6686533Z01
Knob Remover/Chassis Opener
Used to remove the front cover assembly.
HKN9216
IBM Computer Interface Cable
Connection from computer to RIB.
8180384N65
Housing Eliminator
Allows testing of the radio outside of the housing.
RLN5583
Flashing Adapter
Flashing/CPS cable for Authorized Service Centers
Table 1-3. Recommended Service Tools
Motorola Part
No.
Description
Application
RSX4043
TORX screwdriver
Tighten and remove chassis screws
6680387A70
T6 TORX bit
Removable TORX screwdriver bit
R1453
Digital readout solder station
Digitally controlled soldering iron
November 24, 2003
HKLN4216A
Test Equipment, Service Aids, and Service Tools: Service Aids
1-3
Table 1-3. Recommended Service Tools (Continued)
Motorola Part
No.
Description
RLN4062
Hot air workstation, 120 V
0180386A78
Illuminated magnifying glass with
lens attachment
0180302E51
Master lens system
0180386A82
Anti-static grounding kit
6684253C72
Straight prober
6680384A98
Brush
1010041A86
Solder (RMA type), 63/67,
0.5mm diameter, 1 lb. spool
0180303E45
SMD tool kit (included with
R1319A)
R1319
ChipMaster (110 V)
R1321
ChipMaster (220 V)
Application
Tool for hot air soldering/desoldering of surface
mounted integrated circuits
Illumination and magnification of components
Used during all radio assembly and disassembly procedures
Surface mount removal and assembly of surface
mounted integrated circuits and/or rework station
shields. Includes 5 nozzles.
ChipMaster Nozzles:
6680332E83
PLCC-28* nozzle
6680332E82
PLCC-44* nozzle
6680332E94
PLCC-52 nozzle
6680332E96
PLCC-84 nozzle
6680334E67
QFP-160 nozzle
6680333E46
SOL-18 nozzle
6680332E84
SOIC-20 nozzle
6680332E87
SOL-20J nozzle
6680333E45
SOL-24 nozzle
6680333E55
TSOP-64 nozzle
Soldering and Un-soldering IC’s
* Included with ChipMaster packages
HKLN4216A
November 24, 2003
1-4
Test Equipment, Service Aids, and Service Tools: Service Aids
Programming/Test Cable
25 POSITION
MALE CONNECTOR
25 POSITION
FEMALE CONNECTOR
P2
P3
36.0”
CABLE
36.0”
CABLE
P1
Figure 1-1. Programming/Test Cable
P2
25 pin Male D Connector
Components molded inside
P1
2.5mm stereo and
3.5mm
3.5mm Tip
(Speaker +)
1
3.5mm
Sleeve
2
2.5mm Tip
(Microphone)
5
2.5mm
3
1
5
Orange
Blue
47
ohm
24
7
33K
20
8
15
16
9
White
2.5mm
Center
4
To Test Box
+
1UF,16V 5%
Spiral
Yellow
P3
25 pin Female
D Connector
1
15
1
2
To Test Box
4
11
3.5mm mono
2.5mm stereo
5
4
3
Figure 1-2. Wiring of the Connectors
November 24, 2003
HKLN4216A
Chapter 2 DC Power Distribution
2.1
DC Regulation and Distribution
A block diagram of the DC power distribution throughout the radio is shown in Figure 2-1.
Accessories
20 pin Connector
Audio
Power
Amplifier
Keypad/Option Board
UNSWB+
7.5V
Battery
SWB+
Fuse
MECH.
SWB+
3.3V
Reg.
LI Ion
Vdda
Regulator
Vdda
Vddd
Regulator
Vddd
Tx
Led
Control
MCU, ROM
and EEPROM
LCD
Driver
ASFIC_CMP
FRACTN
VCOBIC
On/Off
Switch
5V
Regulator
Low Battery
Detect
PA, Driver
PCIC(ALC)
5V
Antenna
Switch
RF AMP, IF AMP,
RX/TX Buffers
IFIC
Figure 2-1. DC Power Distribution Block Diagram
Battery voltage enters at connector J301 and is routed through fuse F301 to become USWB+.
VR301 protects against ESD, and D301 provides reverse polarity protection. This voltage is routed
to:
• FET switch Q170 in the TX power control circuit (turned on during transmit)
• TX power amplifier module U110 (via R150)
• input pins of regulators U310, U320 and U330
• FET switch Q493 (turned on whenever the radio is on)
• on-off switch S444 (part of on-off-volume control) to become SWB+
2-2
DC Power Distribution: DC Regulation and Distribution
When the radio is turned on, SWB+ is present and is applied to:
• transistor switch Q494 (pins 1 and 6) which turns on Q493
• RX audio power amplifier U490
• voltage divider R420/R421 and port PE0, a microprocessor A/D input which measures battery
voltage and radio on/off status
The output of FET switch Q493 is applied to the control pins of regulators U310, U320 and U330,
turning them on. The following regulators are used:
Table 2-1. Voltage Regulators
Reference No.
Description
U310
5 V Regulator
U320
Digital 3.3 V Regulator
U330
3 V Regulator
Type
TK71750S
LP2986
TK71730S
The 5 V source is applied to:
• RX back end circuitry
• synthesizer super filter input and charge pump supply
• RED/GRN LEDs
• RX audio buffer U510
• portions of ASFIC U451
The 5 V source is also applied to FET switches Q311 and Q312. Q311 is turned on by Q313 when
RX_ENA (from U401 pin 49) is high, and supplies the “5R” source to the RF front end stages Q21Q22, and the VCO RX injection buffer Q280. Q312 is turned on by Q313 when TX_ENA (from U401
pin 50) is high, and supplies the “5T” source to the first transmitter stage Q100.
The digital 3.3 volt source from U320 (D_3.3 V) is applied to:
• microprocessor U401
• EEPROM U402
• S-RAM U403
• flash ROM U404
The 3 V regulated source from U330 is applied to:
• synthesizer IC U201
• VCO/buffer IC U251
• portions of ASFIC U451
• microphone bias circuitry
While the radio is turned on, port PH3 (U401 pin 44) is held high. When the radio is turned off, SWB+
is removed and port PE0 (U401 pin 67) goes low, initiating a power-down routine. Port PH3 (pin 44)
remains high, keeping the voltage regulators on via Q493 and Q494, until the operating state of the
radio has been stored in EEPROM and other turn-off data functions have been completed. PH3 then
goes low, turning off Q494 and Q493, and all regulated voltages are removed.
November 24, 2003
HKLN4216A
Chapter 3 Controller Theory of Operation
3.1
Controller
The controller provides the following functions:
• interface with controls and indicators
• serial bus control of major radio circuit blocks
• encoding and/or decoding of selective signaling formats such as PL, DPL, MDC-1200 and
QuikCall II
• interface to CPS programming via the microphone connector
• storage of customer-specific information such as channel frequencies, scan lists, and signaling
codes
• storage of factory tuning parameters such as transmitter power and deviation, receiver squelch
sensitivity, and audio level adjustments
• power-up, power-down and reset routines
Figure 6-3 (VHF) shows the interconnection between the controller and the various other radio
blocks. Figure 6-9 show the connections between the following circuit areas which comprise the
controller block:
• microprocessor circuitry
• audio circuitry
• DC regulation circuitry (refer to Chapter 2, DC Regulations and Distribution.)
• rotary and pushbutton controls and switches
• option board interface
The majority of the circuitry described below is contained in the (VHF) Microprocessor Circuitry
schematic diagrams (Figure 6-10). Portions are also found in the Audio and DC Regulation
schematics (Figures 6-11 and 6-12).
3.1.1
Microprocessor Circuitry
The microprocessor circuitry includes microprocessor (U401) and associated EEPROM, S-RAM (not
used in EP450 models), and Flash ROM memories. The following memory IC's are used:
Table 3-1. Radio Memory Requirements
Reference No.
Description
Type
U402
Serial EEPROM
AT25128
U403
Static RAM
(not used)
U404
Flash ROM
AT49LV001N_70 V
Size
16K x 8
128K x 8
3-2
Controller Theory of Operation: Controller
3.1.1.1 Memory Usage
Radio operation is controlled by software that is stored in external Flash ROM memory (U404).
Radio parameters and customer specific information is stored in external EEPROM (U402). The
operating status of the radio is maintained in RAM located within the microprocessor. When the radio
is turned off, the operating status of the radio is written to EEPROM before operating voltage is
removed from the microprocessor. See section “3.1.1.7 Microprocessor Power-Up, Power-Down and
Reset Routine” on page 3-3 for a discussion of the power-down routine.
Parallel communication with U403 and U404 is via:
• address lines A(0)-A(16), from U401 port F ADDR0-ADDR13 and port G XA14-XA16
• data lines D(0)-D(7), from U401 port C DATA0-DATA7
• chip-select for U403, from PH6 (U401 pin 41)
• chip-enable for U404, from PH7 (U401 pin 38)
• output enable for U404, from PA7 (U401 pin 86)
• write-enable for both U403 and U404, from PG7_R/W (U401 pin 4)
Serial communication with U402 is via:
• the SPI bus (see section “3.1.1.3 Serial Bus Control of Circuit Blocks” on page 3-2)
• chip-select for U402, from PD6 (U401 pin 3)
3.1.1.2 Control and Indicator Interface
Ports PI3 and PI4 are outputs which control the top-mounted LED indicator. When PI3 is high, the
indicator is red. When PI4 is high, the indicator is green. When both are high, the indicator is amber.
When both are low, the indicator is off.
Pressing the side-mounted PTT button (S441) provides a low to port PJ0 (U401 pin 71), which
indicates PTT is asserted. Side-mounted option buttons 1 and 2 (S442 and S443) are connected to
Ports PJ6 (pin 77) and PJ7 (pin 78), respectively.
3.1.1.3 Serial Bus Control of Circuit Blocks
The microprocessor communicates with other circuit blocks via a SPI (serial peripheral interface) bus
using ports PD2 (data into uP), PD3 (data out of uP) and PD4 (clock). The signal names and
microprocessor ports are defined in Table 3-2.
Table 3-2. SPI Bus Signal Definitions
Signal Name
Microprocessor Port
Microprocessor Pin
SPI-DATA_IN
PD2-MISO
U401 Pin 99
SPI_DATA_OUT
PD3-MOSI
U401 pin 100
SPI_CLK
PD4-SCK
U401 pin 1
These signals are routed to:
• the audio filter IC (U451) to control internal functions such as gain change between 25 kHz and
12.5 kHz channels, transmit or receive mode, volume adjustment, etc.
• the synthesizer IC U201 to load receive and transmit channel frequencies
• option board connector J460-1 for internal option configuration and control
• serial EEPROM U402 (both SPI_DATA_IN and SPI_DATA_OUT are used).
November 24, 2003
HKLN4216A
Controller Theory of Operation: Controller
3-3
In order for each circuit block to respond only to the data intended for it, each peripheral has its own
chip select (or chip enable) line. The device will only respond to data when its enable line is pulled
low by one of the microprocessor ports, as follows:
• port PD5 (U401 pin 2) for the audio filter IC
• port PH0 (U401 pin 47) for the synthesizer IC
• port PH4 (U401 pin 43) for the option board/display enable
• port PD6 (U401 pin 3) for the serial EEPROM.
3.1.1.4 Interface to RSS Programming
The radio can be programmed, or the programmed information can be read, using a computer with
CPS (Customer Programming Software) connected to the radio via a RIB (radio interface box) or
with the RIB-less cable. Connection to the radio is made via the microphone connector (part of
accessory connector J471). The SCI line connects the programming contact (J471 pin 6) to ports
PD0_RXD (data into uP, pin 97) and PD1_TXD (data out of uP, pin 98). Transistor Q410 isolates the
input and output functions by allowing PD1 to pull the line low, but does not affect incoming data from
being read by port PD0. This isolation allows high-speed 2-wire programming via TP401 and TP402
for factory programming and tuning.
3.1.1.5 Storage of Customer-Specific Information
Information that has been programmed using CPS, such as channel frequencies or selective
signaling codes, are stored in the external EEPROM, where it is retained permanently (unless
reprogrammed) without needing DC power applied to the microprocessor.
3.1.1.6 Sensing of Externally-Connected Accessories
Port PJ1 is used to detect the presence of externally connected accessories. Port PJ1 (U401 pin 72)
is normally low, unless accessories (lapel speaker microphone, lightweight headset, etc.) are used
with the radio. This port is used to detect an accessory PTT or auto sensing of a VOX accessory.
If VOX is programmed into the radio channel codeplug information, and PJ1 is high during power-up,
the radio will activate VOX operation. If a low is present at port PJ1 during power-up, the radio will
use this port as an external PTT indicator.
3.1.1.7 Microprocessor Power-Up, Power-Down and Reset Routine
On power-up, the microprocessor is held in reset until the digital 3.3 V regulator (U320 pin 5)
provides a stable supply voltage. Once the digital supply reaches steady state and releases the reset
line (U320 pin 7), the microprocessor begins to start up. The ASFIC_CMP (U451) has already
started running and is providing the startup clock to the microprocessor. After reset release by all
circuits, the software within the microprocessor begins executing port assignments, RAM checking,
and initialization. A fixed delay of 100 ms is added to allow the audio circuitry to settle. Next, an alert
beep is generated and the steady state software begins to execute (buttons are read, radio circuits
are controlled).
When the radio is turned off, SWB+ is removed and port PE0 (U401 pin 67) goes low, initiating a
power-down routine. Port PH3 (pin 44) remains high, keeping the voltage regulators on via Q493
and Q494, until the operating state of the radio has been stored in EEPROM. PH3 then goes low,
and all regulated voltages are removed.
HKLN4216A
November 24, 2003
3-4
Controller Theory of Operation: Controller
The microprocessor reset line (pin 94) can be controlled directly by the digital 3.3 V regulator (U320
pin 7), the microphone jack (part of accessory connector J471) via Q472 and Q471, and the
microprocessor itself. U320 pulls the reset line low if the digital 3.3 V source loses regulation. This
prevents possible MOS latch-up or overwriting of registers in the microprocessor because the reset
line is higher in voltage than the microprocessor VDD ports (U401 pins 12, 39, 59, 88). The
microprocessor can drive the reset line low if it detects a fault condition such as an expired watchdog
timer, software attempting to execute an infinite loop, unplanned hardware inputs, static discharge,
etc. Finally, the Q471 can pull the reset line low during use of the programming cable and CPS by
the application of a sufficiently negative voltage to the microphone connector tip contact (J471 pin 4),
however this reset method is not utilized.
3.1.1.8 Boot Mode Control
When power-up reset occurs, the microprocessor will boot into either normal or flash mode
depending on the logic level of ports MODA (U401 pin 58) and MODB (pin 57). The Flash Adapter is
a programming accessory which provides negative 9 volts dc via a 1K resistor to microphone
connector J471 pin 4. This turns on Q471 and Q472 via D471 and VR472, pulling MODA and MODB
low and allowing booting in the flash mode by cycling power to reset the radio. Software upgrades
can then performed by loading the new software code into Flash ROM U404.
3.1.1.9 Microprocessor 7.3975 MHz Clock
The 7.3975 MHz clock signal (uP_CLK) is provided from the ASFIC_CMP (U451 pin 28). Upon
startup the 16.8MHz crystal provides the signal to the ASFIC_CMP, which sends out the uP_CLK at
3.8MHz until a steady-state condition is reached and the clock is increased to 7.3975MHz for the
microprocessor.
3.1.1.10 Battery Gauge
Various battery types are available having different capacities. The different battery types contain
internal resistors connected from the BATT_CHARGE contact to ground (which is routed to the
microprocessor as BATT_DETECT). A voltage divider is formed with R255 producing a different DC
voltage for each battery type, which is read by microprocessor port PE2 (pin 65). This allows the
software to recognize the battery chemistry being used and adjust the battery gauge for best
accuracy.
3.1.2
Audio Circuitry
3.1.2.1 Transmit and Receive Low-Level Audio Circuitry
The majority of RX and TX audio processing is performed by U451, the Audio Filter IC
(ASFIC_CMP), which provides the following functions:
• Tone PL/Digital PL encode and decode filtering
• Tone PL/Digital PL rejection filter in RX audio path
• TX pre-emphasis amplifier
• TX audio modulation limiter
• Post-limiter (splatter) filter
• TX deviation adjust (digitally-controlled attenuators)
• Programmable microphone gain attenuator
• RX audio volume control (digitally controlled attenuator)
• Carrier squelch adjustment (digitally controlled attenuator)
• Microprocessor output port expansion
November 24, 2003
HKLN4216A
Controller Theory of Operation: Controller
3-5
• 2.5 volt dc reference source
• Microprocessor clock generation (from the 16.8 MHz reference oscillator input)
The parameters of U451 that are programmable are selected by the microprocessor via the CLOCK
(U451 pin 21), DATA (U451 pin 22) and chip enable (U451 pin 20) lines.
RX audio buffer U510 amplifies the audio level from the DEMOD output of the IFIC before being
applied to the audio filter IC input (DISC, U451 pin 2). The buffer is DC coupled to avoid corruption of
low-frequency data waveforms such as DPL. Because such waveforms are polarity sensitive, this
buffer is configured as a single-stage inverting amplifier (U510-1 only) for VHF models where highside first injection is used, or is configured as a two-stage non-inverting amplifier (U510-1 and -2) for
UHF models using low-side first injection. The gain of the buffer is 1.5 times or 3.5 dB.
Volume adjustment is performed by a digital attenuator within U451. The volume control (10KO, part
of S444) is connected to D_3.3 V and ground via R506 and R507. When the volume control is
rotated, it varies the dc voltage applied to microprocessor A/D input port PE1 (U401 pin 66) between
approximately 0 volts dc at minimum volume to 3.3 volts dc at maximum volume. Depending on this
voltage, the appropriate setting of the digital volume attenuator is selected. This technique is less
susceptible to noise than a conventional analog volume control.
3.1.2.2 Audio Power Amplifier
The audio power amplifier IC U490 amplifies receiver audio from U451 pin 41 to a level sufficient to
drive a loudspeaker. U490 is a bridge amplifier delivering 3.46 volts rms between pins 5 and 8
without distortion, which is sufficient to develop 500 milliwatts of audio power into the internal 24 ohm
speaker or an external 24 ohm load. The audio power amplifier is muted whenever speaker audio is
not required to reduce current drain. The audio amp is muted when U451 pin 14 is low. When U451
pin 14 is high, U490 pin 1 is pulled low by Q490, enabling the audio amplifier.
Because the power amplifier is a bridge-type, neither speaker terminal is grounded. Care should be
taken that any test equipment used to measure the speaker audio voltage does not ground either
speaker output terminal, otherwise damage to the audio power amplifier IC may result. When a 24ohm load resistor is used it should be connected between the tip and the sleeve of accessory jack
J471 (3.5mm port), never to ground. External SPKR plug insertion mechanically disconnects the
internal speaker. Voltage measurements using test equipment that is not isolated from ground may
be made from one side of the speaker or load resistor (either the tip or the sleeve of J471) to chassis
ground, in which case the voltage indicated will be one half of the voltage applied to the speaker or
load resistor. The Motorola RLN4460 Portable Test Set and AAPMKN4004 Programming Test Cable
provide the proper interface between the radio's ungrounded audio output and ground-referenced
test equipment.
3.1.2.3 Internal Microphone Audio Voice Path
Microphone audio from internal microphone is routed from J470-1 via C475, L471, and C470 to the
ASFIC_CMP mic audio input (MICINT, U451 pin 46). During transmit, Q470 is turned on by a low at
U451 pin 35, providing dc bias for the internal MIC via R478. External MIC plug insertion
mechanically disconnects the internal microphone. External MIC audio is coupled through L471 and
C470 to the mic audio input. An input level of 10 mV at J471 pin 4 produces 200 mV at the output of
U451 pin 40, which corresponds to 60% deviation.
3.1.2.4 PTT Circuits
The internal side-mounted PTT switch (S441) is sensed directly by microprocessor port PJ0 (U401
pin 71). External mic PTT is sensed by measuring the current drawn through the accessory
connector (J471-4) by the mic cartridge (which is in series with the accessory PTT switch). This
current is drawn through the base (pin 5) and emitter (pin 4) of a transistor in Q470, causing its
collector (pin 3) to supply a logic-high to microprocessor port PJ1 (pin 72).
HKLN4216A
November 24, 2003
3-6
Controller Theory of Operation: Controller
3.1.2.5 VOX Operation
VOX audio accessories do not have a PTT switch. Instead, the mic cartridge is wired directly from
J471-4 to ground. If the radio has been programmed for VOX operation and the VOX accessory is
plugged in prior to turning the radio on, the current drawn by the cartridge will turn on Q470 (pins 34-5) and a logic high will be seen at port PJ1 at turn-on. The microprocessor then assumes VOX
operation, with PTT controlled by the presence of audio at the mic cartridge. A dc voltage
proportional to the audio level at the input of the ASFIC_CMP (U451 pin 46) is fed to an A/D input of
microprocessor U401 (pin 62). During VOX operation, PTT is activated when the dc level exceeds a
preset threshold.
3.1.2.6 Programming and Flashing Through Microphone Jack
The ring contact on the 2.5 mm microphone jack is used for reading, programming or re-flashing the
radio using CPS. This contact (J471 pin 6) is routed to ports PD0_RXD (data into uP, pin 97) and
PD1_TXD (data out of uP, pin 98). Transistor Q410 isolates the input and output functions by
allowing PD1 to pull the line low, but does not affect incoming data from being read by port PD0.
To re-flash the radio (overwrite the software in the Flash ROM with new software), the radio must
power up in the boot mode. This is accomplished by using a flash adapter accessory, which provides
SCI communication with the programming ring contact (J471 pin 6) and also allows a negative
voltage (negative 9 volts dc via a 1K resistor) to be applied to the tip contact (J471 pin 4). This
voltage is sufficient to turn on the base-emitter junction (pins 1 and 2) of Q472 via L471, D471,
VR472 and R471. Pin 6 of Q472 goes high, turning on Q471 (pins 3 and 4) and pulling the
BOOT_ENA line (ports MODA and MODB of the microprocessor) low. Cycling power generates a
reset which causes the radio to boot in the flash mode.
November 24, 2003
HKLN4216A
Chapter 4 VHF Theory Of Operation
4.1
Introduction
This chapter provides a detailed theory of operation for the radio components. Schematic diagrams
for the circuits described in the following paragraphs are located in Chapter 6 of this manual.
4.2
VHF Receiver
The VHF receiver covers the range of 146-174 MHz and provides switchable IF bandwidth for use
with 12.5 kHz or 20/25 kHz channel spacing systems. The receiver is divided into two major blocks as
shown in Figure 4-1.
• Front End
• Back End
Preselector
Filter
RF
Amp
Interstage
1st Mixer
Filter
Crystal
Filter
IF
Amp
RX from
Antenna Switch
Inj Filter
First LO
from Synthesizer
BW_SEL
6G
Ceramic
Resonator
Recovered Audio
6E
Switching
Cer Fltr
4E
Demodulator
RSSI
Figure 4-1. VHF Receiver Block Diagram
4.2.1
Receiver Front-End
Incoming RF signals from the antenna are first routed through the harmonic filter and antenna switch,
part of the transmitter circuitry, before being applied to the receiver front end. The receiver front end
consists of a preselector filter, RF amplifier, an interstage filter, and a double-balanced first mixer.
The preselector filter is a fixed-tuned 4-pole design using discrete elements (L1-L4 and C1-C9) in a
series/shunt resonator configuration. It has a 3 dB bandwidth of 44 MHz, an insertion loss of 2 dB and
image attenuation of 40 dB at 235 MHz, with increasing attenuation at higher frequencies. Diode CR1
protects the RF amplifier by limiting excessive RF levels.
The output of the filter is matched to the base of RF amplifier Q21, which provides 18 dB of gain and
a noise figure of 2 dB. Operating voltage is obtained from the 5R source, which is turned off during
transmit to reduce dissipation in Q21. Current mirror Q22 maintains the operating current of Q21
4-2
VHF Theory Of Operation: VHF Receiver
constant at 6.2 mA regardless of device and temperature variations, for optimum dynamic range and
noise figure.
The output of the RF amplifier is applied to the interstage filter, a fixed-tuned 3-pole series-coupled
resonator design having a 3 dB bandwidth of 58 MHz and insertion loss of 1.8 dB. This filter has an
image rejection of 42 dB at 235 MHz, with increasing attenuation at higher frequencies.
The output of the interstage filter is connected to the passive double-balanced mixer consisting of
components T41, T42, and CR41. This mixer has a conversion loss of 7 dB. High-side injection from
the frequency synthesizer is filtered by L40-L41 and C40-C44 to remove second harmonic energy
that may degrade half-IF spurious rejection performance. The injection filter has a 3 dB bandwidth of
52 MHz and an insertion loss of 1.5 dB. The filtered injection signal is applied to T42 at a level of +6
dBm.
The mixer output is applied to a diplexer network (L51-L52, C51, R51) which matches the 44.85 MHz
IF signal to crystal filter FL51, and terminates the mixer into 50Ω at all other frequencies
4.2.2
Receiver Back-End
The receiver back end is a dual conversion design. High IF selectivity is provided by FL51, a 4-pole
fundamental mode 44.85 MHz crystal filter with a minimum 3 dB bandwidth of + 6.7 kHz, a maximum
20 dB bandwidth of ±12.5 kHz, and a maximum insertion loss of 3.5 dB. The output is matched to IF
amplifier stage Q51 by L53 and C93. Q51 provides 16 dB of gain and a noise figure of 1.8 dB. The dc
operating current is 1 mA. The output of Q51 is applied to the input of the receiver IFIC U51. Diode
CR51 limits the maximum RF level applied to the IFIC.
The IFIC is a low-voltage monolithic FM IF system incorporating a mixer/oscillator, two limiting IF
amplifiers, quadrature detector, logarithmic received signal strength indicator (RSSI), voltage
regulator and audio and RSSI op amps. The second LO frequency, 44.395 MHz, is determined by
Y51. The second mixer converts the 44.85 MHz high IF frequency to 455 kHz.
Additional IF selectivity is provided by two ceramic filters, FL52 (between the second mixer and IF
amp) and FL53 or FL54 (between the IF amp and the limiter input). The wider filter FL53 is used for
20/25 kHz channel spacing, and the narrower filter FL54 is used for 12.5 kHz channels. When the
BW_SEL line is high, the two upper diodes in packages D51 and D52 are forward biased, selecting
FL53 for 20/25 kHz channels. When the BW_SEL line is low, the two lower diodes in packages D51
and D52 are forward biased, selecting FL54 for 12.5 kHz channels.
FL52
November 24, 2003
FL53
FL54
Number of Elements:
4
6
6
Insertion Loss:
4 dB
4 dB
4 dB
6 dB Bandwidth:
15 kHz
15 kHz
9 kHz
50 dB Bandwidth:
30 kHz
30 kHz
22 kHz
Stopband Rejection:
27 dB
47 dB
47 dB
HKLN4216A
VHF Theory Of Operation: VHF Transmitter
4.3
4-3
VHF Transmitter
The VHF transmitter covers the range of 146-174 MHz. Depending on model, the output power of the
transmitter is either switchable on a per-channel basis between high power (5 watts) and low power
(1 watt). The transmitter is divided into four major blocks as shown in Figure 4-2.
•
•
•
•
Power Amplifier
Harmonic Filter
Antenna Matching Network
Power Control
USWB+
TX_ENA
Power Control
PWR_SET
VGG
VDD
5T
TX_INJ
(From VCO)
Q100
Power Amplifier Module U110
RX_IN
(To Receiver)
Harmonic Filter
Antenna
Switch
J140 Antenna
Jack
Antenna
Antenna
Matching
Network
Figure 4-2. VHF Transmitter Block Diagram
4.3.1
Transmit Power Amplifier
The transmitter power amplifier has three stages of amplification. The first stage, Q100, operates in
Class AB from the 5T source. It provides 13 dB of gain and an output of 20 mW. The current drain is
typically 25mA. Components C105-C107 and L103 match the output of Q100 to the 50Ω input of the
module U110.
U110 is a two stage Silicon MOS FET power amplifier module. Drain voltage is obtained from UNSW
B+ after being routed through current-sense resistor R150 in the power control circuit. The output
power of the module is controlled by varying the DC gate bias on U110 pin 2 (VGG).
4.3.2
Antenna Switch
The antenna switch consists of two pin diodes, D120 and D121. In the receive mode, both diodes are
off. Signals applied at the antenna or at jack J140 are routed, via the harmonic filter, through network
C122-C124 and L121, to the receiver input. In the transmit mode, Q170 is on and TXB+ is present,
forward-biasing both diodes into conduction. The diode current is 50 mA, set by R120-R122. The
transmitter RF from U110 is routed through D120, and via the harmonic filter to the antenna jack.
D121 conducts, shunting RF power and preventing it from reaching the receiver. L121 is selected to
appear as a 1/4 wave at VHF, so that the low impedance of D121 appears as a high impedance at the
junction of D120 and the harmonic filter input. This provides a high series impedance and low shunt
impedance divider between the power amplifier output and receiver input.
4.3.3
Harmonic Filter
The harmonic filter consists of components C130-C136 and L130-L132. The harmonic filter is a
seven-pole elliptical low-pass configuration, optimized for low insertion loss, with a 3 dB frequency of
approximately 210 MHz and typically less than 0.8 dB insertion loss in the passband.
HKLN4216A
November 24, 2003
4-4
4.3.4
VHF Theory Of Operation: VHF Frequency Generation Circuitry
Antenna Matching Network
The harmonic filter presents a 50 Ω impedance to antenna jack J140. A matching network, made up
of C140-C141 and L140, is used to match the antenna impedance to the harmonic filter. This
optimizes the performance of the transmitter and receiver into the impedance presented by the
antenna, significantly improving the antenna's efficiency.
4.3.5
Power Control
The power control circuit is a dc-coupled amplifier whose output is the dc gate bias voltage (VGG)
applied to the two stages of the RF power amplifier U110.
The output power of the transmitter is adjusted by varying the setting of the power-set DAC contained
in the ASFICcmp IC (DACG, U451 pin 6). This PWR_SET voltage is applied to U150 pin 3.
Stage U150-2 compares the voltage drop across current sense resistor R150 to the voltage drop
across resistor R151 caused by current flow through Q150, and adjusts its output (pin 7) to maintain
equal voltages at pins 5 and 6. Thus the current flow through Q150, and hence its emitter voltage, is
proportional to the current drawn by stage U110, which is in turn proportional to the transmitter output
power. The emitter voltage of Q150 is applied to U150 pin 2, where it is compared to the power set
voltage PWR_SET at pin 3.
The output of U150 pin 1 is divided by R110 and R111 and applied as a gate voltage to the power
amplifier U110. By varying this gate voltage as needed to keep the voltages at U150 pins 2 and 3
equal, power is maintained at the desired setting. Excessive final current, for example due to antenna
mismatch, causes a lowering of the voltage at U150 pin 6, an increased voltage at pin 2, and a
lowering of the voltage at pin 1 and of the gate voltage VGG. This prevents damage to the final stage
due to excessive current.
4.4
VHF Frequency Generation Circuitry
The frequency generation system, shown in Figure 4-3, is composed of two circuit blocks, the
Fractional-N synthesizer IC U201, the VCO/Buffer IC U251, and associated circuitry. Figure 4-4
shows the peripheral interconnect and support circuitry used in the synthesizer block, and Figure 4-5
details the internal circuitry of the VCOBIC and its interconnections to the surrounding components.
Refer to the schematic to identify reference designators.
The Fractional-N synthesizer is powered by regulated 5 V and 3 V provided by U310 and U330
respectively. 5 V is applied to U201 pins 13 and 30, and 3 V is applied to pins 5, 20, 34 and 36. The
synthesizer in turn generates a super-filtered 4.5 V supply (VSF, from pin 28) to power U251. In
addition to the VCO, the synthesizer also interfaces with the logic and ASFICcmp circuits.
Programming for the synthesizer is accomplished through the microprocessor SPI_DATA_OUT,
SPI_CLK, and SYNTH_CS (chip select) lines (U409 pins 100, 1 and 47 respectively). A logic high
(3 V) from U201 pin 4 indicates to the microprocessor that the synthesizer is locked.
November 24, 2003
HKLN4216A
VHF Theory Of Operation: VHF Frequency Generation Circuitry
4-5
Transmit modulation from the ASFICcmp (U451 pin 40) is applied to U201 pin 10 (MOD_IN). An
electronic attenuator in the ASFICcmp adjusts overall transmitter deviation by varying the audio level
applied to the synthesizer IC. Internally the audio is digitized by the Fractional-N synthesizer and
applied to the loop divider to provide the low-port modulation. The audio is also routed through an
internal attenuator for the purpose of balancing the low port and high port modulation and reducing
the deviation by 6 dB for 12.5 kHz channels, and is available at U201 pin 41 (VCO_MOD). This audio
signal is routed to the VCO's modulator.
Voltage
Multiplier
TRB
VCP
Vmult1
Rx VCO
Circuit
Aux3
Synthesizer
U201
Vmult2
16.8 MHz
Ref. Osc.
Buffer
Q280
Rx Out
VCOBIC
U251
Loop
Filter
MOD Out
Modulating
Signal
To Mixer
Tx Out
To PA Driver
Tx VCO
Circuit
Figure 4-3. VHF Frequency Generation Unit Block Diagram
4.4.1
Fractional-N Synthesizer
The Fractional-N synthesizer, shown in Figure 4-4, uses a 16.8 MHz crystal (Y201) to provide the
reference frequency for the system. External components C201-C203, R202 and D201 are also part
of the temperature-compensated oscillator circuit. The dc voltage applied to varactor D201 from U201
pin 25 is determined by a temperature-compensation algorithm within U201, and is specific to each
crystal Y201, based on a unique code assigned to the crystal that identifies its temperature
characteristics. Stability is better than 2.5 ppm over temperatures of -30 to 60 °C. Softwareprogrammable electronic frequency adjustment is achieved by an internal DAC which provides a
frequency adjustment voltage from U201 pin 25 to varactor D201.
The synthesizer IC U201 further divides the 16.8 MHz signal to 2.1 MHz, 2.225 MHz, or 2.4 MHz for
use as reference frequencies. It also provides a buffered 16.8 MHz signal at U201 pin 19 for use by
the ASFICcmp.
To achieve fast locking of the synthesizer, an internal adapt charge pump provides higher current at
U201 pin 45 to quickly force the synthesizer within lock range. The required frequency is then locked
by the normal mode charge pump at pin 43. A loop filter (C243-C245 and R243-R245) removes noise
and spurs from the steering voltage applied to the VCO varactors, with additional filtering located in
the VCO circuit.
Both the normal and adapt charge pumps get their supply from the capacitive voltage multiplier made
up of C221-C224 and D220-D221. Two 3 V square waves from U201 pins 14-15 provide the drive
signals for the voltage multiplier, which generates 12.1 V at U201 pin 47. This voltage is filtered by
C225-C228.
HKLN4216A
November 24, 2003
4-6
VHF Theory Of Operation: VHF Frequency Generation Circuitry
One of the auxiliary outputs of the synthesizer IC (AUX3, U201 pin 2) provides the TRB signal which
determines the operating mode of the VCO, either receive or transmit.
DATA (U401 Pin 100)
CLOCK (U401 Pin 1)
SYNTH_CS (U401 Pin 47)
MOD IN (U451 Pin 40)
+5V (U310 Pin 5)
+3V (U330 Pin 5)
7
8
9
10
LOCK
DATA
FREFOUT
CLK
CEX
GND
MODIN
IOUT
VCC , 5V
IADAPT
13,30
5,20,34,36
23
Reference
Oscillator
U201
Low Voltage MODOUT
Fractional-N
Synthesizer
VDD , 3V
XTAL1
AUX3
25
32
47
WARP
SFOUT
PREIN
BIAS1
VCP
VMULT2 VMULT1
BIAS2
14
4
LOCK (U401 Pin 56)
19
FREF (U451 Pin 34)
6,22,23,24
43
45
2-Pole
Loop Filter
Steering
Line
LO RF
Injection
41
VCO
Mod
2
TRB
28
Filtered 5V
Voltage
Controlled
Oscillator
40
39
15
TX RF
Injection
(First Stage of PA)
Voltage
Multiplier
Prescaler In
Figure 4-4. VHF Synthesizer Block Diagram
4.4.2
Voltage Controlled Oscillator (VCO)
The VCOBIC (U251), shown in Figure 4-5, in conjunction with the Fractional-N synthesizer (U201)
generates RF in both the receive and the transmit modes of operation. The TRB line (U251 pin 19)
determines which oscillator and buffer are enabled. A sample of the RF signal from the enabled
oscillator is routed from U251 pin 12 through a low pass filter, to the prescaler input of the synthesizer
IC (U201 pin 32). After frequency comparison in the synthesizer, a resultant DC control voltage is
used to steer the VCO frequency. When the PLL is locked on frequency, this voltage can vary
between 3 V and 9 V. L251 and C251 further attenuate noise and spurs on the steering line voltage.
In the receive mode, the TRB line (U251 pin 19) is low. This activates the receive VCO and the
receive buffer of U251, which operate within the range of 190.85 to 218.85 MHz. The VCO frequency
is determined by tank inductor L254, C253-C257, and varactor D251. The buffered RF signal at U251
pin 8 is further amplified by Q280 and applied as RX_INJ to the low-pass injection filter in the receiver
front end circuit.
In the transmit mode, U251-19 is driven high by U201 pin 2, enabling the transmit VCO and buffer.
The 146-174 MHz RF signal from U251 pin 10 is applied as TX_INJ to the input of the transmitter
circuit via matching network C290-C291 and L291. TX VCO frequency is determined by L264, C263-
November 24, 2003
HKLN4216A
VHF Theory Of Operation: Keypad
4-7
C267, and varactor D262. High-port audio modulation from the synthesizer IC is applied as
VCO_MOD to varactor D261 which modulates the transmit VCO.
AUX3 (U201 Pin 2)
TRB_IN
Pin 20
Pin 19
Pin 7
NC
TX/RX/BS
Switching Network
Pin 13
NC
V_SF (U201 Pin 28)
Pin 3
Steer Line
Voltage
(V_STEER)
Vcc-Superfilter
Presc
Pin 12
U251
VCOBIC
Pin 8
RX
RX
RX
Tank
RX VCO
Circuit
TX
Tank
TX VCO
Circuit
Rx Active
Bias
RX INJ
Pin 14
Pin 6
VCC Buffers
Pin 16
TX
Tx Active
Bias
TX
Matching
Network
Vsens
Circuit
Vcc-Logic
3V (U330 Pin 5)
Pin 10
Pin 15
Pin 18
U201 Pin 32
Buffer
Q280
Pin 4 Collector/RF in
Pin 5
Prescaler Out
Pin 2
Rx-I adjust
TX INJ
Pin 1 Pins 9,11,17
Tx-I adjust
V_SF
(U201 Pin 28)
3V
(U330 Pin 5)
Figure 4-5. VHF VCO Block Diagram
4.5
Keypad
Keypad
Button
Keypad Column
Keypad Row
Keypad Column
28 Pin Connector
(Main Board)
Keypad Row
28 Pin Connector
(keypad Board)
The keypad block diagram is shown in Figure 4-6. Pressing a key creates two distinct voltages
KEYPAD_ROW and KEYPAD_COL. These voltages are sent directly to the radio’s microprocessor
on the main board. The microprocessor then interprets the voltage for KEYPAD_ROW and
KEYPAD_COL for each key press.
Keypad Row
Keypad Column
MCP
Figure 4-6. Keypad Block Diagram
HKLN4216A
November 24, 2003
4-8
VHF Theory Of Operation: Keypad
Notes:
November 24, 2003
HKLN4216A
Chapter 5 VHF Troubleshooting Tables
5.1
Troubleshooting Table for Receiver
Table 5-1. Troubleshooting Table for Receiver
Symptom
Radio Dead (no
turn-on beep, no
LED indication)
Possible Causes
Procedure
Corrective Action
1. Battery dead or defective.
Substitute known good battery or
battery eliminator.
Charge or replace battery.
2. Defective battery contacts.
Inspect battery contacts for corrosion
or bent terminals.
Clean/repair/replace J301.
3. Blown fuse
Check voltage on each side of fuse.
If blown, 0 VDC after fuse.
Check for short on output,
check D301, VR301, troubleshoot/repair as needed, replace
fuse.
4. DC switching fault
Verify battery voltage present at
S444 pin 5 when radio is on.
Check/replace on-off-volume
control S444.
Verify Q494-1 is at least 1 V dc,
Q494-6 is ~0.1 V dc, Q493-3 is at
Vbatt.
Troubleshoot/replace Q493/4.
Verify clock input to U401-90
(EXTAL) is 7.3975 MHz using high
impedance probe. If clock is 3.8
MHz, check for shorts on U401 pins.
Connect RIB to verify communication via CPS.
Verify 16.8 MHz signal at U45134. If OK, troubleshoot/replace
U451. If not present, troubleshoot U201 Synthesizer. Reprogram/reflash as needed.
Verify U401-94 (RESET) is high.
If RESET is Low, troubleshoot
regulator U320. Check for
shorts at U401 pins. Replace
U401. Reprogram as needed.
Verify U310-5 is 5 V dc, U320-5 is
3.3 V dc, U330-5 is 3 V dc.
Check for shorts on outputs,
troubleshoot/repair as needed,
replace faulty regulator.
5. Microprocessor not
starting up.
6. Regulator fault
5-2
VHF Troubleshooting Tables: Troubleshooting Table for Receiver
Table 5-1. Troubleshooting Table for Receiver (Continued)
Symptom
No Audio
No Receive
(squelch noise
present)
Possible Causes
Corrective Action
1. Synthesizer out of lock Verify U201-4 is at 3 V dc.
Troubleshoot synthesizer/VCO
circuits.
2. Defective IFIC
Verify audio is present at U51-8.
Check Q70, Y70, U51.
3. RX audio buffer fault
Verify audio is present at U451-2.
Check U510 and associated
parts.
4. ASFIC fault
Verify audio is present at U451-41.
Verify U451-14 is high.
Check squelch setting, PL/DPL
programming. Troubleshoot/
replace U451.
5. Audio PA fault
Verify U490-1 is <0.2 V dc.
Check Q490.
Verify audio is present at U490-5
and 8.
Check/replace U490.
6. Defective speaker
Verify audio is present at speaker
terminals.
If not, check continuity of J471-2
and 3. Check J491. If yes,
replace speaker.
1. No first injection
Check that RF level at T42-6 is
approx +6 dBm.
Check injection filter C40-44,
L40-41.
Check that RF level at U251-8 is at
least -8 dBm.
If yes, check Q280 and associated parts. If no, check U251
and components on pins 5 and
6.
Verify U401-49 is high in RX.
Check/replace U401
Verify Q311 gate is 0 V dc in RX
Check/replace Q313.
Verify Q311 drain is 5 V dc in RX.
Check for shorts, check/replace
Q311.
3. Harmonic filter or
antenna switch fault
Apply on-channel 100 mV RF signal
at antenna port. Verify RF level at jct.
C1/C2 per schematic.
Check TX harmonic filter, D120121. Should be 0 V dc on D120121.
4. Back end fault
Apply on-channel 100 mV RF signal
at antenna port. Measure RF levels
from FL51 through U51.
Check components prior to lossof-signal point.
5. No second injection
Measure RF level at U51-3, verify
approx. 280 mV rms.
If dc voltages at U51-3 and 4
are OK, check Y51 and associated parts. If not replace U51.
2. No 5R source.
November 24, 2003
Procedure
HKLN4216A
VHF Troubleshooting Tables: Troubleshooting Table for Synthesizer
5.2
5-3
Troubleshooting Table for Synthesizer
Table 5-2. Troubleshooting Table for Synthesizer
Symptom
Synthesizer Out of
Lock (RX mode
only)
Synthesizer Out of
Lock (TX mode
only)
Synthesizer Out of
Lock (RX and TX
modes)
Possible Causes
1. VCO fault
Corrective Action
Verify oscillator is working, check RF
level at U251-10 per schematic.
Check VCO tank components
connected to U251-5 and 6.
Check dc voltages at U251 pin 2
through 6 and 10 per Table 5-4.
Check for shorts/opens, replace
U251.
Verify steering line voltage is
between ~3 V and 10 V.
Check D251 and associated
components.
2. Synthesizer fault
Verify TRB line (from U201-2 to
U251-19) is low in RX mode
Check for shorts, check U201
voltages per Table 5-4, replace
U201 if incorrect.
3. Programming fault
Verify RX channel programming is
correct.
Re-program if necessary.
1. VCO fault
Verify oscillator is working, check RF
level at U251-10 per schematic.
Check VCO tank components
connected to U251-15 and 16.
Check dc voltages at U251 pins
1,3,4,10,15,16 per Table 5-4.
Check for shorts/opens, replace
U251.
Verify steering line voltage is
between ~3 V and 10 V.
Check D261 and associated
components.
2. Synthesizer fault
Verify TRB line (U201-2 to U251-19)
is high (3 V) in TX mode
Check for shorts, check U201
voltages per Table 5-4, replace
U201 if incorrect.
3. Programming fault
Verify TX channel programming is
correct.
Re-program if necessary.
1. VCO fault
Check that RF level at U251-12 is at
least 150 mV (VHF) or -12 to -20
dBm (UHF)
If low/missing, check L276,
C276-7, R276.
2. Synthesizer fault
Check that RF level at U201-32 is at
least 150 mV (VHF) or -12 to -20
dBm (UHF).
If correct, check/replace U201.
If incorrect, check R248 and
C241.
Verify steering line voltage is
between ~3 V and 10 V.
Check loop filter components
R243-5 and C243-5.
Verify 4.5 V dc at U201-28.
Check C231-233, etc., for
shorts. If OK check/replace
U201.
Verify 12.1 V dc at U201-47
Check for 3 V 1.05 MHz sq
waves at U201-14 and 15.
Check C218-228, D220-221.
Verify channel programming is correct.
Re-program if necessary.
3. DC voltage fault
4. Programming fault
HKLN4216A
Procedure
November 24, 2003
5-4
VHF Troubleshooting Tables: Troubleshooting Table for Transmitter
5.3
Troubleshooting Table for Transmitter
Table 5-3. Troubleshooting Table for Transmitter
Symptom
No Transmit (no TX
LED indication)
No Transmit (TX
LED indication OK)
November 24, 2003
Possible Causes
Procedure
Corrective Action
1. PTT switch defective.
Verify U401-71 goes low when PTT
is pressed.
Replace PTT switch S441.
2. EXT MIC PTT fault
Verify U401-72 goes low when J471- Check/replace Q470, L471 etc.
4 is grounded.
1. Synthesizer out of lock Refer to Table 5-2.
Refer to Table 5-2.
2. No TX_ENABLE
Verify U401-50 is high when pin 71
or 72 is low.
Check/replace U401.
3. TX DC switch fault
Verify Q171-C is 0 V in TX.
Replace Q171.
Verify Q170-C is at Vbatt in TX.
Check for shorts, replace Q170.
4. Power control fault
Check Q150 and U150 dc voltages
per schematic and Table 5-4.
Repair/replace defective components
5. No TX injection
Check that RF level at jct. R100/
R101 per schematic.
Check U251, L291-292, C290291.
6. No 5T source
Verify Q312 gate is 0 V dc in TX
Check/replace Q313.
Verify Q312 drain is 5 V dc in TX.
Check for shorts, check/replace
Q312.
7. TX gain stage failure
Check RF levels at Q100 and U110
per schematic.
Troubleshoot Q100/U110 and
associated circuitry.
8. Antenna switch failure
Verify dc voltage at jct. R122/L120 is
approx 1.5 V.
Check/replace D120-121, L120121, R120-122, etc.
HKLN4216A
VHF Troubleshooting Tables: Troubleshooting Table for Transmitter
5-5
Table 5-3. Troubleshooting Table for Transmitter (Continued)
Symptom
Low Power
Possible Causes
Procedure
1. Low TX injection
Check that RF level at jct. R100/
R101 per schematic.
Check U251, L291-292, C290291.
2. Low gain in TX stage
Verify dc voltage at Q100-E is ~1.3 V
(VHF) or ~0.5 V (UHF).
Verify 5T voltage is correct.
Troubleshoot Q100 circuitry.
Verify that RF level at U110-1 is
approx. 1 V (VHF) or 1.6 V (UHF).
Troubleshoot Q100 circuitry.
Check/replace Q100.
Verify that the dc voltage at
PWR_SET (R162) is approx 1.8 V
dc (at 1 watt) to 2.6 V dc (at 4-5
watts).
Check programming. Troubleshoot controller circuitry. Check/
replace U451.
3. Incorrect control voltage
Verify that the dc voltage at U110-2
is approx 2-3 V dc (at 1 watt) to 3-4
V dc (at 4-5 watts). (See schematic.)
Poor TX range,
conducted power
OK
No internal mic
audio (EXT MIC
audio OK)
HKLN4216A
Corrective Action
Troubleshoot U150, Q150 and
associated circuitry.
4. Antenna switch defect
Verify dc voltage at jct. R122/L120
(VHF) or R121/L120 (UHF) is approx
1.7 V. Note: Do not attempt to measure RF or DC voltages at the
diodes. Damage to test equipment
may occur.
Check/replace D120-121, L120121, R120-122, etc.
5. Harmonic filter defect
Visually inspect components C130137, L130-132. Check dc continuity
of L130-132 in RX mode only.
Repair/replace if necessary.
1. RF test jack defective
Verify continuity of J140 pins 3 and 4
in RX mode only.
Replace J140.
2. Antenna matching net- Visually inspect components C140work fault
141, L140 or L141. Check dc continuity of L140 or L141in RX mode
only.
Repair/replace if necessary.
3. Defective or wrong
antenna
Verify correct antenna is installed.
Try another antenna.
Replace antenna.
1. Mic bias fault
Verify U451-35 is low when side PTT
is pressed.
Check/replace U451.
Verify Q470-6 is high when side PTT
button is pressed.
Check/replace R474, R476, and
Q470.
2. Defective mic
Verify approx 1.8 V dc across cartridge when side PTT button is
pressed. Verify audio present (~10
mV rms) when speaking into mic.
Check mic connector and R478.
Replace mic cartridge.
3. Defective mic jack
Verify continuity between J471 pins
4 and 5.
Replace J471.
November 24, 2003
5-6
VHF Troubleshooting Tables: Troubleshooting Table for Transmitter
Table 5-3. Troubleshooting Table for Transmitter (Continued)
Symptom
No EXT MIC audio
Possible Causes
Procedure
1. Mic bias fault
Verify approx 1.8 V dc across EXT
MIC cartridge in TX mode. Verify
audio present (~10 mV rms) when
speaking into mic.
Check Q470. R475, R477,
L471. Check VR473, VR475,
D470 for shorts.
2. Audio path fault
Verify mic audio present (~10 mV
rms) at U451-46.
Check L471, C470.
Verify amplified mic audio present
(~200 mV rms) at U451-40.
Check/replace U451.
3. Defective audio acces- Try another accessory.
sory
November 24, 2003
Corrective Action
Replace defective accessory.
HKLN4216A
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
5.4
5-7
Troubleshooting Table for Board and IC Signals
Table 5-4. Troubleshooting Table for Board and IC Signals
IC Designator
Pin
U51
IFIC
1
RF input 44.85 MHz
1.20
2
RF input decoupling
1.20
3
2nd LO osc output
4.02
4
2nd LO osc input
4.60
5
RSSI output
0.74
6
Vcc
4.70
7
Audio feedback
0.89
8
Audio output
1.44
DEMOD to stage U510
9
RSSI feedback
0.74
(no received signal)
10
Quad detector input
2.22
11
Limiter output
1.25
12
Limiter decoupling 2
1.30
13
Limiter decoupling 1
1.30
14
Limiter input
1.28
15
Ground
GND
16
IF amp output
1.22
17
IF amp decoupling 2
1.26
18
IF amp input
1.26
19
IF amp decoupling 1
1.26
20
2nd mixer output
3.09
1
Inverter 1 input
0
(25 kHz mode)
2
Inverter 2 output
0
(25 kHz mode)
3
Inverter 3 input (NU)
GND
4
Ground
GND
5
Inverter 3 output (NU)
4.96
6
Inverter 2 input
3.00
(25 kHz mode)
7
Inverter 1 output
4.95
(25 kHz mode)
8
Vcc
4.96
U52
BW Select Switch
HKLN4216A
Pin Function
DC Voltage
Comments (Condition)
(no received signal)
November 24, 2003
5-8
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
Table 5-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U110
RF Power Amp
1
RF input
2
Vgg (gate bias)
3
Vdd
4
RF output
5
Ground
1
Unit 1 output
4.20 (typ)
(TX mode) (5.8 V typ at VHF)
2
Unit 1 (-) input
2.39 (typ)
(TX mode)
3
Unit 1 (+) input
2.39 (typ)
(TX mode)
4
Ground
5
Unit 2 (+) input
3.30 (typ)
(TX mode)
6
Unit 2 (-) input
3.35 (typ)
(TX mode)
7
Unit 2 output
2.23 (typ)
(TX mode)
8
Vcc
6.79
(TX mode)
1
AUX2 output (NU)
0
2
AUX3 output (TRB)
0.03
3
AUX4 output (NU)
0
4
Lock detect output
2.98
5
PD Vdd
2.98
6
Digital ground
GND
7
Serial data input
3.23
8
Serial clock input
0
9
Synth chip select
3.23
From U401-47
10
Modulation input
1.50
From U451-40
11
VMULT4 (NU)
2.98
12
VMULT3 (NU)
0
13
VRO
4.96
14
VMULT2
1.49
15
VMULT1
1.49
16
INDMULT (NU)
0
17
NC1
0
18
Ref select (NU)
0
19
Buffered 16.8 MHz out
1.54
20
Analog Vdd
3.00
21
V bypass (NU)
1.55
22
Analog ground
GND
23
Ref osc XTAL1
2.07
U150
Dual Opamp
U201
Freq Synthesizer
November 24, 2003
Pin Function
DC Voltage
0
2.65 (typ)
6.59
--
Comments (Condition)
(TX mode)
(TX mode) (4.25 V typ at VHF)
(TX mode)
Do not measure
GND
GND
To U251-19 (RX mode)
To U401-56
HKLN4216A
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
5-9
Table 5-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U201
Freq Synthesizer
24
Ref osc XTAL2
25
Ref osc warp output
3.00
26
Superfilter cap
4.48
27
Superfilter base (NU)
3.76
28
Superfilter output
4.52
29
NC2
30
Superfilter input
31
NC3
32
Prescaler input
1.97
33
Prescaler ground
GND
34
Prescaler Vdd
2.99
35
Prescaler Vref (NU)
1.97
36
Digital Vdd
2.99
37
TEST1 (NU)
0.01
38
TEST2 (NU)
0
39
Bias 2
3.38 (typ)
(1.34 V in TX mode)
40
Bias 1
1.50 (typ)
(3.20 V in TX mode)
41
Modulation output
3.42 (typ)
(1.62 V typ in TX mode)
42
CCOMP (NU)
43
Steering line IOUT
44
PD ground
45
Steering line IADAPT
46
Adapt switch (NU)
47
Voltage from charge pump
12.8
48
AUX1 output (NU)
2.98
1
TX VCO current adjust
4.50
2
RX VCO current adjust
4.35
3
Superfiltered input
4.51
4
Collector RF in amp
4.35
5
RX VCO base
1.27
6
RX VCO emitter
0.48
7
RX switch output (NU)
8
RX buffered VCO output
3.36
9
GND_FLAG
GND
10
TX buffered VCO output
3.36
11
GND_BUFFERS
GND
U251
VCO / Buffer
HKLN4216A
Pin Function
DC Voltage
Comments (Condition)
0
0
4.96
0
0.05
9.62 (typ)
Depends on frequency
GND
9.62 (typ)
Depends on frequency
0
0
November 24, 2003
5-10
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
Table 5-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U251
VCO / Buffer
12
Prescaler output
2.26
13
TX switch output (NU)
0.06
14
Vcc_BUFFERS
3.00
15
TX VCO emitter
0
(RX mode)
16
TX VCO base
0
(RX mode)
17
GND_LOGIC
GND
18
Vcc_LOGIC
3.00
19
TRB input
0.03
20
FLIP input
GND
1
Vin
7.48
2
Ground
GND
3
Control input
7.48
4
Bypass capacitor
1.26
5
Vout
4.96
1
Ground
GND
2
Feedback
1.23
3
Tap (NU)
0
4
Vin
7.48
5
Vout
3.23
6
Sense (NU)
7
Error (reset output)
3.20
8
Shutdown input
7.48
1
Vin
7.48
2
Ground
GND
3
Control input
7.48
4
Bypass capacitor
1.26
5
Vout
3.00
1
PD4_SCK serial clock input
2
PD5_SS
3.23
ASFIC chip select
3
PD6_VLIN
3.23
EEPROM chip select
4
PG7_R_W
3.21
5
PG6_AS
3.23
6
PG0_XA13
3.23
7
PB7_ADDR15
0.026
8
PB6_ADDR14
0.028
9
PB3_ADDR11
3.06
U310
5 V Regulator
U320
3.3 V Regulator
U330
3 V Regulator
U401
Microprocessor
November 24, 2003
Pin Function
DC Voltage
Comments (Condition)
From U201-2 (RX mode)
0
0
HKLN4216A
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
5-11
Table 5-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U401
Microprocessor
10
PB1_ADDR9
3.05
11
PB2_ADDR10
0.16
12
VDD
3.23
13
VSS
GND
14
PBO_ADDR8
3.05
15
PB5_ADDR13
0.13
16
PG1_XA14
0.20
17
PG4_XA17
3.17
18
PG5_XA18
0
19
PG3_XA16
3.21
20
PG2_XA15
0.30
21
PB4_ADDR12
0.22
22
PF7_ADDR7
3.03
23
PF6_ADDR6
3.08
24
PF5_ADDR5
3.06
25
PF4_ADDR4
0.16
26
PF3_ADDR3
0.26
27
PF2_ADDR2
3.06
28
PF1_ADDR1
3.06
29
PFO_ADDR0
3.05
30
PC0_DATA0
0.69
31
PC1_DATA1
0.96
32
PC2_DATA2
1.10
33
PC3_DATA3
0.81
34
PC4_DATA4
0.62
35
PC5_DATA5
0.68
36
PC6_DATA6
0.67
37
PC7_DATA7
0.73
38
PH7_CSPROG
3.05
39
VDDL
3.23
40
VSSL
GND
41
PH6_CSGP2
3.23
42
PH5_CSGP1
3.23
43
PH4_CSIO
0
44
PH3_PW4
3.21
45
PH2_PW3
0
HKLN4216A
Pin Function
DC Voltage
Comments (Condition)
On/off control output
November 24, 2003
5-12
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
Table 5-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U401
Microprocessor
46
PH1_PW2
3.00
47
PH0_PW1
3.23
48
XIRQ
3.00
49
PI7
1.48
RX enable
50
PI6
0.01
TX enable
51
PI5
3.23
52
PI4
0
Green LED enable
53
PI3
0
Red LED enable
54
PI2
0
55
PI1
0
56
PI0
2.98
Lock detect from U201-4
57
MODB_VSTBY
3.22
Boot mode enable
58
MODA_LIR
3.12
59
AVDD
3.23
60
PE7_AN7
3.20
61
PE6_AN6
3.20
62
PE5_AN5
2.91
VOX threshold detect
63
PE4_AN4
0.73
RSSI input
64
PE3_AN3
0.14
65
PE2_AN2
1.62
66
PE1_AN1
0 - 3.3 V
67
PE0_AN0
2.48
68
VRL
0
69
VRH
3.20
70
AVSS
GND
71
PJ0_CSGP3
3.23
72
PJ1_CSGP4
0
73
PJ2
3.23
74
PJ3
3.23
75
PJ4
3.23
76
PJ5
0
77
PJ6
3.23
Bottom option button
78
PJ7
3.23
Top option button
79
PA0_IC3
0
80
PA1_IC2
1.57
81
PA2_IC1
3.00
November 24, 2003
Pin Function
DC Voltage
Comments (Condition)
Synth chip select
Volume control wiper
33% of battery voltage
Side PTT button
External MIC PTT
HKLN4216A
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
5-13
Table 5-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U401
Microprocessor
82
PA3_IC4_OC5_OC1
83
PA4_OC4_OC1
0
Squelch detect input
84
PA5_OC3_OC1
0
Channel activity input
85
PA6_OC2_OC1
0
86
PA7_PA1_OC1
0
87
VSSR
GND
88
VDDR
3.23
89
ECLK (NU)
1.60
90
EXTAL
1.70
Clock from U451-28
91
XTAL
1.40
Not used
92
VDDSYN
0
93
XFC (NU)
0
94
RESET
3.20
95
LVOUT
0
96
IRQ
3.20
97
PD0_RXD
3.23
98
PD1_TXD
1.9
99
PD2_MISO
0
100
PD3_MOSI
3.23
1
Chip select
3.23
2
Serial data out
3
Write protect
3.23
4
Vss
GND
5
Serial data in
3.23
6
Serial clock
7
Hold
3.23
8
Vcc
3.23
1
A11
3.06
2
A9
3.08
3
A8
3.05
4
A13
0.13
5
A14
0.31
6
NC
3.17
7
EN_WE
3.21
8
Vcc
3.23
9
RESET
3.20
U402
EEPROM
U404
Flash ROM
HKLN4216A
Pin Function
DC Voltage
Comments (Condition)
3.00
From U320
From U401-3
0
0
From U401-4
November 24, 2003
5-14
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
Table 5-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U404
Flash ROM
10
A16
3.17
11
A15
0.30
12
A12
0.22
13
A7
3.03
14
A6
3.08
15
A5
3.06
16
A4
0
17
A3
0.24
18
A2
3.08
19
A1
3.05
20
A0
3.05
21
D0
0.69
22
D1
0.94
23
D2
1.08
24
GND
GND
25
D3
0.78
26
D4
0.59
27
D5
0.66
28
D6
0.67
29
D7
0.75
30
EN_CE
3.01
31
A10
0.16
32
EN_OE
1
VDD for analog circuits
3.00
2
DISC audio input
1.34
3
Ground for analog circuits
GND
4
DACU output
0
5
DACR output
0
6
DACG output
2.38 (typ)
7
VOX peak detector output
2.91
8
PLCAP for DC integrator
0.40
9
SQIN
0.01
10
Universal audio input/output
11
VDD for DACs
12
SQCAP
0
13
GCB2 general purpose output
0
U451
ASFIC_CMP
November 24, 2003
Pin Function
DC Voltage
0
Comments (Condition)
From U401-38
From U401-86
From U510
Power set (TX mode)
0
4.95
Audio PA_EN (unsquelched)
HKLN4216A
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
5-15
Table 5-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U451
ASFIC_CMP
14
GCB1 general purpose output
0
15
GCB0 general purpose output
3.00
16
Squelch channel activity output
0
To U401-84
17
Squelch detect digital output
0
To U401-83
18
PL/low speed data I/O
1.50
19
High speed data I/O
3.00
20
Chip select
3.23
21
Serial clock input
0
22
Serial data input
3.23
23
Ground for clock synthesizer
GND
24
Loop filter cap for clock syn
0.74
25
PLCAP2 for LS integrator
1.17
26
Not used
27
Vdd for clock synthesizer
3.00
28
Clock synthesizer output
1.70
29
1200 Hz ref for MDC decode
3.00
30
GNDDO
GND
31
Ground for digital circuits
GND
32
Vdd for analog switches
4.96
33
Vdd for digital circuits
3.00
34
16.8 MHz master clock input
1.54
35
GCB3 general purpose output
3.00
36
TX audio return from option
0
37
GCB4 general purpose output
0
38
GCB5 general purpose output
0
39
RX audio send to option
1.48
40
Modulation output
1.50
41
RX audio out to power amp
1.51
42
Flat TX audio return from option
0.20
43
RX audio return to option
1.50
44
Flat TX audio send to option
1.50
45
Vdd for audio path I/O filters
3.00
46
Mic audio input
1.50
47
Ground for audio path I/O filters
GND
48
Ext mic audio input (not used)
HKLN4216A
Pin Function
DC Voltage
Comments (Condition)
BW select (25 kHz mode)
From U401-2
0
Internal MIC enable
To U201-10
0
November 24, 2003
5-16
Notes:
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
Table 5-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U480
Dual Opamp
1
Unit 1 output
2.48
2
Unit 1 (-) input
2.48
3
Unit 1 (+) input
2.46
4
Ground
GND
5
Unit 2 (+) input
0.28
6
Unit 2 (-) input
0.29
7
Unit 2 output
8
Vcc
4.96
1
Enable/shutdown
0.12
(Unsquelched)
2
Bias reference
3.26
(Unsquelched)
3
(+) input
3.26
(Unsquelched)
4
(-) input
3.27
(Unsquelched)
5
(-) output
3.25
(Unsquelched)
6
Vcc
7.48
(Unsquelched)
7
Ground
GND
8
(+) output
3.29
1
Unit 1 output
1.75
2
Unit 1 (-) input
1.56
3
Unit 1 (+) input
1.55
4
Ground
GND
5
Unit 2 (+) input
1.55
6
Unit 2 (-) input
1.56
7
Unit 2 output
1.38
8
Vcc
4.96
U490
Audio Power Amp
U510
Dual Opamp
Pin Function
DC Voltage
Comments (Condition)
0
(Unsquelched)
1. All voltages are measured with a high-impedance digital voltmeter and expressed in volts DC relative to ground (0 V).
2. Voltages are measured with a DC input voltage of 7.50 + .02 volts DC applied to the battery connector (J301).
3. All voltages are measured in the squelched receive mode, unless otherwise indicated.
4. Voltages are identical for VHF and UHF models unless otherwise indicated.
November 24, 2003
HKLN4216A
Chapter 6 VHF Schematic Diagrams, Overlays, and
Parts Lists
6.1
Introduction
This section provides schematic diagrams, overlays, and parts lists for the radio circuit boards and
interface connections.
6.1.1
Notes For All Schematics and Circuit Boards
* Component is frequency sensitive. Refer to the Electrical Parts List for value and usage.
1. Unless otherwise stated, resistance values are in ohms (K = 1000), capacitance values are in
picofarads (pF) or microfarads (µF), and inductance values are in nanohenries (nH) or microhenries (µH).
2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multimeter or equivalent. If the board has been removed from the chassis, the transmitter module
mounting screws may be used for ground connection. (Note: The antenna nut bracket is not
connected to ground.) Operating mode dependent voltages are followed by (RX) for receive
mode, (TX) for transmit mode, (UNSQ) for unsquelched mode, etc.
3. RF voltages on VHF models are measured with a Fluke model 85 RF probe. The indicated
voltages expressed in mV (RF) are DC level readings which correspond approximately 1:1 to
the RF voltage level in mV rms. RF voltages in the Receiver Front End and Receiver Back
End circuits are measured with an on-channel 100 mV (-7 dBm) RF signal applied to the
antenna jack J140.
4. RF voltages on UHF models are measured both with a high-impedance RF voltmeter having
a bandwidth in excess of 500 MHz (levels are expressed in dBm) and with a Fluke model 85
RF probe [levels are expressed in mV (RF)]. These indicated voltages are DC level readings
which correspond approximately 1:1 to the RF voltage level in mV rms, and are only approximate for UHF frequency measurements. RF voltages in the Receiver Front End and Receiver
Back End circuits are measured with an on-channel 100 mV (-7 dBm) RF signal applied to the
antenna jack J140.
5. Audio voltages are measured with a high-impedance AC rms voltmeter. The indicated voltages are expressed in mV rms. Receive mode voltages are followed by (RX) and are measured with an on-channel signal with 1 kHz modulation at 60% deviation (3 kHz for 25 kHz
channels, or 1.5 kHz for 12.5 kHz channels). Transmit mode voltages are followed by (TX)
and are measured with a 1 kHz, 10 mV rms signal present at the external microphone input
(accessory connector J471 pin 4 hot and pin 7 ground).
6. Reference Designators are assigned in the following manner:
Ref. No. Series
Circuit Block
1-99
RF Front End
100-149
Transmitter RF Stages
150-200
Transmitter Power Control
201-250
Frequency Synthesizer
251-300
VCO
6-2
VHF Schematic Diagrams, Overlays, and Parts Lists: Introduction
Ref. No. Series
Circuit Block
301-400
DC Regulation
401-450
Microprocessor
451-550
Audio
7. Circuit Block Interconnection Legend:
Name
November 24, 2003
Description
USWB+
Unswitched Battery Voltage (always on)
5V
5 volts (regulated)
5R
5 volts in RX mode only
5T
5 volts in TX mode only
RESET
Low-line reset signal from U320 to uP
D3_3V
Digital 3.3 volts (regulated)
3V
Analog 3 volts (regulated)
TX_ENA
Transmit enable signal from uP to transmitter
PWR_SET
DC voltage from ASFIC to TX power control
DEMOD
RX audio from backend to ASFIC
BW_SEL
Backend filter BW select from ASFIC
RSSI
RX signal strength indication from IFIC to uP
IF_IN/OUT
44.85 MHz from 1st mixer to high IF filter
RF_IN/OUT
RX signal from antenna switch to front end
MOD OUT/IN
TX modulation from ASFIC to synthesizer
16_8_MHZ
Ref osc signal from synthesizer to ASFIC
SYNTH_CS
Synthesizer chip select from uP
SPI_CLK
Serial clock from uP
SPI_DATA_OUT
Serial data from uP
LOCK
Lock detect indication from synth to uP
PRESC
VCO freq feedback from VCOBIC to synth
V_STEER
Steering line voltage from synth to VCO's
V_SF
Super-filtered 4.5 volts from synth to VCOBIC
VCO_MOD
TX modulation from ASFIC to synthesizer
TRB
TX/RX control from synth to VCOBIC
RX_INJ
Buffered RX VCO output to RX 1st mixer
TX_INJ
TX VCO output to transmitter input
HKLN4216A
VHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic
6.1.2
6-3
Six Layer Circuit Board
SIDE 1
LAYER 1 (L1)
LAYER 2 (L2)
LAYER 3 (L3)
LAYER 4 (L4)
LAYER 5 (L5)
LAYER 6 (L6)
INNER LAYERS
SIDE 2
Figure 6-1. Six-Layer Circuit Board: Copper Steps in Layer Sequence
6.2
Speaker and Microphone Schematic
MK1
1
MATES WITH J470 ON
RADIO BOARD
2
SP1
1
MATES WITH J491 ON
RADIO BOARD
2
Figure 6-2. Speaker and Microphone Schematic
6.2.1
Speaker and Microphone Parts List
Reference
Designator
HKLN4216A
Motorola Part
No.
Description
MK1
5085880L01
Microphone, electret
SP1
5085738Z08
Speaker assembly with
connector
November 24, 2003
6-4
VHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic
Notes:
November 24, 2003
HKLN4216A
VHF 146-174 MHz PCB 8486342Z13-C Schematic Diagrams, Overlays, and Parts Lists
6-5
Chapter 6 VHF 146-174 MHz PCB 8486342Z13-C Schematic Diagrams, Overlays, and Parts Lists
VHF R2
USWB+
USWB+
5V
5V
5T
5T
5R
5R
3V
USWB+
5T
USWB+
5T
3V
5V
5R
5V
5R
TX_ENA
TX_ENA
PWR_SET
TX_VHF_R2
PWR_SET
CONTROLLER
DEMOD
DEMOD
BW_SEL
BW_SEL
RX_FE_VHF_R2
RX_BE
IF_OUT
IF_IN
RX_IN
RSSI
RSSI
RX_OUT
TX_INJ
RX_INJ
MOD_OUT
MOD_IN
16_8_MHZ
16_8_MHZ
5V
3V
5R
3V
5V
3V
5R
3V
PRESC
SYNTH_VHF_R2
SYNTH_CS
SPI_CLK
SPI_DATA_OUT
LOCK
V_STEER
PRESC
SYNTH_CS
SPI_CLK
SPI_DATA_OUT
LOCK
V_SF
VCO_MOD
TRB
RX_INJ
V_STEER
V_SF
VCO_MOD
VCO_VHF_R2
TX_INJ
TRB
Figure 6-3. VHF (146-174 MHz) Radio Circuit Block Interconnect Diagram
HKLN4216A
November 24, 2003
6-6
146-174 MHz Schematic Diagrams, Overlays, and Parts Lists
Chapter 6 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists
VHF R2 Front End
FE_5R
5R
R20
6.8K
1%
1
UMT1
6
1
1
C20
R23
22K
1%
1000pF
C2
36pF
FE_RF_IN
RX_IN
C1
22pF
1%
1%
C4
15pF
L1
68nH
2%
C3
1%
47pF
1%
5
Q22
2
SH40
SHIELD
1000pF
4
C5
3.0pF
3.3%
L2
68nH
2%
C6
15pF
1%
L3
68nH
2%
C8
30pF
L4
68nH
2%
3
C7
33pF
1%
1%
C9
NU
1
1000pF
L21
NU
R24
1000pF
750
0.74V
NU
L51
150nH
C25
L52
51
680nH
FE_IF_OUT
IF_OUT
82pF
1000pF
0.1uF
C23
C24
C51
R51
C99
R22
6.8K
C22
R26
0
L22
100nH
3
R25
5.6K
3.9V
SH1
SHIELD
C26
R21
100
3
1
2
C31
30pF
C29
20pF
1%
1%
C30
Q21
24pF
1%
BFS540
L31
68nH
2%
C32
C33
24pF
1%
L32
68nH
2%
C34
56pF
1%
C35
27pF
1%
L33
68nH
4
T41
3
2%
2
C36
24pF
1%
56pF
1%
1
6
RF BALUN 5
NC
CR41
HSMS2829
NC
1
2
CR1
MMBD352
IO1
3
4
FE_RF_INJ
C41
RX_INJ
C40
20pF
1%
15pF
1%
L40
68nH
L41
68nH
2%
2%
C42
36pF
1%
T42
15pF
1%
6
R40
20pF 1K
1%
4
2
1
IF BALUN 5
NC
C44
IO4
IO2
2
C43
IO3
3
NC
1
TP1
TP2
1
Figure 6-4. VHF (146-174 MHz) PCB 8486342Z13-C Receiver Front End Schematic Diagram
November 24, 2003
HKLN4216A
VHF 146-174 MHz PCB 8486342Z13-C Schematic Diagrams, Overlays, and Parts Lists
6-7
RX Back End (Overtone)
7
1
C68
U52-1
TC7W04F
FL53
CFWC455E
R65
39K
0.1uF
1
IN
R66
20K
OUT 2
0V for 12.5kHz
C69
R63
39K
D51
0.1uF
2
1 IN
1
SH50
SHIELD
8
U52-4
PWR_GND
3
5
SH52
SHIELD
1
GND
3
2
C74
R62
3.3K
NC
VCC
1
OUT 2
R67
20K
GND1
U52-3
TC7W04F
D52
R64
20K
FL54
CFWC455G
3
5V
4
2
6
R60
2.4K
1
3
4
1 IN
4
C63
C62
FL52
FLTR
9180468V04
0.1uF
0.1uF
OU T 2
C64
GND
C66
C65
0.1uF
0.1uF
47pF
5V
C67
C61
0.1uF
R72
390
0.1uF
3
3
Q70
1
5V
C91
C90
0.1uF
10uF
C92
0.1uF
R53
C55
FL51
MXF45
44.85MHz
0.1uF
R54
5.1K
OUT 6
3 IN
C52
18pF
C53
9.1pF
1.1%
0.74V
120pF
C93
GND2
2 CC1
5 CC2
GND1
IF_IN
1
3.6pF
NU
C57
3.9pF
C59
0.1uF
2.7pF
3
L53
IF_IN
C58
3.05V
33K
R52
12K
1
Q51
CR51
3
L54
1.2uH
2%
LIMOUT 11
GND
C70
R73
1.8K
130pF
R74
1.2K
Y70
45B02
455KHz
1
R57
4.7K
2
3
C81
2
C80
R80
5.1K
33pF
1%
PBR941
1
U51
SA616
15
C71
0.1uF
C60
0.1uF
2
VCC
1 RFIN
2 RFIN_DEC
51
9 RSSI_FEED
6
2
10 QUADIN
R90
LIMIN 14
LIM_DEC1 13
LIM_DEC2 12
5V
5 RSSIOUT
R55
330
0.1uF
7 AUDIO_FEED
8 AUDIOOU T
C56
IFAMP_DEC1
IFAMPI N
IFAMP_DEC2
IFAMPOUT
1.6K
3 OSCOUT
4 OSCIN
3.39V
5V
19
18
17
16
MMBT3904
R91
MIXOUT 20
IF_5V
47pF
GND2
BW_SE L
3
TC7W04F
5V for 25kHz
GND2
U52-2
R61
100K
IF_BAND_SEL
GND1
5V
R75
IF_RSSI
2.1V When -47 dBm @ antenna
RSSI
22pF
1%
C72
12K
0.1uF
4
R81
1K
C82
Y51
TSS2_44_395MHZ
44.395MHz
3 OU T
L81
1uH
33pF
1%
R82
NU
IN
GND1 GND
4
2
1
R76
12K
1%
R77
R78
8.2K
1%
680
IF_DEMOD
1.5V
DEMOD
C73
4700pF
Figure 6-5. VHF (146-174 MHz) Receiver Back End Schematic Diagram
HKLN4216A
November 24, 2003
6-8
146-174 MHz Schematic Diagrams, Overlays, and Parts Lists
VHF R2 Synthesizer
FN_V_SF
4.5V
SH200
SHIELD
SH201
SHIELD
R247
270K
C232
C233
1000pF
0.1uF
4.7uF
V_SF
6
22
33
44
R230
200K
C231
1
FN_PRESC
C241
1200pF
NC
NC
NC
31 NC3
29 NC2
17 NC1
NC
NC
42 CCOMP
18 REFSEL
NC
32 PREIN
27 SFBASE
26 SFCAP
PRESC
R248
51
C230
39 BIAS2
40 BIAS1
2.2uF
21 VBPASS
35 PVREF
NC
NC
U201
AUX4
AUX3
AUX2
AUX1
VMULT4
VMULT3
VMULT1
VMULT2
63A 27
PD_VDD
PRE_VDD
AVDD
DVDD
VRO
VCP
FN_SYNTH_CS
SYNTH_CS
FN_CLK
470pF
1.5K
45
38 NC
37 NC
3
2
1
48
11
12
14
15
C243
FN_TRB
NC
R246
TRB
NC
NC
NC
NC
FN_3V
3V
Reference Oscillator
Crystal
TCXO
C201
220pF
NU
C202
C203
C206
62pF
2.7pF
NU
NU
NU
0.01uF
R202
R206
150k
NU
47k
100
D201
1SV232
NU
Y201
Y202
14R06
NU
NU
45J68
C208
C209
470pF
470pF 470pF
R244
51
VCO_MOD
R205
100
C202 C201
62pF 220pF
1%
560nH
C212
C213
C214
2.2uF
.01uF
1000pF
R206
NU
NU
3
OU T
IN
GND1 GND
4
2
R220
150
C220
FN_16_8
R202
150K
R221
150
22pF
C205
C221
NU
Y202
45J68
NU
4
.01uF
3V
0V
VCC
3
Y201
14R06
16.8MHz
1uF
16_8_MHZ
5V
0.1uF
C206
TP240
C245
FN_VCO_MOD
L211
1200pF
1
XTAL2 24
XTAL1 23
V_STEER
3.0V to 8.0V
TP200
100K
TX: 3V
RX: 0V
C210
C207
1
C244
R243
2K
0.1uF
C211
470pF
FN_V_STEER
R245
5
34
20
36
13
47
SPI_CLK
25
16 NC
28
46 NC
4
43
MODOUT 41
FREFOUT 19
9 CEX
8
CLK
FN_MOD
MOD_IN
LOCK
LOCK: 3V
UNLOCK: 0V
C204
WARP
INDMULT
SFOUT
ADAPTSW
LOCK
IOUT
IADAPT
TEST2
TEST1
30 SFIN
7 DATA
10 MODIN
FN_DAT A
SPI_DATA_OUT
FN_LOCK
DGND
AGND
PRE_GND
PD_GND
1
OUT VCON
16.8MHz
GND
2
1
3V
0V
A3 4
5
A2 6
A1
3 K3
2 K2
1 K1
C222
.01uF
R223
100
D220
C223
C218
C219
2.2uF
0.1uF
.01uF
1
C224
D201
C203
1SV232
2.7pF
3.7%
NC 3
K3
2 K2
1 K1
.01uF
A3 4 NC
A2 5
A1 6
D221
R227
150K
C228
C227
C226
C225
0.1uF
1000pF
10uF
10uF
5V
FN_5V
R212
5V
0
C215
C216
C217
2.2uF
0.1uF
1000pF
Figure 6-6. VHF (146-174 MHz) PCB 8486342Z13-C Synthesizer Schematic Diagram
November 24, 2003
HKLN4216A
VHF 146-174 MHz PCB 8486342Z13-C Schematic Diagrams, Overlays, and Parts Lists
6-9
VHF R2 VCO
V_SF
VCO_VSF
4.5V
V_S F
R273
L270
560nH
C270
SH251
SHIELD
SH250
SHIELD
1200pF
SH253
SHIELD
0.1uF
3V
R270
18
300
C274
VCO_3V
C285
C292
0.1uF
1200pF
C272
1
C273
C271
R274
33
.01uF
L271
NU
.01uF
R271
8.2K
1
2
3
4
5
6
16
15
20
19
D251
1
3
C253
16pF
C255
18pF
2
L253
100nH
L252
560nH
1%
C254
3.3pF
3.0%
L254
33nH
2%
1%
C256
R254
220
10pF
1.0%
R253
VCO_V_STEER
V_STEER
3.0V to 8.0V
L251
C251
C258
TX_IADJ
RX_IADJ
SUPER_FLTR
COLL_RFIN
RX_BASE
RX_EMITTER
TX_BASE
TX_EMITTER
FLIP_IN
TRB_IN
1200pF
47
L255
330nH
C257
560nH
R272
9.1K
36pF
1%
9 GND_FLAG
11
17 GND_BUFFERS
GND_LOGIC
1
14
VCC_BUFFERS
18
VCC_LOGI C
0.1uF
1
R284
330
L282
47nH
L292
68nH
C290
TX_OU T 10
RX_OUT 8
7
RX_SWITCH 13
TX_SWITCH
12
PRESC_OUT
VCO_TX_INJ
TX_INJ
51pF
NC
NC
U251
VCO_5R
4 50 U5
C291
L291
27nH
36pF
L281
5R
68nH
C284
R281
9.1K
1200pF
C281
R282
1200pF
750
1
C282
VCO_RX_INJ
RX_INJ
.01uF
L262
560nH
C286
D261
1
3
2
L263
100nH
11pF
C263
27pF
1%
C265
15pF
C264
4.7pF
2.1%
L264
47nH
2%
C268
V_SF
R261
51K
R280
6.8K
9.1pF
2
Q280
BFS540
R283
180
C283
1200pF
C266
R262
6.8K
VCO_MOD
0
L283
NU
1%
2.7pF
3.7%
VCO_MOD
R286
3
10pF
1.0%
C267
36pF
1%
R264
220
R263
C269
1500pF
V_SF
30
L265
330nH
R276
L276
1K
100nH
C277
VCO_PRESC
PRESC
1200pF
C276
5.1pF
D262
1SV229
VCO_TRB
R275
TX: 3V
RX: 0V
TRB
0
C275
1200pF
Figure 6-7. VHF (146-174 MHz) Voltage Controlled Oscillator Schematic Diagram
HKLN4216A
November 24, 2003
6-10
146-174 MHz Schematic Diagrams, Overlays, and Parts Lists
VHF R2 Tx
PA_USWB+
USWB+
PA_TX_EN A
C170
3
R171
1
TX_ENA
Q171
6.8K
2
5
4
0.1uF
MMBT3904
6
Q170
EMB10
R524
10K
SH100
SHIELD
3
1
2
1
C172
1500pF
C120
R158
C155
1.5K
0.1uF
C157
C154
0.1uF
1500pF
R120
150
C151
1500pF C150
1500pF
C156
Q150
.01uF
TP150
1
R157
5.6K
2
8
U150-1
C159
4
LM2904
1500pF
PA_PWR_SET
8
3
1
100K 1%
R153
100K
1%
57R01
7
R154
5
2
R156
330
LM2904
C153
1500pF
C121
R151
100K 1%
4
C152
R121
150
U151
6
U150-2
3
1
1500pF
R152
22
R155
100K
1%
L120
560nH
1500pF
R150
0.1
0.47uF
R162
PWR_SET
10K
C158
1500pF
PA_5T
R110
C114
0.1uF
1500pF
C111
R107
150
R106
4.7K
L100
560nH
360
R111
NU
NU
C115
C116
1uF
0.1uF
J140
C137
S1
S2
200pF
L110
5T
C109
C113
1500pF
560nH
C110
C112
VR110
0.1uF
1500pF
4.3V
G1
G2
C140
T1
T2
13pF
C102
0.1uF
C103
1500pF
L103
30nH
L101
560nH
R105
1.2K
PA_TX_IN J
R101
C100
18
1500pF
TX_INJ
R100
300
R102
300
L102
1
3
C105
C107
NU
10pF
Q100
C106
1500pF
BFS540
100nH
C104
C171
NU
2.7pF
2
VGG
1
RFIN
C133
3.3pF
C135
3.9pF
L130
L131
L132
3
VDD
RFOUT
4
GND
5
C117
D120
MA4PH261
1000pF
M140
ANTENNA_NUT
C130
43.67nH
C132
43.67nH
C134
43.67nH
C136
C141
12pF
27pF
27pF
13pF
18pF
NC
1 TAB1
2 TAB2
3
TAB3
TAB4 4
NC
NC
L140
30.54nH
U110
2
RA07M1317M_VHF
R103
3.3K
C124
L121
47nH
R104
51
C131
3.3pF
PA_RX_OU T
RX_OUT
C101
C108
C122
D121
C123
1500pF
0.1uF
15pF
MA4PH261
15pF
1500pF
Figure 6-8. VHF (146-174 MHz) PCB 8486342Z13-C Transmitter and Power Control Schematic Diagram
November 24, 2003
HKLN4216A
VHF 146-174 MHz PCB 8486342Z13-C Schematic Diagrams, Overlays, and Parts Lists
6-11
5V +3 V
3V
SW_B +
SW_B
5V
Controller
VS_AUDIO_SEL
CNTL_PWR_SET
OPT_MI C
PWR_SET
OPT_TX_AUD_FLAT_RETURN
OPT_TX_AUD_RETURN
DEMO D
27
OPT_RX_AUD_SEND_DETECTO R
26
25
OPT_RX_AUD_SEND_UNMUTED
24
23
OPT_RX_AUD_RETURN
22
21
VS_GAIN_SEL
SW_B +
10
9
C500
8
7
1000pF
6
C503
1000pF
MOD_OUT
BATT_CHARGE
RESET
SC I
ASFIC_CS
F1200
uP_CL K
BOOT_ENA
EXT_MIC_PTT
16_8_MHZ
C501
CNTL_SPI_CLK
1uF
SPI_CLK
CNTL_SPI_DATA_OUT
5
SPI_DATA_OUT
R502
100
4
3
2
1
30
29
R504
32
31
100
CNTL_SYNTH_CS
SYNTH_CS
R501
100
CNTL_LOCK
LOCK
J460-1
CONNECTOR
ACCESSORY/KEYPA D
CNTL_RSSI
R505
TP40 3
100
C406
RSSI
CNTL_TX_ENA
TX_ENA
TP40 4
150pF
+
SW_B
USWB
BATT_DETECT
SCI
RESET
ASFIC_CS
F120 0
uP_CLK
BOOT_ENA
EXT_MIC_PTT
HSIO
VOX
LSIO
CH_ACT
SQ_DET
SPI_DATA_OUT
3V
DISPL_COM_DATA_SEL
VS_RAC
OPT_DATA_READY
SPI_CLK
SW_B +
D3_3V
+
3V
SPI_DATA_IN
NC
D3_3 V
5V
5V
SW_B +
1000pF
R503 10 0
C50 4
C403 150pF
BK1005HM47
HSIO
11
LSI O
12
E500
1
BW_SEL
CNTL_MOD_OU T
MOD_OUT
VOX
13
AUDI O
16_8_MHZ
SQ_DET
15
14
BW_SEL
CNTL_16_8_MHZ
CH_ACT
16
3V
SPI_DATA_OUT
17
SPI_CLK
19
18
C405 150pF
D3_3 V
20
DEMOD
CNTL_BW_SEL
OPT_TX_AUD_SEND
28
PWR_SET
CNTL_DEMOD
5V
5R
5T
3V D3_3V
CNTL_USWB+
USWB+
CNTL_5V
5V
TP301
CNTL_5R
5R
CNTL_5T
BACKLIGHT
5T
KEYPAD_ROW
CNTL_3V
SYNTH_C S
3V
KEYPAD_COL
1000pF
1000pF
C404
1000pF
C407
C409
1000pF
C408
1000pF
1000pF
C507
1000pF
C40 2
C505
1000pF
C506
S441
SWITCH
1 A1
3 A2
B1 2
OPT_BUTTON_ 2
FREQ_SEL_ 3
B1 2
B2 4
S440
SWITCH
8
PC0
PC1
PC2
C0
C1
9 7
PC3
GND1
GND
1 A1
3 A2
TX_EN A
BATT_CHARGE
RX_ENA
RX_EN A
VOLUME
VOLUME
3V
5T
5R
5V
D3_3V
RESET
OPT_BUTTON_ 1
B1 2
B2 4
S443
SWITCH
RSSI
PTT
B2 4
S442
SWITCH
1 A1
3 A2
MICROPROCESSOR
SWB+
OPT_EN A
VS_CS
VS_IN T
LOCK
USWB +
DISP_EN A
1
2
4
C0
C1
FREQ_SEL_ 0
ON_OFF
DC_REGULATION
ON_OF F
TX_EN A
FREQ_SEL_ 1
FREQ_SEL_ 2
Figure 6-9. VHF (146-174 MHz) Controller Interconnect Schematic Diagram
HKLN4216A
November 24, 2003
6-12
146-174 MHz Schematic Diagrams, Overlays, and Parts Lists
Microprocessor
D3_3 V
D3_3V
R416
20K
R410
10K
D3_3V
C411
C410
0.1uF
10uF
C413
C412
1000pF
R412
100K
0.1uF
8
6
1
3
7
5
4
1
TP405
VCC
SCK
CS
2
WP
SO
HOLD
SI VSS
0.1uF
Q410
1
TP402
C418
R417
10K
R411
6
1
SC I
820
SH401
SHIELD
SH400
SHIELD
C419
2
1000pF
3
1
R419
4.7K
4
U402
1
X25128-2.7
EEPROM
1
TP401
LSI O
CH_ACT
SPI_DATA_IN
SQ_DET
SPI_DATA_OUT
HSI O
OPT_DATA_READY
SPI_CLK
uP_CLK
C400
R400
NU
D3_3 V
R418
NU
100K
C414
C417
C415
DISPL_COM_DATA_SEL
C416
0.1uF
1000p F 1000pF
2
D(0)
D(1)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
ON_OFF
PC0_DATA0
PC1_DATA1
PC2_DATA2
PC3_DATA3
PC4_DATA4
PC5_DATA5
PC6_DATA6
PC7_DATA7
A(18:0)
C430
C431
0.1uF
1000pF
D3_3V
R433
100K
21
22
23
25
26
27
28
29
D0
D1 U404 A0
D2 FLASH A1
D3
A2
A3
D4
A4
D5
A5
D6
A6
D7
A7
6
A8
NC
A9
A10
A11
A12
A13
A14
A15
A16
GND
R431
NU
20
19
18
17
16
15
14
13
3
2
31
1
12
4
5
11
10
C432
C433
0.1uF
1000pF
0
12
88
39
59
LVOUT 95
VRL 68
VRH 69
EXTAL 90
XTAL 91
VDD
VDDR
VDDL
AVDD
67
66
65
64
63
62
61
60
PTT
EXT_MIC_PTT
FREQ_SEL_0
FREQ_SEL_1
VS_RAC
FREQ_SEL_2
FREQ_SEL_3
OPT_BUTTON_1
OPT_BUTTON_2
5V
1
28
A(0)
A(1)
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
A(10)
A(11)
A(12)
A(13)
A(14)
A(15)
A(16)
R430
100K
D(0) 11
D(1) 12
D(2) 13
D(3) 15
D(4) 16
D(5) 17
D(6) 18
D(7) 19
VDD A0
A1
U403 A2
A3
NU A4
SRAM A5
A6
D1
A7
D2
A8
D3
A9
D4
A10
D5
D6
A11
D7
A12
A13
D8
A14
A(0)
A(1)
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
A(10)
A(11)
A(12)
A(13)
A(14)
4
6
C445
C440
C441
C442
C443
C444
C401
.01uF
.01uF
.01uF
.01uF
.01uF
.01uF
.01uF
0.1uF
R440 4.7K
.01uF
200K 1%
R421
100K
1%
C422
D424
3V
.01uF
RED LED
D440
BRPY1204W
20
CS
22
OE
27
WE
VSS
14
A(18)
NU
0.1uF
VOLUME
3
R442
220
SW_B+
C447
R441 4.7K
2
Q440-2
C420
Q440-1
5
10
9
8
7
6
5
4
3
25
24
21
23
2
26
1
C446
SW_B +
A(17)
R434
PE0_AN0
PE1_AN1
PE2_AN2
PE3_AN3
PE4_AN4
PE5_AN5
PE6_AN6
PE7_AN7
BOOT_ENA
R420
24
R432
NC NC
71
72
73
74
75
76
77
78
D414
D3_3V
8
VCC
30
EN_CE
32
EN_OE
7
EN_WE
RESET 9
AT49LV001N_70VI
D(0)
D(1)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
86
85
84
83
82
81
80
79
A(7)
A(6)
A(5)
A(4)
A(3)
A(2)
A(1)
A(0)
D(7:0)
D3_3 V
VDDSYN 92
XFC 93
30
31
32
33
34
35
36
37
U401
MC68HC11FL0
22
23
24
25
26
27
28
29
DISP_ENA
PH0_PW 1
PH1_PW 2
PH2_PW 3
PH3_PW 4
PH4_CSI O
PH5_CSGP1
PH6_CSGP2
PH7_CSPROG
PJ0_CSGP3
PJ1_CSGP4
PJ2
PJ3
PJ4
PJ5
PJ6
PJ7
NC
VSS
VSSR
VSSL
AVSS
1
R445
4.7K
47
46
45
44
43
42
41
38
RESET
89
96 NC
48
94
4
58
57
13
87
40
70
NC
ECLK
IRQ
XIRQ
RESET
PG7_R_W
MODA_LIR
MODB_VSTBY
PI 7
PI6
PI5
PI4
PI 3
PI 2
PI1
PI0
Q402
3
49
50
51
52
53
54
55
56
R446
10K
PB5_ADDR13
PB4_ADDR12
PB3_ADDR11
PB2_ADDR10
PB1_ADDR9
PBO_ADDR8
1
1000pF
NC NC
A(13)15
A(12) 21
A(11) 9
A(10) 11
A(9) 10
A(8) 14
Q403
2
PG0_XA13
PG1_XA14
PG2_XA15
PG3_XA16
PG4_XA17
PG5_XA18
PG6_AS
PA7_PA1_OC1
PA6_OC2_OC1
PA5_OC3_OC1
PA4_OC4_OC1
PA3_IC4_OC5_OC1
PA2_IC1
PA1_IC2
PA0_IC3
3
BACKLIGH T
6
16
20
19
17
18
5
PF7_ADDR7
PF6_ADDR6
PF5_ADDR5
PF4_ADDR4
PF3_ADDR3
PF2_ADDR2
PF1_ADDR1
PFO_ADDR0
NC
A(14)
A(15)
A(16)
A(17)
A(18)
SW_B +
R414
33K
R415
33K
F1200
7
PB7_ADDR15
8
PB6_ADDR14
SYNTH_CS
PD6_LVIN 3
PD5_SS 2
PD4_SCK 1
PD3_MOSI 100
PD2_MISO 99
PD1_TXD 98
PD0_RXD 97
NC
ASFIC_CS
R413
100K
R443
120
RB520S-30
R424
D3_3V
200K 1%
GREEN LED
C421
R422
100K
R423
100K
.01uF
BATT_DETECT
R425
100K
1%
RSSI
VO X
KEYPAD_CO L
KEYPAD_RO W
LOCK
VS_INT
VS_CS
OPT_ENA
TX_ENA
RX_ENA
Figure 6-10. VHF (146-174 MHz) PCB 8486342Z13-C Microprocessor Circuitry Schematic Diagram
November 24, 2003
HKLN4216A
VHF 146-174 MHz PCB 8486342Z13-C Schematic Diagrams, Overlays, and Parts Lists
6-13
R516
R523
NU
C512
10K
C514
6.8pF
R522
16pF
100K
R514
R512 150K
LM2904
R511
2
100K
3
DEMOD
Q520
8
1
R513
R515
7
1
5
6
C460
0.1uF
VR471
C511
C513
R518
220K
220pF
220pF
R519
100K
C519
4
R470
OPT_RX_AUD_SEND_DETECTO R
5
4
5V_A
8
IMX1
IMX1
C518
6
3
Audio
Q520
5V_A
100K
U510-1
4
2
U510-2
0.1uF
2.2K
OPT_RX_AUD_RETURN
LM2904
R521
NU
R520
100K
3V_A
NC
OPT_RX_AUD_SEND_UNMUTED
R480
0
OPT_TX_AUD_FLAT_RETURN
R517
OPT_TX_AUD_SEND
1uF
OPT_TX_AUD_RETURN
VS_AUDIO_SEL
VS_GAIN_SEL
3V_A
PWR_SET
VOX
3V_A
C451
0.1uF
C452
0.1uF
R462
24K
0.1uF
4.7uF
10 V
SQCAP
VDDDAC
UIO
SQIN
PLCAP
VOX
DACG
DACR
DACU
GND A
DISC
VDDA
12
11
10
9
8
7
6
5
4
3
2
1
C455
.022uF
CH_ACT
13
14
15
16
17
18
19
20
21
22
23
24
SQ_DET
LSIO
HSIO
ASFIC_CS
GCB2
GCB1
GCB0
CHACT
SQDET
LSIO
HSIO
CSX
CLK
DATA
GND
SYN
LCAP
U451
30C53
C456
SPI_DATA_OUT
0.1uF
3V
R517
0
Not Placed
R463
30K
24K
3V_A
R451
47K
R473
680
4
5
Q472
2.2K
Q471
3
6
C464
C465
C471
0.1uF
1000pF
2.2uF
R476
100K
2
4
2
3
5
Q470
D470
2.2K
C472
6
0.1uF
3
A_MOD_OUT
L471
390nH
C474
C473
150pF
150pF
4 S2
5 S4
NC
NC
.022uF
C458
C493
0.1uF
1000pF
1 M1
1
2.2K
SW_B+
3 M3
J470-1
R478
C478
C476
2
J491-1
INTERNAL
SPEAKER
.022uF 150pF
R494 C494
330K
2.2uF
7 S1
2 M2
VR474
MMBZ5250B
20V
C475
VR475
15V MMBZ5245B
NU
6 S3
SCI
VR473
20V MMBZ5250B
NC
R479
100K
C466
BOOT_ENA
J471
ACCESSORY
CONNECTOR
OPT_MIC
EXT_MIC_PTT
MOD_OUT
4
BATT_CHARGE
R475
180K
R477
RESET
0.1u F
R255
3.9K
1%
1
6
1
C477
5V
R474
330
NC
0.1uF
2
R471
NC
MICROPHONE
CONNECTOR
1
E451
2
16_8_MHZ
BK1005HM471
C459
F1200
0.1uF
uP_CLK
5V_B
C481
.01uF
E452
BK1005HM471
5V
E453
5V_A
2
5V
BK1005HM471
C497
5V_B
C482
.01uF
Not:Placed:NU
3
Q481
Not_Placed:NU 1
0.1uF
R486
100K
Not_Placed:NU
R483
150K
Not_Placed:NU
R487
0
5V_B
8
2
3
C499
82pF
C483
0.1uF
R484
2.2K
1
Not_Placed:NU
4
C484
U480-1
3
R485 100K 1
Q490
R492
0
24K
R490
2.2K
Not_Placed:NU
Not_Placed:NU .033uF
LM2904
Not_Placed:NU
R491
DC Level 0.3 - 0.4 V low
Supply = 7.42
1/2 Supply = 3.22
1
3
2
4
C488
C480
R469
0.1uF
10
3 J491-3
470pF
TDA854
MODE
5
INPOS OUTNEG
SVR OUTPOS 8
INNEG
C479
150pF
6
VCC
U490
GN D
4 J491-4
C489
1
470pF
7
C492
R496
10K
Not_Placed:NU
R497
1MEG
10uF
Q482
Not_Placed:NU
R493 330K
Not Placed
1200pF
R482 330K
0
Not Placed
0.1uF
Not_Placed:NU
Not Placed
R516
0.1uF
Not_Placed:NU
R515
C467
R481 100K
UHF
100k
3V_A
C463
R464
Not_Placed:NU
VHF
48 NC
47
46
45
44
43
42
41
40
39
38
37 NC
C462
C457
3V
Not Placed
0.1uF
25
26
27
28
29
30
31
32
33
34
35
36
SPI_CLK
R513
MICEXT
GNDRC
MICINT
VDDRC
TXSND
RXRTN
AUXTN
AUDIO
MOD
RXSND
GCB5
GCB4
PLCAP2
NC
VDDSYN
SYN
F1200
GNDDO
GNDD
VDDCP
VDDD
CLK168
GCB3
TXRTN
BW_SEL
1000pF
VR472
D471
3V
C454
5V_A
C453
C470
R460
24K
1
R472
680
C461
5V_B
Not_Placed:NU
2
UMG5
1
5V_B
C490
470pF
R498
U511
2
3
R488
330K
6
C495
UMG5
4
1
6
1uF
D491
47 K
8
7
6
5
C496
1uF
4
U480-2
NC
Not_Placed:NU
R499
270K
Not_Placed:NU
LM2904
Not_Placed:NU
R489
91K
Not_Placed:NU
2
3
4
R495
5.6K
C498
1uF
Figure 6-11. VHF (146-174 MHz) Audio Circuitry Schematic Diagram
HKLN4216A
November 24, 2003
6-14
146-174 MHz Schematic Diagrams, Overlays, and Parts Lists
DC Regulation
USWB+
POS
NEG
DATA
U310
TK71750S
VR301
MMBZ5250B
F301
J301
3A
C301
D301
NC
390pF
20V
C303
C304
33uF
.01uF
1 VIN
5
VOUT
3
CTRL
4
BYPASS
GND
2
C310
.01uF
5V
C311
C312
C313
.018uF
10uF
.01uF
Q311
5R
D3_3V
BATT_CHARGE
C314
VR302
MMBZ5250B
C302
C305
C306
390pF
100pF
.01uF
1200pF
NC
R313
10K
20V
R312
20K
R310
100K
Q313
C315
RX_ENA
1
1200pF
Q312
TP302
TX_ENA
5T
R311
100K
D3_3V
R506
100
1200pF
2
2
VOLUME
1
5
SWB+
6
R508
100K
3
1
R509
100K
RESET
TAB2
TAB1
LOW
R507
100
C316
Q493
S444
SWITCH
3 HIGH 4
C323
R322
100K
7
Q494
R510
1
LP2986
330K
ON_OFF
3
D3_3V
U320
6
2
150pF
NC
NC
4 INPUT OUTPUT 5
8 SHUTDOWN
3 SENSE ERROR 7
6
TAP FEEDBACK 2
GND
4
1
D3_3V
C320
.018uF
R320
330K
1%
C321
C322
10uF
.01uF
R321
200K
1%
U330
TK71730S
C331
1
VIN VOUT 5
3
CTRL
4
BYPASS
GND
2
3V
C334
C333
10uF
.01uF
.01uF
Figure 6-12. VHF (146-174 MHz) PCB 8486342Z13-C DC Regulation Schematic Diagram
November 24, 2003
HKLN4216A
VHF 146-174 MHz PCB 8486342Z13-C Schematic Diagrams, Overlays, and Parts Lists
J2
MAIN BOARD
CONNECTOR
J2-9
J2-16
J2-17
J2-10
J2-1
J2-2
J2-3
J2-4
J2-6
J2-13
J2-14
J2-15
J2-18
J2-19
J2-12
J2-21
J2-22
J2-23
J2-24
J2-25
J2-26
J2-27
J2-5
J2-7
J2-8
J2-2
J2-11
J2-20
9
16
17
10
1
2
3
4
6
13
14
15
18
19
12
21
22
23
24
25
26
27
5
7
8
8
11
20
6-15
J1
DISPLAY MODULE
CONNECTOR
KEYPAD
LEDBL
LEDBL
DATA
CLK
LCD_SEL
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
C1
150pF
C3
150pF
C6
150pF
C8
150pF
DNF
DNF
DNF
DNF
R1
100K
Vddd
R6
100K
Vddd
C2
C4
150pF
0.1uF
R7
R8
R9
R10
13K
22 K
43 K
130K
J2-29 G1
J2-30 G2
9
8
7
6
5
4
3
2
1
J1-9
J1-8
J1-7
J1-6
J1-5
J1-4
J1-3
J1-2
J1-1
LEDBL
GND
GND
GND
DATA
CLK
LCD_SEL
GND
VDDD
G1 J1-10 GND
G2 J1-11 GND
R2
13 K
S18
SWITCH
1
1
2
3
S17
SWITCH
2
1
2
3
S2 2
SWITCH
6
1
2
3
S2 3
SWITCH
5
1
2
3
S2 5
SWITCH
8
1
2
3
S26
SWITCH
9
1
2
3
S2 7
SWITCH
0
1
2
3
COL
ROW
NC
NC
REF
Vddd
Vddd
C5
C7
150pF
DNF
150pF
DNF
STD
LIMITED KEYPAD
C1
NOT PLACED
NOT PLACED
C3
NOT PLACED
NOT PLACED
C6
NOT PLACED
NOT PLACED
C8
NOT PLACED
NOT PLACED
R9
NOT PLACED
R10
NOT PLACED
R2
NOT PLACED
R3
NOT PLACED
R4
NOT PLACED
R5
NOT PLACED
C5
NOT PLACED
NOT PLACED
C7
NOT PLACED
NOT PLACED
S19
SWITCH
3
1
NC
2
3
1
2
3
S20
SWITCH
UP
R3
22 K
S24
SWITCH
4
1
R4
43K
R5
130K
S21
SWITCH
7
1
2
3
2
3
S28
SWITCH
1
2
3
*
LEDBL
D3
NOT PLACED
D4
NOT PLACED
D5
NOT PLACED
D6
NOT PLACED
D7
NOT PLACED
D8
NOT PLACED
R13
NOT PLACED
R14
NOT PLACED
R15
NOT PLACED
S2 9
SWITCH
#
1
2
3
NC
S3 0
SWITCH
DOW N
1
2
3
NC
S31
SWITCH
F1
1
2
3
QSMG-H799
D2
D10
NC
R11
470
D11
D3
QSMG-H799
QSMG-H799
QSMG-H799
S32
SWITCH
F2
1
2
3
D9
D1
QSMG-H799
D4
QSMG-H799
D5
QSMG-H799
D6
QSMG-H799
D7
QSMG-H799
D8
QSMG-H799
QSMG-H799
R12
470
R1 3
330
R14
330
R15
33 0
Figure 6-13. VHF (146-174 MHz) Keypad Board Schematic Diagram
HKLN4216A
November 24, 2003
6-16
146-174 MHz Schematic Diagrams, Overlays, and Parts Lists
D301
C478
4
J470
R469
C476
3
4
2
C473
L471
D470
C489
4
1
U480
5
8
R482
VR473
VR475
E452
R524
3
4
2
1
C
8
VR110
S440
C
C306
2
J301
2
R481
C482
R489
C301
VR302
3
R483
VR301
R496
4
C305
C112
C284
2
C91
C92
R212
R248
37
5
U110
C113
C7
J140
4
C1
M140
L3
C3
S442
C117
C2
S443
L1
L2
SH1
R26 C8
CR1
C9
C201
3
C6
C4
C5
L21
L4
C24
R25
L31
C22
C31
C23
Q21
R22
L22
C29
C30
C33 C32
C233
C230
R205
R221
R220
C219
L33
R24
C25
L32
C36
25
C231
C34
C216
C35
C241
SH201
U201
13
R223
C209
C205
Q171
S444
2
C480
R283
C217
C232
C214 C202
R63
C215
C212
R247
1
C208
C218
C283
C244
R245
R244
C213
C210
R417
C419
C413
R410
C418
R419
C412
C410
R431
C406
C432
C207
16
R400
C400
C433
R504
R230
5
R171
3
Y70
Q280 L281
L283
17
22
1
1
7
R243
U52
8
R61
C446
C204
C505
C69
C286 R286
1
U404
C409
L211
C408
C506
C503
C281
SH253
R281 R282
L251
C251
8
C507
C407
U403
C243
C245
SH401
C404
C504
4
5
C282
D251
C402
C403
F301
L253
3
5
J471
C302
R280
D261
2
C254
C255
R261
U402
21
8
32
Q403
FL53
L255
L254
C256
C268 SH250 C253
L262
L252
7
6
C488
2
D262 C257
R262
C263
4
5
R442
Q402
R445 R446 C500
C430 C431
C266 C265
L263
C422
R424
C267
L264
C264
C455
C421
R443
Q440
R425
C460
L265
13
FL54
R253
1
D424
D471
VR472
C461
R521
R471
R503
C303
U451
3
R254
C258
Q472
R472
R462
4
C470
R522
25
37
C269
R264
R263
VR471
C477
R514 R513
C513
C458
C454
R463
R414
C501
E500
R470
R473
R480
C465
S441
Figure 6-14. VHF (146-174 MHz) PCB 8486342Z13-C Board Component Side
November 24, 2003
HKLN4216A
VHF 146-174 MHz PCB 8486342Z13-C Schematic Diagrams, Overlays, and Parts Lists
6-17
R23
Q22
C99
R21
C26
C141
C132
C137
C134
C136
L131
C133
SH100
TP150
C110
L110
C116
D440
C102
2
4
L103
Q100
3
R105 C108
C106
C107
C105
C496
D491
R498
R508
Q493
R509
C481
R484
R485
Q482
Q490
Q481
VR474
C484
R495
C495
R494
2
R487
C483
R491
R486
R493
8
4
3
U490
5
U511
R490
1
R499
R497
3
4
4
C490
C498
R488
C479
R492
C499
J491
C316
L140
R111
R106
C314
R311
R310
3
4
Q313
C135
C474
C492
R474
Q311
C315
L101
R475
R255
R110
C101
R477
Q470
R476
R104
R479
Q312
R312
R313
L121
1
C104
3
C311
C313
4
5
TP404
R322
U320
R320
R506
FL52
4
U150
C153 C154
L102
C61
C334
U310
8
C320
C322
C323
R321
E453
R451
C457
C310
C312
C472
C103
C171
R103
1
R478
C475
C82
R82
L81
C115
C156
C159
3
R100 R102
C131
C124 C123
C155
C111
R158 C114
R107
C109
L100
Q170
6
R101 C100
R81
2
C333 C331
U330
C304
R272
C271 C273
C140
L132
D121
8
R156
4
3
R62
D51
R60
D52 C74
C170 C120
Y51
C64
R157
4
C65
2
C66
5
R153
C81
SH50
20
C172
C471
C451
C321
11
C63
C292
1
L270
R271
C274
R270 C270
Q150
R80
1
R67
R64
C40
C80
R57
C62
C42
L282
R273
SH251
L40
C151
R77
10
C67
C68
R66
C41
R91
L54
C150 R152
C60
R65
R155
R90
R76
R78
R40
R72
C43
L292
R284
10
C275
R274
C44
C285
L41
C290
L271
E451
R74
6
R75
T42
Q70
4
C73
C72
SH40
C70
R73
C466
C497
C71
3
TP1
TP200
TP240
C291
U251
20
C272
C452
L291
11
L276
R275
C463
TP2
R202
C277
C453
C456
R518
C518
C514
C416
C462
R464
TP403
8
R515
1
R276
C276
R516 R511
R246
C445
R460
5
C411
R517
C464
C519
R519
R512
C459
TP301
C512
4
C415
CR41
C203
D201
U51
C420
C511
U510
D414
R421
C401
C467
Q520
R520 Q471
R420
R418 R415
R523
R422
R423
C447
R505
3
4
R441
R440
28 30
29
29
C405
R412
C440 C441
C442
C443
C444
C414
76
51
R154
C158 R162
4
C211
C226
C225
R413 R430
SH400
J460
U401
L130
R120
C157
R151
C152
C90
C130
C58
C59
C228
C122
D120
C56
R150
R227
C227
L120
R121
R55
3
C121
R54
Q51
5
U151
C57
R53
C93
6
L53
SH52
R51
FL51
4
T41
Y202
2
SH200
2
3
4
6
C55
CR51
R52
L51
C223
C224
1
L52
Y201
26
C52 C53
C221
D221
32
31
R501
C51
2
R502
3
C222
D220
4
3
R433
C206 R206
C220
R411
Q410
TP302
R434
R432
TP405
TP401
TP402
C417 R416
C20
R20
R510
C493
R507
4
3
Q494
C494
Figure 6-15. VHF (146-174 MHz) Board Solder Side View
HKLN4216A
November 24, 2003
6-18
146-174 MHz Schematic Diagrams, Overlays, and Parts Lists
C2
C4
g1
J1
C3
C6
R11
D6
G2
9
R5
D1
D8
C1
J2
C8
R9
C7
1
28
g2
C5
D4
G1
D11
R10
R6
R1
R7
D9
R2
R8
D7
D5
D3
D10
R15
R14
D2
R13
R12
R4
R3
Component Side
Solder Side
Figure 6-16. VHF (146-174 MHz) PCB 8486342Z13-C Keypad Board
November 24, 2003
HKLN4216A
VHF 146-174 MHz PCB 8486342Z13-C Schematic Diagrams, Overlays, and Parts Lists
VHF (146-174 MHz) Radio Parts List
Circuit
Ref
C1
C2
C3
C4
C5
C6
C7
C8
C9
C20
C22
C23
C24
C25
C26
C29
C30
C31
C32
C33
C34
C35
C36
C40
C41
C42
C43
C44
C51
C52
C53
C55
C56
C57
C58
C59
C60
C61
C62
C63
C64
C65
C66
C67
C68
C69
C70
C71
C72
C73
Motorola
Part No.
2109445U41
2109445U46
2109445U49
2109445U37
2109445U14
2109445U37
2109445U45
2109445U44
Not_Placed
2113743L17
2113743L17
2113743L17
Not_Placed
2113743L17
2113743L17
2109445U48
2109445U42
2109445U44
2109445U51
2109445U42
2109445U51
2109445U43
2109445U42
2109445U40
2109445U37
2109445U46
2109445U37
2109445U40
2113743N48
2113743N28
2109445U26
2113743M24
2113743E20
2113743M24
2113743N16
2113743N12
2113743M24
2113743N46
2113743M24
2113743M24
2113743M24
2113743M24
2113743M24
2113743M24
2113743M24
2113743M24
2113743N53
2113743E20
2113743M24
2113743L33
HKLN4216A
Description
CAP, 22pF
CAP, 36pF
CAP, 47pF
CAP, 15pF
CAP, 3.0pF
CAP, 15pF
CAP, 33pF
CAP, 30pF
CAP, 4.7pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 6.2pF
CAP, 1000pF
CAP, 1000pF
CAP, 43pF
CAP, 24pF
CAP, 30pF
CAP, 56pF
CAP, 24pF
CAP, 56pF
CAP, 27pF
CAP, 24pF
CAP, 20pF
CAP, 15pF
CAP, 36pF
CAP, 15pF
CAP, 20pF
CAP, 82pF
CAP, 12pF
CAP, 9.1pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 3.9pF
CAP, 2.7pF
CAP, 0.1uF
CAP, 68pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 130pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 4700pF
Circuit
Ref
C74
C80
C81
C82
C90
C91
C92
C93
C99
C100
C101
C102
C103
C104
C105
C106
C107
C108
C109
C110
C111
C112
C113
C114
C115
C116
C117
C120
C121
C122
C123
C124
C130
C131
C132
C133
C134
C135
C136
C137
C140
C141
C150
C151
C152
C153
C154
C155
C156
C157
C158
Motorola
Part No.
2113743N42
2109445U41
2109445U45
2109445U41
2113743M24
2311049A57
2113743E20
Not_Placed
2113743M24
2113743L21
2113743L21
2113743M24
2113743L21
Not_Placed
Not_Placed
2113743L21
2113743N26
2113743M24
2113743M24
2113743M24
Not_Placed
2113743L21
2113743L21
2113743L21
2311049A07
2113743M24
2113741F25
2113743L21
2113743L21
2113740F31
2113740F31
2113743L21
2113740F29
2113740F15
2113740F37
2113740F15
2113740F37
2113740F17
2113740F30
2113740F58
2113740F30
2113740F33
2113743L21
2113743L21
2113743L21
2113743K18
2113743L21
2113743E20
2113743L41
2113743M24
2113743L21
6-19
Description
CAP, 47pF
CAP, 22pF
CAP, 33pF
CAP, 22pF
CAP, 0.1uF
CAPP, 10uF
CAP, 0.1uF
CAP, 3.6pF
CAP, 0.1uF
CAP, 1500pF
CAP, 1500pF
CAP, 0.1uF
CAP, 1500pF
CAP, 27pF
CAP, 10pF
CAP, 1500pF
CAP, 10pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 1500pF
CAP, 1500pF
CAP, 1500pF
CAP, 1500pF
CAPP, 1uF
CAP, 0.1uF
CAP, 1000pF
CAP, 1500pF
CAP, 1500pF
CAP, 15pF
CAP, 15pF
CAP, 1500pF
CAP, 12pF
CAP, 3.3pF
CAP, 27pF
CAP, 3.3pF
CAP, 27pF
CAP, 3.9pF
CAP, 13pF
CAP, 200pF
CAP, 13pF
CAP, 18pF
CAP, 1500pF
CAP, 1500pF
CAP, 1500pF
CAP, 0.47uF
CAP, 1500pF
CAP, 0.1uF
CAP, .01uF
CAP, 0.1uF
CAP, 1500pF
Circuit
Ref
C159
C170
C171
C172
C201
C202
C203
C204
C205
C206
C207
C208
C209
C210
C211
C212
C213
C214
C215
C216
C217
C218
C219
C220
C221
C222
C223
C224
C225
C226
C227
C228
C230
C231
C232
C233
C241
C243
C244
C245
C251
C253
C254
C255
C256
C257
C258
C263
C264
C265
C266
Motorola
Part No.
2113743L21
2113743L21
2113743N12
2113743L21
2113740F59
2109445U52
2109445U13
2113743L09
Not_Placed
Not_Placed
2113743L09
2113743L09
2113743L09
2113743L09
2113743E20
2113743F18
2113743L41
2113743L17
2113743F18
2113743E20
2113743L17
2113743F18
2113743E20
2113743N34
2113743L41
2113743L41
2113743L41
2113743L41
2311049A57
2311049A57
2113743L17
2113743E20
2113743F18
2113743L17
2113743E20
2311049A56
2113743L19
2113741M69
2113741F27
2311049A08
2113741F49
2109445U38
2109445U15
2109445U39
2109445U27
2109445U46
2113743L19
2109445U43
2109445U19
2109445U37
2109445U27
Description
CAP, 1500pF
CAP, 1500pF
CAP, 2.7pF
CAP, 1500pF
CAP, 220pF
CAP, 62pF
CAP, 2.7pF
CAP, 470pF
CAP, 2.7pF
CAP, 1000pF
CAP, 470pF
CAP, 470pF
CAP, 470pF
CAP, 470pF
CAP, 0.1uF
CAP, 2.2uF
CAP, .01uF
CAP, 1000pF
CAP, 2.2uF
CAP, 0.1uF
CAP, 1000pF
CAP, 2.2uF
CAP, 0.1uF
CAP, 22pF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAPP, 10uF
CAPP, 10uF
CAP, 1000pF
CAP, 0.1uF
CAP, 2.2uF
CAP, 1000pF
CAP, 0.1uF
CAPP, 4.7uF
CAP, 1200pF
CAP, 0.1uF
CAP, 1200pF
CAPP, 1uF
CAP, .01uF
CAP, 16pF
CAP, 3.3pF
CAP, 18pF
CAP, 10pF
CAP, 36pF
CAP, 1200pF
CAP, 27pF
CAP, 4.7pF
CAP, 15pF
CAP, 10pF
Circuit
Ref
C267
C268
C269
C270
C271
C272
C273
C274
C275
C276
C277
C281
C282
C283
C284
C285
C286
C290
C291
C292
C301
C302
C303
C304
C305
C306
C310
C311
C312
C313
C314
C315
C316
C320
C321
C322
C323
C331
C333
C334
C400
C401
C402
C403
C404
C405
C406
C407
C408
C409
C410
Motorola
Part No.
2109445U46
2109445U13
2113743L21
2113743L19
2113743L41
2113743E20
2113743L41
2113743E20
2113743L19
2113743N19
2113743L19
2113743L19
2113743N25
2113743L19
2113743L19
2113743E20
2113743N27
2113743N43
2113743N39
2113743L19
2113743L07
2113743L07
2311049A97
2113743L41
2113743N50
2113741F49
2113743L41
2113743E05
2311049A57
2113743L41
2113743L19
2113743L19
2113743L19
2113743E05
2311049A57
2113743L41
2113743N54
2113743L41
2113743L41
2311049A57
Not_Placed
2113743M24
2113743L17
2113743L17
2113743L17
2113743L17
2113743L17
2113743L17
2113743L17
2113743L17
2311049A57
Description
CAP, 36pF
CAP, 2.7pF
CAP, 1500pF
CAP, 1200pF
CAP, .01uF
CAP, 0.1uF
CAP, .01uF
CAP, 0.1uF
CAP, 1200pF
CAP, 5.1pF
CAP, 1200pF
CAP, 1200pF
CAP, 9.1pF
CAP, 1200pF
CAP, 1200pF
CAP, 0.1uF
CAP, 11pF
CAP, 51pF
CAP, 36pF
CAP, 1200pF
CAP, 390pF
CAP, 390pF
CAPP, 33uF
CAP, .01uF
CAP, 100pF
CAP, .01uF
CAP, .01uF
CAP, .018uF
CAPP, 10uF
CAP, .01uF
CAP, 1200pF
CAP, 1200pF
CAP, 1200pF
CAP, .018uF
CAPP, 10uF
CAP, .01uF
CAP, 150pF
CAP, .01uF
CAP, .01uF
CAPP, 10uF
CAP, .022uF
CAP, 0.1uF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAPP, 10uF
November 24, 2003
6-20
Circuit
Ref
C411
C412
C413
C414
C415
C416
C417
C418
C419
C420
C421
C422
C430
C431
C432
C433
C440
C441
C442
C443
C444
C445
C446
C447
C451
C452
C453
C454
C455
C456
C457
C458
C459
C460
C461
C462
C463
C464
C465
C466
C467
C470
C471
C472
C473
C474
C475
C476
C477
C478
C479
VHF 146-174 MHz PCB 8486342Z13-C Schematic Diagrams, Overlays, and Parts Lists
Motorola
Part No.
2113743M24
2113743L17
2113743M24
2113743M24
2113743L17
2113743L17
2113743L17
2113743M24
2113743L17
2113743L41
2113743L41
2113743L41
2113743M24
2113743L17
2113743M24
2113743L17
2113743L41
2113743L41
2113743L41
2113743L41
2113743L41
2113743L41
2113743L41
2113743M24
2113743M24
2113743E20
2113743E20
2113743E20
2113743L48
2113743E20
2113743E20
2113743E20
2113743E20
2113743E20
2113743L17
2113743E20
2113743E20
2113743E20
2113743L17
Not_Placed
2113743L19
2113743E20
2113743F18
2113743E20
2113743N54
2113743N54
2113743L48
2113743L48
2113743M24
2113743N54
2113743N54
November 24, 2003
Description
CAP, 0.1uF
CAP, 1000pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 0.1uF
CAP, 1000pF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, 0.1uF
CAP, 1000pF
CAP, 0.1uF
CAP, 1000pF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, .022uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 1000pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 1000pF
CAP, 470pF
CAP, 1200pF
CAP, 0.1uF
CAP, 2.2uF
CAP, 0.1uF
CAP, 150pF
CAP, 150pF
CAP, .022uF
CAP, .022uF
CAP, 0.1uF
CAP, 150pF
CAP, 150pF
Circuit
Ref
C480
C481
C482
C483
C484
C488
C489
C490
C492
C493
C494
C495
C496
C497
C498
C499
C500
C501
C503
C504
C505
C506
C507
C511
C512
C513
C514
C518
C519
CR1
CR41
CR51
D51
D52
D120
D121
D201
D220
D221
D251
D261
D262
D301
D414
D440
D470
D471
D491
E451
E452
E453
Motorola
Part No.
2113743E20
Not_Placed
2113743L41
2113743E20
Not_Placed
2113743L09
2113743L09
2113743L09
2113743F18
2113743L17
2113743F18
2113743F16
2113743F16
2113743E20
2113743F16
2113743N48
2113743L17
2113743F16
2113743L17
2113743L17
2113743L17
2113743L17
2113743L17
2113740F59
2113743N22
2113740F59
2113743N31
2113743E20
2113743F16
4813825A19
4802246J04
4813825A19
4802245J97
4802245J97
4880973Z02
4880973Z02
4862824C03
4802233J09
4802233J09
4805649Q13
4805649Q13
4862824C01
4813833A19
4805129M41
4805729G49
4809924D18
4809924D18
4805129M41
2480640Z01
2480640Z01
2480640Z01
Description
CAP, 0.1uF
CAP, .01uF
CAP, .01uF
CAP, 0.1uF
CAP, .033uF
CAP, 470pF
CAP, 470pF
CAP, 470pF
CAP, 2.2uF
CAP, 1000pF
CAP, 2.2uF
CAP, 1uF
CAP, 1uF
CAP, 0.1uF
CAP, 1uF
CAP, 82pF
CAP, 1000pF
CAP, 1uF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 220pF
CAP, 6.8pF
CAP, 220pF
CAP, 16pF
CAP, 0.1uF
CAP, 1uF
MMBD352
HSMS2829
MMBD352
DAN235ETL
DAN235ETL
MA4PH261
MA4PH261
1SV232
IMN10
IMN10
1SV228
1SV228
1SV229
MBRM120ET3
MMBD501
BRPY1204W
RB520S-30
RB520S-30
MMBD501
BK1005HM471
BK1005HM471
BK1005HM471
Circuit
Ref
E500
F301
FL51
FL52
FL53
FL54
J140
J301
J460
J470
J471
J491
L1
L2
L3
L4
L21
L22
L31
L32
L33
L40
L41
L51
L52
L53
L54
L81
L100
L101
L102
L103
L110
L120
L121
L130
L131
L132
L140
L211
L251
L252
L253
L254
L255
L262
L263
L264
L265
L270
L271
Motorola
Part No.
2480640Z01
6580542Z01
9180022M11
9180468V05
9180469V05
9180469V03
0986428Z01
0986237A02
Not_Placed
0985818A01
0980683Z03
2809926G01
2413923C09
2413923C09
2413923C09
2413923C09
Not_Placed
2413926N24
2413923C09
2413923C09
2413923C09
2413923C09
2413923C09
2413926N26
2462587V44
2113743N52
2413923A25
2462587N68
2413926K32
2413926K32
2409377M17
2409377M31
2413926K32
2413926K32
2462587N49
2479990N01
2479990N01
2479990N01
2479990M01
2413926K32
2413926K32
2413926K32
2409377M17
2413923C05
2413926K29
2413926K32
2409377M17
2413923C07
2413926K29
2413926K32
Not_Placed
Description
BK1005HM471
FUSE
MXF45
FLTR
CFWC455E
CFWC455G
CONN_J
CONN_J
CONN_J
CONN_J
CONN_J
CONN_P
IDCTR, 68nH
IDCTR, 68nH
IDCTR, 68nH
IDCTR, 68nH
IDCTR, 39nH
IDCTR, 100nH
IDCTR, 68nH
IDCTR, 68nH
IDCTR, 68nH
IDCTR, 68nH
IDCTR, 68nH
IDCTR, 150nH
IDCTR, 680nH
CAP, 120pF
IDCTR, 1.2uH
IDCTR, 1uH
IDCTR, 560nH
IDCTR, 560nH
IDCTR, 100nH
IDCTR, 30nH
IDCTR, 560nH
IDCTR, 560nH
IDCTR, 47nH
IDCTR, 43.67nH
IDCTR, 43.67nH
IDCTR, 43.67nH
IDCTR, 30.54nH
IDCTR, 560nH
IDCTR, 560nH
IDCTR, 560nH
IDCTR, 100nH
IDCTR, 33nH
IDCTR, 330nH
IDCTR, 560nH
IDCTR, 100nH
IDCTR, 47nH
IDCTR, 330nH
IDCTR, 560nH
IDCTR, 560nH
Circuit
Ref
L276
L281
L282
L283
L291
L292
L471
M140
Q21
Q22
Q51
Q70
Q100
Q150
Q170
Q171
Q280
Q311
Q312
Q313
Q402
Q403
Q410
Q440
Q470
Q471
Q472
Q481
Q482
Q490
Q493
Q494
Q520
R20
R21
R22
R23
R24
R25
R26
R40
R51
R52
R53
R54
R55
R57
R60
R61
R62
R63
Motorola
Part No.
2413926N24
2413926N22
2413926N20
Not_Placed
2413926N17
2413926N22
2413926K30
0286427Z01
4802245J95
4805723X02
4802197J95
4880214G02
4802245J95
4880214G02
4809939C34
4880048M01
4802245J95
4809579E18
4809579E18
4802245J54
4880048M01
4813824A17
4802245J54
5180159R01
4805723X02
4802245J54
4805723X02
Not_Placed
4813824A10
4802245J54
4809579E18
4802245J54
4813824A10
0662057U97
0662057M54
0662057M94
0662057V11
0662057M71
0662057M92
0662057M01
0662057M74
0662057M43
0662057N01
0662057N11
0662057M91
0662057M62
0662057M90
0662057M83
0662057N23
0662057M86
0662057N13
Description
IDCTR, 100nH
IDCTR, 68nH
IDCTR, 47nH
IDCTR, 270nH
IDCTR, 27nH
IDCTR, 68nH
IDCTR, 390nH
ANTENNA_NUT
BFS540
UMT1
PBR941
MMBT3904
BFS540
MMBT3904
EMB10
DTC144EKA
BFS540
TP0101T
TP0101T
UMG5
DTC144EKA
MMBT3906
UMG5
IMX1
UMT1
UMG5
UMT1
MMBT3906
MMBT3904
UMG5
TP0101T
UMG5
MMBT3904
RES, 6.8K
RES, 150
RES, 6.8K
RES, 22K
RES, 750
RES, 5.6K
RES, 0
RES, 1K
RES, 51
RES, 12K
RES, 33K
RES, 5.1K
RES, 330
RES, 4.7K
RES, 2.4K
RES, 100K
RES, 3.3K
RES, 39K
HKLN4216A
VHF 146-174 MHz PCB 8486342Z13-C Schematic Diagrams, Overlays, and Parts Lists
Circuit
Ref
R64
R65
R66
R67
R72
R73
R74
R75
R76
R77
R78
R80
R81
R82
R90
R91
R100
R101
R102
R103
R104
R105
R106
R107
R110
R111
R120
R121
R150
R151
R152
R153
R154
R155
R156
R157
R158
R162
R202
R205
R206
R212
R220
R221
R223
R227
R230
R243
R244
R245
R246
Motorola
Part No.
0662057N06
0662057N13
0662057N06
0662057N06
0662057M64
0662057M80
0662057M76
0662057N01
0662057V04
0662057U99
0662057M70
0662057M91
0662057M74
Not_Placed
0662057M43
0662057M79
0662057M61
0662057M32
0662057M61
0662057M86
0662057A18
0662057M76
0662057M90
0662057M54
0662057M63
Not_Placed
0662057C55
0662057C55
0680539Z01
0662057A09
0662057V27
0662057V27
0662057V27
0662057V27
0662057M62
0662057M92
0662057M78
0662057M98
0662057N27
0662057M50
Not_Placed
0662057C01
0662057M54
0662057M54
0662057M50
0662057N27
0662057N30
0662057M81
0662057M43
0662057M78
0662057N23
HKLN4216A
Description
RES, 20K
RES, 39K
RES, 20K
RES, 20K
RES, 390
RES, 1.8K
RES, 1.2K
RES, 12K
RES, 12K
RES, 8.2K
RES, 680
RES, 5.1K
RES, 1K
RES, 0
RES, 51
RES, 1.6K
RES, 300
RES, 18
RES, 300
RES, 3.3K
RES, 51
RES, 1.2K
RES, 4.7K
RES, 150
RES, 360
RES, 2.7K
RES, 150
RES, 150
RES, 0.1
RES, 22
RES, 100K
RES, 100K
RES, 100K
RES, 100K
RES, 330
RES, 5.6K
RES, 1.5K
RES, 10K
RES, 150K
RES, 100
RES, 100
RES, 0
RES, 150
RES, 150
RES, 100
RES, 150K
RES, 200K
RES, 2K
RES, 51
RES, 1.5K
RES, 100K
Circuit
Ref
R247
R248
R253
R254
R255
R261
R262
R263
R264
R270
R271
R272
R273
R274
R275
R276
R280
R281
R282
R283
R284
R286
R310
R311
R312
R313
R320
R321
R322
R400
R410
R411
R412
R413
R414
R415
R416
R417
R418
R419
R420
R421
R422
R423
R424
R425
R430
R431
R432
R433
R434
Motorola
Part No.
0662057N33
0662057M43
0662057M42
0662057M58
0662057U91
0662057N16
0662057M94
0662057M37
0662057M58
0662057M32
0662057M96
0662057M97
0662057M61
0662057M38
0662057M01
0662057M74
0662057M94
0662057M97
0662057M71
0662057M56
0662057M62
0662057M01
0662057N23
0662057N23
0662057N06
0662057N06
0662057V43
0662057V35
0662057N23
Not_Placed
0662057M98
0662057M72
0662057N23
0662057N23
0662057N11
0662057N11
0662057N06
0662057M98
0662057N23
0662057M90
0662057V35
0662057V27
0662057N23
0662057N23
0662057V35
0662057V27
0662057N23
Not_Placed
0662057M01
0662057N23
Not_Placed
6-21
Description
RES, 270K
RES, 51
RES, 47
RES, 220
RES, 3.9K
RES, 51K
RES, 6.8K
RES, 30
RES, 220
RES, 18
RES, 8.2K
RES, 9.1K
RES, 300
RES, 33
RES, 0
RES, 1K
RES, 6.8K
RES, 9.1K
RES, 750
RES, 180
RES, 330
RES, 0
RES, 100K
RES, 100K
RES, 20K
RES, 20K
RES, 330K
RES, 200K
RES, 100K
RES, 100K
RES, 10K
RES, 820
RES, 100K
RES, 100K
RES, 33K
RES, 33K
RES, 20K
RES, 10K
RES, 100K
RES, 4.7K
RES, 200K
RES, 100K
RES, 100K
RES, 100K
RES, 200K
RES, 100K
RES, 100K
RES, 100K
RES, 0
RES, 100K
RES, 100K
Circuit
Ref
R440
R441
R442
R443
R445
R446
R451
R460
R462
R463
R464
R469
R470
R471
R472
R473
R474
R475
R476
R477
R478
R479
R480
R481
R482
R483
R484
R485
R486
R487
R488
R489
R490
R491
R492
R493
R494
R495
R496
R497
R498
R499
R501
R502
R503
R504
R505
R506
R507
R508
R509
Motorola
Part No.
0662057M90
0662057M90
0662057A33
0662057A27
0662057M90
0662057M98
0662057N15
0662057N08
0662057N08
0662057N08
0662057N10
0662057M26
0662057M82
0662057M82
0662057M70
0662057M70
0662057A37
0662057N29
0662057N23
0662057M82
0662057M82
0662057N23
0662057B47
0662057N23
0662057N35
0662057N27
Not_Placed
0662057N23
0662057N23
0662057M01
0662057N35
0662057A96
Not_Placed
0662057M01
0662057N08
0662057N35
0662057V43
0662057M92
Not_Placed
0662057N47
0662057N15
0662057N33
0662057M50
0662057M50
0662057M50
0662057M50
0662057M50
0662057M50
0662057M50
0662057N23
0662057N23
Description
RES, 4.7K
RES, 4.7K
RES, 220
RES, 120
RES, 4.7K
RES, 10K
RES, 47K
RES, 24K
RES, 24K
RES, 24K
RES, 30K
RES, 10
RES, 2.2K
RES, 2.2K
RES, 680
RES, 680
RES, 330
RES, 180K
RES, 100K
RES, 2.2K
RES, 2.2K
RES, 100K
RES, 0
RES, 100K
RES, 330K
RES, 150K
RES, 2.2K
RES, 100K
RES, 100K
RES, 0
RES, 330K
RES, 91K
RES, 2.2K
RES, 0
RES, 24K
RES, 330K
RES, 330K
RES, 5.6K
RES, 10K
RES, 1MEG
RES, 47K
RES, 270K
RES, 100
RES, 100
RES, 100
RES, 100
RES, 100
RES, 100
RES, 100
RES, 100K
RES, 100K
Circuit
Ref
R510
R511
R512
R513
R514
R515
R516
R517
R518
R519
R520
R521
S440
S441
S442
S443
S444
SH1
SH40
SH50
SH52
SH100
SH200
SH201
SH250
SH251
SH253
SH400
SH401
T41
T42
U51
U52
U110
U150
U151
U201
U251
U310
U320
U330
U401
U402*
U403
U404*
U451
U480
U490
U510
U511
VR110
Motorola
Part No.
0662057N35
0662057N23
0662057N27
Not_Placed
0662057N23
Not_Placed
Not_Placed
0662057M01
0662057N31
0662057N23
0662057N23
0662057N23
4080710Z06
4070354A01
4070354A01
4070354A01
1880619Z02
2686421Z01
2686419Z01
2686423Z01
2686424Z01
2686418Z01
2686424Z01
2686423Z01
2686425Z01
2686425Z01
2686422Z01
2686420Z01
2686420Z01
2580541Z02
2580541Z02
5186144B01
5109522E10
0186438Z01
5113818A01
2484657R01
5185963A27
5105750U54
5102478J01
5185963A55
5102479J01
5102226J56
5102463J64
Not_Placed
5102480J01
5185130C53
5113818A01
5108858K99
5113818A01
4802245J54
4813830A82
Description
RES, 330K
RES, 100K
RES, 150K
RES, 100K
RES, 100K
RES, 0
RES, 0
RES, 0
RES, 220K
RES, 100K
RES, 100K
RES, 100K
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
XFMR
XFMR
SA616
TC7W04F
RA07M1317M_VHF
LM2904
57R01
63A27
50U54
TK71750S
LP2986
TK71730S
MC68HC11FL0
X25128-2.7
SRM2B256
AT49LV001N_70VI
30C53
LM2904
TDA8541
LM2904
UMG5
MM3Z4V3T1
November 24, 2003
6-22
VHF 146-174 MHz PCB 8486342Z13-C Schematic Diagrams, Overlays, and Parts Lists
Circuit
Ref
VR301
VR302
VR471
VR472
VR473
VR474
VR475
Y51
Y70
Y201*
Y202
Motorola
Part No.
Description
4813830A33 MMBZ5250B
4813830A33 MMBZ5250B
4813830A18 MMBZ5235B
4813830A09 MMBZ5226B
4813830A33 MMBZ5250B
4813830A33 MMBZ5250B
4880140L20
MMBZ5245B
4802245J84
TSS2_44_395
9186145B02 45B02
4880114R06 14R06
Not_Placed
45J68
* Motorola Depot Servicing only
Circuit
Ref
R11
R12
R13
R14
R15
Motorola
Part No.
0662057A41
0662057A41
NOTPLACED
NOTPLACED
NOTPLACED
Description
RES, 470
RES, 470
RES, 330
RES, 330
RES, 330
VHF (146-174 MHz) Keypad Board Parts List
Circuit
Ref
C1
C2
C3
C4
C5
C6
C7
C8
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
J1
J2
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
Motorola
Part No.
NOTPLACED
2113740F55
NOTPLACED
2113743E20
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
4809496B11
4809496B11
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
4809496B11
4809496B11
4809496B11
09_54548_091
1_9pin
09_52892_289
0_28PIN
0662057A97
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
0662057A97
0662057A76
0662057A81
NOTPLACED
NOTPLACED
November 24, 2003
Description
CAP, 150pF
CAP, 150pF
CAP, 150pF
CAP, 0.1uF
CAP, 150pF
CAP, 150pF
CAP, 150pF
CAP, 150pF
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
CONN_J
CONN_J
RES, 100K
RES, 13K
RES, 22K
RES, 43K
RES, 130K
RES, 100K
RES, 13K
RES, 22K
RES, 43K
RES, 130K
HKLN4216A
Chapter 7 403-440 MHz UHF Theory Of Operation
7.1
Introduction
This chapter provides a detailed theory of operation for the radio components. Schematic diagrams
for the circuits described in the following paragraphs are located in Chapter 11of this manual.
7.2
UHF Receiver
The UHF receiver covers the range of 403-440 MHz and provides switchable IF bandwidth for use
with 20/25/30 kHz or 12.5 kHz channel spacing systems. The receiver is divided into two major
blocks, as shown in Figure 7-1.
• Front End
• Back End
Preselector
Filter
RF
Amp
Interstage
1st Mixer
Filter
Crystal
Filter
IF
Amp
RX from
Antenna Switch
Inj Filter
First LO
from Synthesizer
BW_SEL
6G
Ceramic
Resonator
Recovered Audio
6E
Switching
Cer Fltr
4E
Demodulator
RSSI
Figure 7-1. UHF Receiver Block Diagram
7.2.1
Receiver Front End
Incoming RF signals from the antenna are first routed through the harmonic filter and antenna switch,
part of the transmitter circuitry, before being applied to the receiver front end. The receiver front end
consists of a preselector filter, RF amplifier, an interstage filter, and a double-balanced first mixer.
The preselector filter is a fixed-tuned 3-pole Butterworth design using discrete elements (L1-L3, C1C10, C12 and C523) in a shunt-resonator configuration. It has a 3 dB bandwidth of 68 MHz centered
at 421 MHz, an insertion loss of 2.2 dB and image attenuation of 38 dB at 350 MHz. Diode CR1
protects the RF amplifier by limiting excessive RF levels. The filter bandwidth is considerably wider
than the receive band, to achieve low insertion loss in a compact size. C523 provides a transmissionzero to improve image attenuation.
The output of the filter is matched to the base of RF amplifier Q21, which provides 18 dB of gain and
a noise figure of 4 dB. A BFS505 device is used for high gain, low noise figure and reduced operating
current. Operating voltage is obtained from the 5R source, which is turned off during transmit to
reduce dissipation in Q21. Current mirror Q22 maintains the operating current of Q21 constant at 8
mA regardless of device and temperature variations, for optimum dynamic range and noise figure.
7-2
403-440 MHz UHF Theory Of Operation: UHF Receiver
The output of the RF amplifier is applied to the interstage filter, a fixed-tuned 4-pole Butterworth
shunt-coupled resonator design having a 3 dB bandwidth of 68 MHz centered at 462 MHz, and
insertion loss of 3.5 dB. This filter yields an image rejection of 58 dB at 350 MHz, assisted by a
transmission-zero at 300 MHz implemented by C524 for the reasons mentioned above.
The output of the interstage filter is connected to the passive double-balanced mixer consisting of
components T41, T42, and CR41. This mixer has a conversion loss of 7.2 dB. Low-side injection from
the frequency synthesizer is filtered by L40-L41 and C41-C45 to remove second harmonic energy
that may degrade half-IF spurious rejection performance. The injection filter has a 3 dB bandwidth of
100 MHz centered at 376.15 MHz, and an insertion loss of 2.7 dB. The second-harmonic rejection is
typically 45 dB or greater. The filtered injection signal is applied to T42 at a level of +6 dBm.
The mixer output is applied to a diplexer network (L51-L52, C51, R51) which matches the 44.85 MHz
IF signal to crystal filter FL51, and terminates the mixer into 50Ω at all other frequencies.
7.2.2
Receiver Back End
The receiver back end is a dual conversion design. High IF selectivity is provided by FL51, a 4-pole
fundamental mode 44.85 MHz crystal filter with a minimum 3 dB bandwidth of ±6.7 kHz, a maximum
20 dB bandwidth of + 12.5 kHz, and a maximum insertion loss of 3.5 dB. The output is matched to IF
amplifier stage Q51 by L53 and C93. Q51 provides 16 dB of gain and a noise figure of 1.8 dB. The dc
operating current is 1 mA. The output of Q51 is applied to the input of the receiver IFIC U51. Diode
CR51 limits the maximum RF level applied to the IFIC.
The IFIC is a low-voltage monolithic FM IF system incorporating a mixer/oscillator, two limiting IF
amplifiers, quadrature detector, logarithmic received signal strength indicator (RSSI), voltage
regulator and audio and RSSI op amps. The second LO frequency, 44.395 MHz, is determined by
Y51. The second mixer converts the 44.85 MHz high IF frequency to 455 kHz.
Additional IF selectivity is provided by two ceramic filters, FL52 (between the second mixer and IF
amp) and FL53 or FL54 (between the IF amp and the limiter input). The wider filter FL53 is used for
20/25 kHz channel spacing, and the narrower filter FL54 is used for 12.5 kHz channels. When the
BW_SEL line is high, the two upper diodes in packages D51 and D52 are forward biased, selecting
FL53 for 20/25 kHz channels. When the BW_SEL line is low, the two lower diodes in packages D51
and D52 are forward biased, selecting FL54 for 12.5 kHz channels.
The ceramic filters have the following specifications:
FL52
FL53
FL54
Number of Elements:
4
6
6
Insertion Loss:
4 dB
4 dB
4 dB
6 dB Bandwidth:
15 kHz
15 kHz
9 kHz
50 dB Bandwidth:
30 kHz
30 kHz
22 kHz
Stopband Rejection:
27 dB
47 dB
47 dB
Ceramic resonator Y70 provides phase vs. frequency characteristic required by the quadrature
detector, with 90 degree phase shift occurring at 455 kHz. Buffer Q70 provides a lower driving
impedance from the limiter to the resonator, improving the IF waveform and lowering the distortion of
the recovered audio signal. The recovered audio level at the DEMOD output is 120 mV rms (25 kHz
channel, 3 kHz deviation) or 60 mV rms (12.5 kHz channel, 1.5 kHz deviation). An additional RSSI
output provides a DC voltage level that is proportional to RF signal level. This voltage is measured by
an A/D converter contained in the microprocessor (PE4_AN4, U401 pin 63).
November 24, 2003
HKLN4216A
403-440 MHz UHF Theory Of Operation: UHF Transmitter
7.3
7-3
UHF Transmitter
The UHF transmitter covers the range of 403-440 MHz. Depending on model, the output power of the
transmitter is either switchable on a per-channel basis between high power (4 watts) and low power
(1 watt), or is factory preset to 2 watts. The transmitter is divided into four major blocks as shown in
Figure 7-2.
•
•
•
•
Power Amplifier
Harmonic Filter
Antenna Matching Network
Power Control.
USWB+
TX_ENA
Power Control
PWR_SET
VGG
VDD
5T
TX_INJ
(From VCO)
Q100
Power Amplifier Module U110
RX_IN
(To Receiver)
Harmonic Filter
Antenna
Switch
J140 Antenna
Jack
Antenna
Antenna
Matching
Network
Figure 7-2. UHF Transmitter Block Diagram
7.3.1
Transmitter Power Amplifier
The transmitter power amplifier has three stages of amplification. The first stage, Q100, operates in
Class A from the 5T source. It provides 17 dB of gain and an output of 50 mW. The current drain is
typically 35mA. Components C105, C107 and L103 match the output of Q100 to the 50Ω input of the
module U110.
U110 is a two stage Silicon MOS FET power amplifier module. Drain voltage is obtained from UNSW
B+ after being routed through current-sense resistor R150 in the power control circuit. The output
power of the module is controlled by varying the DC gate bias on U110 pin 2 (VGG).
7.3.2
Antenna Switch
The antenna switch consists of two pin diodes, D120 and D121. In the receive mode, both diodes are
off. Signals applied at the antenna or at jack J140 are routed, via the harmonic filter, through network
C122-C124 and L121, to the receiver input. In the transmit mode, Q170 is on and TXB+ is present,
forward-biasing both diodes into conduction. The diode current is 20 mA, set by R120-R121. The
transmitter RF from U110 is routed through D120, and via the harmonic filter to the antenna jack.
D121 conducts, shunting RF power and preventing it from reaching the receiver. L121 is selected to
appear as a 1/4 wave at UHF, so that the low impedance of D121 appears as a high impedance at the
junction of D120 and the harmonic filter input. This provides a high series impedance and low shunt
impedance divider between the power amplifier output and receiver input.
7.3.3
Harmonic Filter
The harmonic filter consists of components C122 (Range 1 UHF) C136 and L130-L132. The
harmonic filter is a seven-pole Chebychev low-pass configuration, optimized for low insertion loss,
with a 3 dB frequency of approximately 600 MHz and typically less than 0.8 dB insertion loss in the
passband.
HKLN4216A
November 24, 2003
7-4
7.3.4
403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry
Antenna Matching Network
The harmonic filter presents a 50Ω impedance to antenna jack J140. A matching network, made up of
C140-C141 and L140, is used to match the antenna impedance to the harmonic filter. This optimizes
the performance of the transmitter and receiver into the impedance presented by the antenna,
significantly improving the antenna's efficiency.
7.3.5
Power Control
The power control circuit is a dc-coupled amplifier whose output is the dc gate bias voltage (VGG)
applied to the two stages of the RF power amplifier U110.
The output power of the transmitter is adjusted by varying the setting of the power-set DAC contained
in the ASFICcmp IC (DACG, U451 pin 6). This PWR_SET voltage is applied to U150 pin 3.
Stage U150-2 compares the voltage drop across current sense resistor R150 to the voltage drop
across resistor R151 caused by current flow through Q150, and adjusts its output (pin 7) to maintain
equal voltages at pins 5 and 6. Thus the current flow through Q150, and hence its emitter voltage, is
proportional to the current drawn by stage U110, which is in turn proportional to the transmitter output
power. The emitter voltage of Q150 is applied to U150 pin 2, where it is compared to the power set
voltage PWR_SET at pin 3.
The output of U150 pin 1 is divided by R110 and R111 and applied as a gate voltage to the power
amplifier U110. By varying this gate voltage as needed to keep the voltages at U150 pins 2 and 3
equal, power is maintained at the desired setting. Excessive final current, for example due to antenna
mismatch, causes a lowering of the voltage at U150 pin 6, an increased voltage at pin 2, and a
lowering of the voltage at pin 1 and of the gate voltage VGG. This prevents damage to the final stage
due to excessive current.
7.4
UHF Frequency Generation Circuitry
The frequency generation system, shown in Figure 7-3, is composed of two circuit blocks, the
Fractional-N synthesizer IC U201, the VCO/Buffer IC U251, and associated circuitry. Figure 7-4
shows the peripheral interconnect and support circuitry used in the synthesizer block, and Figure 7-5
details the internal circuitry of the VCOBIC and its interconnections to the surrounding components.
Refer to the schematic to identify reference designators.
The Fractional-N synthesizer is powered by regulated 5 V and 3 V provided by U310 and U330
respectively. 5 V is applied to U201 pins 13 and 30, and 3 V is applied to pins 5, 20, 34 and 36. The
synthesizer in turn generates a super-filtered 4.5 V supply (VSF, from pin 28) to power U251. In
addition to the VCO, the synthesizer also interfaces with the logic and ASFICcmp circuits.
Programming for the synthesizer is accomplished through the microprocessor SPI_DATA_OUT,
November 24, 2003
HKLN4216A
403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry
7-5
SPI_CLK, and SYNTH_CS (chip select) lines (U409 pins 100, 1 and 47 respectively). A logic high (3
V) from U201 pin 4 indicates to the microprocessor that the synthesizer is locked.
Voltage
Multiplier
TRB
VCP
Vmult1
Rx VCO
Circuit
Aux3
Synthesizer
U201
Vmult2
16.8 MHz
Ref. Osc.
Buffer
Q280
Rx Out
VCOBIC
U251
Loop
Filter
MOD Out
Modulating
Signal
To Mixer
Tx Out
To PA Driver
Tx VCO
Circuit
Figure 7-3. UHF Frequency Generation Unit Block Diagram
Transmit modulation from the ASFICcmp (U451 pin 40) is applied to U201 pin 10 (MOD_IN). An
electronic attenuator in the ASFICcmp adjusts overall transmitter deviation by varying the audio level
applied to the synthesizer IC. Internally the audio is digitized by the Fractional-N synthesizer and
applied to the loop divider to provide the low-port modulation. The audio is also routed through an
internal attenuator for the purpose of balancing the low port and high port modulation and reducing
the deviation by 6 dB for 12.5 kHz channels, and is available at U201 pin 41 (VCO_MOD). This audio
signal is routed to the VCO's modulator.
7.4.1
Fractional-N Synthesizer
The Fractional-N synthesizer, shown in Figure 7-4, uses a 16.8 MHz crystal (Y201) to provide the
reference frequency for the system. External components C201-C203, R202 and D201 are also part
of the temperature-compensated oscillator circuit. The dc voltage applied to varactor D201 from U201
pin 25 is determined by a temperature-compensation algorithm within U201, and is specific to each
crystal Y201, based on a unique code assigned to the crystal that identifies its temperature
characteristics. Stability is better than 2.5 ppm over temperatures of -30 to 60°C. Softwareprogrammable electronic frequency adjustment is achieved by an internal DAC which provides a
frequency adjustment voltage from U201 pin 25 to varactor D201.
The synthesizer IC U201 further divides the 16.8 MHz signal to 2.1 MHz, 2.225 MHz, or 2.4 MHz for
use as reference frequencies. It also provides a buffered 16.8 MHz signal at U201 pin 19 for use by
the ASFICcmp.
To achieve fast locking of the synthesizer, an internal adapt charge pump provides higher current at
U201 pin 45 to quickly force the synthesizer within lock range. The required frequency is then locked
by the normal mode charge pump at pin 43. A loop filter (C243-C245 and R243-R245) removes noise
and spurs from the steering voltage applied to the VCO varactors, with additional filtering located in
the VCO circuit.
Both the normal and adapt charge pumps get their supply from the capacitive voltage multiplier made
up of C221-C224 and D220-D221. Two 3 V square waves from U201 pins 14-15 provide the drive
signals for the voltage multiplier, which generates 12.1 V at U201 pin 47. This voltage is filtered by
C225-C228.
HKLN4216A
November 24, 2003
7-6
403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry
One of the auxiliary outputs of the synthesizer IC (AUX3, U201 pin 2) provides the TRB signal which
determines the operating mode of the VCO, either receive or transmit.
DATA (U401 Pin 100)
CLOCK (U401 Pin 1)
SYNTH_CS (U401 Pin 47)
MOD IN (U451 Pin 40)
+5V (U310 Pin 5)
+3V (U330 Pin 5)
7
8
9
10
LOCK
DATA
FREFOUT
CLK
CEX
GND
MODIN
IOUT
VCC , 5V
IADAPT
13,30
5,20,34,36
23
Reference
Oscillator
U201
Low Voltage MODOUT
Fractional-N
Synthesizer
VDD , 3V
XTAL1
AUX3
25
32
47
WARP
SFOUT
PREIN
BIAS1
VCP
VMULT2 VMULT1
BIAS2
14
4
LOCK (U401 Pin 56)
19
FREF (U451 Pin 34)
6,22,23,24
43
45
2-Pole
Loop Filter
Steering
Line
LO RF
Injection
41
VCO
Mod
2
TRB
28
Filtered 5V
Voltage
Controlled
Oscillator
40
39
15
TX RF
Injection
(First Stage of PA)
Voltage
Multiplier
Prescaler In
Figure 7-4. UHF Synthesizer Block Diagram
7.4.2
Voltage Controlled Oscillator (VCO)
The VCOBIC (U251), shown in Figure 7-5, in conjunction with the Fractional-N synthesizer (U201)
generates RF in both the receive and the transmit modes of operation. The TRB line (U251 pin 19)
determines which oscillator and buffer are enabled. A sample of the RF signal from the enabled
oscillator is routed from U251 pin 12 through a low pass filter, to the prescaler input of the synthesizer
IC (U201 pin 32). After frequency comparison in the synthesizer, a resultant DC control voltage is
used to steer the VCO frequency. When the PLL is locked on frequency, this voltage can vary
between 3.5 V and 10 V. L251 and C252 further attenuate noise and spurs on the steering line
voltage.
In the receive mode, the TRB line (U251 pin 19) is low. This activates the receive VCO and the
receive buffer of U251, which operate within the range of 358.15 to 395.15 MHz. The VCO frequency
is determined by tank inductor L254, C253-C257, and varactor D251. The buffered RF signal at U251
pin 8 is further amplified by Q280 and applied as RX_INJ to the low-pass injection filter in the receiver
front end circuit.
In the transmit mode, U251-19 is driven high by U201 pin 2, enabling the transmit VCO and buffer.
The 438-470 MHz RF signal from U251 pin 10 is applied as TX_INJ to the input of the transmitter
circuit via matching network C290-C291 and L291. TX VCO frequency is determined by L264, C263-
November 24, 2003
HKLN4216A
403-440 MHz UHF Theory Of Operation: Keypad
7-7
C267, and varactor D262. High-port audio modulation from the synthesizer IC is applied as
VCO_MOD to varactor D261 which modulates the transmit VCO.
AUX3 (U201 Pin 2)
TRB_IN
Pin 20
Pin 19
Pin 7
NC
TX/RX/BS
Switching Network
Pin 13
NC
V_SF (U201 Pin 28)
Pin 3
Steer Line
Voltage
(V_STEER)
Vcc-Superfilter
Presc
Pin 12
U251
VCOBIC
Pin 8
RX
RX
RX
Tank
RX VCO
Circuit
TX
Tank
TX VCO
Circuit
Rx Active
Bias
RX INJ
Pin 14
Pin 6
VCC Buffers
Pin 16
TX
Tx Active
Bias
TX
Matching
Network
Vsens
Circuit
Pin 18
3V (U330 Pin 5)
Pin 10
Pin 15
Vcc-Logic
U201 Pin 32
Buffer
Q280
Pin 4 Collector/RF in
Pin 5
Prescaler Out
Pin 2
Rx-I adjust
TX INJ
Pin 1 Pins 9,11,17
Tx-I adjust
V_SF
(U201 Pin 28)
3V
(U330 Pin 5)
Figure 7-5. UHF VCO Block Diagram
7.5
Keypad
Keypad Column
Keypad Row
Keypad Column
28 Pin Connector
(Main Board)
Keypad Row
Keypad
Button
28 Pin Connector
(keypad Board)
The keypad block diagram is shown in Figure 7-6. Pressing a key creates two distinct voltages
KEYPAD_ROW and KEYPAD_COL. These voltages are sent directly to the radio’s microprocessor
on the main board. The microprocessor then interprets the voltage for KEYPAD_ROW and
KEYPAD_COL for each key press.
Keypad Row
Keypad Column
MCP
Figure 7-6. Keypad Block Diagram
HKLN4216A
November 24, 2003
7-8
403-440 MHz UHF Theory Of Operation: Keypad
Notes:
November 24, 2003
HKLN4216A
Chapter 8 438-470 MHz UHF Theory Of Operation
8.1
Introduction
This chapter provides a detailed theory of operation for the radio components. Schematic diagrams
for the circuits described in the following paragraphs are located in Chapter 11of this manual.
8.2
UHF Receiver
The UHF receiver covers the range of 438-470 MHz and provides switchable IF bandwidth for use
with 20/25/30 kHz or 12.5 kHz channel spacing systems. The receiver is divided into two major
blocks, as shown in Figure 8-1.
• Front End
• Back End
Preselector
Filter
RF
Amp
Interstage
1st Mixer
Filter
Crystal
Filter
IF
Amp
RX from
Antenna Switch
Inj Filter
First LO
from Synthesizer
BW_SEL
6G
Ceramic
Resonator
Recovered Audio
6E
Switching
Cer Fltr
4E
Demodulator
RSSI
Figure 8-1. UHF Receiver Block Diagram
8.2.1
Receiver Front End
Incoming RF signals from the antenna are first routed through the harmonic filter and antenna switch,
part of the transmitter circuitry, before being applied to the receiver front end. The receiver front end
consists of a preselector filter, RF amplifier, an interstage filter, and a double-balanced first mixer.
The preselector filter is a fixed-tuned 3-pole Butterworth design using discrete elements (L1-L3, C1C10, C12 and C523) in a shunt-resonator configuration. It has a 3 dB bandwidth of 68 MHz centered
at 460 MHz, an insertion loss of 2 dB and image attenuation of 35 dB at 380 MHz. Diode CR1
protects the RF amplifier by limiting excessive RF levels. The filter bandwidth is considerably wider
than the receive band, to achieve low insertion loss in a compact size. C523 provides a transmissionzero to improve image attenuation.
The output of the filter is matched to the base of RF amplifier Q21, which provides 18 dB of gain and
a noise figure of 4 dB. A BFS505 device is used for high gain, low noise figure and reduced operating
current. Operating voltage is obtained from the 5R source, which is turned off during transmit to
reduce dissipation in Q21. Current mirror Q22 maintains the operating current of Q21 constant at 8
mA regardless of device and temperature variations, for optimum dynamic range and noise figure.
8-2
438-470 MHz UHF Theory Of Operation: UHF Receiver
The output of the RF amplifier is applied to the interstage filter, a fixed-tuned 4-pole Butterworth
shunt-coupled resonator design having a 3 dB bandwidth of 68 MHz centered at 462 MHz, and
insertion loss of 3 dB. This filter yields an image rejection of 48 dB at 380 MHz, assisted by a
transmission-zero at 300 MHz implemented by C524 for the reasons mentioned above.
The output of the interstage filter is connected to the passive double-balanced mixer consisting of
components T41, T42, and CR41. This mixer has a conversion loss of 7.2 dB. Low-side injection from
the frequency synthesizer is filtered by L40-L41 and C41-C45 to remove second harmonic energy
that may degrade half-IF spurious rejection performance. The injection filter has a 3 dB bandwidth of
100 MHz centered at 408 MHz, and an insertion loss of 2 dB. The second-harmonic rejection is
typically 40 dB or greater. The filtered injection signal is applied to T42 at a level of +6 dBm.
The mixer output is applied to a diplexer network (L51-L52, C51, R51) which matches the 44.85 MHz
IF signal to crystal filter FL51, and terminates the mixer into 50Ω at all other frequencies.
8.2.2
Receiver Back End
The receiver back end is a dual conversion design. High IF selectivity is provided by FL51, a 4-pole
fundamental mode 44.85 MHz crystal filter with a minimum 3 dB bandwidth of ±6.7 kHz, a maximum
20 dB bandwidth of + 12.5 kHz, and a maximum insertion loss of 3.5 dB. The output is matched to IF
amplifier stage Q51 by L53 and C93. Q51 provides 16 dB of gain and a noise figure of 1.8 dB. The dc
operating current is 1 mA. The output of Q51 is applied to the input of the receiver IFIC U51. Diode
CR51 limits the maximum RF level applied to the IFIC.
The IFIC is a low-voltage monolithic FM IF system incorporating a mixer/oscillator, two limiting IF
amplifiers, quadrature detector, logarithmic received signal strength indicator (RSSI), voltage
regulator and audio and RSSI op amps. The second LO frequency, 44.395 MHz, is determined by
Y51. The second mixer converts the 44.85 MHz high IF frequency to 455 kHz.
Additional IF selectivity is provided by two ceramic filters, FL52 (between the second mixer and IF
amp) and FL53 or FL54 (between the IF amp and the limiter input). The wider filter FL53 is used for
20/25 kHz channel spacing, and the narrower filter FL54 is used for 12.5 kHz channels. When the
BW_SEL line is high, the two upper diodes in packages D51 and D52 are forward biased, selecting
FL53 for 20/25 kHz channels. When the BW_SEL line is low, the two lower diodes in packages D51
and D52 are forward biased, selecting FL54 for 12.5 kHz channels.
The ceramic filters have the following specifications:
FL52
FL53
FL54
Number of Elements:
4
6
6
Insertion Loss:
4 dB
4 dB
4 dB
6 dB Bandwidth:
15 kHz
15 kHz
9 kHz
50 dB Bandwidth:
30 kHz
30 kHz
22 kHz
Stopband Rejection:
27 dB
47 dB
47 dB
Ceramic resonator Y70 provides phase vs. frequency characteristic required by the quadrature
detector, with 90 degree phase shift occurring at 455 kHz. Buffer Q70 provides a lower driving
impedance from the limiter to the resonator, improving the IF waveform and lowering the distortion of
the recovered audio signal. The recovered audio level at the DEMOD output is 120 mV rms (25 kHz
channel, 3 kHz deviation) or 60 mV rms (12.5 kHz channel, 1.5 kHz deviation). An additional RSSI
output provides a DC voltage level that is proportional to RF signal level. This voltage is measured by
an A/D converter contained in the microprocessor (PE4_AN4, U401 pin 63).
November 24, 2003
HKLN4216A
438-470 MHz UHF Theory Of Operation: UHF Transmitter
8.3
8-3
UHF Transmitter
The UHF transmitter covers the range of 438-470 MHz. Depending on model, the output power of the
transmitter is either switchable on a per-channel basis between high power (4 watts) and low power
(1 watt). The transmitter is divided into four major blocks as shown in Figure 8-2.
•
•
•
•
Power Amplifier
Harmonic Filter
Antenna Matching Network
Power Control.
USWB+
TX_ENA
Power Control
PWR_SET
VGG
VDD
5T
TX_INJ
(From VCO)
Q100
Power Amplifier Module U110
RX_IN
(To Receiver)
Harmonic Filter
Antenna
Switch
J140 Antenna
Jack
Antenna
Antenna
Matching
Network
Figure 8-2. UHF Transmitter Block Diagram
8.3.1
Transmitter Power Amplifier
The transmitter power amplifier has three stages of amplification. The first stage, Q100, operates in
Class A from the 5T source. It provides 17 dB of gain and an output of 50 mW. The current drain is
typically 30mA. Components C105 and L103 match the output of Q100 to the 50Ω input of the module
U110.
U110 is a two stage Silicon MOS FET power amplifier module. Drain voltage is obtained from UNSW
B+ after being routed through current-sense resistor R150 in the power control circuit. The output
power of the module is controlled by varying the DC gate bias on U110 pin 2 (VGG).
8.3.2
Antenna Switch
The antenna switch consists of two pin diodes, D120 and D121. In the receive mode, both diodes are
off. Signals applied at the antenna or at jack J140 are routed, via the harmonic filter, through network
C122-C124 and L121, to the receiver input. In the transmit mode, Q170 is on and TXB+ is present,
forward-biasing both diodes into conduction. The diode current is 20 mA, set by R120-R121. The
transmitter RF from U110 is routed through D120, and via the harmonic filter to the antenna jack.
D121 conducts, shunting RF power and preventing it from reaching the receiver. L121 is selected to
appear as a 1/4 wave at UHF, so that the low impedance of D121 appears as a high impedance at the
junction of D120 and the harmonic filter input. This provides a high series impedance and low shunt
impedance divider between the power amplifier output and receiver input.
8.3.3
Harmonic Filter
The harmonic filter consists of components C130-C136 and L130-L132. The harmonic filter is a
seven-pole Chebychev low-pass configuration, optimized for low insertion loss, with a 3 dB frequency
of approximately 600 MHz and typically less than 0.8 dB insertion loss in the passband.
HKLN4216A
November 24, 2003
8-4
8.3.4
438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry
Antenna Matching Network
The harmonic filter presents a 50Ω impedance to antenna jack J140. A matching network, made up of
C140-C141 and L140, is used to match the antenna impedance to the harmonic filter. This optimizes
the performance of the transmitter and receiver into the impedance presented by the antenna,
significantly improving the antenna's efficiency.
8.3.5
Power Control
The power control circuit is a dc-coupled amplifier whose output is the dc gate bias voltage (VGG)
applied to the two stages of the RF power amplifier U110.
The output power of the transmitter is adjusted by varying the setting of the power-set DAC contained
in the ASFICcmp IC (DACG, U451 pin 6). This PWR_SET voltage is applied to U150 pin 3.
Stage U150-2 compares the voltage drop across current sense resistor R150 to the voltage drop
across resistor R151 caused by current flow through Q150, and adjusts its output (pin 7) to maintain
equal voltages at pins 5 and 6. Thus the current flow through Q150, and hence its emitter voltage, is
proportional to the current drawn by stage U110, which is in turn proportional to the transmitter output
power. The emitter voltage of Q150 is applied to U150 pin 2, where it is compared to the power set
voltage PWR_SET at pin 3.
The output of U150 pin 1 is divided by R110 and R111 and applied as a gate voltage to the power
amplifier U110. By varying this gate voltage as needed to keep the voltages at U150 pins 2 and 3
equal, power is maintained at the desired setting. Excessive final current, for example due to antenna
mismatch, causes a lowering of the voltage at U150 pin 6, an increased voltage at pin 2, and a
lowering of the voltage at pin 1 and of the gate voltage VGG. This prevents damage to the final stage
due to excessive current.
8.4
UHF Frequency Generation Circuitry
The frequency generation system, shown in Figure 8-3, is composed of two circuit blocks, the
Fractional-N synthesizer IC U201, the VCO/Buffer IC U251, and associated circuitry. Figure 8-4
shows the peripheral interconnect and support circuitry used in the synthesizer block, and Figure 8-5
details the internal circuitry of the VCOBIC and its interconnections to the surrounding components.
Refer to the schematic to identify reference designators.
The Fractional-N synthesizer is powered by regulated 5 V and 3 V provided by U310 and U330
respectively. 5 V is applied to U201 pins 13 and 30, and 3 V is applied to pins 5, 20, 34 and 36. The
synthesizer in turn generates a super-filtered 4.5 V supply (VSF, from pin 28) to power U251. In
addition to the VCO, the synthesizer also interfaces with the logic and ASFICcmp circuits.
Programming for the synthesizer is accomplished through the microprocessor SPI_DATA_OUT,
November 24, 2003
HKLN4216A
438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry
8-5
SPI_CLK, and SYNTH_CS (chip select) lines (U409 pins 100, 1 and 47 respectively). A logic high
(3 V) from U201 pin 4 indicates to the microprocessor that the synthesizer is locked.
Voltage
Multiplier
TRB
VCP
Vmult1
Rx VCO
Circuit
Aux3
Synthesizer
U201
Vmult2
16.8 MHz
Ref. Osc.
Buffer
Q280
Rx Out
VCOBIC
U251
Loop
Filter
MOD Out
Modulating
Signal
To Mixer
Tx Out
To PA Driver
Tx VCO
Circuit
Figure 8-3. UHF Frequency Generation Unit Block Diagram
Transmit modulation from the ASFICcmp (U451 pin 40) is applied to U201 pin 10 (MOD_IN). An
electronic attenuator in the ASFICcmp adjusts overall transmitter deviation by varying the audio level
applied to the synthesizer IC. Internally the audio is digitized by the Fractional-N synthesizer and
applied to the loop divider to provide the low-port modulation. The audio is also routed through an
internal attenuator for the purpose of balancing the low port and high port modulation and reducing
the deviation by 6 dB for 12.5 kHz channels, and is available at U201 pin 41 (VCO_MOD). This audio
signal is routed to the VCO's modulator.
8.4.1
Fractional-N Synthesizer
The Fractional-N synthesizer, shown in Figure 8-4, uses a 16.8 MHz crystal (Y201) to provide the
reference frequency for the system. External components C201-C203, R202 and D201 are also part
of the temperature-compensated oscillator circuit. The dc voltage applied to varactor D201 from U201
pin 25 is determined by a temperature-compensation algorithm within U201, and is specific to each
crystal Y201, based on a unique code assigned to the crystal that identifies its temperature
characteristics. Stability is better than 2.5 ppm over temperatures of -30 to 60°C. Softwareprogrammable electronic frequency adjustment is achieved by an internal DAC which provides a
frequency adjustment voltage from U201 pin 25 to varactor D201.
The synthesizer IC U201 further divides the 16.8 MHz signal to 2.1 MHz, 2.225 MHz, or 2.4 MHz for
use as reference frequencies. It also provides a buffered 16.8 MHz signal at U201 pin 19 for use by
the ASFICcmp.
To achieve fast locking of the synthesizer, an internal adapt charge pump provides higher current at
U201 pin 45 to quickly force the synthesizer within lock range. The required frequency is then locked
by the normal mode charge pump at pin 43. A loop filter (C243-C245 and R243-R245) removes noise
and spurs from the steering voltage applied to the VCO varactors, with additional filtering located in
the VCO circuit.
Both the normal and adapt charge pumps get their supply from the capacitive voltage multiplier made
up of C221-C224 and D220-D221. Two 3 V square waves from U201 pins 14-15 provide the drive
signals for the voltage multiplier, which generates 12.1 V at U201 pin 47. This voltage is filtered by
C225-C228.
HKLN4216A
November 24, 2003
8-6
438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry
One of the auxiliary outputs of the synthesizer IC (AUX3, U201 pin 2) provides the TRB signal which
determines the operating mode of the VCO, either receive or transmit.
DATA (U401 Pin 100)
CLOCK (U401 Pin 1)
SYNTH_CS (U401 Pin 47)
MOD IN (U451 Pin 40)
+5V (U310 Pin 5)
+3V (U330 Pin 5)
7
8
9
10
LOCK
DATA
FREFOUT
CLK
CEX
GND
MODIN
IOUT
VCC , 5V
IADAPT
13,30
5,20,34,36
23
Reference
Oscillator
U201
Low Voltage MODOUT
Fractional-N
Synthesizer
VDD , 3V
XTAL1
AUX3
25
32
47
WARP
SFOUT
PREIN
BIAS1
VCP
VMULT2 VMULT1
BIAS2
14
4
LOCK (U401 Pin 56)
19
FREF (U451 Pin 34)
6,22,23,24
43
45
2-Pole
Loop Filter
Steering
Line
LO RF
Injection
41
VCO
Mod
2
TRB
28
Filtered 5V
Voltage
Controlled
Oscillator
40
39
15
TX RF
Injection
(First Stage of PA)
Voltage
Multiplier
Prescaler In
Figure 8-4. UHF Synthesizer Block Diagram
8.4.2
Voltage Controlled Oscillator (VCO)
The VCOBIC (U251), shown in Figure 8-5, in conjunction with the Fractional-N synthesizer (U201)
generates RF in both the receive and the transmit modes of operation. The TRB line (U251 pin 19)
determines which oscillator and buffer are enabled. A sample of the RF signal from the enabled
oscillator is routed from U251 pin 12 through a low pass filter, to the prescaler input of the synthesizer
IC (U201 pin 32). After frequency comparison in the synthesizer, a resultant DC control voltage is
used to steer the VCO frequency. When the PLL is locked on frequency, this voltage can vary
between 3.5 V and 10 V. L251 and C252 further attenuate noise and spurs on the steering line
voltage.
In the receive mode, the TRB line (U251 pin 19) is low. This activates the receive VCO and the
receive buffer of U251, which operate within the range of 393.15 to 425.15 MHz. The VCO frequency
is determined by tank inductor L254, C253-C257, and varactor D251. The buffered RF signal at U251
pin 8 is further amplified by Q280 and applied as RX_INJ to the low-pass injection filter in the receiver
front end circuit.
In the transmit mode, U251-19 is driven high by U201 pin 2, enabling the transmit VCO and buffer.
The 438-470 MHz RF signal from U251 pin 10 is applied as TX_INJ to the input of the transmitter
circuit via matching network C290-C291 and L291. TX VCO frequency is determined by L264, C263-
November 24, 2003
HKLN4216A
438-470 MHz UHF Theory Of Operation: Keypad
8-7
C267, and varactor D262. High-port audio modulation from the synthesizer IC is applied as
VCO_MOD to varactor D261 which modulates the transmit VCO.
AUX3 (U201 Pin 2)
TRB_IN
Pin 20
Pin 19
Pin 7
NC
TX/RX/BS
Switching Network
Pin 13
NC
V_SF (U201 Pin 28)
Pin 3
Steer Line
Voltage
(V_STEER)
Vcc-Superfilter
Presc
Pin 12
U251
VCOBIC
Pin 8
RX
RX
RX
Tank
RX VCO
Circuit
TX
Tank
TX VCO
Circuit
Rx Active
Bias
RX INJ
Pin 14
Pin 6
VCC Buffers
Pin 16
TX
Tx Active
Bias
TX
Matching
Network
Vsens
Circuit
Pin 18
3V (U330 Pin 5)
Pin 10
Pin 15
Vcc-Logic
U201 Pin 32
Buffer
Q280
Pin 4 Collector/RF in
Pin 5
Prescaler Out
Pin 2
Rx-I adjust
TX INJ
Pin 1 Pins 9,11,17
Tx-I adjust
V_SF
(U201 Pin 28)
3V
(U330 Pin 5)
Figure 8-5. UHF VCO Block Diagram
8.5
Keypad
Keypad
Button
Keypad Column
Keypad Row
Keypad Column
28 Pin Connector
(Main Board)
Keypad Row
28 Pin Connector
(keypad Board)
The keypad block diagram is shown in Figure 8-6. Pressing a key creates two distinct voltages
KEYPAD_ROW and KEYPAD_COL. These voltages are sent directly to the radio’s microprocessor
on the main board. The microprocessor then interprets the voltage for KEYPAD_ROW and
KEYPAD_COL for each key press.
Keypad Row
Keypad Column
MCP
Figure 8-6. Keypad Block Diagram
HKLN4216A
November 24, 2003
8-8
438-470 MHz UHF Theory Of Operation: Keypad
Notes:
November 24, 2003
HKLN4216A
Chapter 9 465-495 MHz UHF Theory Of Operation
9.1
Introduction
This chapter provides a detailed theory of operation for the radio components. Schematic diagrams
for the circuits described in the following paragraphs are located in Chapter 11of this manual.
9.2
UHF Receiver
The UHF receiver covers the range of 465-495 MHz and provides switchable IF bandwidth for use
with 20/25/30 kHz or 12.5 kHz channel spacing systems. The receiver is divided into two major
blocks, as shown in Figure 9-1.
• Front End
• Back End
Preselector
Filter
RF
Amp
Interstage
1st Mixer
Filter
Crystal
Filter
IF
Amp
RX from
Antenna Switch
Inj Filter
First LO
from Synthesizer
BW_SEL
6G
Ceramic
Resonator
Recovered Audio
6E
Switching
Cer Fltr
4E
Demodulator
RSSI
Figure 9-1. UHF Receiver Block Diagram
9.2.1
Receiver Front End
Incoming RF signals from the antenna are first routed through the harmonic filter and antenna switch,
part of the transmitter circuitry, before being applied to the receiver front end. The receiver front end
consists of a preselector filter, RF amplifier, an interstage filter, and a double-balanced first mixer.
The preselector filter is a fixed-tuned 3-pole Butterworth design using discrete elements (L1-L3, C1C10, C12 and C523) in a shunt-resonator configuration. It has a 3 dB bandwidth of 68 MHz centered
at 480 MHz, an insertion loss of 2 dB and image attenuation of 39 dB at 405.3 MHz. Diode CR1
protects the RF amplifier by limiting excessive RF levels. The filter bandwidth is considerably wider
than the receive band, to achieve low insertion loss in a compact size. C523 provides a transmissionzero to improve image attenuation.
The output of the filter is matched to the base of RF amplifier Q21, which provides 18 dB of gain and
a noise figure of 3.3 dB. A BFS505 device is used for high gain, low noise figure and reduced
operating current. Operating voltage is obtained from the 5R source, which is turned off during
transmit to reduce dissipation in Q21. Current mirror Q22 maintains the operating current of Q21
constant at 8 mA regardless of device and temperature variations, for optimum dynamic range and
noise figure.
9-2
465-495 MHz UHF Theory Of Operation: UHF Receiver
The output of the RF amplifier is applied to the interstage filter, a fixed-tuned 4-pole Butterworth
shunt-coupled resonator design having a 3 dB bandwidth of 68 MHz centered at 480 MHz, and
insertion loss of 3.3 dB. This filter yields an image rejection of 55 dB at 405.3 MHz, assisted by a
transmission-zero at 300 MHz implemented by C524 for the reasons mentioned above.
The output of the interstage filter is connected to the passive double-balanced mixer consisting of
components T41, T42, and CR41. This mixer has a conversion loss of 7.2 dB. Low-side injection from
the frequency synthesizer is filtered by L40-L41 and C41-C45 to remove second harmonic energy
that may degrade half-IF spurious rejection performance. The injection filter has a 3 dB bandwidth of
100 MHz centered at 408 MHz, and an insertion loss of 2.5 dB. The second-harmonic rejection is
typically 40 dB or greater. The filtered injection signal is applied to T42 at a level of +6 dBm.
The mixer output is applied to a diplexer network (L51-L52, C51, R51) which matches the 44.85 MHz
IF signal to crystal filter FL51, and terminates the mixer into 50Ω at all other frequencies.
9.2.2
Receiver Back End
The receiver back end is a dual conversion design. High IF selectivity is provided by FL51, a 4-pole
fundamental mode 44.85 MHz crystal filter with a minimum 3 dB bandwidth of ±6.7 kHz, a maximum
20 dB bandwidth of + 12.5 kHz, and a maximum insertion loss of 3.5 dB. The output is matched to IF
amplifier stage Q51 by L53 and C93. Q51 provides 16 dB of gain and a noise figure of 1.8 dB. The dc
operating current is 1 mA. The output of Q51 is applied to the input of the receiver IFIC U51. Diode
CR51 limits the maximum RF level applied to the IFIC.
The IFIC is a low-voltage monolithic FM IF system incorporating a mixer/oscillator, two limiting IF
amplifiers, quadrature detector, logarithmic received signal strength indicator (RSSI), voltage
regulator and audio and RSSI op amps. The second LO frequency, 44.395 MHz, is determined by
Y51. The second mixer converts the 44.85 MHz high IF frequency to 455 kHz.
Additional IF selectivity is provided by two ceramic filters, FL52 (between the second mixer and IF
amp) and FL53 or FL54 (between the IF amp and the limiter input). The wider filter FL53 is used for
20/25 kHz channel spacing, and the narrower filter FL54 is used for 12.5 kHz channels. When the
BW_SEL line is high, the two upper diodes in packages D51 and D52 are forward biased, selecting
FL53 for 20/25 kHz channels. When the BW_SEL line is low, the two lower diodes in packages D51
and D52 are forward biased, selecting FL54 for 12.5 kHz channels.
The ceramic filters have the following specifications:
FL52
FL53
FL54
Number of Elements:
4
6
6
Insertion Loss:
4 dB
4 dB
4 dB
6 dB Bandwidth:
15 kHz
15 kHz
9 kHz
50 dB Bandwidth:
30 kHz
30 kHz
22 kHz
Stopband Rejection:
27 dB
47 dB
47 dB
Ceramic resonator Y70 provides phase vs. frequency characteristic required by the quadrature
detector, with 90 degree phase shift occurring at 455 kHz. Buffer Q70 provides a lower driving
impedance from the limiter to the resonator, improving the IF waveform and lowering the distortion of
the recovered audio signal. The recovered audio level at the DEMOD output is 120 mV rms (25 kHz
channel, 3 kHz deviation) or 60 mV rms (12.5 kHz channel, 1.5 kHz deviation). An additional RSSI
output provides a DC voltage level that is proportional to RF signal level. This voltage is measured by
an A/D converter contained in the microprocessor (PE4_AN4, U401 pin 63).
November 24, 2003
HKLN4216A
465-495 MHz UHF Theory Of Operation: UHF Transmitter
9.3
9-3
UHF Transmitter
The UHF transmitter covers the range of 465-495 MHz. Depending on model, the output power of the
transmitter is either switchable on a per-channel basis between high power (4 watts) and low power
(1 watt), or is factory preset to 2 watts. The transmitter is divided into four major blocks as shown in
Figure 9-2.
•
•
•
•
Power Amplifier
Harmonic Filter
Antenna Matching Network
Power Control.
USWB+
TX_ENA
Power Control
PWR_SET
VGG
VDD
5T
TX_INJ
(From VCO)
Q100
Power Amplifier Module U110
RX_IN
(To Receiver)
Harmonic Filter
Antenna
Switch
J140 Antenna
Jack
Antenna
Antenna
Matching
Network
Figure 9-2. UHF Transmitter Block Diagram
9.3.1
Transmitter Power Amplifier
The transmitter power amplifier has three stages of amplification. The first stage, Q100, operates in
Class A from the 5T source. It provides 17 dB of gain and an output of 50 mW. The current drain is
typically 30mA. Components C105 and L103 match the output of Q100 to the 50Ω input of the module
U110.
U110 is a two stage Silicon MOS FET power amplifier module. Drain voltage is obtained from UNSW
B+ after being routed through current-sense resistor R150 in the power control circuit. The output
power of the module is controlled by varying the DC gate bias on U110 pin 2 (VGG).
9.3.2
Antenna Switch
The antenna switch consists of two pin diodes, D120 and D121. In the receive mode, both diodes are
off. Signals applied at the antenna or at jack J140 are routed, via the harmonic filter, through network
C122-C124 and L121, to the receiver input. In the transmit mode, Q170 is on and TXB+ is present,
forward-biasing both diodes into conduction. The diode current is 20 mA, set by R120-R121. The
transmitter RF from U110 is routed through D120, and via the harmonic filter to the antenna jack.
D121 conducts, shunting RF power and preventing it from reaching the receiver. L121 is selected to
appear as a 1/4 wave at UHF, so that the low impedance of D121 appears as a high impedance at the
junction of D120 and the harmonic filter input. This provides a high series impedance and low shunt
impedance divider between the power amplifier output and receiver input.
9.3.3
Harmonic Filter
The harmonic filter consists of components C130-C136 and L130-L132. The harmonic filter is a
seven-pole Chebychev low-pass configuration, optimized for low insertion loss, with a 3 dB frequency
of approximately 655 MHz and typically less than 0.8 dB insertion loss in the passband.
HKLN4216A
November 24, 2003
9-4
9.3.4
465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry
Antenna Matching Network
The harmonic filter presents a 50Ω impedance to antenna jack J140. A matching network, made up of
C140-C141 and L140, is used to match the antenna impedance to the harmonic filter. This optimizes
the performance of the transmitter and receiver into the impedance presented by the antenna,
significantly improving the antenna's efficiency.
9.3.5
Power Control
The power control circuit is a dc-coupled amplifier whose output is the dc gate bias voltage (VGG)
applied to the two stages of the RF power amplifier U110.
The output power of the transmitter is adjusted by varying the setting of the power-set DAC contained
in the ASFICcmp IC (DACG, U451 pin 6). This PWR_SET voltage is applied to U150 pin 3.
Stage U150-2 compares the voltage drop across current sense resistor R150 to the voltage drop
across resistor R151 caused by current flow through Q150, and adjusts its output (pin 7) to maintain
equal voltages at pins 5 and 6. Thus the current flow through Q150, and hence its emitter voltage, is
proportional to the current drawn by stage U110, which is in turn proportional to the transmitter output
power. The emitter voltage of Q150 is applied to U150 pin 2, where it is compared to the power set
voltage PWR_SET at pin 3.
The output of U150 pin 1 is divided by R110 and R111 and applied as a gate voltage to the power
amplifier U110. By varying this gate voltage as needed to keep the voltages at U150 pins 2 and 3
equal, power is maintained at the desired setting. Excessive final current, for example due to antenna
mismatch, causes a lowering of the voltage at U150 pin 6, an increased voltage at pin 2, and a
lowering of the voltage at pin 1 and of the gate voltage VGG. This prevents damage to the final stage
due to excessive current.
9.4
UHF Frequency Generation Circuitry
The frequency generation system, shown in Figure 9-3, is composed of two circuit blocks, the
Fractional-N synthesizer IC U201, the VCO/Buffer IC U251, and associated circuitry. Figure 9-4
shows the peripheral interconnect and support circuitry used in the synthesizer block, and Figure 9-5
details the internal circuitry of the VCOBIC and its interconnections to the surrounding components.
Refer to the schematic to identify reference designators.
The Fractional-N synthesizer is powered by regulated 5 V and 3 V provided by U310 and U330
respectively. 5 V is applied to U201 pins 13 and 30, and 3 V is applied to pins 5, 20, 34 and 36. The
synthesizer in turn generates a super-filtered 4.5 V supply (VSF, from pin 28) to power U251. In
addition to the VCO, the synthesizer also interfaces with the logic and ASFICcmp circuits.
Programming for the synthesizer is accomplished through the microprocessor SPI_DATA_OUT,
November 24, 2003
HKLN4216A
465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry
9-5
SPI_CLK, and SYNTH_CS (chip select) lines (U409 pins 100, 1 and 47 respectively). A logic high
(3 V) from U201 pin 4 indicates to the microprocessor that the synthesizer is locked.
Voltage
Multiplier
TRB
VCP
Vmult1
Rx VCO
Circuit
Aux3
Synthesizer
U201
Vmult2
16.8 MHz
Ref. Osc.
Buffer
Q280
Rx Out
VCOBIC
U251
Loop
Filter
MOD Out
Modulating
Signal
To Mixer
Tx Out
To PA Driver
Tx VCO
Circuit
Figure 9-3. UHF Frequency Generation Unit Block Diagram
Transmit modulation from the ASFICcmp (U451 pin 40) is applied to U201 pin 10 (MOD_IN). An
electronic attenuator in the ASFICcmp adjusts overall transmitter deviation by varying the audio level
applied to the synthesizer IC. Internally the audio is digitized by the Fractional-N synthesizer and
applied to the loop divider to provide the low-port modulation. The audio is also routed through an
internal attenuator for the purpose of balancing the low port and high port modulation and reducing
the deviation by 6 dB for 12.5 kHz channels, and is available at U201 pin 41 (VCO_MOD). This audio
signal is routed to the VCO's modulator.
9.4.1
Fractional-N Synthesizer
The Fractional-N synthesizer, shown in Figure 9-4, uses a 16.8 MHz crystal (Y201) to provide the
reference frequency for the system. External components C201-C203, R202 and D201 are also part
of the temperature-compensated oscillator circuit. The dc voltage applied to varactor D201 from U201
pin 25 is determined by a temperature-compensation algorithm within U201, and is specific to each
crystal Y201, based on a unique code assigned to the crystal that identifies its temperature
characteristics. Stability is better than 2.5 ppm over temperatures of -30 to 60°C. Softwareprogrammable electronic frequency adjustment is achieved by an internal DAC which provides a
frequency adjustment voltage from U201 pin 25 to varactor D201.
The synthesizer IC U201 further divides the 16.8 MHz signal to 2.1 MHz, 2.225 MHz, or 2.4 MHz for
use as reference frequencies. It also provides a buffered 16.8 MHz signal at U201 pin 19 for use by
the ASFICcmp.
To achieve fast locking of the synthesizer, an internal adapt charge pump provides higher current at
U201 pin 45 to quickly force the synthesizer within lock range. The required frequency is then locked
by the normal mode charge pump at pin 43. A loop filter (C243-C245 and R243-R245) removes noise
and spurs from the steering voltage applied to the VCO varactors, with additional filtering located in
the VCO circuit.
Both the normal and adapt charge pumps get their supply from the capacitive voltage multiplier made
up of C221-C224 and D220-D221. Two 3 V square waves from U201 pins 14-15 provide the drive
signals for the voltage multiplier, which generates 12.1 V at U201 pin 47. This voltage is filtered by
C225-C228.
HKLN4216A
November 24, 2003
9-6
465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry
One of the auxiliary outputs of the synthesizer IC (AUX3, U201 pin 2) provides the TRB signal which
determines the operating mode of the VCO, either receive or transmit.
DATA (U401 Pin 100)
CLOCK (U401 Pin 1)
SYNTH_CS (U401 Pin 47)
MOD IN (U451 Pin 40)
+5V (U310 Pin 5)
+3V (U330 Pin 5)
7
8
9
10
LOCK
DATA
FREFOUT
CLK
CEX
GND
MODIN
IOUT
VCC , 5V
IADAPT
13,30
5,20,34,36
23
Reference
Oscillator
U201
Low Voltage MODOUT
Fractional-N
Synthesizer
VDD , 3V
XTAL1
AUX3
25
32
47
WARP
SFOUT
PREIN
BIAS1
VCP
VMULT2 VMULT1
BIAS2
14
4
LOCK (U401 Pin 56)
19
FREF (U451 Pin 34)
6,22,23,24
43
45
2-Pole
Loop Filter
Steering
Line
LO RF
Injection
41
VCO
Mod
2
TRB
28
Filtered 5V
Voltage
Controlled
Oscillator
40
39
15
TX RF
Injection
(First Stage of PA)
Voltage
Multiplier
Prescaler In
Figure 9-4. UHF Synthesizer Block Diagram
9.4.2
Voltage Controlled Oscillator (VCO)
The VCOBIC (U251), shown in Figure 9-5, in conjunction with the Fractional-N synthesizer (U201)
generates RF in both the receive and the transmit modes of operation. The TRB line (U251 pin 19)
determines which oscillator and buffer are enabled. A sample of the RF signal from the enabled
oscillator is routed from U251 pin 12 through a low pass filter, to the prescaler input of the synthesizer
IC (U201 pin 32). After frequency comparison in the synthesizer, a resultant DC control voltage is
used to steer the VCO frequency. When the PLL is locked on frequency, this voltage can vary
between 3.5 V and 10 V. L251 and C252 further attenuate noise and spurs on the steering line
voltage.
In the receive mode, the TRB line (U251 pin 19) is low. This activates the receive VCO and the
receive buffer of U251, which operate within the range of 420.15 to 450.15 MHz. The VCO frequency
is determined by tank inductor L254, C253-C257, and varactor D251. The buffered RF signal at U251
pin 8 is further amplified by Q280 and applied as RX_INJ to the low-pass injection filter in the receiver
front end circuit.
In the transmit mode, U251-19 is driven high by U201 pin 2, enabling the transmit VCO and buffer.
The 438-470 MHz RF signal from U251 pin 10 is applied as TX_INJ to the input of the transmitter
circuit via matching network C290-C291 and L291. TX VCO frequency is determined by L264, C263-
November 24, 2003
HKLN4216A
465-495 MHz UHF Theory Of Operation: Keypad
9-7
C267, and varactor D262. High-port audio modulation from the synthesizer IC is applied as
VCO_MOD to varactor D261 which modulates the transmit VCO.
AUX3 (U201 Pin 2)
TRB_IN
Pin 20
Pin 19
Pin 7
NC
TX/RX/BS
Switching Network
Pin 13
NC
V_SF (U201 Pin 28)
Pin 3
Steer Line
Voltage
(V_STEER)
Vcc-Superfilter
Presc
Pin 12
U251
VCOBIC
Pin 8
RX
RX
RX
Tank
RX VCO
Circuit
TX
Tank
TX VCO
Circuit
Rx Active
Bias
RX INJ
Pin 14
Pin 6
VCC Buffers
Pin 16
TX
Tx Active
Bias
TX
Matching
Network
Vsens
Circuit
Pin 18
3V (U330 Pin 5)
Pin 10
Pin 15
Vcc-Logic
U201 Pin 32
Buffer
Q280
Pin 4 Collector/RF in
Pin 5
Prescaler Out
Pin 2
Rx-I adjust
TX INJ
Pin 1 Pins 9,11,17
Tx-I adjust
V_SF
(U201 Pin 28)
3V
(U330 Pin 5)
Figure 9-5. UHF VCO Block Diagram
9.5
Keypad
Keypad
Button
Keypad Column
Keypad Row
Keypad Column
28 Pin Connector
(Main Board)
Keypad Row
28 Pin Connector
(keypad Board)
The keypad block diagram is shown in Figure 9-6. Pressing a key creates two distinct voltages
KEYPAD_ROW and KEYPAD_COL. These voltages are sent directly to the radio’s microprocessor
on the main board. The microprocessor then interprets the voltage for KEYPAD_ROW and
KEYPAD_COL for each key press.
Keypad Row
Keypad Column
MCP
Figure 9-6. Keypad Block Diagram
HKLN4216A
November 24, 2003
9-8
465-495 MHz UHF Theory Of Operation: Keypad
Notes:
November 24, 2003
HKLN4216A
Chapter 10 UHF Troubleshooting Tables
10.1 Troubleshooting Table for Receiver
Table 10-1. Troubleshooting Table for Receiver
Symptom
Radio Dead (no
turn-on beep, no
LED indication)
Possible Causes
Procedure
Corrective Action
1. Battery dead or defective.
Substitute known good battery or
battery eliminator.
Charge or replace battery.
2. Defective battery contacts.
Inspect battery contacts for corrosion
or bent terminals.
Clean/repair/replace J301.
3. Blown fuse
Check voltage on each side of fuse.
If blown, 0 VDC after fuse.
Check for short on output,
check D301, VR301, troubleshoot/repair as needed, replace
fuse.
4. DC switching fault
Verify battery voltage present at
S444 pin 5 when radio is on.
Check/replace on-off-volume
control S444.
Verify Q494-1 is at least 1V dc,
Q494-6 is ~0.1V dc, Q493-3 is at
Vbatt.
Troubleshoot/replace Q493/4.
Verify clock input to U401-90
(EXTAL) is 7.3975 MHz using high
impedance probe. If clock is 3.8MHz,
check for shorts on U401 pins. Connect RIB to verify communication via
CPS.
Verify 16.8 MHz signal at U45134. If OK, troubleshoot/replace
U451. If not present, troubleshoot U201 Synthesizer. Reprogram/reflash as needed.
Verify U401-94 (RESET) is high.
If RESET is Low, troubleshoot
regulator U320. Check for
shorts at U401 pins. Replace
U401. Reprogram as needed.
Verify U310-5 is 5V dc, U320-5 is
3.3V dc, U330-5 is 3V dc.
Check for shorts on outputs,
troubleshoot/repair as needed,
replace faulty regulator.
5. Microprocessor not
starting up.
6. Regulator fault
10-2
UHF Troubleshooting Tables: Troubleshooting Table for Receiver
Table 10-1. Troubleshooting Table for Receiver (Continued)
Symptom
No Audio
No Receive
(squelch noise
present)
Possible Causes
Corrective Action
1. Synthesizer out of lock Verify U201-4 is at 3V dc.
Troubleshoot synthesizer/VCO
circuits.
2. Defective IFIC
Verify audio is present at U51-8.
Check Q70, Y70, U51.
3. RX audio buffer fault
Verify audio is present at U451-2.
Check U510 and associated
parts.
4. ASFIC fault
Verify audio is present at U451-41.
Verify U451-14 is high.
Check squelch setting, PL/DPL
programming. Troubleshoot/
replace U451.
5. Audio PA fault
Verify U490-1 is <0.2V dc.
Check Q490.
Verify audio is present at U490-5
and 8.
Check/replace U490.
6. Defective speaker
Verify audio is present at speaker
terminals.
If not, check continuity of J471-2
and 3. Check J491. If yes,
replace speaker.
1. No first injection
Check that RF level at T42-6 is
approx +6 dBm.
Check injection filter C40-44,
L40-41.
Check that RF level at U251-8 is at
least -8 dBm.
If yes, check Q280 and associated parts. If no, check U251
and components on pins 5 and
6.
Verify U401-49 is high in RX.
Check/replace U401
Verify Q311 gate is 0V dc in RX
Check/replace Q313.
Verify Q311 drain is 5V dc in RX.
Check for shorts, check/replace
Q311.
3. Harmonic filter or
antenna switch fault
Apply on-channel 100 mV RF signal
at antenna port. Verify RF level at jct.
C1/C2 per schematic.
Check TX harmonic filter, D120121. Should be 0V dc on D120121.
4. Back end fault
Apply on-channel 100 mV RF signal
at antenna port. Measure RF levels
from FL51 through U51.
Check components prior to lossof-signal point.
5. No second injection
Measure RF level at U51-3, verify
approx. 280 mV rms.
If dc voltages at U51-3 and 4
are OK, check Y51 and associated parts. If not replace U51.
2. No 5R source.
November 24, 2003
Procedure
HKLN4216A
UHF Troubleshooting Tables: Troubleshooting Table for Synthesizer
10-3
10.2 Troubleshooting Table for Synthesizer
Table 10-2. Troubleshooting Table for Synthesizer
Symptom
Synthesizer Out of
Lock (RX mode
only)
Synthesizer Out of
Lock (TX mode
only)
Synthesizer Out of
Lock (RX and TX
modes)
Possible Causes
1. VCO fault
Corrective Action
Verify oscillator is working, check RF
level at U251-10 per schematic.
Check VCO tank components
connected to U251-5 and 6.
Check dc voltages at U251 pin 2
through 6 and 10 per Table 10-4.
Check for shorts/opens, replace
U251.
Verify steering line voltage is
between ~3V and 10V.
Check D251 and associated
components.
2. Synthesizer fault
Verify TRB line (from U201-2 to
U251-19) is low in RX mode
Check for shorts, check U201
voltages per Table 10-4,
replace U201 if incorrect.
3. Programming fault
Verify RX channel programming is
correct.
Re-program if necessary.
1. VCO fault
Verify oscillator is working, check RF
level at U251-10 per schematic.
Check VCO tank components
connected to U251-15 and 16.
Check dc voltages at U251 pins
1,3,4,10,15,16 per Table 10-4.
Check for shorts/opens, replace
U251.
Verify steering line voltage is
between ~3V and 10V.
Check D261 and associated
components.
2. Synthesizer fault
Verify TRB line (U201-2 to U251-19)
is high (3V) in TX mode
Check for shorts, check U201
voltages per Table 10-4,
replace U201 if incorrect.
3. Programming fault
Verify TX channel programming is
correct.
Re-program if necessary.
1. VCO fault
Check that RF level at U251-12 is at
least 150 mV (VHF) or -12 to -20
dBm (UHF)
If low/missing, check L276,
C276-7, R276.
2. Synthesizer fault
Check that RF level at U201-32 is at
least 150 mV (VHF) or -12 to -20
dBm (UHF).
If correct, check/replace U201.
If incorrect, check R248 and
C241.
Verify steering line voltage is
between ~3V and 10V.
Check loop filter components
R243-5 and C243-5.
Verify 4.5V dc at U201-28.
Check C231-233, etc., for
shorts. If OK check/replace
U201.
Verify 12.1V dc at U201-47
Check for 3V 1.05 MHz sq
waves at U201-14 and 15.
Check C218-228, D220-221.
Verify channel programming is correct.
Re-program if necessary.
3. DC voltage fault
4. Programming fault
HKLN4216A
Procedure
November 24, 2003
10-4
UHF Troubleshooting Tables: Troubleshooting Table for Transmitter
10.3 Troubleshooting Table for Transmitter
Table 10-3. Troubleshooting Table for Transmitter
Symptom
No Transmit (no TX
LED indication)
No Transmit (TX
LED indication OK)
Low Power
Possible Causes
Corrective Action
1. PTT switch defective.
Verify U401-71 goes low when PTT
is pressed.
2. EXT MIC PTT fault
Verify U401-72 goes low when J471- Check/replace Q470, L471 etc.
4 is grounded.
Replace PTT switch S441.
1. Synthesizer out of lock Refer to Table 10-2.
Refer to Table 10-2.
2. No TX_ENABLE
Verify U401-50 is high when pin 71
or 72 is low.
Check/replace U401.
3. TX DC switch fault
Verify Q171-C is 0V in TX.
Replace Q171.
Verify Q170-C is at Vbatt in TX.
Check for shorts, replace Q170.
4. Power control fault
Check Q150 and U150 dc voltages
per schematic and Table 10-4.
Repair/replace defective components
5. No TX injection
Check that RF level at jct. R100/
R101 per schematic.
Check U251, L291-292, C290291.
6. No 5T source
Verify Q312 gate is 0V dc in TX
Check/replace Q313.
Verify Q312 drain is 5V dc in TX.
Check for shorts, check/replace
Q312.
7. TX gain stage failure
Check RF levels at Q100 and U110
per schematic.
Troubleshoot Q100/U110 and
associated circuitry.
8. Antenna switch failure
Verify dc voltage at jct. R122/L120 is
approx 1.5V.
Check/replace D120-121, L120121, R120-122, etc.
1. Low TX injection
Check that RF level at jct. R100/
R101 per schematic.
Check U251, L291-292, C290291.
2. Low gain in TX stage
Verify dc voltage at Q100-E is ~1.3V
(VHF) or ~0.5V (UHF).
Verify 5T voltage is correct.
Troubleshoot Q100 circuitry.
Verify that RF level at U110-1 is
approx. 1V (VHF) or 1.6V (UHF).
Troubleshoot Q100 circuitry.
Check/replace Q100.
Verify that the dc voltage at
PWR_SET (R162) is approx 1.8V dc
(at 1 watt) to 2.6V dc (at 4-5 watts).
Check programming. Troubleshoot controller circuitry. Check/
replace U451.
Verify that the dc voltage at U110-2
is approx 2-3V dc (at 1 watt) to 3-4V
dc (at 4-5 watts). (See schematic.)
Troubleshoot U150, Q150 and
associated circuitry.
4. Antenna switch defect
Verify dc voltage at jct. R122/L120
(VHF) or R121/L120 (UHF) is approx
1.7V. Note: Do not attempt to measure RF or DC voltages at the
diodes. Damage to test equipment
may occur.
Check/replace D120-121, L120121, R120-122, etc.
5. Harmonic filter defect
Visually inspect components C130137, L130-132. Check dc continuity
of L130-132 in RX mode only.
Repair/replace if necessary.
3. Incorrect control voltage
November 24, 2003
Procedure
HKLN4216A
UHF Troubleshooting Tables: Troubleshooting Table for Transmitter
10-5
Table 10-3. Troubleshooting Table for Transmitter (Continued)
Symptom
Poor TX range,
conducted power
OK
No internal mic
audio (EXT MIC
audio OK)
No EXT MIC audio
Possible Causes
Procedure
1. RF test jack defective
Verify continuity of J140 pins 3 and 4
in RX mode only.
Replace J140.
2. Antenna matching net- Visually inspect components C140work fault
141, L140 or L141. Check dc continuity of L140 or L141in RX mode
only.
Repair/replace if necessary.
3. Defective or wrong
antenna
Verify correct antenna is installed.
Try another antenna.
Replace antenna.
1. Mic bias fault
Verify U451-35 is low when side PTT
is pressed.
Check/replace U451.
Verify Q470-6 is high when side PTT
button is pressed.
Check/replace R474, R476, and
Q470.
2. Defective mic
Verify approx 1.8V dc across cartridge when side PTT button is
pressed. Verify audio present (~10
mV rms) when speaking into mic.
Check mic connector and R478.
Replace mic cartridge.
3. Defective mic jack
Verify continuity between J471 pins
4 and 5.
Replace J471.
1. Mic bias fault
Verify approx 1.8V dc across EXT
MIC cartridge in TX mode. Verify
audio present (~10 mV rms) when
speaking into mic.
Check Q470. R475, R477,
L471. Check VR473, VR475,
D470 for shorts.
2. Audio path fault
Verify mic audio present (~10 mV
rms) at U451-46.
Check L471, C470.
Verify amplified mic audio present
(~200 mV rms) at U451-40.
Check/replace U451.
3. Defective audio acces- Try another accessory.
sory
HKLN4216A
Corrective Action
Replace defective accessory.
November 24, 2003
10-6
UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
10.4 Troubleshooting Table for Board and IC Signals
Table 10-4. Troubleshooting Table for Board and IC Signals
IC Designator
Pin
U51
IFIC
1
RF input 44.85 MHz
1.20
2
RF input decoupling
1.20
3
2nd LO osc output
4.02
4
2nd LO osc input
4.60
5
RSSI output
0.74
6
Vcc
4.70
7
Audio feedback
0.89
8
Audio output
1.44
DEMOD to stage U510
9
RSSI feedback
0.74
(no received signal)
10
Quad detector input
2.22
11
Limiter output
1.25
12
Limiter decoupling 2
1.30
13
Limiter decoupling 1
1.30
14
Limiter input
1.28
15
Ground
GND
16
IF amp output
1.22
17
IF amp decoupling 2
1.26
18
IF amp input
1.26
19
IF amp decoupling 1
1.26
20
2nd mixer output
3.09
1
Inverter 1 input
0
(25 kHz mode)
2
Inverter 2 output
0
(25 kHz mode)
3
Inverter 3 input (NU)
GND
4
Ground
GND
5
Inverter 3 output (NU)
4.96
6
Inverter 2 input
3.00
(25 kHz mode)
7
Inverter 1 output
4.95
(25 kHz mode)
8
Vcc
4.96
U52
BW Select Switch
November 24, 2003
Pin Function
DC Voltage
Comments (Condition)
(no received signal)
HKLN4216A
UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
10-7
Table 10-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U110
RF Power Amp
1
RF input
2
Vgg (gate bias)
3
Vdd
4
RF output
5
Ground
1
Unit 1 output
4.20 (typ)
(TX mode) (5.8V typ at VHF)
2
Unit 1 (-) input
2.39 (typ)
(TX mode)
3
Unit 1 (+) input
2.39 (typ)
(TX mode)
4
Ground
5
Unit 2 (+) input
3.30 (typ)
(TX mode)
6
Unit 2 (-) input
3.35 (typ)
(TX mode)
7
Unit 2 output
2.23 (typ)
(TX mode)
8
Vcc
6.79
(TX mode)
1
AUX2 output (NU)
0
2
AUX3 output (TRB)
0.03
3
AUX4 output (NU)
0
4
Lock detect output
2.98
5
PD Vdd
2.98
6
Digital ground
GND
7
Serial data input
3.23
8
Serial clock input
0
9
Synth chip select
3.23
From U401-47
10
Modulation input
1.50
From U451-40
11
VMULT4 (NU)
2.98
12
VMULT3 (NU)
0
13
VRO
4.96
14
VMULT2
1.49
15
VMULT1
1.49
16
INDMULT (NU)
0
17
NC1
0
18
Ref select (NU)
0
19
Buffered 16.8 MHz out
1.54
20
Analog Vdd
3.00
21
V bypass (NU)
1.55
22
Analog ground
GND
23
Ref osc XTAL1
2.07
U150
Dual Opamp
U201
Freq Synthesizer
HKLN4216A
Pin Function
DC Voltage
0
2.65 (typ)
6.59
--
Comments (Condition)
(TX mode)
(TX mode) (4.25V typ at VHF)
(TX mode)
Do not measure
GND
GND
To U251-19 (RX mode)
To U401-56
November 24, 2003
10-8
UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
Table 10-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U201
Freq Synthesizer
24
Ref osc XTAL2
25
Ref osc warp output
3.00
26
Superfilter cap
4.48
27
Superfilter base (NU)
3.76
28
Superfilter output
4.52
29
NC2
30
Superfilter input
31
NC3
32
Prescaler input
1.97
33
Prescaler ground
GND
34
Prescaler Vdd
2.99
35
Prescaler Vref (NU)
1.97
36
Digital Vdd
2.99
37
TEST1 (NU)
0.01
38
TEST2 (NU)
0
39
Bias 2
3.38 (typ)
(1.34V in TX mode)
40
Bias 1
1.50 (typ)
(3.20V in TX mode)
41
Modulation output
3.42 (typ)
(1.62V typ in TX mode)
42
CCOMP (NU)
43
Steering line IOUT
44
PD ground
45
Steering line IADAPT
46
Adapt switch (NU)
47
Voltage from charge pump
12.8
48
AUX1 output (NU)
2.98
1
TX VCO current adjust
4.50
2
RX VCO current adjust
4.35
3
Superfiltered input
4.51
4
Collector RF in amp
4.35
5
RX VCO base
1.27
6
RX VCO emitter
0.48
7
RX switch output (NU)
8
RX buffered VCO output
3.36
9
GND_FLAG
GND
10
TX buffered VCO output
3.36
11
GND_BUFFERS
GND
U251
VCO / Buffer
November 24, 2003
Pin Function
DC Voltage
Comments (Condition)
0
0
4.96
0
0.05
9.62 (typ)
Depends on frequency
GND
9.62 (typ)
Depends on frequency
0
0
HKLN4216A
UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
10-9
Table 10-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U251
VCO / Buffer
12
Prescaler output
2.26
13
TX switch output (NU)
0.06
14
Vcc_BUFFERS
3.00
15
TX VCO emitter
0
(RX mode)
16
TX VCO base
0
(RX mode)
17
GND_LOGIC
GND
18
Vcc_LOGIC
3.00
19
TRB input
0.03
20
FLIP input
GND
1
Vin
7.48
2
Ground
GND
3
Control input
7.48
4
Bypass capacitor
1.26
5
Vout
4.96
1
Ground
GND
2
Feedback
1.23
3
Tap (NU)
0
4
Vin
7.48
5
Vout
3.23
6
Sense (NU)
7
Error (reset output)
3.20
8
Shutdown input
7.48
1
Vin
7.48
2
Ground
GND
3
Control input
7.48
4
Bypass capacitor
1.26
5
Vout
3.00
1
PD4_SCK serial clock input
2
PD5_SS
3.23
ASFIC chip select
3
PD6_VLIN
3.23
EEPROM chip select
4
PG7_R_W
3.21
5
PG6_AS
3.23
6
PG0_XA13
3.23
7
PB7_ADDR15
0.026
8
PB6_ADDR14
0.028
9
PB3_ADDR11
3.06
U310
5V Regulator
U320
3.3V Regulator
U330
3V Regulator
U401
Microprocessor
HKLN4216A
Pin Function
DC Voltage
Comments (Condition)
From U201-2 (RX mode)
0
0
November 24, 2003
10-10
UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
Table 10-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U401
Microprocessor
10
PB1_ADDR9
3.05
11
PB2_ADDR10
0.16
12
VDD
3.23
13
VSS
GND
14
PBO_ADDR8
3.05
15
PB5_ADDR13
0.13
16
PG1_XA14
0.20
17
PG4_XA17
3.17
18
PG5_XA18
0
19
PG3_XA16
3.21
20
PG2_XA15
0.30
21
PB4_ADDR12
0.22
22
PF7_ADDR7
3.03
23
PF6_ADDR6
3.08
24
PF5_ADDR5
3.06
25
PF4_ADDR4
0.16
26
PF3_ADDR3
0.26
27
PF2_ADDR2
3.06
28
PF1_ADDR1
3.06
29
PFO_ADDR0
3.05
30
PC0_DATA0
0.69
31
PC1_DATA1
0.96
32
PC2_DATA2
1.10
33
PC3_DATA3
0.81
34
PC4_DATA4
0.62
35
PC5_DATA5
0.68
36
PC6_DATA6
0.67
37
PC7_DATA7
0.73
38
PH7_CSPROG
3.05
39
VDDL
3.23
40
VSSL
GND
41
PH6_CSGP2
3.23
42
PH5_CSGP1
3.23
43
PH4_CSIO
0
44
PH3_PW4
3.21
45
PH2_PW3
0
November 24, 2003
Pin Function
DC Voltage
Comments (Condition)
On/off control output
HKLN4216A
UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
10-11
Table 10-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U401
Microprocessor
46
PH1_PW2
3.00
47
PH0_PW1
3.23
48
XIRQ
3.00
49
PI7
1.48
RX enable
50
PI6
0.01
TX enable
51
PI5
3.23
52
PI4
0
Green LED enable
53
PI3
0
Red LED enable
54
PI2
0
55
PI1
0
56
PI0
2.98
Lock detect from U201-4
57
MODB_VSTBY
3.22
Boot mode enable
58
MODA_LIR
3.12
59
AVDD
3.23
60
PE7_AN7
3.20
61
PE6_AN6
3.20
62
PE5_AN5
2.91
VOX threshold detect
63
PE4_AN4
0.73
RSSI input
64
PE3_AN3
0.14
65
PE2_AN2
1.62
66
PE1_AN1
0 - 3.3 V
67
PE0_AN0
2.48
68
VRL
0
69
VRH
3.20
70
AVSS
GND
71
PJ0_CSGP3
3.23
72
PJ1_CSGP4
0
73
PJ2
3.23
74
PJ3
3.23
75
PJ4
3.23
76
PJ5
0
77
PJ6
3.23
Bottom option button
78
PJ7
3.23
Top option button
79
PA0_IC3
0
80
PA1_IC2
1.57
81
PA2_IC1
3.00
HKLN4216A
Pin Function
DC Voltage
Comments (Condition)
Synth chip select
Volume control wiper
33% of battery voltage
Side PTT button
External MIC PTT
November 24, 2003
10-12
UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
Table 10-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U401
Microprocessor
82
PA3_IC4_OC5_OC1
83
PA4_OC4_OC1
0
Squelch detect input
84
PA5_OC3_OC1
0
Channel activity input
85
PA6_OC2_OC1
0
86
PA7_PA1_OC1
0
87
VSSR
GND
88
VDDR
3.23
89
ECLK (NU)
1.60
90
EXTAL
1.70
Clock from U451-28
91
XTAL
1.40
Not used
92
VDDSYN
0
93
XFC (NU)
0
94
RESET
3.20
95
LVOUT
0
96
IRQ
3.20
97
PD0_RXD
3.23
98
PD1_TXD
1.9
99
PD2_MISO
0
100
PD3_MOSI
3.23
1
Chip select
3.23
2
Serial data out
3
Write protect
3.23
4
Vss
GND
5
Serial data in
3.23
6
Serial clock
7
Hold
3.23
8
Vcc
3.23
1
A11
3.06
2
A9
3.08
3
A8
3.05
4
A13
0.13
5
A14
0.31
6
NC
3.17
7
EN_WE
3.21
8
Vcc
3.23
9
RESET
3.20
U402
EEPROM
U404
Flash ROM
November 24, 2003
Pin Function
DC Voltage
Comments (Condition)
3.00
From U320
From U401-3
0
0
From U401-4
HKLN4216A
UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
10-13
Table 10-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U404
Flash ROM
10
A16
3.17
11
A15
0.30
12
A12
0.22
13
A7
3.03
14
A6
3.08
15
A5
3.06
16
A4
0
17
A3
0.24
18
A2
3.08
19
A1
3.05
20
A0
3.05
21
D0
0.69
22
D1
0.94
23
D2
1.08
24
GND
GND
25
D3
0.78
26
D4
0.59
27
D5
0.66
28
D6
0.67
29
D7
0.75
30
EN_CE
3.01
31
A10
0.16
32
EN_OE
1
VDD for analog circuits
3.00
2
DISC audio input
1.34
3
Ground for analog circuits
GND
4
DACU output
0
5
DACR output
0
6
DACG output
2.38 (typ)
7
VOX peak detector output
2.91
8
PLCAP for DC integrator
0.40
9
SQIN
0.01
10
Universal audio input/output
11
VDD for DACs
12
SQCAP
0
13
GCB2 general purpose output
0
U451
ASFIC_CMP
HKLN4216A
Pin Function
DC Voltage
0
Comments (Condition)
From U401-38
From U401-86
From U510
Power set (TX mode)
0
4.95
Audio PA_EN (unsquelched)
November 24, 2003
10-14
UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
Table 10-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U451
ASFIC_CMP
14
GCB1 general purpose output
0
15
GCB0 general purpose output
3.00
16
Squelch channel activity output
0
To U401-84
17
Squelch detect digital output
0
To U401-83
18
PL/low speed data I/O
1.50
19
High speed data I/O
3.00
20
Chip select
3.23
21
Serial clock input
0
22
Serial data input
3.23
23
Ground for clock synthesizer
GND
24
Loop filter cap for clock syn
0.74
25
PLCAP2 for LS integrator
1.17
26
Not used
27
Vdd for clock synthesizer
3.00
28
Clock synthesizer output
1.70
29
1200 Hz ref for MDC decode
3.00
30
GNDDO
GND
31
Ground for digital circuits
GND
32
Vdd for analog switches
4.96
33
Vdd for digital circuits
3.00
34
16.8 MHz master clock input
1.54
35
GCB3 general purpose output
3.00
36
TX audio return from option
0
37
GCB4 general purpose output
0
38
GCB5 general purpose output
0
39
RX audio send to option
1.48
40
Modulation output
1.50
41
RX audio out to power amp
1.51
42
Flat TX audio return from option
0.20
43
RX audio return to option
1.50
44
Flat TX audio send to option
1.50
45
Vdd for audio path I/O filters
3.00
46
Mic audio input
1.50
47
Ground for audio path I/O filters
GND
48
Ext mic audio input (not used)
November 24, 2003
Pin Function
DC Voltage
Comments (Condition)
BW select (25 kHz mode)
From U401-2
0
Internal MIC enable
To U201-10
0
HKLN4216A
UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
10-15
Table 10-4. Troubleshooting Table for Board and IC Signals (Continued)
IC Designator
Pin
U480
Dual Opamp
1
Unit 1 output
2.48
2
Unit 1 (-) input
2.48
3
Unit 1 (+) input
2.46
4
Ground
GND
5
Unit 2 (+) input
0.28
6
Unit 2 (-) input
0.29
7
Unit 2 output
8
Vcc
4.96
1
Enable/shutdown
0.12
(Unsquelched)
2
Bias reference
3.26
(Unsquelched)
3
(+) input
3.26
(Unsquelched)
4
(-) input
3.27
(Unsquelched)
5
(-) output
3.25
(Unsquelched)
6
Vcc
7.48
(Unsquelched)
7
Ground
GND
8
(+) output
3.29
1
Unit 1 output
1.75
2
Unit 1 (-) input
1.56
3
Unit 1 (+) input
1.55
4
Ground
GND
5
Unit 2 (+) input
1.55
6
Unit 2 (-) input
1.56
7
Unit 2 output
1.38
8
Vcc
4.96
U490
Audio Power Amp
U510
Dual Opamp
Pin Function
DC Voltage
Comments (Condition)
0
(Unsquelched)
1. All voltages are measured with a high-impedance digital voltmeter and expressed in volts DC relative to ground (0V).
2. Voltages are measured with a DC input voltage of 7.50 + .02 volts DC applied to the battery connector (J301).
3. All voltages are measured in the squelched receive mode, unless otherwise indicated.
4. Voltages are identical for VHF and UHF models unless otherwise indicated.
HKLN4216A
November 24, 2003
10-16
UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
Notes:
November 24, 2003
HKLN4216A
Chapter 11 UHF Schematic Diagrams, Overlays, and
Parts Lists
11.1 Introduction
This section provides schematic diagrams, overlays, and parts lists for the radio circuit boards and
interface connections.
11.1.1 Notes For All Schematics and Circuit Boards
* Component is frequency sensitive. Refer to the Electrical Parts List for value and usage.
1. Unless otherwise stated, resistance values are in ohms (K = 1000), capacitance values are in
picofarads (pF) or microfarads (µF), and inductance values are in nanohenries (nH) or microhenries (µH).
2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multimeter or equivalent. If the board has been removed from the chassis, the transmitter module
mounting screws may be used for ground connection. (Note: The antenna nut bracket is not
connected to ground.) Operating mode dependent voltages are followed by (RX) for receive
mode, (TX) for transmit mode, (UNSQ) for unsquelched mode, etc.
3. RF voltages on VHF models are measured with a Fluke model 85 RF probe. The indicated
voltages expressed in mV (RF) are DC level readings which correspond approximately 1:1 to
the RF voltage level in mV rms. RF voltages in the Receiver Front End and Receiver Back
End circuits are measured with an on-channel 100 mV (-7 dBm) RF signal applied to the
antenna jack J140.
4. RF voltages on UHF models are measured both with a high-impedance RF voltmeter having
a bandwidth in excess of 500 MHz (levels are expressed in dBm) and with a Fluke model 85
RF probe [levels are expressed in mV (RF)]. These indicated voltages are DC level readings
which correspond approximately 1:1 to the RF voltage level in mV rms, and are only approximate for UHF frequency measurements. RF voltages in the Receiver Front End and Receiver
Back End circuits are measured with an on-channel 100 mV (-7 dBm) RF signal applied to the
antenna jack J140.
5. Audio voltages are measured with a high-impedance AC rms voltmeter. The indicated voltages are expressed in mV rms. Receive mode voltages are followed by (RX) and are measured with an on-channel signal with 1 kHz modulation at 60% deviation (3 kHz for 25 kHz
channels, or 1.5 kHz for 12.5 kHz channels). Transmit mode voltages are followed by (TX)
and are measured with a 1 kHz, 10 mV rms signal present at the external microphone input
(accessory connector J471 pin 4 hot and pin 7 ground).
6. Reference Designators are assigned in the following manner:
Ref. No. Series
Circuit Block
1-99
RF Front End
100-149
Transmitter RF Stages
150-200
Transmitter Power Control
201-250
Frequency Synthesizer
251-300
VCO
11-2
UHF Schematic Diagrams, Overlays, and Parts Lists: Introduction
Ref. No. Series
Circuit Block
301-400
DC Regulation
401-450
Microprocessor
451-550
Audio
7. Circuit Block Interconnection Legend:
Name
November 24, 2003
Description
USWB+
Unswitched Battery Voltage (always on)
5V
5 volts (regulated)
5R
5 volts in RX mode only
5T
5 volts in TX mode only
RESET
Low-line reset signal from U320 to uP
D3_3V
Digital 3.3 volts (regulated)
3V
Analog 3 volts (regulated)
TX_ENA
Transmit enable signal from uP to transmitter
PWR_SET
DC voltage from ASFIC to TX power control
DEMOD
RX audio from backend to ASFIC
BW_SEL
Backend filter BW select from ASFIC
RSSI
RX signal strength indication from IFIC to uP
IF_IN/OUT
44.85 MHz from 1st mixer to high IF filter
RF_IN/OUT
RX signal from antenna switch to front end
MOD OUT/IN
TX modulation from ASFIC to synthesizer
16_8_MHZ
Ref osc signal from synthesizer to ASFIC
SYNTH_CS
Synthesizer chip select from uP
SPI_CLK
Serial clock from uP
SPI_DATA_OUT
Serial data from uP
LOCK
Lock detect indication from synth to uP
PRESC
VCO freq feedback from VCOBIC to synth
V_STEER
Steering line voltage from synth to VCO's
V_SF
Super-filtered 4.5 volts from synth to VCOBIC
VCO_MOD
TX modulation from ASFIC to synthesizer
TRB
TX/RX control from synth to VCOBIC
RX_INJ
Buffered RX VCO output to RX 1st mixer
TX_INJ
TX VCO output to transmitter input
HKLN4216A
UHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic
11-3
11.1.2 Six Layer Circuit Board
SIDE 1
LAYER 1 (L1)
LAYER 2 (L2)
LAYER 3 (L3)
LAYER 4 (L4)
LAYER 5 (L5)
LAYER 6 (L6)
INNER LAYERS
SIDE 2
Figure 11-1. Six-Layer Circuit Board: Copper Steps in Layer Sequence
11.2 Speaker and Microphone Schematic
MK1
1
MATES WITH J470 ON
RADIO BOARD
2
SP1
1
MATES WITH J491 ON
RADIO BOARD
2
Figure 11-2. Speaker and Microphone Schematic
11.2.1 Speaker and Microphone Parts List
Reference
Designator
HKLN4216A
Motorola Part
No.
Description
MK1
5085880L01
Microphone, electret
SP1
5085738Z08
Speaker assembly with
connector
November 24, 2003
11-4
UHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic
Notes:
November 24, 2003
HKLN4216A
UHF 403-440 MHz PCB 8486635Z03-O Schematic Diagrams, Overlays, and Parts Lists
11-5
Chapter 11 UHF 403-440 MHz PCB 8486635Z03-O Schematic Diagrams, Overlays, and Parts Lists
UHF R1
USWB +
5V
5T
5R
3V
USWB+
5T
5R
3V
5V
5R
5V
5R
USWB
+
USWB+ 5V
5T
TX_EN A
5T
TX_ENA
PWR_SET
TX_UHF_R1
PWR_SET
CONTROLLER
DEMOD
DEMOD
BW_SEL
BW_SEL
RX_BE
RX_FE_UHF_R1
IF_IN
IF_OUT
RX_IN
TX_INJ
RSSI
RSSI
RX_OUT
RX_INJ
5V
5V
MOD_OUT
MOD_IN
16_8_MHZ
16_8_MHZ
3V
3V
PRESC
SYNTH_UHF_R1
SYNTH_CS
SPI_CLK
SPI_DATA_OUT
LOCK
5R
3V
5R
3V
PRESC
VCO_UHF_R1
V_STEER
RX_INJ
V_STEER
SYNTH_CS
SPI_CLK
SPI_DATA_OUT
LOCK
V_SF
VCO_MOD
V_SF
VCO_MOD
TX_INJ
TRB
TRB
Figure 11-3. UHF (403-440 MHz) Radio Circuit Block Diagram
HKLN4216A
November 24, 2003
11-6
UHF 403-440 MHz Schematic Diagrams, Overlays, and Parts Lists
Chapter 11 UHF 403-440 MHz Schematic Diagrams, Overlays, and Parts Lists
5R
FE_5R
Q22
C26
R21
75
R20
5.6K
390pF
UMT1
UHF R1 Front End
4
1
2
SH1
SHIELD
5
C20
C25
6
390pF
3
R22
5.6K
C523
0.55pF
C2
C3
1.8pF
C5
5.6%
0
C6
1.8pF
C8
RX_IN
C1
18pF
1%
L1
9.85nH
2%
15pF
1%
C4
5.6%
L2
9.85nH
2%
C12
10pF
1.0%
NU
0
C7
L3
9.85nH
2%
NU
C28
C27
9.1pF
1.1%
15pF
1%
L31
9.85nH
2%
C32
7.5pF
1.3%
C31
9.1pF
1.1%
C30
22pF
1%
C46
C23
R24
390pF
1.2K
NU
L32
9.85nH
2%
3
1
Q21
R25
5.6K
2
L52
3.3pF
3.0%
C522
10%
L21
27nH
13pF
1%
C35
C47
18pF
1%
1%
0.79V
C521
4.2V
FE_IF_OUT
IF_OUT
680nH
2.2pF
4.5%
R51
51
BFS505
C51
L51
150nH
82pF
0.6pF
C34
6.2pF
1.6%
C33
C21
390pF
C10
2
1
C11
20pF
1%
3
C524
C29
8.2pF
1.2%
C9
18pF
CR1
L55
18nH
0.1uF
5.5%
IF1
1
1
390pF
C99
R23
27K
SH40
SHIELD
NU
C37
6.2pF
1.6%
1%
12pF
C36
L33
9.85nH
16pF
2%
1%
C38
T41
RF BALUN
C48
1%
0
16pF
C39
L34
12pF
9.85nH
1%
2%
4
C13
3
C14
2.4pF
2
C49
1
6
NU
NC
5 NC
2.4pF
4.2%
4.2%
1
IO1
T42
IF BALUN
3
4
FE_RF_INJ
C42
L40
10pF
1.0%
27nH
RX_INJ
C41
15pF
1%
L41
27nH
C43
30pF
1%
3
IO3
IO4
4
IO2
2
C44
10pF
1.0%
6
C45
22pF
1%
R40
1K
1
NC
5 NC
2
CR41
HSMS2829
1
TP1
1
TP2
Figure 11-4. UHF (403-440 MHz) PCB 8486635Z03-O Receiver Front End Schematic Diagram
November 24, 2003
HKLN4216A
UHF 403-440 MHz PCB 8486635Z03-O Schematic Diagrams, Overlays, and Parts Lists
11-7
RX Back End (Overtone)
7
1
C68
U52-1
TC7W04F
FL53
CFWC455E
R65
39K
0.1uF
1
IN
R66
20K
OUT 2
0V for 12.5kHz
C69
R63
39K
D51
0.1uF
2
1 IN
1
SH50
SHIELD
8
U52-4
PWR_GND
3
5
SH52
SHIELD
1
GND
3
2
C74
R62
3.3K
NC
VCC
1
OUT 2
R67
20K
GND1
U52-3
TC7W04F
D52
R64
20K
FL54
CFWC455G
3
5V
4
2
6
R60
2.4K
1
3
4
1 IN
4
C63
C62
FL52
FLTR
9180468V04
0.1uF
0.1uF
OU T 2
C64
GND
C66
C65
0.1uF
0.1uF
47pF
5V
C67
C61
0.1uF
R72
390
0.1uF
3
3
Q70
1
5V
C91
0.1uF
10uF
1 RFIN
2 RFIN_DEC
51
C90
C92
0.1uF
R53
FL51
MXF45
44.85MHz
0.1uF
R54
5.1K
OUT 6
3 IN
C52
18pF
C53
9.1pF
1.1%
0.74V
120pF
C93
GND2
2 CC1
5 CC2
GND1
IF_IN
1
3.6pF
NU
C57
3.9pF
C59
0.1uF
2.7pF
3
L53
IF_IN
C58
3.05V
33K
C55
R52
12K
1
Q51
CR51
3
L54
1.2uH
2%
SA616
LIMOUT 11
GND
15
C70
R73
1.8K
130pF
R74
1.2K
Y70
45B02
455KHz
1
R57
4.7K
2
3
C81
2
C80
R80
5.1K
33pF
1%
PBR941
1
U51
C71
0.1uF
C60
0.1uF
2
VCC
9 RSSI_FEED
6
2
10 QUADIN
R90
LIMIN 14
LIM_DEC1 13
LIM_DEC2 12
5V
5 RSSIOUT
R55
330
0.1uF
7 AUDIO_FEED
8 AUDIOOU T
C56
IFAMP_DEC1
IFAMPI N
IFAMP_DEC2
IFAMPOUT
1.6K
3 OSCOUT
4 OSCIN
3.39V
5V
19
18
17
16
MMBT3904
R91
MIXOUT 20
IF_5V
47pF
GND2
BW_SE L
3
TC7W04F
5V for 25kHz
GND2
U52-2
R61
100K
IF_BAND_SEL
GND1
5V
R75
IF_RSSI
2.1V When -47 dBm @ antenna
RSSI
22pF
1%
C72
12K
0.1uF
4
R81
1K
C82
Y51
TSS2_44_395MHZ
44.395MHz
3 OU T
L81
1uH
33pF
1%
R82
NU
IN
GND1 GND
4
2
1
R76
12K
1%
R77
R78
8.2K
1%
680
IF_DEMOD
1.5V
DEMOD
C73
4700pF
Figure 11-5. UHF (403-440 MHz) Receiver Back End Schematic Diagram
HKLN4216A
November 24, 2003
11-8
UHF 403-440 MHz Schematic Diagrams, Overlays, and Parts Lists
UHF R1 Synthesizer
FN_V_SF
4.5V
R247
22K
C231
C232
C233
1000pF
0.1uF
4.7uF
SH200
SHIELD
LOCK: 3V
UNLOCK: 0V
NC
NC
NC
31 NC3
29 NC2
17 NC1
NC
NC
42
18
NC
32 PREI
N
27 SFBASE
26 SFCAP
PRESC
100pF
C240
1.3pF
39
40
C230
2.2uF
NC
NC
21
35
30
7
10
FN_DATA
SPI_DATA_OUT
CCOMP
REFSEL
FN_SYNTH_CS
FN_CLK
1
1
LOCK
C204
25
16
28
46
4
45
43
470pF
NC
NC
NC
NC
TX: 3V
FN_TRB
C243
R245 3.2V to 4.5V FN_V_STEER
V_STEER
1.5K
C244
R243
820
0.1uF
RX: 0V
NC
.01uF
0888600M25
TRB
NC
NC
R244
51
NC
NC
1
FN_VCO_MOD
MODOUT 41
19
FREFOUT
XTAL2 24
XTAL1 23
5
34
20
36
13
47
SYNTH_CS
SH201
SHIELD
FN_LOCK
TEST2 38
TEST1 37
U201
3
BIAS2
63A27 AUX4 2
BIAS1
AUX3
AUX2 1
VBPASS
AUX1 48
PVREF
VMULT4 11
VMULT3 12
SFIN
VMULT2 14
DATA
MODIN
VMULT1 15
9 CEX
8
CLK
FN_MOD
MOD_IN
WARP
INDMULT
SFOUT
ADAPTSW
LOCK
IADAPT
IOUT
PD_VDD
PRE_VDD
AVDD
DVDD
VRO
VCP
C241
FN_PRESC
DGND
AGND
PRE_GND
PD_GND
6
22
33
44
R230
24K
V_SF
TP240
C245
VCO_MOD
1uF
C202
C201
62pF
1%
220pF
TP200
1
R220
22
R205
100
R246
16_8_MHZ
5V
R202
150K
SPI_CLK
C220
FN_16_8
100K
R221
22
22pF
C205
C221
NU
C208
C209
C210
C211
470pF 470pF
470pF
470pF
0.1uF
FN_3V
3V
C201
220pF
NU
C202
62pF
NU
C203
2.7pF
NU
C206
NU
0.01uF
R202
150k
47k
R206
NU
100
D201
1SV232
NU
Y201
14R06
NU
Y202
NU
45J68
NU
NU
C212
C213
C214
Y201
14R06
2.2uF
.01uF
1000pF
16.8MHz
3 OUT
GND1
TCXO
R206
390nH
Reference Oscillator
Crystal
C206
L211
3V
Y202
45J68
NU
0V
4
VCC
4
IN
GND
C207
2
.01uF
3 K3
2 K2
1 K1
C222
3V
1
3 OUT
VCON
16.8MHz
GND
2
.01uF
0V
4
A3 5
A2 6
A1
D220
C223
R223
100
C218
C219
2.2uF
0.1uF
.01uF
1
C224
C203
NC
A3 4
A2 5
A1 6
NC 3
K3
2 K2
1 K1
.01uF
D201
2.7pF
3.7%
D221
R227
39K
C228
C227
C226
C225
0.1uF
1000pF
10uF
10uF
5V
FN_5V
R212
5V
0
C215
C216
C217
2.2uF
0.1uF
1000pF
Figure 11-6. UHF (403-440 MHz) PCB 8486635Z03-O Synthesizer Schematic Diagram
November 24, 2003
HKLN4216A
UHF 403-440 MHz PCB 8486635Z03-O Schematic Diagrams, Overlays, and Parts Lists
11-9
UHF R1 VCO
V_SF
VCO_VSF
V_SF
R273
L270
4.5V
220nH
C270
390pF
SH250
SHIELD
SH251
SHIELD
L272
220nH
SH253
SHIELD
0
330
C274
VCO_3V
R277
0.1uF
3V
C273
1
C271
R274
33
390pF
27nH
D251
C254
7.5pF
1.3%
VCO_V_STEER L251
V_STEER
220nH
3.2V to 9.5V
C251
150pF
0888600M03
1.8%
L254
12.5nH
2%
C256
3.6pF
2.8%
TX_IADJ
RX_IADJ
SUPER_FLTR
COLL_RFIN
RX_BASE
RX_EMITTER
TX_BASE
TX_EMITTER
FLIP_IN
TRB_IN
33
R254
100
10pF
1.0%
L255
220nH
NU
L262
390pF
0.1uF
L282
15nH
5pF
2%
C264
3.3pF
3.0%
D261
C290
7
RX_SWITCH
TX_SWITCH 13
PRESC_OU T
V_SF
TX_INJ
L291
6.8nH
NC
NC
0.5pF
20%
VCO_5R
5R
U251
R261
C267
22K
6.8pF
1.5%
VCO_MOD
D262
1SV229
RX: 0V
13pF
L281
33nH
4 50U5
C284
R281
8.2K
390pF
C281
R282
390pF
910
1
C282 VCO_RX_INJ
RX_INJ
C266
R262
6.8K
C291
12
C286
R285
8.2pF
0
L283
NU
3.3pF
3.0%
VCO_TX_INJ
6.8pF
3.0%
L264
12.5nH
2% C268
L292
15nH
R284
330
TX_OUT 10
RX_OUT 8
C265
3.3pF
C263
27nH
VCO_MOD
R253
C257
C252
R272
5.6K
1
2
3
4
5
6
16
15
20
19
C255
5.6pF
C253
6.2pF
1.6%
L271
NU
R271
4.7K
9 GND_FLAG
11 GND_BUFFERS
17 GND_LOGIC
L252
.01uF
14
VCC_BUFFERS
18
VCC_LOGIC
1
C285
C272
0.1uF
1
C292
3
Q280
2
R280
4.7K
3.6pF
BFS540
R283
130
C283
390pF
V_SF
R263
R276
L276
33
NU
27nH
VCO_PRESC
PRESC
C276
R264
100
3.9pF
L265
220nH
TX: 3V
VCO_TRB
R275
TRB
100
C275
390pF
Figure 11-7. UHF (403-440 MHz) Voltage Controlled Oscillator Schematic Diagram
HKLN4216A
November 24, 2003
11-10
UHF 403-440 MHz Schematic Diagrams, Overlays, and Parts Lists
UHF R1 Tx
PA_USWB+
USWB+
Q171
PA_TX_ENA
TX_ENA
C170
4
390pF
6
5
Q170
EMB10
2
3
1
C525
390pF
C157
C154
0.1uF
390pF
R120
150
R152
R158
R159
C151
5.1K
0
390pF
U150-2
C156
Q150
LM2904
3
8
6
.01uF
R157
2
1
2.2K
3
U150-1
C159
4
LM2904
PA_PWR_SET
4
2
C152
1
R156
330
390pF
390pF
C153
C121
57R01
R154
R151
100K
1%
39
5
8
TP150
U151
390pF
7
1
390pF
R121
150
100K
1%
R153
100K
1%
C150
C172
R155
100K
1%
L120
220nH
390pF
R150
0.1
J140
0.47uF
C137
4 S1
220pF
R162
3 S2
PWR_SET
10K
2 G1
5 G2
C158
390pF
C113
390pF
PA_5T
R110
510
SH100
SHIELD
C109
C114
0.1uF
390pF
R106
4.7K
R107
NU
L100
220nH
390pF
C112
R111
1.8K
220nH
C171
L101
220nH
390pF
C102
0.1uF
390pF
30nH
PA_TX_INJ
R101
C100
TX_IN J
5.6
R100
820
390pF
R102
820
R105
2.7K
L102
8.7nH
C104
10pF
BFG540W
2
390pF
L130
C105
C107
1pF
3pF
390pF
1
2
3
VG G
VDD
RFIN
U110
RFOUT
RA07M4047M_UHF
GND
Q100
1
1uF
3.9V
MM3Z3V9T1
4813830A86
C106
L103
0.1uF
L140
0.1uF
1 T1
6 T2
VR110
1
C103
C116
L110
5T
C111
C115
5
C117
4
390pF
D120
MA4PH261
L131
22.69nH
C132
27.42nH
C134
22.69nH
C136
10pF
8.2pF
4.3pF
C124
L121
C122
D121
BAR63-02W
4880973Z02
NC
C141
NU
M140
ANTENNA_NUT
1
TAB1
TAB3 3
2 TAB2
TAB4 4
NC
NC
L141
22.69nH
PA_RX_OU T
RX_OUT
18nH
9.1pF
L132
C123
220pF
5.6pF
4
R103
3K
C120
3
NU
R104
18
C101
C108
0.1uF
390pF
Figure 11-8. UHF (403-440 MHz) PCB 8486635Z03-O Transmitter and Power Control Schematic Diagram
November 24, 2003
HKLN4216A
UHF 403-440 MHz PCB 8486635Z03-O Schematic Diagrams, Overlays, and Parts Lists
11-11
5V +3 V
3V
SW_B +
SW_B
5V
Controller
VS_AUDIO_SEL
CNTL_PWR_SET
OPT_MI C
PWR_SET
OPT_TX_AUD_FLAT_RETURN
OPT_TX_AUD_RETURN
SW_B +
25
OPT_RX_AUD_SEND_UNMUTED
24
23
OPT_RX_AUD_RETURN
22
21
VS_GAIN_SEL
10
9
C500
8
7
1000pF
6
5
4
C503
1000pF
BATT_CHARGE
RESET
SC I
uP_CL K
ASFIC_CS
F1200
BOOT_ENA
EXT_MIC_PTT
16_8_MHZ
C501
CNTL_SPI_CLK
1uF
SPI_CLK
CNTL_SPI_DATA_OUT
SPI_DATA_OUT
R502
100
3
2
1
30
29
R504
32
31
100
CNTL_SYNTH_CS
SYNTH_CS
R501
100
CNTL_LOCK
LOCK
J460-1
CONNECTOR
ACCESSORY/KEYPA D
CNTL_RSSI
R505
TP40 3
100
C406
RSSI
CNTL_TX_ENA
TX_ENA
TP40 4
150pF
+
SW_B
USWB
BATT_DETECT
SCI
RESET
uP_CLK
ASFIC_CS
F120 0
BOOT_ENA
EXT_MIC_PTT
LSIO
HSIO
VOX
CH_ACT
SQ_DET
SPI_DATA_IN
D3_3V
DISPL_COM_DATA_SEL
VS_RAC
OPT_DATA_READY
SPI_CLK
3V
SW_B +
+
3V
SPI_DATA_OUT
NC
D3_3 V
5V
5V
SW_B +
1000pF
R503 10 0
C50 4
C403 150pF
BK1005HM47
HSIO
11
LSI O
12
E500
1
VOX
13
MOD_OUT
16_8_MHZ
SQ_DET
15
14
BW_SEL
CNTL_MOD_OU T
MOD_OUT
CNTL_16_8_MHZ
CH_ACT
16
3V
SPI_DATA_OUT
19
17
SPI_CLK
20
18
C405 150pF
D3_3 V
26
BW_SEL
AUDI O
OPT_RX_AUD_SEND_DETECTO R
27
DEMOD
CNTL_BW_SEL
OPT_TX_AUD_SEND
28
PWR_SET
CNTL_DEMOD
DEMO D
5V
5R
5T
3V D3_3V
CNTL_USWB+
USWB+
CNTL_5V
5V
TP301
CNTL_5R
5R
CNTL_5T
BACKLIGHT
5T
KEYPAD_ROW
CNTL_3V
SYNTH_C S
3V
KEYPAD_COL
1000pF
1000pF
C404
1000pF
C407
C409
1000pF
C408
1000pF
1000pF
C507
1000pF
C40 2
1000pF
C506
C505
S441
SWITCH
1 A1
3 A2
B1 2
OPT_BUTTON_ 2
FREQ_SEL_ 3
B1 2
B2 4
S440
SWITCH
8
PC0
PC1
PC2
C0
C1
9 7
PC3
GND1
GND
1 A1
3 A2
TX_EN A
BATT_CHARGE
5T
3V
5R
5V
D3_3V
RESET
RX_ENA
RX_EN A
VOLUME
VOLUME
ON_OFF
ON_OF F
OPT_BUTTON_ 1
B1 2
B2 4
S443
SWITCH
RSSI
PTT
B2 4
S442
SWITCH
1 A1
3 A2
MICROPROCESSOR
SWB+
OPT_EN A
VS_CS
VS_IN T
LOCK
USWB +
DISP_EN A
1
2
4
C0
C1
FREQ_SEL_ 0
DC_REGULATION
TX_EN A
FREQ_SEL_ 1
FREQ_SEL_ 2
Figure 11-9. UHF (403-440 MHz) Controller Interconnect Schematic Diagram
HKLN4216A
November 24, 2003
11-12
UHF 403-440 MHz Schematic Diagrams, Overlays, and Parts Lists
Microprocessor
D3_3 V
D3_3V
R416
20K
R410
10K
D3_3V
C410
C411
C412
10uF
0.1uF
1000pF
C413
R412
100K
0.1uF
8
6
1
3
7
5
TP405
VCC
SCK
CS
2
WP
SO
HOLD
SI VSS
4
TP402
C418
R417
10K
0.1uF
Q410
1
1
R411
6
1
SC I
820
SH401
SHIELD
SH400
SHIELD
C419
2
1000pF
3
U402
1
R419
4.7K
4
1
X25128-2.7
EEPROM
1
TP401
LSI O
CH_ACT
SPI_DATA_IN
SQ_DET
SPI_DATA_OUT
HSI O
OPT_DATA_READY
SPI_CLK
uP_CLK
C400
R400
NU
D3_3 V
R418
NU
100K
C414
C417
C415
DISPL_COM_DATA_SEL
C416
0.1uF
1000p F 1000pF
1
R445
4.7K
2
D(0)
D(1)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
ON_OFF
30
31
32
33
34
35
36
37
PC0_DATA0
PC1_DATA1
PC2_DATA2
PC3_DATA3
PC4_DATA4
PC5_DATA5
PC6_DATA6
PC7_DATA7
A(18:0)
C430
C431
0.1uF
1000pF
D3_3V
R433
100K
21
22
23
25
26
27
28
29
D0
D1 U404 A0
D2 FLASH A1
D3
A2
A3
D4
A4
D5
A5
D6
A6
D7
A7
6
A8
NC
A9
A10
A11
A12
A13
A14
A15
A16
GND
R431
NU
20
19
18
17
16
15
14
13
3
2
31
1
12
4
5
11
10
C432
C433
0.1uF
1000pF
0
VDD
VDDR
VDDL
AVDD
LVOUT 95
VRL 68
VRH 69
EXTAL 90
XTAL 91
86
85
84
83
82
81
80
79
12
88
39
59
PTT
EXT_MIC_PTT
FREQ_SEL_0
FREQ_SEL_1
VS_RAC
FREQ_SEL_2
FREQ_SEL_3
OPT_BUTTON_1
OPT_BUTTON_2
5V
1
28
A(0)
A(1)
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
A(10)
A(11)
A(12)
A(13)
A(14)
A(15)
A(16)
R430
100K
D(0) 11
D(1) 12
D(2) 13
D(3) 15
D(4) 16
D(5) 17
D(6) 18
D(7) 19
VDD A0
A1
U403 A2
A3
NU A4
SRAM A5
A6
D1
A7
D2
A8
D3
A9
D4
A10
D5
D6
A11
D7
A12
A13
D8
A14
A(0)
A(1)
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
A(10)
A(11)
A(12)
A(13)
A(14)
4
6
C445
C440
C441
C442
C443
C444
C401
.01uF
.01uF
.01uF
.01uF
.01uF
.01uF
.01uF
0.1uF
R440 4.7K
.01uF
200K 1%
R421
100K
1%
C422
D424
3V
.01uF
RED LED
D440
BRPY1204W
20
CS
22
OE
27
WE
VSS
14
A(18)
NU
0.1uF
VOLUME
3
R442
220
SW_B+
C447
R441 4.7K
2
Q440-2
C420
Q440-1
5
10
9
8
7
6
5
4
3
25
24
21
23
2
26
1
C446
SW_B +
A(17)
R434
PE0_AN0
PE1_AN1
PE2_AN2
PE3_AN3
PE4_AN4
PE5_AN5
PE6_AN6
PE7_AN7
67
66
65
64
63
62
61
60
BOOT_ENA
R420
24
R432
NC NC
71
72
73
74
75
76
77
78
D414
D3_3V
8
VCC
30
EN_CE
32
EN_OE
7
EN_WE
RESET 9
AT49LV001N_70VI
D(0)
D(1)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
U401
MC68HC11FL0
A(7)
A(6)
A(5)
A(4)
A(3)
A(2)
A(1)
A(0)
D(7:0)
D3_3 V
VDDSYN 92
XFC 93
PH0_PW 1
PH1_PW 2
PH2_PW 3
PH3_PW 4
PH4_CSI O
PH5_CSGP1
PH6_CSGP2
PH7_CSPROG
22
23
24
25
26
27
28
29
DISP_ENA
47
46
45
44
43
42
41
38
PJ0_CSGP3
PJ1_CSGP4
PJ2
PJ3
PJ4
PJ5
PJ6
PJ7
NC
VSS
VSSR
VSSL
AVSS
NC
RESET
89
96 NC
48
94
4
58
57
13
87
40
70
Q402
3
ECLK
IRQ
XIRQ
RESET
PG7_R_W
MODA_LIR
MODB_VSTBY
PI 7
PI6
PI5
PI4
PI 3
PI 2
PI1
PI0
R446
10K
49
50
51
52
53
54
55
56
1
PG0_XA13
PG1_XA14
PG2_XA15
PG3_XA16
PG4_XA17
PG5_XA18
PG6_AS
PB5_ADDR13
PB4_ADDR12
PB3_ADDR11
PB2_ADDR10
PB1_ADDR9
PBO_ADDR8
Q403
6
16
20
19
17
18
5
1000pF
NC NC
A(13)15
A(12) 21
A(11) 9
A(10) 11
A(9) 10
A(8) 14
BACKLIGH T
2
PA7_PA1_OC1
PA6_OC2_OC1
PA5_OC3_OC1
PA4_OC4_OC1
PA3_IC4_OC5_OC1
PA2_IC1
PA1_IC2
PA0_IC3
SW_B +
3
PF7_ADDR7
PF6_ADDR6
PF5_ADDR5
PF4_ADDR4
PF3_ADDR3
PF2_ADDR2
PF1_ADDR1
PFO_ADDR0
NC
A(14)
A(15)
A(16)
A(17)
A(18)
R414
33K
R415
33K
F1200
7
PB7_ADDR15
8
PB6_ADDR14
SYNTH_CS
PD6_LVIN 3
PD5_SS 2
PD4_SCK 1
PD3_MOSI 100
PD2_MISO 99
PD1_TXD 98
PD0_RXD 97
NC
ASFIC_CS
R413
100K
R443
120
RB520S-30
R424
D3_3V
200K 1%
GREEN LED
C421
R422
100K
R423
100K
.01uF
BATT_DETECT
R425
100K
1%
RSSI
VO X
KEYPAD_CO L
KEYPAD_RO W
LOCK
VS_INT
VS_CS
OPT_ENA
TX_ENA
RX_ENA
Figure 11-10. UHF (403-440 MHz) PCB 8486635Z03-O Microprocessor Circuitry Schematic Diagram
November 24, 2003
HKLN4216A
UHF 403-440 MHz PCB 8486635Z03-O Schematic Diagrams, Overlays, and Parts Lists
11-13
R516
R523
NU
C512
10K
C514
6.8pF
R522
16pF
100K
R514
R512 150K
LM2904
R511
2
100K
3
DEMOD
Q520
8
1
R513
R515
7
1
5
6
C460
0.1uF
VR471
C511
C513
R518
220K
220pF
220pF
R519
100K
C519
4
R470
OPT_RX_AUD_SEND_DETECTO R
5
4
5V_A
8
IMX1
IMX1
C518
6
3
Audio
Q520
5V_A
100K
U510-1
4
2
U510-2
0.1uF
2.2K
OPT_RX_AUD_RETURN
LM2904
R521
NU
R520
100K
3V_A
NC
OPT_RX_AUD_SEND_UNMUTED
R480
0
OPT_TX_AUD_FLAT_RETURN
R517
OPT_TX_AUD_SEND
1uF
OPT_TX_AUD_RETURN
VS_AUDIO_SEL
VS_GAIN_SEL
3V_A
PWR_SET
VOX
3V_A
0.1uF
C452
0.1uF
R462
24K
0.1uF
4.7uF
10 V
SQCAP
VDDDAC
UIO
SQIN
PLCAP
VOX
DACG
DACR
DACU
GND A
DISC
VDDA
12
11
10
9
8
7
6
5
4
3
2
1
C455
.022uF
CH_ACT
13
14
15
16
17
18
19
20
21
22
23
24
SQ_DET
LSIO
HSIO
ASFIC_CS
GCB2
GCB1
GCB0
CHACT
SQDET
LSIO
HSIO
CSX
CLK
DATA
GND
SYN
LCAP
U451
30C53
C456
SPI_DATA_OUT
0.1uF
3V
3V_A
R451
47K
Not Placed
Not Placed
R517
0
Not Placed
Q471
3
6
C465
C471
0.1uF
1000pF
2.2uF
1
R476
100K
2
4
5
Q470
2
3
D470
2.2K
6
3
A_MOD_OUT
L471
390nH
C474
C473
150pF
150pF
J471
ACCESSORY
CONNECTOR
5 S4
NC
VR473
20V MMBZ5250B
NC
.022uF
0.1uF
1000pF
1 M1
1
2.2K
C493
3 M3
J470-1
R478
C478
C476
2
J491-1
INTERNAL
SPEAKER
.022uF 150pF
R494 C494
330K
2.2uF
7 S1
2 M2
VR474
MMBZ5250B
20V
C475
VR475
15V MMBZ5245B
SW_B+
6 S3
SCI
NC
NU
C458
BOOT_ENA
4 S2
R479
100K
C466
4
OPT_MIC
EXT_MIC_PTT
MOD_OUT
RESET
0.1u F
BATT_CHARGE
R475
180K
R477
C472
0.1uF
6
1
R255
3.9K
1%
MICROPHONE
CONNECTOR
1
E451
2
16_8_MHZ
BK1005HM471
C459
F1200
0.1uF
uP_CLK
5V_B
C481
.01uF
E452
BK1005HM471
5V
E453
5V_A
2
5V
BK1005HM471
C497
5V_B
C482
.01uF
Not:Placed:NU
3
Q481
Not_Placed:NU 1
0.1uF
R486
100K
Not_Placed:NU
R483
150K
Not_Placed:NU
R487
0
5V_B
8
2
3
C499
82pF
C483
0.1uF
R484
2.2K
1
Not_Placed:NU
4
C484
U480-1
3
R485 100K 1
Q490
R492
0
24K
R490
2.2K
Not_Placed:NU
Not_Placed:NU .033uF
LM2904
Not_Placed:NU
R491
DC Level 0.3 - 0.4 V low
Supply = 7.42
1/2 Supply = 3.22
1
3
2
4
C488
C480
R469
0.1uF
10
3 J491-3
470pF
U490
TDA854
MODE
5
INPOS OUTNEG
SVR OUTPOS 8
INNEG
C479
150pF
6
VCC
GN D
4 J491-4
C489
1
470pF
7
C492
R496
10K
Not_Placed:NU
R497
1MEG
10uF
Q482
Not_Placed:NU
R493 330K
R516
5
Q472
C477
NC
0.1uF
R473
680
4
5V
R474
330
C464
R482 330K
0
24K
Not_Placed:NU
Not Placed
R463
30K
Not_Placed:NU
R515
1200pF
R481 100K
UHF
100k
0.1uF
R464
Not_Placed:NU
VHF
3V_A
C463
0.1uF
2
R471
NC
C457
3V
Not Placed
48 NC
47
46
45
44
43
42
41
40
39
38
37 NC
C462
C467
1
2.2K
25
26
27
28
29
30
31
32
33
34
35
36
SPI_CLK
R513
MICEXT
GNDRC
MICINT
VDDRC
TXSND
RXRTN
AUXTN
AUDIO
MOD
RXSND
GCB5
GCB4
PLCAP2
NC
VDDSYN
SYN
F1200
GNDDO
GNDD
VDDCP
VDDD
CLK168
GCB3
TXRTN
BW_SEL
0.1uF
VR472
D471
3V
C454
5V_A
C453
C461
1000pF
R460
24K
C451
R472
680
C470
5V_B
Not_Placed:NU
2
UMG5
1
5V_B
C490
470pF
R498
U511
2
3
R488
330K
6
C495
UMG5
4
1
6
1uF
D491
47 K
8
7
6
5
C496
1uF
4
U480-2
NC
Not_Placed:NU
R499
270K
Not_Placed:NU
LM2904
Not_Placed:NU
R489
91K
Not_Placed:NU
2
3
4
R495
5.6K
C498
1uF
Figure 11-11. UHF (403-440MHz) Audio Circuitry Schematic Diagram
HKLN4216A
November 24, 2003
11-14
UHF 403-440 MHz Schematic Diagrams, Overlays, and Parts Lists
DC Regulation
USWB+
POS
NEG
DATA
U310
TK71750S
VR301
MMBZ5250B
F301
J301
3A
C301
D301
NC
390pF
20V
C303
C304
33uF
.01uF
1 VIN
5
VOUT
3
4 CTRL
BYPASS
GND
2
C310
.01uF
5V
C311
C312
C313
.018uF
10uF
.01uF
Q311
5R
D3_3V
BATT_CHARGE
C314
VR302
MMBZ5250B
C302
C305
C306
390pF
100pF
.01uF
1200pF
NC
R313
10K
20V
R312
20K
R310
100K
Q313
C315
RX_ENA
1
1200pF
Q312
TP302
TX_ENA
5T
R311
100K
D3_3V
R506
100
1200pF
2
2
VOLUME
1
5
SWB+
6
R508
100K
3
1
R509
100K
RESET
TAB2
TAB1
LOW
R507
100
C316
Q493
S444
SWITCH
3 HIGH 4
C323
R322
100K
7
Q494
R510
1
LP2986
330K
ON_OFF
3
D3_3V
U320
6
2
150pF
NC
NC
4 INPUT OUTPUT 5
8 SHUTDOWN
3 SENSE ERROR 7
6
TAP FEEDBACK 2
GND
4
1
D3_3V
C320
.018uF
R320
330K
1%
C321
C322
10uF
.01uF
R321
200K
1%
U330
TK71730S
C331
1
VIN VOUT 5
3
CTRL
4
BYPASS
GND
2
3V
C334
C333
10uF
.01uF
.01uF
Figure 11-12. UHF (403-440 MHz) PCB 8486635Z03-O DC Regulation Schematic Diagram
November 24, 2003
HKLN4216A
UHF 403-440 MHz PCB 8486635Z03-O Schematic Diagrams, Overlays, and Parts Lists
J2
MAIN BOARD
CONNECTOR
J2-9
J2-16
J2-17
J2-10
J2-1
J2-2
J2-3
J2-4
J2-6
J2-13
J2-14
J2-15
J2-18
J2-19
J2-12
J2-21
J2-22
J2-23
J2-24
J2-25
J2-26
J2-27
J2-5
J2-7
J2-8
J2-2
J2-11
J2-20
9
16
17
10
1
2
3
4
6
13
14
15
18
19
12
21
22
23
24
25
26
27
5
7
8
8
11
20
11-15
J1
DISPLAY MODULE
CONNECTOR
KEYPAD
LEDBL
LEDBL
DATA
CLK
LCD_SEL
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
C1
150pF
C3
150pF
C6
150pF
C8
150pF
DNF
DNF
DNF
DNF
R1
100K
Vddd
R6
100K
Vddd
C2
C4
150pF
0.1uF
R7
R8
R9
R10
13K
22 K
43 K
130K
J2-29 G1
J2-30 G2
9
8
7
6
5
4
3
2
1
J1-9
J1-8
J1-7
J1-6
J1-5
J1-4
J1-3
J1-2
J1-1
LEDBL
GND
GND
GND
DATA
CLK
LCD_SEL
GND
VDDD
G1 J1-10 GND
G2 J1-11 GND
R2
13 K
S18
SWITCH
1
1
2
3
S17
SWITCH
2
1
2
3
S2 2
SWITCH
6
1
2
3
S2 3
SWITCH
5
1
2
3
S2 5
SWITCH
8
1
2
3
S26
SWITCH
9
1
2
3
S2 7
SWITCH
0
1
2
3
COL
ROW
NC
NC
REF
Vddd
Vddd
C5
C7
150pF
DNF
150pF
DNF
STD
LIMITED KEYPAD
C1
NOT PLACED
NOT PLACED
C3
NOT PLACED
NOT PLACED
C6
NOT PLACED
NOT PLACED
C8
NOT PLACED
NOT PLACED
R9
NOT PLACED
R10
NOT PLACED
R2
NOT PLACED
R3
NOT PLACED
R4
NOT PLACED
R5
NOT PLACED
C5
NOT PLACED
NOT PLACED
C7
NOT PLACED
NOT PLACED
S19
SWITCH
3
1
NC
2
3
1
2
3
S20
SWITCH
UP
R3
22 K
S24
SWITCH
4
1
R4
43K
R5
130K
S21
SWITCH
7
1
2
3
2
3
S28
SWITCH
1
2
3
*
LEDBL
D3
NOT PLACED
D4
NOT PLACED
D5
NOT PLACED
D6
NOT PLACED
D7
NOT PLACED
D8
NOT PLACED
R13
NOT PLACED
R14
NOT PLACED
R15
NOT PLACED
S2 9
SWITCH
#
1
2
3
NC
S3 0
SWITCH
DOW N
1
2
3
NC
S31
SWITCH
F1
1
2
3
QSMG-H799
D2
D10
NC
R11
470
D11
D3
QSMG-H799
QSMG-H799
QSMG-H799
S32
SWITCH
F2
1
2
3
D9
D1
QSMG-H799
D4
QSMG-H799
D5
QSMG-H799
D6
QSMG-H799
D7
QSMG-H799
D8
QSMG-H799
QSMG-H799
R12
470
R1 3
330
R14
330
R15
33 0
Figure 11-13. UHF (403-440 MHz) Keypad Board Schematic Diagram
HKLN4216A
November 24, 2003
UHF 403-440 MHz PCB 8486635Z03-O Schematic Diagrams, Overlays, and Parts Lists
11-16
D301
C478
4
J470
R469
C476
C473
L471
D470
C489
R481
C482
4
1
U480
VR475
5
8
R482
VR473
R489
C301
R63
VR302
2
3
R483
VR301
C69
E452
3
R61
C
8
VR110
S440
C
2
4
2
1
C306
2
J301
Q280
L281
2
C92
C91
C7
C113
3
C3
C117
C1
J140
4
L1
M140
C2
C523
C10
CR1
S442
C9
L21
C116
C4
C5
C6
Q21
R25
C23 R22
C21 C11
U110
L2
L3
SH1
S443
L55
C46
C25
C522
R24
C47
C33
C36
C32
C12
C8
C29
C31
L32
C230
C233
L33
C34
L31
C28 C521
C38
5
C27
C30
C39
L34
C48
C35
C524 C37
C241
25
R205
R221
R220
C219
C201
R496
4
C305
C217
C216
C231
4
3
2
5
S444
2
C480
J471
Q171
U52
8
3
Y70
C284
R212
C240
37
R223
C205
R283
C232
C214 C202
R282 SH253
L283
C215
C212
R247
13
C208
C218
C244
SH201
U201
C207
C412
R417
C419
R410
C413
C418
R419
C209
R431
C410
C432
C210
R400
C400
C433
R504
16
22
1
1
7
R230
R243
1
C204
R245
R244
C213
U404
SH401
C507
C407
C409
L211
C503
C505
C282
C286
17
C243
C245
C408
C406
R280
D251
C446
C504
C506
3
5
R281
C281
C283
U403
C488
C302
4
5
R285
C402
C403
7
6
F301
C254
C252
L251
C251
D261
1
32
21
8
L252
C253
C263
L262
2
L254
R261
R262
C268
FL54
C257
C255
D262 SH250
C265
8
C430
C256
C266
4
C264
C431
Q403
L264
U402
R442
R445 R446 C500 C404
Q402
C422
R424
5
C421
R425
R443
Q440
R503
C455
3
L255
R253
C267
13
D424
D471
VR472
C461
R521
R471
C460
R462
L265
1
R254
R263
Q472
R472
R264
U451
FL53
R463
VR471
C477
4
C470
R522
25
37
R514 R513
C513
C458
C454
C303
R414
C501
E500
R470
R473
R480
C465
S441
Figure 11-14. UHF (403-440 MHz) PCB 8486635Z03-O Board Component Side View
HKLN4216A
November 24, 2003
UHF 403-440 MHz PCB 8486635Z03-O Schematic Diagrams, Overlays, and Parts Lists
11-17
C141
C134
TP150
D440
3
C105
D491
R498
4
3
Q493
Q481
C481
VR474
R509
R486
R485
Q482
R508
Q490
R495
R494
2
R487 R484
C484
3
4
C483
R491
R493
8
R499
R497
U511
R490
1
U490
5
R492
C492
4
C490
C498
R488
C479
2
4
L103
4
R104
2 3
C496
R477
R474
R311
C314
R310
TP404
C316
SH100 C171
C106
R105
R475
3
4
Q311
L131
R111
L110
C101
C108 Q100
J491
Q312
R312
R313
C136
C123
R162
R106
L101
C102
C107
C474
Q470
R476
C137
C124
D120
4
1
L102
C112
L100
R479
Q313
4
5
C315
C156
C109 C114 R107
C120
R103
L141
L130
U150
C104
C311
U320
R320
C323
8
C320
R322
R506
R255
C312
R158
C499
FL52
C313
U310
R321
C310
C472
C111 R110
C154
C334
U330
L270
C333 C331
C304
C61
C153
R478
R82
C82
C475
L81
C158
C103
1
6
3
R62
D51
R60
C41
R67
R100 R102
R81
C64
Q170
3
4
C172
C100
L140
L132
8
C525
C170
Y51
2
C62
C65
C122
C115
R159
R156
4
SH50
1
R157
R80
5
R153
Q150
R101
C74
C150 R152
C81
C80
20
C66
C67
R155
C60
11
C63
C42
C43
L41
R40
R65
C68
R66
R64
C151
D121
C132
C159
C471
C271
C322
E453
C457
R451
C456
C321
10
D52
C273
L272
R78
R74
Q70
R72
C45
R91
L54
R77 R57
U51
L40
C270
R272
R271
L271
R90
R75
TP1
R277
R273
L282
1
R274
R76
6
C44
C292
C73
C72
SH40
TP2
T42
C274
E451
C497
3
R284
C285
SH251
U251
20
C275
L292
10
11
C466
C453
C463
L291
L276
R412 C416
C411
R518
C518
C514
R275
R511
C290
C451
C462
R276
C276
R516
C452
8
R464
TP403
U510
5
R515
1
C291
C71
C70
R73
4
C272
R460
4
C442
C443
R415
C415
TP200
TP240
R246
C90
C157
R154
C152
L121
R151
C121
C59
C13
CR41
C445
C444
C414
R517
C464
C519
R519
R512
C459
C511
D414
C420
TP301
C512
C467
Q520
3
4
R421
C401
R523
R520 Q471
R420
R418
C447
R423
R422
R441
R440
29
28 30
29
C405 R505
C440 C441
76
51
C203
D201
R202
C226
C225
R413 R430
SH400
J460
U401
C14
C211
R120
R150
C58
3
C228
L120
C56
R55
R227
C227
R121
U151
C57
R53
Q51
6
5
4
CR51
R54
C93
4
L53
SH52
FL51
T41
R23
C20
Q22
C26
R21
Y202
4
SH200
L52
R51
6
R52
C55
2
3
C49
Y201
2
D221
31
32
C224
C52 C53
C51
C221
C223
1
L51
2
3
R502
D220
4
3
TP302
Q410
C222
R501
26
C206 R206
C220
R411
R433
R432
TP405
TP401
TP402
C417 R416
R434
C99
R20
C495
R507
4 Q494
3
R510
C493
C494
Figure 11-15. UHF (403-440 MHz) Board Solder Side View
HKLN4216A
December 4, 2003
11-18
UHF 403-440 MHz Schematic Diagrams, Overlays, and Parts Lists
C2
C4
C5
C7
1
28
g1
J1
C3
C6
R11
D8
G2
9
R5
D1
D6
C1
g2
R9
C8
J2
D4
G1
D11
R10
R6
R1
R7
D9
R2
R8
D7
D5
D3
D10
R15
R14
D2
R13
R12
R4
R3
Component Side
Solder Side
Figure 11-16. UHF (403-440 MHz) PCB 8486635Z03-O Keypad Board
December 4, 2003
HKLN4216A
UHF 403-440 MHz PCB 8486635Z03-O Schematic Diagrams, Overlays, and Parts Lists
UHF (403-440 MHz) Radio Parts List
Circuit
Ref
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C20
C21
C23
C25
C26
C27
C28
C29
C30
C31
C32
C33
C34
C35
C36
C37
C38
C39
C41
C42
C43
C44
C45
C46
C47
C48
C49
C51
C52
C53
C55
C56
C57
C58
C59
C60
Motorola
Part No.
2109445U37
2109445U39
2109445U09
Not_Placed
0662057M01
2109445U09
Not_Placed
0662057M01
2109445U39
2109445U36
2109445U40
2109445U27
2109445U12
2109445U12
2113743L07
2113743L07
2113743L07
2113743L07
2113743L07
2109445U26
2109445U37
2109445U25
2109445U41
2109445U26
2109445U24
2109445U39
2109445U22
2109445U35
2109445U38
2109445U22
2109445U38
2109445U35
2109445U37
2109445U27
2109445U44
2109445U27
2109445U41
Not_Placed
Not_Placed
0662057M01
Not_Placed
2113743N48
2109445U39
2109445U26
2113743M24
2113743E20
2113743M24
2113743N16
2113743N12
2113743M24
HKLN4216A
Description
CAP, 15pF
CAP, 18pF
CAP, 1.8pF
CAP, 20pF
RES, 0
CAP, 1.8pF
CAP, 22pF
RES, 0
CAP, 18pF
CAP, 13pF
CAP, 20pF
CAP, 10pF
CAP, 2.4pF
CAP, 2.4pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 9.1pF
CAP, 15pF
CAP, 8.2pF
CAP, 22pF
CAP, 9.1pF
CAP, 7.5pF
CAP, 18pF
CAP, 6.2pF
CAP, 12pF
CAP, 16pF
CAP, 6.2pF
CAP, 16pF
CAP, 12pF
CAP, 15pF
CAP, 10pF
CAP, 30pF
CAP, 10pF
CAP, 22pF
CAP, 10pF
CAP, 10pF
RES, 0
CAP, 3.9pF
CAP, 82pF
CAP, 18pF
CAP, 9.1pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 3.9pF
CAP, 2.7pF
CAP, 0.1uF
Circuit
Ref
C61
C62
C63
C64
C65
C66
C67
C68
C69
C70
C71
C72
C73
C74
C80
C81
C82
C90
C91
C92
C93
C99
C100
C101
C102
C103
C104
C105
C106
C107
C108
C109
C111
C112
C113
C114
C115
C116
C117
C120
C121
C122
C123
C124
C132
C134
C136
C137
C141
C150
C151
Motorola
Part No.
2113743N46
2113743M24
2113743M24
2113743M24
2113743M24
2113743M24
2113743M24
2113743M24
2113743M24
2113743N53
2113743E20
2113743M24
2113743L33
2113743N42
2109445U41
2109445U45
2109445U45
2113743M24
2311049A57
2113743E20
Not_Placed
2113743M24
2113743L07
2113743M24
2113743M24
2113743L07
2113743N26
2113740F03
2113743L07
2113743N13
2113743L07
2113743M24
2113743L07
2113743M24
2113743L07
2113743L07
2311049A07
2113743M24
2113740F65
Not_Placed
2113743L07
2113740F26
2113740F21
2113740F59
2113740F27
2113740F25
2113740F18
2113740F59
Not_Placed
2113743L07
2113743L07
11-19
Description
CAP, 68pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 130pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 4700pF
CAP, 47pF
CAP, 22pF
CAP, 33pF
CAP, 33pF
CAP, 0.1uF
CAPP, 10uF
CAP, 0.1uF
CAP, 3.6pF
CAP, 0.1uF
CAP, 390pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 390pF
CAP, 10pF
CAP, 1pF
CAP, 390pF
CAP, 3pF
CAP, 390pF
CAP, 0.1uF
CAP, 390pF
CAP, 0.1uF
CAP, 390pF
CAP, 390pF
CAPP, 1uF
CAP, 0.1uF
CAP, 390pF
CAP, 8.2pF
CAP, 390pF
CAP, 9.1pF
CAP, 5.6pF
CAP, 220pF
CAP, 10pF
CAP, 8.2pF
CAP, 4.3pF
CAP, 220pF
CAP, 8.2pF
CAP, 390pF
CAP, 390pF
Circuit
Ref
C152
C153
C154
C156
C157
C158
C159
C170
C171
C172
C201
C202
C203
C204
C205
C206
C207
C208
C209
C210
C211
C212
C213
C214
C215
C216
C217
C218
C219
C220
C221
C222
C223
C224
C225
C226
C227
C228
C230
C231
C232
C233
C240
C241
C243
C244
C245
C251
C252
C253
C254
Motorola
Part No.
2113743L07
2113743K18
2113743L07
2113743L41
2113743M24
2113743L07
2113743L07
2113743L07
2113743L07
2113743L07
2113740F59
2109445U52
2109445U13
2113743L09
Not_Placed
Not_Placed
2113743L09
2113743L09
2113743L09
2113743L09
2113743E20
2113743F18
2113743L41
2113743L17
2113743F18
2113743E20
2113743L17
2113743F18
2113743E20
2113743N34
2113743L41
2113743L41
2113743L41
2113743L41
2311049A57
2311049A57
2113743L17
2113743E20
2113743F18
2113743L17
2113743E20
2311049A56
2113743N06
2113743N50
0886641Z01
0888600M25
2311049A08
0888600M03
Not_Placed
2109445U22
2109445U24
Description
CAP, 390pF
CAP, 0.47uF
CAP, 390pF
CAP, .01uF
CAP, 0.1uF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 220pF
CAP, 62pF
CAP, 2.7pF
CAP, 470pF
CAP, 2.7pF
CAP, 1000pF
CAP, 470pF
CAP, 470pF
CAP, 470pF
CAP, 470pF
CAP, 0.1uF
CAP, 2.2uF
CAP, .01uF
CAP, 1000pF
CAP, 2.2uF
CAP, 0.1uF
CAP, 1000pF
CAP, 2.2uF
CAP, 0.1uF
CAP, 22pF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAPP, 10uF
CAPP, 10uF
CAP, 1000pF
CAP, 0.1uF
CAP, 2.2uF
CAP, 1000pF
CAP, 0.1uF
CAPP, 4.7uF
CAP, 1.3pF
CAP, 100pF
CAP, 0.1uF
CAP, .01uF
CAPP, 1uF
CAP, 150pF
CAP, 390pF
CAP, 6.2pF
CAP, 7.5pF
Circuit
Ref
C255
C256
C257
C263
C264
C265
C266
C267
C268
C270
C271
C272
C273
C274
C275
C276
C281
C282
C283
C284
C285
C286
C290
C291
C292
C301
C302
C303
C304
C305
C306
C310
C311
C312
C313
C314
C315
C316
C320
C321
C322
C323
C331
C333
C334
C400
C401
C402
C403
C404
C405
Motorola
Part No.
2109445U21
2109445U16
2109445U27
2109445U29
2109445U15
2109445U15
2109445U15
2109445U23
2109445U01
2113743L07
2113743L07
2113743E20
2113743L41
2113743E20
2113743L07
2113743N16
2113743L07
2109445U16
2113743L07
2113743L07
2113743E20
2113743N24
2113743N22
2113743N29
2113743L07
2113743L07
2113743L07
2311049A97
2113743L41
2113743N50
2113741F49
2113743L41
2113743E05
2311049A57
2113743L41
2113743L19
2113743L19
2113743L19
2113743E05
2311049A57
2113743L41
2113743N54
2113743L41
2113743L41
2311049A57
Not_Placed
2113743M24
2113743L17
2113743N50
2113743L17
2113743N50
Description
CAP, 5.6pF
CAP, 3.6pF
CAP, 10pF
CAP, 5pF
CAP, 3.3pF
CAP, 3.3pF
CAP, 3.3pF
CAP, 6.8pF
CAP, 0.5pF
CAP, 390pF
CAP, 390pF
CAP, 0.1uF
CAP, .01uF
CAP, 0.1uF
CAP, 390pF
CAP, 3.9pF
CAP, 390pF
CAP, 3.6pF
CAP, 390pF
CAP, 390pF
CAP, 0.1uF
CAP, 8.2pF
CAP, 6.8pF
CAP, 13pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAPP, 33uF
CAP, .01uF
CAP, 100pF
CAP, .01uF
CAP, .01uF
CAP, .018uF
CAPP, 10uF
CAP, .01uF
CAP, 1200pF
CAP, 1200pF
CAP, 1200pF
CAP, .018uF
CAPP, 10uF
CAP, .01uF
CAP, 150pF
CAP, .01uF
CAP, .01uF
CAPP, 10uF
CAP, .022uF
CAP, 0.1uF
CAP, 1000pF
CAP, 150pF
CAP, 1000pF
CAP, 150pF
December 4, 2003
11-20
Circuit
Ref
C406
C407
C408
C409
C410
C411
C412
C413
C414
C415
C416
C417
C418
C419
C420
C421
C422
C430
C431
C432
C433
C440
C441
C442
C443
C444
C445
C446
C447
C451
C452
C453
C454
C455
C456
C457
C458
C459
C460
C461
C462
C463
C464
C465
C466
C467
C470
C471
C472
C473
C474
UHF 403-440 MHz PCB 8486635Z03-O Schematic Diagrams, Overlays, and Parts Lists
Motorola
Part No.
2113743N50
2113743L17
2113743L17
2113743L17
2311049A57
2113743M24
2113743L17
2113743M24
2113743M24
2113743L17
2113743L17
2113743L17
2113743M24
2113743L17
2113743L41
2113743L41
2113743L41
2113743M24
2113743L17
2113743M24
2113743L17
2113743L41
2113743L41
2113743L41
2113743L41
2113743L41
2113743L41
2113743L41
2113743M24
2113743M24
2113743E20
2311049A56
2113743E20
2113743L48
2113743E20
2113743E20
2113743E20
2113743E20
2113743E20
2113743L17
2113743E20
2113743E20
2113743E20
2113743L17
Not_Placed
2113743L19
2113743E20
2113743F18
2113743E20
2113743N54
2113743N54
December 4, 2003
Description
CAP, 150pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAPP, 10uF
CAP, 0.1uF
CAP, 1000pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 0.1uF
CAP, 1000pF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, 0.1uF
CAP, 1000pF
CAP, 0.1uF
CAP, 1000pF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAPP, 4.7uF
CAP, 0.1uF
CAP, .022uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 1000pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 1000pF
CAP, 470pF
CAP, 1200pF
CAP, 0.1uF
CAP, 2.2uF
CAP, 0.1uF
CAP, 150pF
CAP, 150pF
Circuit
Ref
C475
C476
C477
C478
C479
C480
C481
C482
C483
C484
C488
C489
C490
C492
C493
C494
C495
C496
C497
C498
C499
C500
C501
C503
C504
C505
C506
C507
C511
C512
C513
C514
C518
C519
C521
C522
C523
C524
C525
CR1
CR41
CR51
D51
D52
D120
D121
D201
D220
D221
D251
D261
Motorola
Part No.
2113743L48
2113743L48
2113743M24
2113743N54
2113743N54
2113743E20
Not_Placed
Not_Placed
2113743E20
Not_Placed
2113743L09
2113743L09
2113743L09
2113928J08
2113743L17
2113743F18
2113743F16
2113743F16
2113743E20
2113743F16
2113743N48
2113743L17
2113743F16
2113743L17
2113743L17
2113743L17
2113743L17
2113743L17
2113740F59
2113743N22
2113740F59
2113743N31
2113743E20
2113743F16
2109445U15
2109445U11
2186463Z04
2186463Z05
2113743L07
4813825A19
4802246J04
4813825A19
4802245J97
4802245J97
4880973Z02
4880973Z02
4862824C03
4802233J09
4802233J09
4862824C01
4862824C01
Description
CAP, .022uF
CAP, .022uF
CAP, 0.1uF
CAP, 150pF
CAP, 150pF
CAP, 0.1uF
CAP, .01uF
CAP, .01uF
CAP, 0.1uF
CAP, .033uF
CAP, 470pF
CAP, 470pF
CAP, 470pF
CAP, 10uF
CAP, 1000pF
CAP, 2.2uF
CAP, 1uF
CAP, 1uF
CAP, 0.1uF
CAP, 1uF
CAP, 82pF
CAP, 1000pF
CAP, 1uF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 220pF
CAP, 6.8pF
CAP, 220pF
CAP, 16pF
CAP, 0.1uF
CAP, 1uF
CAP, 3.3pF
CAP, 2.2pF
CAP, 0.55pF
CAP, 0.6pF
CAP, 390pF
MMBD352
HSMS2829
MMBD352
DAN235ETL
DAN235ETL
MA4PH261
MA4PH261
1SV232
IMN10
IMN10
1SV229
1SV229
Circuit
Ref
D262
D301
D414
D424
D440
D470
D471
D491
E451
E452
E453
E500
F301
FL51
FL52
FL53
FL54
J140
J301
J460
J470
J471
J491
L1
L2
L3
L21
L31
L32
L33
L34
L40
L41
L51
L52
L53
L54
L55
L81
L100
L101
L102
L103
L110
L120
L121
L130
L131
L132
L140
L141
Motorola
Part No.
4862824C01
4813833A19
4805129M41
4809924D18
4805729G49
4809924D18
4809924D18
Not_Placed
2480640Z01
2480640Z01
2480640Z01
2480640Z01
6580542Z01
9180022M11
9180468V04
9180469V05
9180469V03
0986428Z01
0986565Z01
Not_Placed
0985818A01
0980683Z03
2809926G01
2409348J15
2409348J15
2409348J15
2413926N17
2409348J15
2409348J15
2409348J15
2409348J15
2413926K16
2413926K16
2413926N26
2462587V44
2113743N52
2413923A25
2413926N15
2413923A19
2413926K27
2413926K27
2409377M26
2409377M31
2413926K27
2413926K27
2462587V25
2460591M27
2460591M32
2460591M27
2113740F65
2460591M27
Description
1SV229
MBRM120ET3
MMBD501
RB520S-30
BRPY1204W
RB520S-30
RB520S-30
MMBD501
BK1005HM471
BK1005HM471
BK1005HM471
BK1005HM471
FUSE
MXF45
FLTR
CFWC455E
CFWC455G
CONN_J
CONN_J
CONN_J
CONN_J
CONN_J
CONN_P
IDCTR, 9.85nH
IDCTR, 9.85nH
IDCTR, 9.85nH
IDCTR, 27nH
IDCTR, 9.85nH
IDCTR, 9.85nH
IDCTR, 9.85nH
IDCTR, 9.85nH
IDCTR, 27nH
IDCTR, 27nH
IDCTR, 150nH
IDCTR, 680nH
CAP, 120pF
IDCTR, 1.2uH
IDCTR, 18nH
IDCTR, 1uH
IDCTR, 220nH
IDCTR, 220nH
IDCTR, 8.7nH
IDCTR, 30nH
IDCTR, 220nH
IDCTR, 220nH
IDCTR, 18nH
IDCTR, 22.69nH
IDCTR, 27.42nH
IDCTR, 22.69nH
CAP, 390pF
IDCTR, 22.69nH
Circuit
Ref
L211
L251
L252
L254
L255
L262
L264
L265
L270
L271
L272
L276
L281
L282
L283
L291
L292
L471
M140
Q21
Q22
Q51
Q70
Q100
Q150
Q170
Q171
Q280
Q311
Q312
Q313
Q402
Q403
Q410
Q440
Q470
Q471
Q472
Q481
Q482
Q490
Q493
Q494
Q520
R20
R21
R22
R23
R24
R25
R40
Motorola
Part No.
2413926K30
2413926N28
2413926N17
2484562T11
2413926N28
2413926N17
2484562T11
2413926N28
2413926N28
Not_Placed
2413926N28
2413926N17
2413926N18
2413926N14
Not_Placed
2413926N10
2413926N14
2413926K30
0286427Z01
4802247J01
4805723X02
4802197J95
4880214G02
4885593U03
4880214G02
4809939C34
4880048M01
4802245J95
4809579E18
4809579E18
4802245J54
4880048M01
4813824A17
4802245J54
5180159R01
4805723X02
4802245J54
4805723X02
Not_Placed
Not_Placed
4802245J54
4809579E18
4802245J54
5180159R01
0662057M92
0662057M47
0662057M92
0662057N09
0662057M76
0662057M92
0662057M74
Description
IDCTR, 390nH
IDCTR, 220nH
IDCTR, 27nH
IDCTR, 12.5nH
IDCTR, 220nH
IDCTR, 27nH
IDCTR, 12.5nH
IDCTR, 220nH
IDCTR, 220nH
IDCTR, 220nH
IDCTR, 220nH
IDCTR, 27nH
IDCTR, 33nH
IDCTR, 15nH
IDCTR, 22nH
IDCTR, 6.8nH
IDCTR, 15nH
IDCTR, 390nH
ANTENNA_NUT
BFS505
UMT1
PBR941
MMBT3904
BFG540W
MMBT3904
EMB10
DTC144EKA
BFS540
TP0101T
TP0101T
UMG5
DTC144EKA
MMBT3906
UMG5
IMX1
UMT1
UMG5
UMT1
MMBT3906
MMBT3904
UMG5
TP0101T
UMG5
IMX1
RES, 5.6K
RES, 75
RES, 5.6K
RES, 27K
RES, 1.2K
RES, 5.6K
RES, 1K
HKLN4216A
UHF 403-440 MHz PCB 8486635Z03-O Schematic Diagrams, Overlays, and Parts Lists
Circuit
Ref
R51
R52
R53
R54
R55
R57
R60
R61
R62
R63
R64
R65
R66
R67
R72
R73
R74
R75
R76
R77
R78
R80
R81
R82
R90
R91
R100
R101
R102
R103
R104
R105
R106
R107
R110
R111
R120
R121
R150
R151
R152
R153
R154
R155
R156
R157
R158
R159
R162
R202
R205
Motorola
Part No.
0662057M43
0662057N01
0662057N11
0662057M91
0662057M62
0662057M90
0662057M83
0662057N23
0662057M86
0662057N13
0662057N06
0662057N13
0662057N06
0662057N06
0662057M64
0662057M80
0662057M76
0662057N01
0662057V04
0662057U99
0662057M70
0662057M91
0662057M74
Not_Placed
0662057M43
0662057M79
0662057M72
0662057M20
0662057M72
0662057M85
0662057A07
0662057M84
0662057M90
Not_Placed
0662057M67
0662057M80
0662057C55
0662057C55
0680539Z01
0662057A15
0662057V27
0662057V27
0662057V27
0662057V27
0662057M62
0662057M82
0662057M91
0662057B47
0662057M98
0662057N27
0662057M50
HKLN4216A
Description
RES, 51
RES, 12K
RES, 33K
RES, 5.1K
RES, 330
RES, 4.7K
RES, 2.4K
RES, 100K
RES, 3.3K
RES, 39K
RES, 20K
RES, 39K
RES, 20K
RES, 20K
RES, 390
RES, 1.8K
RES, 1.2K
RES, 12K
RES, 12K
RES, 8.2K
RES, 680
RES, 5.1K
RES, 1K
RES, 0
RES, 51
RES, 1.6K
RES, 820
RES, 5.6
RES, 820
RES, 3K
RES, 18
RES, 2.7K
RES, 4.7K
RES, 300
RES, 510
RES, 1.8K
RES, 150
RES, 150
RES, 0.1
RES, 39
RES, 100K
RES, 100K
RES, 100K
RES, 100K
RES, 330
RES, 2.2K
RES, 5.1K
RES, 0
RES, 10K
RES, 150K
RES, 100
Circuit
Ref
R206
R212
R220
R221
R223
R227
R230
R243
R244
R245
R246
R247
R253
R254
R255
R261
R262
R263
R264
R271
R272
R273
R274
R275
R276
R277
R280
R281
R282
R283
R284
R285
R310
R311
R312
R313
R320
R321
R322
R400
R410
R411
R412
R413
R414
R415
R416
R417
R418
R419
R420
Motorola
Part No.
Not_Placed
0662057C01
0662057M34
0662057M34
0662057M50
0662057N13
0662057N08
0662057M72
0662057M43
0662057M78
0662057N23
0662057N07
0662057M38
0662057M50
0662057U91
0662057N07
0662057M94
0662057M38
0662057M50
0662057M90
0662057M92
0662057M62
0662057M38
0662057M50
Not_Placed
0662057B47
0662057M90
0662057M96
0662057M73
0662057M53
0662057M62
0662057M01
0662057N23
0662057N23
0662057N06
0662057M98
0662057V43
0662057V35
0662057N23
Not_Placed
0662057M98
0662057M72
0662057N23
0662057N23
0662057N11
0662057N11
0662057N06
0662057M98
0662057N23
0662057M90
0662057V35
11-21
Description
RES, 100
RES, 0
RES, 22
RES, 22
RES, 100
RES, 39K
RES, 24K
RES, 820
RES, 51
RES, 1.5K
RES, 100K
RES, 22K
RES, 33
RES, 100
RES, 3.9K
RES, 22K
RES, 6.8K
RES, 33
RES, 100
RES, 4.7K
RES, 5.6K
RES, 330
RES, 33
RES, 100
RES, 1K
RES, 0
RES, 4.7K
RES, 8.2K
RES, 910
RES, 130
RES, 330
RES, 0
RES, 100K
RES, 100K
RES, 20K
RES, 10K
RES, 330K
RES, 200K
RES, 100K
RES, 100K
RES, 10K
RES, 820
RES, 100K
RES, 100K
RES, 33K
RES, 33K
RES, 20K
RES, 10K
RES, 100K
RES, 4.7K
RES, 200K
Circuit
Ref
R421
R422
R423
R424
R425
R430
R431
R432
R433
R434
R440
R441
R442
R443
R445
R446
R451
R460
R462
R463
R464
R469
R470
R471
R472
R473
R474
R475
R476
R477
R478
R479
R480
R481
R482
R483
R484
R485
R486
R487
R488
R489
R490
R491
R492
R493
R494
R495
R496
R497
R498
Motorola
Part No.
0662057V27
0662057N23
0662057N23
0662057V35
0662057V27
0662057N23
Not_Placed
0662057M01
0662057N23
Not_Placed
0662057M90
0662057M90
0662057A33
0662057A27
0662057M90
0662057M98
0662057N15
0662057N08
0662057N08
0662057N08
0662057N10
0662057M26
0662057M82
0662057M82
0662057M70
0662057M70
0662057A37
0662057N29
0662057N23
0662057M82
0662057M82
0662057N23
0662057B47
Not_Placed
Not_Placed
Not_Placed
Not_Placed
Not_Placed
Not_Placed
0662057M01
0662057N35
Not_Placed
Not_Placed
0662057M01
0662057N08
0662057N35
0662057V43
0662057M92
Not_Placed
Not_Placed
Not_Placed
Description
RES, 100K
RES, 100K
RES, 100K
RES, 200K
RES, 100K
RES, 100K
RES, 100K
RES, 0
RES, 100K
RES, 100K
RES, 4.7K
RES, 4.7K
RES, 220
RES, 120
RES, 4.7K
RES, 10K
RES, 47K
RES, 24K
RES, 24K
RES, 24K
RES, 30K
RES, 10
RES, 2.2K
RES, 2.2K
RES, 680
RES, 680
RES, 330
RES, 180K
RES, 100K
RES, 2.2K
RES, 2.2K
RES, 100K
RES, 0
RES, 100K
RES, 330K
RES, 150K
RES, 2.2K
RES, 100K
RES, 100K
RES, 0
RES, 330K
RES, 91K
RES, 2.2K
RES, 0
RES, 24K
RES, 330K
RES, 330K
RES, 5.6K
RES, 10K
RES, 1MEG
RES, 47K
Circuit
Ref
R499
R501
R502
R503
R504
R505
R506
R507
R508
R509
R510
R511
R512
R513
R514
R515
R516
R517
R518
R519
R520
R521
R522
R523
S440
S441
S442
S443
S444
SH1
SH40
SH50
SH52
SH100
SH200
SH201
SH250
SH251
SH253
SH400
SH401
T41
T42
U51
U52
U110
U150
U151
U201
U251
U310
Motorola
Part No.
Not_Placed
0662057M50
0662057M50
0662057M50
0662057M50
0662057M50
0662057M50
0662057M50
0662057N23
0662057N23
0662057N35
0662057N23
0662057N27
0662057N23
0662057N23
0662057M01
Not_Placed
Not_Placed
0662057N31
0662057N23
0662057N23
Not_Placed
0662057N23
0662057M98
4080710Z06
4070354A01
4070354A01
4070354A01
1880619Z02
2686421Z01
2686419Z01
2686423Z01
2686424Z01
2686418Z01
2686424Z01
2686423Z01
2686425Z01
2686425Z01
2686422Z01
2686420Z01
2686420Z01
2580541Z02
2580541Z02
5186144B01
5109522E10
0186438Z03
5113818A01
2484657R01
5185963A27
5105750U54
5102478J01
Description
RES, 270K
RES, 100
RES, 100
RES, 100
RES, 100
RES, 100
RES, 100
RES, 100
RES, 100K
RES, 100K
RES, 330K
RES, 100K
RES, 150K
RES, 100K
RES, 100K
RES, 0
RES, 0
RES, 0
RES, 220K
RES, 100K
RES, 100K
RES, 100K
RES, 100K
RES, 10K
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
XFMR
XFMR
SA616
TC7W04F
RA07M4047M_UHF
LM2904
57R01
63A27
50U54
TK71750S
December 4, 2003
11-22
UHF 403-440 MHz PCB 8486635Z03-O Schematic Diagrams, Overlays, and Parts Lists
Circuit
Ref
U320
U330
U401
U402*
U403
U404*
U451
U480
U490
U510
U511
VR110
VR301
VR302
VR471
VR472
VR473
VR474
VR475
Y51
Y70
Y201*
Y202
Motorola
Part No.
Description
5185963A55 LP2986
5102479J01
TK71730S
5102226J56
MC68HC11FL0
5102463J64
X25128-2.7
Not_Placed
SRM2B256
5102480J01
AT49LV001N_70VI
5185130C53 30C53
Not_Placed
LM2904
5108858K99 TDA8541
5113818A01 LM2904
4802245J54
UMG5
4813830A86 MM3Z3V9T1
4813830A33 MMBZ5250B
4813830A33 MMBZ5250B
4813830A18 MMBZ5235B
4813830A09 MMBZ5226B
4813830A33 MMBZ5250B
4813830A33 MMBZ5250B
4880140L20
MMBZ5245B
4802245J84
TSS2_44_395MHZ
9186145B02 45B02
4880114R06 14R06
Not_Placed
45J68
* Motorola Depot Servicing only
Circuit
Ref
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
Motorola
Part No.
0662057A97
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
0662057A97
0662057A76
0662057A81
NOTPLACED
NOTPLACED
0662057A41
0662057A41
NOTPLACED
NOTPLACED
NOTPLACED
Description
RES, 100K
RES, 13K
RES, 22K
RES, 43K
RES, 130K
RES, 100K
RES, 13K
RES, 22K
RES, 43K
RES, 130K
RES, 470
RES, 470
RES, 330
RES, 330
RES, 330
UHF (403-440 MHz) Keypad Board Parts List
Circuit
Ref
C1
C2
C3
C4
C5
C6
C7
C8
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
J1
J2
Motorola
Part No.
NOTPLACED
2113740F55
NOTPLACED
2113743E20
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
4809496B11
4809496B11
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
4809496B11
4809496B11
4809496B11
0986632Z01
0909059E18
December 4, 2003
Description
CAP, 150pF
CAP, 150pF
CAP, 150pF
CAP, 0.1uF
CAP, 150pF
CAP, 150pF
CAP, 150pF
CAP, 150pF
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
CONN_J
CONN_J
HKLN4216A
UHF 440-470 MHz PCB 84863848Z13-C Schematic Diagrams, Overlays, and Parts Lists
11-23
Chapter 11 UHF 440-470 MHz PCB 84863848Z13-C Schematic Diagrams, Overlays, and Parts Lists
UHF R2
USWB+
5V
5T
5R
3V
5T
USWB+
USWB+
5V
5T
5R
3V
5R
5V
USWB+
5T
TX_ENA
TX_ENA
5V
PWR_SET
5R
TX_UHF_R2
PWR_SET
DEMOD
DEMOD
RX_FE_UHF_R2
RX_BE
BW_SEL
BW_SEL
CONTROLLER
RSSI
IF_OUT
IF_IN
RX_IN
RX_OUT
TX_INJ
RSSI
RX_INJ
MOD_OUT
MOD_IN
16_8_MHZ
16_8_MHZ
5V
3V
5R
3V
5V
3V
5R
3V
PRESC
RX_INJ
SYNTH_UHF_R2
SYNTH_CS
V_STEER
V_SF
VCO_MOD
SPI_DATA_OUT
TX_INJ
TRB
LOCK
VCO_UHF_R2
SPI_CLK
VCO_MOD
SPI_DATA_OUT
V_STEER
SYNTH_CS
V_SF
SPI_CLK
PRESC
TRB
LOCK
Figure 11-17. UHF (440-470 MHz) Radio Circuit Block Diagram
HKLN4216A
November 24, 2003
11-24
UHF 438-470 MHz Schematic Diagrams, Overlays, and Parts Lists
Chapter 11 UHF 438-470 MHz Schematic Diagrams, Overlays, and Parts Lists
FE_5R
5R
R20
5.6K
UHF R2 Front End
1
390pF
4
Q22
2
C26
R21
82
SH1
SHIELD
5
UMT1
C20
SH40
SHIELD
1
3
6
390pF
1
C25
390pF
L55
22nH
C99
R22
5.6K
R23
27K
0.1uF
C23
IF1
C3
6.2pF
C5
7.5pF
0.45pF
6.7%
C6
8pF
C8
5.1pF
C1
9.1pF
1.1%
1.3%
L1
9.85nH
2%
1.25%
C4
C12
16pF
1%
NU
L2
9.85nH
2%
CR1
2%
C7
C10
L3
9.85nH
2%
16pF
1%
390pF
15pF
1.2%
3
L52
R25
5.6K
L21
22nH
8pF
1.25%
R51
51
2
BFS505
2
1
IF_OUT
0.5pF
1
Q21
FE_IF_OUT
680nH
3
C21
C11
RX_IN
1.6%
5.1pF
C522
C9
8.2pF
0.79V
1.1%
4.2V
1.5K
390pF
C2
9.1pF
C521
R24
C523
C51
L51
150nH
82pF
C524
0.5pF
C28
12pF
1%
C27
7.5pF
1.3%
C29
6.8pF
1.5%
L31
9.85nH
2%
C32
6.8pF
C31
7pF
1.43%
C30
C46
16pF
1%
NU
1.5%
L32
9.85nH
2%
1.3%
1.3%
1.5%
C33
C37
7.5pF
C35
7.5pF
C34
6.8pF
C36
C47
L33
9.85nH
2%
20pF
1%
18pF
1%
C38
8.2pF
1.2%
L34
9.85nH
2%
C48
4
T41
RF BALUN
0
C39
C49
7pF
1.43%
NU
C13
3
2
1.5pF
6.7%
C14
1.5pF
1
6
NC
5
6.7%
NC
CR41
HSMS2829
1
IO1
3
4
T42
IF BALUN
IO3
IO4
4
3
IO2
2
FE_RF_IN J
C42
RX_INJ
16pF
C41
7.5pF
L40
L41
27nH
27nH
C43
20pF
C44
8.2pF
C45
16pF
R40
1K
2
1
6
NC
5
NC
1
TP1
TP2
1
Figure 11-18. UHF (438-470 MHz) PCB 8486348Z13-C Receiver Front End Schematic Diagram
November 24, 2003
HKLN4216A
UHF 440-470 MHz PCB 84863848Z13-C Schematic Diagrams, Overlays, and Parts Lists
11-25
RX Back End (Overtone)
7
1
C68
U52-1
TC7W04F
FL53
CFWC455E
R65
39K
0.1uF
1
IN
R66
20K
OUT 2
0V for 12.5kHz
C69
R63
39K
D51
0.1uF
2
1 IN
1
SH50
SHIELD
8
U52-4
PWR_GND
3
5
SH52
SHIELD
1
GND
3
2
C74
R62
3.3K
NC
VCC
1
OUT 2
R67
20K
GND1
U52-3
TC7W04F
D52
R64
20K
FL54
CFWC455G
3
5V
4
2
6
R60
2.4K
1
3
4
1 IN
4
C63
C62
FL52
FLTR
9180468V04
0.1uF
0.1uF
OU T 2
C64
GND
C66
C65
0.1uF
0.1uF
47pF
5V
C67
C61
0.1uF
R72
390
0.1uF
3
3
Q70
1
5V
C91
0.1uF
10uF
1 RFIN
2 RFIN_DEC
51
C90
C92
0.1uF
R53
FL51
MXF45
44.85MHz
0.1uF
R54
5.1K
OUT 6
3 IN
C52
18pF
C53
9.1pF
1.1%
0.74V
120pF
C93
GND2
2 CC1
5 CC2
GND1
IF_IN
1
3.6pF
NU
C57
3.9pF
C59
0.1uF
2.7pF
3
L53
IF_IN
C58
3.05V
33K
C55
R52
12K
1
Q51
CR51
3
L54
1.2uH
2%
SA616
LIMOUT 11
GND
15
C70
R73
1.8K
130pF
R74
1.2K
Y70
45B02
455KHz
1
R57
4.7K
2
3
C81
2
C80
R80
5.1K
33pF
1%
PBR941
1
U51
C71
0.1uF
C60
0.1uF
2
VCC
9 RSSI_FEED
6
2
10 QUADIN
R90
LIMIN 14
LIM_DEC1 13
LIM_DEC2 12
5V
5 RSSIOUT
R55
330
0.1uF
7 AUDIO_FEED
8 AUDIOOU T
C56
IFAMP_DEC1
IFAMPI N
IFAMP_DEC2
IFAMPOUT
1.6K
3 OSCOUT
4 OSCIN
3.39V
5V
19
18
17
16
MMBT3904
R91
MIXOUT 20
IF_5V
47pF
GND2
BW_SE L
3
TC7W04F
5V for 25kHz
GND2
U52-2
R61
100K
IF_BAND_SEL
GND1
5V
R75
IF_RSSI
2.1V When -47 dBm @ antenna
RSSI
22pF
1%
C72
12K
0.1uF
4
R81
1K
C82
Y51
TSS2_44_395MHZ
44.395MHz
3 OU T
L81
1uH
33pF
1%
R82
NU
IN
GND1 GND
4
2
1
R76
12K
1%
R77
R78
8.2K
1%
680
IF_DEMOD
1.5V
DEMOD
C73
4700pF
Figure 11-19. UHF (438-470 MHz) Receiver Back End Schematic Diagram
HKLN4216A
November 24, 2003
11-26
UHF 438-470 MHz Schematic Diagrams, Overlays, and Parts Lists
UHF R2 Synthesizer
FN_V_SF
4.5V
SH201
SHIELD
SH200
SHIELD
R230
22K
1
R247
20K
C231
C232
C233
1000pF
0.1uF
4.7uF
V_SF
1
6
22
33
44
FN_LOCK
C241
FN_PRESC
NC
NC
42
CCOMP
18
REFSEL
NC
32 PREIN
27
SFBASE
26
SFCAP
PRESC
100pF
C240
1.3pF
LOCK
DGND
AGND
PRE_GND
PD_GND
NC
NC
NC
31
NC3
29
NC2
17
NC1
2.2uF
NC
NC
21
VBPASS
35
PVREF
9 CEX
8
CLK
FN_MOD
MOD_IN
FN_SYNTH_CS
NC
VMULT4
VMULT3
VMULT2
VMULT1
11
12
14
15
NC
NC
63A 27
TP200
1
Crystal
TCXO
C201
220pF
NU
C202
62pF
NU
C203
2.7pF
NU
C206
NU
0.01uF
R202
150k
47k
470pF
470pF
C209
470pF
NU
100
D201
1SV232
NU
Y201
14R06
NU
Y202
NU
PT08MTPB49
R244
51
TP240
C245
VCO_MOD
FN_VCO_MOD
XTAL2 24
XTAL1 23
5V
C202
C201
62pF
1%
220pF
C211
0.1uF
R206
NU
NU
4
VCC
Y202
45J68
NU
R220
91
R221
91
C220
FN_16_8
16_8_MHZ
22pF
C205
3 OU T VCON 1
16.8MHz
C210
1uF
R205
100
C221
NU
.01uF
GND
Y201
14R06
2
3
L211
OUT
390nH
C212
C213
C214
2.2uF
.01uF
1000pF
.01uF
0V
IN
GND1 GND
4
2
1
D201
.01uF
0V
C203
D220
C223
3V
A3 4
5
A2
6
A1
3 K3
2 K2
1
K1
C222
3V
16.8MHz
FN_3V
.01uF
R202
150K
MODOUT 41
FREFOUT 19
470pF
V_STEER
C244
R243
820
1
3V
R206
0.1uF
TX: 3V
RX: 0V
C206
C208
C243
100K
TR B
SPI_CL K
C207
3.2V to 4.5V
1.5K
R246
FN_TRB
NC
NC
FN_CLK
Reference Oscillator
FN_V_STEER
R245
5
34
20
36
13
47
SYNTH_CS
NC
NC
LOCK: 3V
UNLOCK: 0V
470pF
3
2
1
48
PD_VDD
PRE_VDD
AVDD
DVDD
VRO
VCP
FN_DATA
TEST2 38
TEST1 37
C204
NC
AUX4
AUX3
AUX2
AUX1
U201
30
SFIN
7
DATA
10
MODIN
SPI_DATA_OUT
NC
WARP
INDMULT
SFOUT
ADAPTSW
LOCK
IADAPT
IOUT
39 BIAS2
40 BIAS1
C230
25
16
28
46
4
45
43
C224
2.7pF
3.7%
.01uF
R227
NU
45J68
4 NC
A3
A2 5
6
A1
NC 3
K3
2 K2
1 K1
C228
C227
C226
C225
0.1uF
1000pF
10uF
10uF
D221
5V
FN_5V
R223
R212
5V
0
100
C215
C216
C217
C218
C219
2.2uF
0.1uF
1000pF
2.2uF
0.1uF
Figure 11-20. UHF (438-470 MHz) PCB 8486348Z13-C Synthesizer Schematic Diagram
November 24, 2003
HKLN4216A
UHF 440-470 MHz PCB 84863848Z13-C Schematic Diagrams, Overlays, and Parts Lists
11-27
UHF R2 VCO
V_SF
VCO_VSF
R273
L270
4.5V
V_S F
220nH
C292
330
C274
C270
R277
0.1uF
390pF
SH250
SHIELD
SH251
SHIELD
SH253
SHIELD
390pF
VCO_3V
L272
220nH
0
R284
330
L282
15nH
C285
0.1uF
3V
C272
L292
15nH
1
390pF
L252
27nH
C253
6.2pF
C255
5.6pF
1.6%
0.1%
C254
D251
5.1pF
2%
L254
12.5nH
2%
R274
33
.01uF
L271
NU
R271
5.1K
1
2
3
4
5
6
16
15
20
19
C256
3.9pF
2.5%
R272
5.6K
R253
33
C257
VCO_V_STEER L251
V_STEE R
3.2V to 9.5V
R254
100
12pF
1%
220nH
C251
150pF
C290
10
TX_IADJ
TX_OUT
RX_IADJ
RX_OUT 8
SUPER_FLTR
RX_SWITCH 7
COLL_RFIN
TX_SWITCH 13
RX_BASE
U251
RX_EMITTER 4 50U5
TX_BASE
TX_EMITTER
FLIP_IN
TRB_IN
12
PRESC_OUT
6.8pF
NC
NC
VCO_5R
5R
27nH
C284
R281
8.2K
390pF
C263
4.7pF
C281
2.1%
C286
R285
6.2pF
0
C264
D261
2pF
5%
L264
12.5nH
2%
3.3pF
3.0%
C268
V_SF
0.5pF
R282
910
C282
VCO_RX_INJ
RX_INJ
3.3pF
390pF
3
1
Q280
C265
27nH
18pF
L281
L255
220nH
L262
C291
L291
6.8nH
C252
NU
VCO_TX_INJ
TX_IN J
9 GND_FLAG
11 GND_BUFFERS
17 GND_LOGI
C
C273
C271
14
VCC_BUFFERS
18
VCC_LOGIC
0.1uF
1
1
2
BFS540
L283
NU
R280
4.7K
C283
R283
150
390pF
C266
2.4pF
0.1%
R263
V_SF
33
R262
6.8K
VCO_MOD
R261
C267
R264
100
7.5pF
1.3%
R276
L276
1K
27nH
VCO_PRESC
PRESC
C276
VCO_MOD
22K
D262
L265
220nH
6.8pF
1SV229
VCO_TRB
R275
TR B
RX: 0V
TX: 3V
100
C275
390pF
Figure 11-21. UHF (438-470 MHz) Voltage Controlled Oscillator Schematic Diagram
HKLN4216A
November 24, 2003
11-28
UHF 438-470 MHz Schematic Diagrams, Overlays, and Parts Lists
UHF R2 Tx
PA_USWB+
USWB+
PA_TX_EN A
C170
TX_ENA
4
5
6
390pF
Q171
Q170
EMB10
3
2
1
C171
390pF
SH100
SHIELD
1
C157
C154
0.1uF
390pF
R152
100K 1%
R158
C155
C151
1.5K
0.1uF
390pF
C156
3
.01uF
8
TP150
1
8
Q150
R157
2
1
2.2K
C159
3
U150-1
4
LM2904
390pF
PA_PWR_SET
R153
100K
1%
C150
57R01
390pF
6
7
1
4
100K 1%
U150-2
R156
330
R151
R154
5
2
U151
LM2904
C153
C152
39
R155
100K
1%
390pF
R150
0.1
C172
R120
150
0.47uF
390pF
R162
PWR_SET
10K
R121
150
C158
390pF
C113
390pF
PA_5T
L110
680
220nH
C111
C109
C114
0.1uF
390pF
R106
4.7K
R107
NU
C103
L100
220nH
R111
2K
390pF
C102
C112
C173
0.1uF
390pF
1
PA_TX_IN J
R101
C100
390pF
TX_IN J
R102
820
C105
R105
2.7K
C104
10pF
R103
3K
Q100
1
3.9pF
BFG540W
L102
C107
NU
390pF
390pF
2
3
VGG
VDD
U110
RFIN
RFOUT
RA07M4452M_UHF
GND
4
C117
390pF
D120
MA4PH261
5
C131
NU
C133
NU
C135
NU
L130
L131
L132
17.02nH
C130
NU
C132
6.8pF
17.02nH
C134
6.8pF
J140
C137
17.02nH
C136
4 S1
3 S2
220pF
L140
4.3pF
2 G1
5 G2
43pF
2
4
3.6nH
5.6
R100
820
5.1nH
0.1uF
C121
MM3Z3V9T1
3.9V
390pF
L101
220nH
1uF
VR110
C106
L103
C116
0.1uF
L120
220nH
R110
5T
C115
C120
NU
RX_OUT
15nH
R104
18
C101
0.1uF
C108
390pF
1 T1
6 T2
C124
L121
3
C122
D121
5.1pF
MA4PH261
C123
390pF
M140
ANTENNA_NUT
PA_RX_OU T
3.9pF
NC
C141
NU
1
TAB1
2 TAB2
TAB3 3
TAB4 4
NC
NC
L141
30.54nH
Figure 11-22. UHF (438-470 MHz) PCB 8486348Z13-C Transmitter and Power Control
November 24, 2003
HKLN4216A
UHF 440-470 MHz PCB 84863848Z13-C Schematic Diagrams, Overlays, and Parts Lists
11-29
5V +3 V
3V
SW_B +
SW_B
5V
Controller
VS_AUDIO_SEL
CNTL_PWR_SET
OPT_MI C
PWR_SET
OPT_TX_AUD_FLAT_RETURN
OPT_TX_AUD_RETURN
27
OPT_RX_AUD_SEND_DETECTO R
26
25
OPT_RX_AUD_SEND_UNMUTED
24
23
OPT_RX_AUD_RETURN
22
21
20
19
18
17
16
15
14
13
SW_B +
C503
1000pF
MOD_OUT
4
3
16_8_MHZ
BATT_CHARGE
RESET
uP_CL K
F1200
SQ_DET
SC I
5
ASFIC_CS
6
BOOT_ENA
1000pF
EXT_MIC_PTT
7
HSIO
8
BK1005HM47
LSI O
C500
MOD_OUT
CNTL_16_8_MHZ
VOX
9
BW_SEL
CNTL_MOD_OU T
16_8_MHZ
CH_ACT
11
SPI_DATA_OUT
12
10
C501
CNTL_SPI_CLK
1uF
SPI_CLK
CNTL_SPI_DATA_OUT
SPI_DATA_OUT
R502
100
2
1
30
29
R504
32
31
100
CNTL_SYNTH_CS
SYNTH_CS
R501
100
CNTL_LOCK
LOCK
J460-1
CONNECTOR
ACCESSORY/KEYPA D
CNTL_RSSI
R505
TP40 3
100
C406
RSSI
CNTL_TX_ENA
TX_ENA
TP40 4
150pF
+
SW_B
USWB
BATT_DETECT
SCI
RESET
uP_CLK
ASFIC_CS
F120 0
BOOT_ENA
EXT_MIC_PTT
LSIO
HSIO
VOX
CH_ACT
SQ_DET
SPI_DATA_IN
D3_3V
DISPL_COM_DATA_SEL
VS_RAC
OPT_DATA_READY
SPI_CLK
3V
SW_B +
+
3V
SPI_DATA_OUT
NC
D3_3 V
5V
5V
SW_B +
1000pF
R503 10 0
C50 4
C403 150pF
SPI_CLK
E500
1
C405 150pF
D3_3 V
BW_SEL
AUDI O
VS_GAIN_SEL
3V
DEMOD
CNTL_BW_SEL
OPT_TX_AUD_SEND
28
PWR_SET
CNTL_DEMOD
DEMO D
5V
5R
5T
3V D3_3V
CNTL_USWB+
USWB+
CNTL_5V
5V
TP301
CNTL_5R
5R
CNTL_5T
BACKLIGHT
5T
KEYPAD_ROW
CNTL_3V
SYNTH_C S
3V
KEYPAD_COL
1000pF
1000pF
C404
1000pF
C407
C409
1000pF
C408
1000pF
1000pF
C507
1000pF
C40 2
1000pF
C506
C505
S441
SWITCH
1 A1
3 A2
B1 2
OPT_BUTTON_ 2
FREQ_SEL_ 3
B1 2
B2 4
S440
SWITCH
8
PC0
PC1
PC2
C0
C1
9 7
PC3
GND1
GND
1 A1
3 A2
TX_EN A
BATT_CHARGE
RX_ENA
RX_EN A
VOLUME
VOLUME
ON_OFF
ON_OF F
5T
3V
5R
5V
D3_3V
RESET
OPT_BUTTON_ 1
B1 2
B2 4
S443
SWITCH
RSSI
PTT
B2 4
S442
SWITCH
1 A1
3 A2
MICROPROCESSOR
SWB+
OPT_EN A
VS_CS
VS_IN T
LOCK
USWB +
DISP_EN A
1
2
4
C0
C1
DC_REGULATION
TX_EN A
FREQ_SEL_ 0
FREQ_SEL_ 1
FREQ_SEL_ 2
Schematic Diagram
HKLN4216A
November 24, 2003
11-30
UHF 438-470 MHz Schematic Diagrams, Overlays, and Parts Lists
Microprocessor
D3_3 V
D3_3V
R416
20K
R410
10K
D3_3V
C410
C411
C412
10uF
0.1uF
1000pF
C413
R412
100K
0.1uF
8
6
1
3
7
5
4
1
TP405
VCC
SCK
CS
2
WP
SO
HOLD
SI VSS
0.1uF
Q410
1
TP402
C418
R417
10K
R411
6
1
SC I
820
SH401
SHIELD
SH400
SHIELD
C419
2
1000pF
3
U402
1
R419
4.7K
4
1
X25128-2.7
EEPROM
1
TP401
LSI O
CH_ACT
SPI_DATA_IN
SQ_DET
SPI_DATA_OUT
HSI O
OPT_DATA_READY
SPI_CLK
uP_CLK
C400
R400
NU
D3_3 V
R418
NU
100K
C414
C417
C415
DISPL_COM_DATA_SEL
C416
0.1uF
1000p F 1000pF
1
R445
4.7K
2
D(0)
D(1)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
ON_OFF
30
31
32
33
34
35
36
37
PC0_DATA0
PC1_DATA1
PC2_DATA2
PC3_DATA3
PC4_DATA4
PC5_DATA5
PC6_DATA6
PC7_DATA7
A(18:0)
C430
C431
0.1uF
1000pF
D3_3V
R433
100K
21
22
23
25
26
27
28
29
D0
D1 U404 A0
D2 FLASH A1
D3
A2
A3
D4
A4
D5
A5
D6
A6
D7
A7
6
A8
NC
A9
A10
A11
A12
A13
A14
A15
A16
GND
R431
NU
20
19
18
17
16
15
14
13
3
2
31
1
12
4
5
11
10
C432
C433
0.1uF
1000pF
0
VDD
VDDR
VDDL
AVDD
LVOUT 95
VRL 68
VRH 69
EXTAL 90
XTAL 91
86
85
84
83
82
81
80
79
12
88
39
59
PTT
EXT_MIC_PTT
FREQ_SEL_0
FREQ_SEL_1
VS_RAC
FREQ_SEL_2
FREQ_SEL_3
OPT_BUTTON_1
OPT_BUTTON_2
5V
1
28
A(0)
A(1)
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
A(10)
A(11)
A(12)
A(13)
A(14)
A(15)
A(16)
R430
100K
D(0) 11
D(1) 12
D(2) 13
D(3) 15
D(4) 16
D(5) 17
D(6) 18
D(7) 19
VDD A0
A1
U403 A2
A3
NU A4
SRAM A5
A6
D1
A7
D2
A8
D3
A9
D4
A10
D5
D6
A11
D7
A12
A13
D8
A14
A(0)
A(1)
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
A(10)
A(11)
A(12)
A(13)
A(14)
4
6
C445
C440
C441
C442
C443
C444
C401
.01uF
.01uF
.01uF
.01uF
.01uF
.01uF
.01uF
0.1uF
R440 4.7K
.01uF
200K 1%
R421
100K
1%
C422
D424
3V
.01uF
RED LED
D440
BRPY1204W
20
CS
22
OE
27
WE
VSS
14
A(18)
NU
0.1uF
VOLUME
3
R442
220
SW_B+
C447
R441 4.7K
2
Q440-2
C420
Q440-1
5
10
9
8
7
6
5
4
3
25
24
21
23
2
26
1
C446
SW_B +
A(17)
R434
PE0_AN0
PE1_AN1
PE2_AN2
PE3_AN3
PE4_AN4
PE5_AN5
PE6_AN6
PE7_AN7
67
66
65
64
63
62
61
60
BOOT_ENA
R420
24
R432
NC NC
71
72
73
74
75
76
77
78
D414
D3_3V
8
VCC
30
EN_CE
32
EN_OE
7
EN_WE
RESET 9
AT49LV001N_70VI
D(0)
D(1)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
U401
MC68HC11FL0
A(7)
A(6)
A(5)
A(4)
A(3)
A(2)
A(1)
A(0)
D(7:0)
D3_3 V
VDDSYN 92
XFC 93
PH0_PW 1
PH1_PW 2
PH2_PW 3
PH3_PW 4
PH4_CSI O
PH5_CSGP1
PH6_CSGP2
PH7_CSPROG
22
23
24
25
26
27
28
29
DISP_ENA
47
46
45
44
43
42
41
38
PJ0_CSGP3
PJ1_CSGP4
PJ2
PJ3
PJ4
PJ5
PJ6
PJ7
NC
VSS
VSSR
VSSL
AVSS
NC
RESET
89
96 NC
48
94
4
58
57
13
87
40
70
Q402
3
ECLK
IRQ
XIRQ
RESET
PG7_R_W
MODA_LIR
MODB_VSTBY
PI 7
PI6
PI5
PI4
PI 3
PI 2
PI1
PI0
R446
10K
49
50
51
52
53
54
55
56
1
PG0_XA13
PG1_XA14
PG2_XA15
PG3_XA16
PG4_XA17
PG5_XA18
PG6_AS
PB5_ADDR13
PB4_ADDR12
PB3_ADDR11
PB2_ADDR10
PB1_ADDR9
PBO_ADDR8
Q403
6
16
20
19
17
18
5
1000pF
NC NC
A(13)15
A(12) 21
A(11) 9
A(10) 11
A(9) 10
A(8) 14
BACKLIGH T
2
PA7_PA1_OC1
PA6_OC2_OC1
PA5_OC3_OC1
PA4_OC4_OC1
PA3_IC4_OC5_OC1
PA2_IC1
PA1_IC2
PA0_IC3
SW_B +
3
PF7_ADDR7
PF6_ADDR6
PF5_ADDR5
PF4_ADDR4
PF3_ADDR3
PF2_ADDR2
PF1_ADDR1
PFO_ADDR0
NC
A(14)
A(15)
A(16)
A(17)
A(18)
R414
33K
R415
33K
F1200
7
PB7_ADDR15
8
PB6_ADDR14
SYNTH_CS
PD6_LVIN 3
PD5_SS 2
PD4_SCK 1
PD3_MOSI 100
PD2_MISO 99
PD1_TXD 98
PD0_RXD 97
NC
ASFIC_CS
R413
100K
R443
120
RB520S-30
R424
D3_3V
200K 1%
GREEN LED
C421
R422
100K
R423
100K
.01uF
BATT_DETECT
R425
100K
1%
RSSI
VO X
KEYPAD_CO L
KEYPAD_RO W
LOCK
VS_INT
VS_CS
OPT_ENA
TX_ENA
RX_ENA
Figure 11-23. UHF (438-470 MHz) PCB 8486348Z13-C Controller Interconnect Schematic Diagram
November 24, 2003
HKLN4216A
UHF 440-470 MHz PCB 84863848Z13-C Schematic Diagrams, Overlays, and Parts Lists
11-31
R516
R523
NU
C512
10K
C514
6.8pF
R522
16pF
100K
R514
R512 150K
LM2904
R511
2
100K
3
DEMOD
Q520
8
1
R513
8
R515
7
1
5
IMX1
C518
6
IMX1
6
C460
0.1uF
VR471
C511
C513
R518
220K
220pF
220pF
R519
100K
C519
4
R470
OPT_RX_AUD_SEND_DETECTO R
5
4
5V_A
3
Audio
Q520
5V_A
100K
U510-1
4
2
U510-2
0.1uF
2.2K
OPT_RX_AUD_RETURN
LM2904
R521
NU
R520
100K
3V_A
NC
OPT_RX_AUD_SEND_UNMUTED
R480
0
OPT_TX_AUD_FLAT_RETURN
R517
OPT_TX_AUD_SEND
1uF
OPT_TX_AUD_RETURN
VS_AUDIO_SEL
VS_GAIN_SEL
3V_A
PWR_SET
VOX
3V_A
0.1uF
C452
0.1uF
R462
24K
0.1uF
4.7uF
10 V
SQCAP
VDDDAC
UIO
SQIN
PLCAP
VOX
DACG
DACR
DACU
GND A
DISC
VDDA
12
11
10
9
8
7
6
5
4
3
2
1
C455
.022uF
CH_ACT
13
14
15
16
17
18
19
20
21
22
23
24
SQ_DET
LSIO
HSIO
ASFIC_CS
GCB2
GCB1
GCB0
CHACT
SQDET
LSIO
HSIO
CSX
CLK
DATA
GND
SYN
LCAP
U451
30C53
C456
SPI_DATA_OUT
0.1uF
3V
Not Placed
Not Placed
R517
0
Not Placed
R463
30K
24K
3V_A
R451
47K
5
Q472
2.2K
Q471
3
6
5V
R474
330
C464
C465
C471
0.1uF
1000pF
2.2uF
1
R476
100K
2
4
5
Q470
2
3
D470
2.2K
6
3
A_MOD_OUT
L471
390nH
C474
C473
150pF
150pF
J471
ACCESSORY
CONNECTOR
5 S4
NC
NC
.022uF
0.1uF
1000pF
1 M1
1
2.2K
C493
3 M3
J470-1
R478
C478
C476
2
J491-1
INTERNAL
SPEAKER
.022uF 150pF
R494 C494
330K
2.2uF
7 S1
2 M2
VR474
MMBZ5250B
20V
C475
VR475
15V MMBZ5245B
SW_B+
6 S3
SCI
VR473
20V MMBZ5250B
NC
NU
C458
BOOT_ENA
4 S2
R479
100K
C466
4
OPT_MIC
EXT_MIC_PTT
MOD_OUT
RESET
0.1u F
BATT_CHARGE
R475
180K
R477
C472
0.1uF
6
1
R255
3.9K
1%
NC
0.1uF
R473
680
4
C477
MICROPHONE
CONNECTOR
1
E451
2
16_8_MHZ
BK1005HM471
C459
F1200
0.1uF
uP_CLK
5V_B
C481
.01uF
E452
BK1005HM471
5V
E453
5V_A
2
5V
BK1005HM471
C497
5V_B
C482
.01uF
Not:Placed:NU
3
Q481
Not_Placed:NU 1
0.1uF
R486
100K
Not_Placed:NU
R483
150K
Not_Placed:NU
R487
0
5V_B
8
2
3
C499
82pF
C483
0.1uF
R484
2.2K
1
Not_Placed:NU
4
C484
U480-1
3
R485 100K 1
Q490
R492
0
24K
R490
2.2K
Not_Placed:NU
Not_Placed:NU .033uF
LM2904
Not_Placed:NU
R491
DC Level 0.3 - 0.4 V low
Supply = 7.42
1/2 Supply = 3.22
1
3
2
4
C488
VCC
C480
R469
0.1uF
10
3 J491-3
470pF
U490
TDA854
MODE
5
INPOS OUTNEG
SVR OUTPOS 8
INNEG
C479
150pF
6
GN D
4 J491-4
C489
1
470pF
7
C492
R496
10K
Not_Placed:NU
R497
1MEG
10uF
Q482
Not_Placed:NU
R493 330K
R516
1200pF
R482 330K
0
0.1uF
Not_Placed:NU
Not Placed
0.1uF
Not_Placed:NU
R515
C467
R481 100K
UHF
100k
3V_A
C463
R464
Not_Placed:NU
VHF
48 NC
47
46
45
44
43
42
41
40
39
38
37 NC
C462
1
2
R471
NC
C457
3V
Not Placed
0.1uF
25
26
27
28
29
30
31
32
33
34
35
36
SPI_CLK
R513
MICEXT
GNDRC
MICINT
VDDRC
TXSND
RXRTN
AUXTN
AUDIO
MOD
RXSND
GCB5
GCB4
PLCAP2
NC
VDDSYN
SYN
F1200
GNDDO
GNDD
VDDCP
VDDD
CLK168
GCB3
TXRTN
BW_SEL
1000pF
VR472
D471
3V
C454
5V_A
C453
C470
R460
24K
C451
R472
680
C461
5V_B
Not_Placed:NU
2
UMG5
1
5V_B
C490
470pF
R498
U511
2
3
R488
330K
6
C495
UMG5
4
1
6
1uF
D491
47 K
8
7
6
5
C496
1uF
4
U480-2
NC
Not_Placed:NU
R499
270K
Not_Placed:NU
LM2904
Not_Placed:NU
R489
91K
Not_Placed:NU
2
3
4
R495
5.6K
C498
1uF
Figure 11-24. UHF (438-470 MHz) Microprocessor Circuitry Schematic Diagram
HKLN4216A
November 24, 2003
11-32
UHF 438-470 MHz Schematic Diagrams, Overlays, and Parts Lists
DC Regulation
USWB+
POS
NEG
DATA
U310
TK71750S
VR301
MMBZ5250B
F301
J301
3A
C301
D301
NC
390pF
20V
C303
C304
33uF
.01uF
1 VIN
5
VOUT
3
CTRL
4
BYPASS
GND
2
C310
.01uF
5V
C311
C312
C313
.018uF
10uF
.01uF
Q311
5R
D3_3V
BATT_CHARGE
C314
VR302
MMBZ5250B
C302
C305
C306
390pF
100pF
.01uF
1200pF
NC
R313
10K
20V
R312
20K
R310
100K
Q313
C315
RX_ENA
1
1200pF
Q312
TP302
TX_ENA
5T
R311
100K
D3_3V
R506
100
1200pF
2
2
VOLUME
1
5
SWB+
6
R508
100K
3
1
R509
100K
RESET
TAB2
TAB1
LOW
R507
100
C316
Q493
S444
SWITCH
3 HIGH 4
C323
R322
100K
7
Q494
R510
1
LP2986
330K
ON_OFF
3
D3_3V
U320
6
2
150pF
NC
NC
4 INPUT OUTPUT 5
8 SHUTDOWN
3 SENSE ERROR 7
6
TAP FEEDBACK 2
GND
4
1
D3_3V
C320
.018uF
R320
330K
1%
C321
C322
10uF
.01uF
R321
200K
1%
U330
TK71730S
C331
1
VIN VOUT 5
3
CTRL
4
BYPASS
GND
2
3V
C334
C333
10uF
.01uF
.01uF
Figure 11-25. UHF (438-470 MHz) PCB 8486348Z13-C Audio Circuitry Schematic Diagram
November 24, 2003
HKLN4216A
UHF 440-470 MHz PCB 84863848Z13-C Schematic Diagrams, Overlays, and Parts Lists
J2
MAIN BOARD
CONNECTOR
J2-9
J2-16
J2-17
J2-10
J2-1
J2-2
J2-3
J2-4
J2-6
J2-13
J2-14
J2-15
J2-18
J2-19
J2-12
J2-21
J2-22
J2-23
J2-24
J2-25
J2-26
J2-27
J2-5
J2-7
J2-8
J2-2
J2-11
J2-20
9
16
17
10
1
2
3
4
6
13
14
15
18
19
12
21
22
23
24
25
26
27
5
7
8
8
11
20
11-33
J1
DISPLAY MODULE
CONNECTOR
KEYPAD
LEDBL
LEDBL
DATA
CLK
LCD_SEL
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
C1
150pF
C3
150pF
C6
150pF
C8
150pF
DNF
DNF
DNF
DNF
R1
100K
Vddd
R6
100K
Vddd
C2
C4
150pF
0.1uF
R7
R8
R9
R10
13K
22 K
43 K
130K
J2-29 G1
J2-30 G2
9
8
7
6
5
4
3
2
1
J1-9
J1-8
J1-7
J1-6
J1-5
J1-4
J1-3
J1-2
J1-1
LEDBL
GND
GND
GND
DATA
CLK
LCD_SEL
GND
VDDD
G1 J1-10 GND
G2 J1-11 GND
R2
13 K
S18
SWITCH
1
1
2
3
S17
SWITCH
2
1
2
3
S2 2
SWITCH
6
1
2
3
S2 3
SWITCH
5
1
2
3
S2 5
SWITCH
8
1
2
3
S26
SWITCH
9
1
2
3
S2 7
SWITCH
0
1
COL
ROW
NC
NC
REF
Vddd
Vddd
C5
C7
150pF
DNF
150pF
DNF
STD
LIMITED KEYPAD
C1
NOT PLACED
NOT PLACED
C3
NOT PLACED
NOT PLACED
C6
NOT PLACED
NOT PLACED
C8
NOT PLACED
NOT PLACED
R9
NOT PLACED
R10
NOT PLACED
R2
NOT PLACED
R3
NOT PLACED
R4
NOT PLACED
R5
NOT PLACED
C5
NOT PLACED
NOT PLACED
C7
NOT PLACED
NOT PLACED
S19
SWITCH
3
1
NC
2
3
1
2
3
S20
SWITCH
UP
R3
22 K
S24
SWITCH
4
1
R4
43K
R5
130K
S21
SWITCH
7
1
2
3
2
3
S28
SWITCH
1
2
3
2
3
*
LEDBL
D3
NOT PLACED
D4
NOT PLACED
D5
NOT PLACED
D6
NOT PLACED
D7
NOT PLACED
D8
NOT PLACED
R13
NOT PLACED
R14
NOT PLACED
R15
NOT PLACED
S2 9
SWITCH
#
1
2
3
NC
S3 0
SWITCH
DOW N
1
2
3
NC
S31
SWITCH
F1
1
2
3
QSMG-H799
D2
D10
NC
R11
470
D11
D3
QSMG-H799
QSMG-H799
QSMG-H799
S32
SWITCH
F2
1
2
3
D9
D1
QSMG-H799
D4
QSMG-H799
D5
QSMG-H799
D6
QSMG-H799
D7
QSMG-H799
D8
QSMG-H799
QSMG-H799
R12
470
R1 3
330
R14
330
R15
33 0
Figure 11-26. UHF (438-470 MHz) DC Regulation Schematic Diagram
HKLN4216A
November 24, 2003
11-34
UHF 438-470 MHz Schematic Diagrams, Overlays, and Parts Lists
D301
C478
J470
C489
R483
VR301
L471
D470
R481
C482
4
VR475
1
U480
5
8
R482
VR473
R489
C301
R63
VR302
2
3
3
R61
E452
4
2
1
C
8
VR110
S440
C
C306
2
J301
Q280
L283
2
L281
2
C92
C91
C7
C116
C113
3
L2
C3
C117
J140
C10
CR1
4
L1
M140
C5
C2
C523
C9
S442
C6
L3
S443
U110
C12 C4
C8
C522
SH1
C21 C11
C28 C521
R24
R25
L21
C25
C23 R22
Q21
C47
L31
L55
C36
C32
C46
C33
C230
C233
L33
C34
C29
C38
5
C27
C30
C39
25
C48
C31
L32
L34
C35
C524 C37
C241
C217
C201
Q171
3
Y70
C284
C216
C231
R469
C476
3
C69
C282
R280
C240
37
C205
C473
C305
R282
SH253
R283
R212
C212
U201
SH201
C214 C202
R205
R221
R220
C219
C218
C215
C232
13
C412
R417
C419
R410
C413
C418
R419
R223
C208
C209
R431
C410
C432
C207
C210
R400
C400
C433
R504
C406
22
16
1
7
1
C505
R247
C204
C503
R230
1
C409
C408
C506
R243
C244
4
R496
4
S444
2
C480
R281
C283
R245
L211
C213
U404
C507
C407
U403
R244
C245
SH401
C404
C403
C243
U52
8
C281
R285
17
C402
C504
5
C302
4
5
C286
C446
C252
L251
1
21
8
32
Q403
D251
3
5
C488
J471
F301
C254
C253
L252
C251
8
R442
C263 D261
U402
L262
2
L254
R261
R262
C268
2
C265
FL54
C257
C255
D262 SH250
C264
4
5
C422
C421
R425
R443
Q440
Q402
R445 R446 C500
C430 C431
C266
L264
3
L255
R253
C256
C267
13
C455
R424
R254
R263
1
D424
D471
VR472
C461
R521
R471
R503
R264
L265
FL53
R463
R514 R513
Q472
C477
VR471
4
U451
C460
R462
25
37
7
6
4
C454
C470
R472
R522
C513
C303
R414
C501
E500
R470
R473
R480
C458
C465
C1
S441
Figure 11-27. UHF (438-470 MHz) PCB 8486348Z13-C Keypad Option Schematic Diagram
November 24, 2003
HKLN4216A
UHF 440-470 MHz PCB 84863848Z13-C Schematic Diagrams, Overlays, and Parts Lists
11-35
C141
D440
3
D491
R498
4 Q490
3
R494
R508
Q493
Q481
C481
R509
R484
4
5
R311
C314
R310
TP404
R485
Q482
R495
VR474
Q312
R312
C484
R490
2
C311
R487
C483
R491
R486
R493
3
8
R497
3
U511 4
R492
2
1
U490
5
R488
C490
C498
4
2
4
C105
C479
J491
C316
L103
R104
C108
4
R477
C499
R499
C496
C492
R474
R476
R475
Q470
FL52
3
4
C137
C107
Q100
2 3
C101
C104
R478
C82
C475
R82
R62
R60
D51
C472
C313
U310
U320
R320
C315
Q313
Q311
TP150
C102
R479
R255
C133
R111
C106
R106
R105
C112
L100
C474
C61
R313
SH100
L110
C111
1
L101
C154
Q170
6
L102
C173
R110
R107
C103
L131
1
C109
C120
R103
R81
L81
R162
4
U150
C153
R156
C156
C159 C114
L141
L132
L130
8
R157
3
4
C64
5
R153
R100 R102
3
C65
R158
C171
R101 C100
2
C62
C63
C74
C170 C172
20
C66
C67
C150 R152
R155
Y51
SH50
11
C334
C331
U330
C323
8
C320
C322
R321
E453
C457
R451
C456
R322
R506
1
C131
C115
C155
C471
C310
C312
Q150
4
10
C80
R80
C333
C271
C151
C81
R57
D52
C41
C304
L272
E451
C321
L270
R272
R91
L54
R77
R67
R64
C60
R65
C68
R66
C42
R271
C451
C270
C273
R90
R72
R40
L40
R76
U51
C45
L41
C43
R277
R273
L282
C292
Q70
6
C44
C73 R78
R75
R74
C72
TP1
R284
C285
R274
L271
C466
C497
C70
R73
T42
C90
C274
1
20
C275
C452
L291
U251
C272
R275
L292
10
SH251
11
C276
C453
C463
TP200
TP240
L276
R412 C416
R516 R511
C291
C290
C71
3
4
R276
C13
SH40
R246
C445
C411
R518
C518
C514
C415
C442
C443
C462
C444
D414
8
R464
TP403
U510
5
R415
1
C464
4
R517
R460
R515
C519
R519
R512
C459
TP301
C511
C414
R421
C420
C512
R418
R422
R420
C401
C467
Q520
3
4
R423
C447
R523
R520 Q471
R441
R440
29
28 30
29
C405 R505
C440 C441
76
51
CR41
TP2
R202
C226
C225
R413 R430
SH400
J460
U401
C203
D201
R154
C152
C14
C211
C158
L140
C135
C132
R151
3
C228
D120
C59
C136
C134
C123
C122
C157
R150
C58
D121
L121
R120
Q51
R55
C130
C56
C57
L120
U151
R227
C227
R121
CR51
R54
R53
C93
6
5
4
L53
SH52
T41
R23
Q22
C99
4
SH200
C20
C26
R21
L52
R51
2
1
4
6
Y202
C224
C55
FL51
Y201
C223
D221
32
31
R501
26
R52
2
3
C49
C221
C124
C121
C52 C53
C51
D220
R502
3
C222
L51
2
Q410
R433
C206 R206
C220
R411
4
3
TP302
R434
R432
TP405
TP401
TP402
C417 R416
R20
R510
C495
R507
4 Q494
3
C493
C494
Figure 11-28. UHF (438-470 MHz) Board Component Side View
HKLN4216A
November 24, 2003
11-36
UHF 438-470 MHz Schematic Diagrams, Overlays, and Parts Lists
C2
C4
C5
C7
1
28
g1
J1
C3
C6
R11
D8
G2
9
R5
D1
D6
C1
g2
R9
C8
J2
D4
G1
D11
R10
R6
R1
R7
D9
R2
R8
D7
D5
D3
D10
R15
R14
D2
R13
R12
R4
R3
Component Side
Solder Side
Figure 11-29. UHF (438-470 MHz) PCB 8486348Z13-C Board Solder Side View
November 24, 2003
HKLN4216A
UHF 440-470 MHz PCB 84863848Z13-C Schematic Diagrams, Overlays, and Parts Lists
UHF (438-470 MHz) Radio Parts List
Circuit
Ref
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C20
C21
C23
C25
C26
C27
C28
C29
C30
C31
C32
C33
C34
C35
C36
C37
C38
C39
C41
C42
C43
C44
C45
C46
C47
C48
C49
C51
C52
C53
C55
C56
C57
C58
C59
C60
Motorola
Part No.
2109445U36
2109445U37
2109445U07
Not_Placed
0662057M01
2109445U07
Not_Placed
0662057M01
2109445U37
2109445U34
2113743N30
2109445U25
2109445U07
2109445U07
2113743L07
2113743L07
2113743L07
2113743L07
2113743L07
2109445U32
2109445U27
2109445U23
2109445U40
2109445U23
2109445U22
2109445U41
2109445U22
2109445U31
2109445U39
2109445U31
2109445U26
2109445U26
2113743N23
2113743N31
2113743N33
2113743N24
2113743N31
Not_Placed
Not_Placed
0662057M01
Not_Placed
2113743N48
2113743N28
2109445U26
2113743M24
2113743E20
2113743M24
2113743N16
2113743N12
2113743M24
HKLN4216A
Description
CAP, 13pF
CAP, 15pF
CAP, 1.5pF
CAP, 20pF
RES, 0
CAP, 1.5pF
CAP, 22pF
RES, 0
CAP, 15pF
CAP, 11pF
CAP, 15pF
CAP, 8.2pF
CAP, 1.5pF
CAP, 1.5pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 8pF
CAP, 10pF
CAP, 6.8pF
CAP, 20pF
CAP, 6.8pF
CAP, 6.2pF
CAP, 22pF
CAP, 6.2pF
CAP, 7pF
CAP, 18pF
CAP, 7pF
CAP, 9.1pF
CAP, 9.1pF
CAP, 7.5pF
CAP, 16pF
CAP, 20pF
CAP, 8.2pF
CAP, 16pF
CAP, 10pF
CAP, 10pF
RES, 0
CAP, 3.9pF
CAP, 82pF
CAP, 12pF
CAP, 9.1pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 3.9pF
CAP, 2.7pF
CAP, 0.1uF
Circuit
Ref
C61
C62
C63
C64
C65
C66
C67
C68
C69
C70
C71
C72
C73
C74
C80
C81
C82
C90
C91
C92
C93
C99
C100
C101
C102
C103
C104
C105
C106
C107
C108
C109
C111
C112
C113
C114
C115
C116
C117
C120
C121
C122
C123
C124
C130
C131
C132
C133
C134
C135
C136
Motorola
Part No.
2113743N46
2113743M24
2113743M24
2113743M24
2113743M24
2113743M24
2113743M24
2113743M24
2113743M24
2113743N53
2113743E20
2113743M24
2113743L33
2113743N42
2109445U41
2109445U45
2109445U41
2113743M24
2311049A57
2113743E20
Not_Placed
2113743M24
2113743L07
2113743M24
2113743M24
2113743L07
2113743N26
2113743N16
2113743L07
Not_Placed
2113743L07
2113743M24
2113743L07
2113743M24
2113743L07
2113743L07
2311049A07
2113743M24
2113740F65
Not_Placed
2113743L07
2113740F20
2113740F17
2113743L07
Not_Placed
Not_Placed
2113740F23
Not_Placed
2113740F23
Not_Placed
2113740F18
11-37
Description
CAP, 68pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 130pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 4700pF
CAP, 47pF
CAP, 22pF
CAP, 33pF
CAP, 22pF
CAP, 0.1uF
CAPP, 10uF
CAP, 0.1uF
CAP, 3.6pF
CAP, 0.1uF
CAP, 390pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 390pF
CAP, 10pF
CAP, 3.9pF
CAP, 390pF
CAP, 27pF
CAP, 390pF
CAP, 0.1uF
CAP, 390pF
CAP, 0.1uF
CAP, 390pF
CAP, 390pF
CAPP, 1uF
CAP, 0.1uF
CAP, 390pF
CAP, 8.2pF
CAP, 390pF
CAP, 5.1pF
CAP, 3.9pF
CAP, 390pF
CAP, 3.3pF
CAP, 2.2pF
CAP, 6.8pF
CAP, 2.7pF
CAP, 6.8pF
CAP, 0.5pF
CAP, 4.3pF
Circuit
Ref
C137
C141
C150
C151
C152
C153
C154
C155
C156
C157
C158
C159
C170
C171
C172
C173
C201
C202
C203
C204
C205
C206
C207
C208
C209
C210
C211
C212
C213
C214
C215
C216
C217
C218
C219
C220
C221
C222
C223
C224
C225
C226
C227
C228
C230
C231
C232
C233
C240
C241
C243
Motorola
Part No.
2113740F59
Not_Placed
2113743L07
2113743L07
2113743L07
2113743K18
2113743L07
2113743E20
2113743L41
2113743M24
2113743L07
2113743L07
2113743L07
2113743L07
2113743L07
2113743L07
2113740F59
2109445U52
2109445U13
2113743L09
Not_Placed
Not_Placed
2113743L09
2113743L09
2113743L09
2113743L09
2113743E20
2113743F18
2113743L41
2113743L17
2113743F18
2113743E20
2113743L17
2113743F18
2113743E20
2113743N34
2113743L41
2113743L41
2113743L41
2113743L41
2311049A57
2311049A57
2113743L17
2113743E20
2113743F18
2113743L17
2113743E20
2311049A56
2113743N06
2113743N50
PT08MTPB49
Description
CAP, 220pF
CAP, 8.2pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 0.47uF
CAP, 390pF
CAP, 0.1uF
CAP, .01uF
CAP, 0.1uF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 220pF
CAP, 62pF
CAP, 2.7pF
CAP, 470pF
CAP, 2.7pF
CAP, 1000pF
CAP, 470pF
CAP, 470pF
CAP, 470pF
CAP, 470pF
CAP, 0.1uF
CAP, 2.2uF
CAP, .01uF
CAP, 1000pF
CAP, 2.2uF
CAP, 0.1uF
CAP, 1000pF
CAP, 2.2uF
CAP, 0.1uF
CAP, 22pF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAPP, 10uF
CAPP, 10uF
CAP, 1000pF
CAP, 0.1uF
CAP, 2.2uF
CAP, 1000pF
CAP, 0.1uF
CAPP, 4.7uF
CAP, 1.3pF
CAP, 100pF
CAP, 0.1uF
Circuit
Ref
C244
C245
C251
C252
C253
C254
C255
C256
C257
C263
C264
C265
C266
C267
C268
C270
C271
C272
C273
C274
C275
C276
C281
C282
C283
C284
C285
C286
C290
C291
C292
C301
C302
C303
C304
C305
C306
C310
C311
C312
C313
C314
C315
C316
C320
C321
C322
C323
C331
C333
C334
Motorola
Part No.
0888600M25
2311049A08
0888600M03
Not_Placed
2109445U22
2109445U20
2109445U21
2109445U17
2109445U35
2109445U19
2109445U10
2109445U15
2109445U12
2109445U24
2109445U01
2113743L07
2113743L07
2113743E20
2113743L41
2113743E20
2113743L07
2113743N22
2113743L07
2113743N14
2113743L07
2113743L07
2113743E20
2113743N21
2113743N22
2113743N32
2113743L07
2113743L07
2113743L07
2311049A97
2113743L41
2113743N50
2113741F49
2113743L41
2113743E05
2311049A57
2113743L41
2113743L19
2113743L19
2113743L19
2113743E05
2311049A57
2113743L41
2113743N54
2113743L41
2113743L41
2311049A57
Description
CAP, .01uF
CAPP, 1uF
CAP, 150pF
CAP, 390pF
CAP, 6.2pF
CAP, 5.1pF
CAP, 5.6pF
CAP, 3.9pF
CAP, 12pF
CAP, 4.7pF
CAP, 2pF
CAP, 3.3pF
CAP, 2.4pF
CAP, 7.5pF
CAP, 0.5pF
CAP, 390pF
CAP, 390pF
CAP, 0.1uF
CAP, .01uF
CAP, 0.1uF
CAP, 390pF
CAP, 6.8pF
CAP, 390pF
CAP, 3.3pF
CAP, 390pF
CAP, 390pF
CAP, 0.1uF
CAP, 6.2pF
CAP, 6.8pF
CAP, 18pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAPP, 33uF
CAP, .01uF
CAP, 100pF
CAP, .01uF
CAP, .01uF
CAP, .018uF
CAPP, 10uF
CAP, .01uF
CAP, 1200pF
CAP, 1200pF
CAP, 1200pF
CAP, .018uF
CAPP, 10uF
CAP, .01uF
CAP, 150pF
CAP, .01uF
CAP, .01uF
CAPP, 10uF
November 24, 2003
11-38
Circuit
Ref
C400
C401
C402
C403
C404
C405
C406
C407
C408
C409
C410
C411
C412
C413
C414
C415
C416
C417
C418
C419
C420
C421
C422
C430
C431
C432
C433
C440
C441
C442
C443
C444
C445
C446
C447
C451
C452
C453
C454
C455
C456
C457
C458
C459
C460
C461
C462
C463
C464
C465
C466
UHF 440-470 MHz PCB 84863848Z13-C Schematic Diagrams, Overlays, and Parts Lists
Motorola
Part No.
Not_Placed
2113743M24
2113743L17
2113743L17
2113743L17
2113743L17
2113743L17
2113743L17
2113743L17
2113743L17
2311049A57
2113743M24
2113743L17
2113743M24
2113743M24
2113743L17
2113743L17
2113743L17
2113743M24
2113743L17
2113743L41
2113743L41
2113743L41
2113743M24
2113743L17
2113743M24
2113743L17
2113743L41
2113743L41
2113743L41
2113743L41
2113743L41
2113743L41
2113743L41
2113743M24
2113743M24
2113743E20
2113743E20
2113743E20
2113743L48
2113743E20
2113743E20
2113743E20
2113743E20
2113743E20
2113743L17
2113743E20
2113743E20
2113743E20
2113743L17
Not_Placed
November 24, 2003
Description
CAP, .022uF
CAP, 0.1uF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAPP, 10uF
CAP, 0.1uF
CAP, 1000pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 0.1uF
CAP, 1000pF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, 0.1uF
CAP, 1000pF
CAP, 0.1uF
CAP, 1000pF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, .022uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 1000pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 1000pF
CAP, 470pF
Circuit
Ref
C467
C470
C471
C472
C473
C474
C475
C476
C477
C478
C479
C480
C481
C482
C483
C484
C488
C489
C490
C492
C493
C494
C495
C496
C497
C498
C499
C500
C501
C503
C504
C505
C506
C507
C511
C512
C513
C514
C518
C519
C521
C522
C523
C524
CR1
CR41
CR51
D51
D52
D120
D121
Motorola
Part No.
2113743L19
2113743E20
2113743F18
2113743E20
2113743N54
2113743N54
2113743L48
2113743L48
2113743M24
2113743N54
2113743N54
2113743E20
Not_Placed
2113743L41
2113743E20
Not_Placed
2113743L09
2113743L09
2113743L09
2113743F18
2113743L17
2113743F18
2113743F16
2113743F16
2113743E20
2113743F16
2113743N48
2113743L17
2113743F16
2113743L17
2113743L17
2113743L17
2113743L17
2113743L17
2113740F59
2113743N22
2113740F59
2113743N31
2113743E20
2113743F16
2113743N20
2113743N01
2186463Z09
2186463Z01
4813825A19
4802246J04
4813825A19
4802245J97
4802245J97
4880973Z02
4880973Z02
Description
CAP, 1200pF
CAP, 0.1uF
CAP, 2.2uF
CAP, 0.1uF
CAP, 150pF
CAP, 150pF
CAP, .022uF
CAP, .022uF
CAP, 0.1uF
CAP, 150pF
CAP, 150pF
CAP, 0.1uF
CAP, .01uF
CAP, .01uF
CAP, 0.1uF
CAP, .033uF
CAP, 470pF
CAP, 470pF
CAP, 470pF
CAP, 2.2uF
CAP, 1000pF
CAP, 2.2uF
CAP, 1uF
CAP, 1uF
CAP, 0.1uF
CAP, 1uF
CAP, 82pF
CAP, 1000pF
CAP, 1uF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 220pF
CAP, 6.8pF
CAP, 220pF
CAP, 16pF
CAP, 0.1uF
CAP, 1uF
CAP, 5.6pF
CAP, 0.5pF
CAP, 0.4pF
CAP, 0.2pF
MMBD352
HSMS2829
MMBD352
DAN235ETL
DAN235ETL
MA4PH261
MA4PH261
Circuit
Ref
D201
D220
D221
D251
D261
D262
D301
D414
D440
D470
D471
D491
E451
E452
E453
E500
F301
FL51
FL52
FL53
FL54
J140
J301
J460
J470
J471
J491
L1
L2
L3
L21
L31
L32
L33
L34
L40
L41
L51
L52
L53
L54
L55
L81
L100
L101
L102
L103
L110
L120
L121
L130
Motorola
Part No.
4862824C03
4802233J09
4802233J09
4862824C01
4862824C01
4862824C01
4813833A19
4805129M41
4805729G49
4809924D18
4809924D18
4805129M41
2480640Z01
2480640Z01
2480640Z01
2480640Z01
6580542Z01
9180022M11
9180468V05
9180469V05
9180469V03
0986428Z01
0986237A02
Not_Placed
0985818A01
0980683Z03
2809926G01
2409348J15
2409348J15
2409348J15
2413926N16
2409348J15
2409348J15
2409348J15
2409348J15
2413926K16
2413926K16
2413926N26
2413926K33
2113743N52
2413923A25
2413926N15
2462587N68
2413926K27
2413926K27
2409377M21
2409377M24
2413926K27
2413926K27
2462587V24
2460591C40
Description
1SV232
IMN10
IMN10
1SV229
1SV229
1SV229
MBRM120ET3
MMBD501
BRPY1204W
RB520S-30
RB520S-30
MMBD501
BK1005HM471
BK1005HM471
BK1005HM471
BK1005HM471
FUSE
MXF45
FLTR
CFWC455E
CFWC455G
CONN_J
CONN_J
CONN_J
CONN_J
CONN_J
CONN_P
IDCTR, 9.85nH
IDCTR, 9.85nH
IDCTR, 9.85nH
IDCTR, 22nH
IDCTR, 9.85nH
IDCTR, 9.85nH
IDCTR, 9.85nH
IDCTR, 9.85nH
IDCTR, 27nH
IDCTR, 27nH
IDCTR, 150nH
IDCTR, 680nH
CAP, 120pF
IDCTR, 1.2uH
IDCTR, 18nH
IDCTR, 1uH
IDCTR, 220nH
IDCTR, 220nH
IDCTR, 3.6nH
IDCTR, 5.1nH
IDCTR, 220nH
IDCTR, 220nH
IDCTR, 15nH
IDCTR, 17.02nH
Circuit
Ref
L131
L132
L140
L141
L211
L251
L252
L254
L255
L262
L264
L265
L270
L271
L272
L276
L281
L282
L283
L291
L292
L471
M140
Q21
Q22
Q51
Q70
Q100
Q150
Q170
Q171
Q280
Q311
Q312
Q313
Q402
Q403
Q410
Q440
Q470
Q471
Q472
Q481
Q482
Q490
Q493
Q494
Q520
R20
R21
R22
Motorola
Part No.
2460591C40
2460591C40
2113740F42
2479990M01
2413926K30
2413926N28
2413926N17
2484562T11
2413926N28
2413926N17
2484562T11
2413926N28
2413926N28
Not_Placed
2413926N28
2413926N17
2413926N17
2413926N14
Not_Placed
2413926N10
2413926N14
2413926K30
0286427Z01
4802247J01
4805723X02
4802197J95
4880214G02
4885593U03
4880214G02
4809939C34
4880048M01
4802245J95
4809579E18
4809579E18
4802245J54
4880048M01
4813824A17
4802245J54
5180159R01
4805723X02
4802245J54
4805723X02
Not_Placed
4813824A10
4802245J54
4809579E18
4802245J54
4813824A10
0662057M92
0662057M50
0662057M92
Description
IDCTR, 17.02nH
IDCTR, 17.02nH
CAP, 43pF
IDCTR, 30.54nH
IDCTR, 390nH
IDCTR, 220nH
IDCTR, 27nH
IDCTR, 12.5nH
IDCTR, 220nH
IDCTR, 27nH
IDCTR, 12.5nH
IDCTR, 220nH
IDCTR, 220nH
IDCTR, 220nH
IDCTR, 220nH
IDCTR, 27nH
IDCTR, 27nH
IDCTR, 15nH
IDCTR, 22nH
IDCTR, 6.8nH
IDCTR, 15nH
IDCTR, 390nH
ANTENNA_NUT
BFS505
UMT1
PBR941
MMBT3904
BFG540W
MMBT3904
EMB10
DTC144EKA
BFS540
TP0101T
TP0101T
UMG5
DTC144EKA
MMBT3906
UMG5
IMX1
UMT1
UMG5
UMT1
MMBT3906
MMBT3904
UMG5
TP0101T
UMG5
MMBT3904
RES, 5.6K
RES, 100
RES, 5.6K
HKLN4216A
UHF 440-470 MHz PCB 84863848Z13-C Schematic Diagrams, Overlays, and Parts Lists
Circuit
Ref
R23
R24
R25
R40
R51
R52
R53
R54
R55
R57
R60
R61
R62
R63
R64
R65
R66
R67
R72
R73
R74
R75
R76
R77
R78
R80
R81
R82
R90
R91
R100
R101
R102
R103
R104
R105
R106
R107
R110
R111
R120
R121
R150
R151
R152
R153
R154
R155
R156
R157
R158
Motorola
Part No.
0662057N09
0662057M78
0662057M92
0662057M74
0662057M43
0662057N01
0662057N11
0662057M91
0662057M62
0662057M90
0662057M83
0662057N23
0662057M86
0662057N13
0662057N06
0662057N13
0662057N06
0662057N06
0662057M64
0662057M80
0662057M76
0662057N01
0662057V04
0662057U99
0662057M70
0662057M91
0662057M74
Not_Placed
0662057M43
0662057M79
0662057M72
0662057M20
0662057M72
0662057M85
0662057A07
0662057M84
0662057M90
Not_Placed
0662057M70
0662057M81
0662057C55
0662057C55
0680539Z01
0662057A15
0662057V27
0662057V27
0662057V27
0662057V27
0662057M62
0662057M82
0662057M78
HKLN4216A
Description
RES, 27K
RES, 1.5K
RES, 5.6K
RES, 1K
RES, 51
RES, 12K
RES, 33K
RES, 5.1K
RES, 330
RES, 4.7K
RES, 2.4K
RES, 100K
RES, 3.3K
RES, 39K
RES, 20K
RES, 39K
RES, 20K
RES, 20K
RES, 390
RES, 1.8K
RES, 1.2K
RES, 12K
RES, 12K
RES, 8.2K
RES, 680
RES, 5.1K
RES, 1K
RES, 0
RES, 51
RES, 1.6K
RES, 820
RES, 5.6
RES, 820
RES, 3K
RES, 18
RES, 2.7K
RES, 4.7K
RES, 300
RES, 680
RES, 2K
RES, 150
RES, 150
RES, 0.1
RES, 39
RES, 100K
RES, 100K
RES, 100K
RES, 100K
RES, 330
RES, 2.2K
RES, 1.5K
Circuit
Ref
R162
R202
R205
R206
R212
R220
R221
R223
R227
R230
R243
R244
R245
R246
R247
R253
R254
R255
R261
R262
R263
R264
R271
R272
R273
R274
R275
R276
R277
R280
R281
R282
R283
R284
R285
R310
R311
R312
R313
R320
R321
R322
R400
R410
R411
R412
R413
R414
R415
R416
R417
Motorola
Part No.
0662057M98
0662057N27
0662057M50
Not_Placed
0662057C01
0662057M49
0662057M49
0662057M50
Not_Placed
0662057N07
0662057M72
0662057M43
0662057M78
0662057N23
0662057N06
0662057M38
0662057M50
0662057U91
0662057N07
0662057M94
0662057M38
0662057M50
0662057M91
0662057M92
0662057M62
0662057M38
0662057M50
0662057M74
0662057B47
0662057M90
0662057M96
0662057M73
0662057M54
0662057M62
0662057M01
0662057N23
0662057N23
0662057N06
0662057N06
0662057V43
0662057V35
0662057N23
Not_Placed
0662057M98
0662057M72
0662057N23
0662057N23
0662057N11
0662057N11
0662057N06
0662057M98
11-39
Description
RES, 10K
RES, 150K
RES, 100
RES, 100
RES, 0
RES, 91
RES, 91
RES, 100
RES, 150K
RES, 22K
RES, 820
RES, 51
RES, 1.5K
RES, 100K
RES, 20K
RES, 33
RES, 100
RES, 3.9K
RES, 22K
RES, 6.8K
RES, 33
RES, 100
RES, 5.1K
RES, 5.6K
RES, 330
RES, 33
RES, 100
RES, 1K
RES, 0
RES, 4.7K
RES, 8.2K
RES, 910
RES, 150
RES, 330
RES, 0
RES, 100K
RES, 100K
RES, 20K
RES, 20K
RES, 330K
RES, 200K
RES, 100K
RES, 100K
RES, 10K
RES, 820
RES, 100K
RES, 100K
RES, 33K
RES, 33K
RES, 20K
RES, 10K
Circuit
Ref
R418
R419
R420
R421
R422
R423
R424
R425
R430
R431
R432
R433
R434
R440
R441
R442
R443
R445
R446
R451
R460
R462
R463
R464
R469
R470
R471
R472
R473
R474
R475
R476
R477
R478
R479
R480
R481
R482
R483
R484
R485
R486
R487
R488
R489
R490
R491
R492
R493
R494
R495
Motorola
Part No.
0662057N23
0662057M90
0662057V35
0662057V27
0662057N23
0662057N23
0662057V35
0662057V27
0662057N23
Not_Placed
0662057M01
0662057N23
Not_Placed
0662057M90
0662057M90
0662057A33
0662057A27
0662057M90
0662057M98
0662057N15
0662057N08
0662057N08
0662057N08
0662057N10
0662057M26
0662057M82
0662057M82
0662057M70
0662057M70
0662057A37
0662057N29
0662057N23
0662057M82
0662057M82
0662057N23
0662057B47
0662057N23
0662057N35
0662057N27
Not_Placed
0662057N23
0662057N23
0662057M01
0662057N35
0662057A96
Not_Placed
0662057M01
0662057N08
0662057N35
0662057V43
0662057M92
Description
RES, 100K
RES, 4.7K
RES, 200K
RES, 100K
RES, 100K
RES, 100K
RES, 200K
RES, 100K
RES, 100K
RES, 100K
RES, 0
RES, 100K
RES, 100K
RES, 4.7K
RES, 4.7K
RES, 220
RES, 120
RES, 4.7K
RES, 10K
RES, 47K
RES, 24K
RES, 24K
RES, 24K
RES, 30K
RES, 10
RES, 2.2K
RES, 2.2K
RES, 680
RES, 680
RES, 330
RES, 180K
RES, 100K
RES, 2.2K
RES, 2.2K
RES, 100K
RES, 0
RES, 100K
RES, 330K
RES, 150K
RES, 2.2K
RES, 100K
RES, 100K
RES, 0
RES, 330K
RES, 91K
RES, 2.2K
RES, 0
RES, 24K
RES, 330K
RES, 330K
RES, 5.6K
Circuit
Ref
R496
R497
R498
R499
R501
R502
R503
R504
R505
R506
R507
R508
R509
R510
R511
R512
R513
R514
R515
R516
R517
R518
R519
R520
R521
S440
S441
S442
S443
S444
SH1
SH40
SH50
SH52
SH100
SH200
SH201
SH250
SH251
SH253
SH400
SH401
T41
T42
U51
U52
U110
U150
U151
U201
U251
Motorola
Part No.
Not_Placed
0662057N47
0662057N15
0662057N33
0662057M50
0662057M50
0662057M50
0662057M50
0662057M50
0662057M50
0662057M50
0662057N23
0662057N23
0662057N35
0662057N23
0662057N27
0662057N23
0662057N23
0662057M01
Not_Placed
Not_Placed
0662057N31
0662057N23
0662057N23
0662057N23
4080710Z06
4070354A01
4070354A01
4070354A01
1880619Z02
2686421Z01
2686419Z01
2686423Z01
2686424Z01
2686418Z01
2686424Z01
2686423Z01
2686425Z01
2686425Z01
2686422Z01
2686420Z01
2686420Z01
2580541Z02
2580541Z02
5186144B01
5109522E10
0186438Z02
5113818A01
2484657R01
5185963A27
5105750U54
Description
RES, 10K
RES, 1MEG
RES, 47K
RES, 270K
RES, 100
RES, 100
RES, 100
RES, 100
RES, 100
RES, 100
RES, 100
RES, 100K
RES, 100K
RES, 330K
RES, 100K
RES, 150K
RES, 100K
RES, 100K
RES, 0
RES, 0
RES, 0
RES, 220K
RES, 100K
RES, 100K
RES, 100K
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
XFMR
XFMR
SA616
TC7W04F
RA07M4452M_UHF
LM2904
57R01
63A27
50U54
November 24, 2003
11-40
UHF 440-470 MHz PCB 84863848Z13-C Schematic Diagrams, Overlays, and Parts Lists
Circuit
Ref
U310
U320
U330
U401
U402*
U403
U404*
U451
U480
U490
U510
U511
VR110
VR301
VR302
VR471
VR472
VR473
VR474
VR475
Y51
Y70
Y201*
Y202
Motorola
Part No.
Description
5102478J01
TK71750S
5185963A55 LP2986
5102479J01
TK71730S
5102226J56
MC68HC11FL0
5102463J64
X25128-2.7
Not_Placed
SRM2B256
5102480J01
AT49LV001N_70VI
5185130C53 30C53
5113818A01 LM2904
5108858K99 TDA8541
5113818A01 LM2904
4802245J54
UMG5
4813830A86 MM3Z3V9T1
4813830A33 MMBZ5250B
4813830A33 MMBZ5250B
4813830A18 MMBZ5235B
4813830A09 MMBZ5226B
4813830A33 MMBZ5250B
4813830A33 MMBZ5250B
4880140L20
MMBZ5245B
4802245J84
TSS2_44_395MHZ
9186145B02 45B02
4880114R06 14R06
Not_Placed
45J68
* Motorola Depot Servicing only
Circuit
Ref
J2
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
Motorola
Part No.
0909059E18
0662057A97
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
0662057A97
0662057A76
0662057A81
NOTPLACED
NOTPLACED
0662057A41
0662057A41
NOTPLACED
NOTPLACED
NOTPLACED
Description
CONN_J
RES, 100K
RES, 13K
RES, 22K
RES, 43K
RES, 130K
RES, 100K
RES, 13K
RES, 22K
RES, 43K
RES, 130K
RES, 470
RES, 470
RES, 330
RES, 330
RES, 330
UHF (438-470 MHz) Keypad Board Parts List
Circuit
Ref
C1
C2
C3
C4
C5
C6
C7
C8
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
J1
Motorola
Part No.
NOTPLACED
2113740F55
NOTPLACED
2113743E20
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
4809496B11
4809496B11
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
4809496B11
4809496B11
4809496B11
0986632Z01
November 24, 2003
Description
CAP, 150pF
CAP, 150pF
CAP, 150pF
CAP, 0.1uF
CAP, 150pF
CAP, 150pF
CAP, 150pF
CAP, 150pF
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
CONN_J
HKLN4216A
UHF 465-495 MHz PCB 8486634Z02 Schematic Diagrams, Overlays, and Parts Lists
11-41
Chapter 11 UHF 465-495 MHz PCB 8486634Z02 Schematic Diagrams, Overlays, and Parts Lists
UHF R3
USWB+
5V
5V
5T
5T
5R
5R
3V
USWB +
5T
USWB
5T
3V
5V
5R
+
USWB +
TX_ENA
TX_ENA
5R
PWR_SET
5V
TX_UHF_R3
PWR_SET
DEMOD
DEMOD
BW_SEL
BW_SEL
RX_FE_UHF_R3
RX_BE
CONTROLLER
RSSI
IF_OUT
IF_IN
RX_IN
RX_OUT
TX_INJ
RSSI
RX_INJ
MOD_OUT
MOD_IN
16_8_MHZ
16_8_MHZ
SYNTH_CS
SYNTH_CS
5V
3V
5R
3V
5V
3V
5R
3V
PRESC
VCO_UHF_R3
V_STEER
SYNTH_UHF_R3
SPI_CLK
V_SF
V_STEER
V_SF
VCO_MOD
SPI_DATA_OUT
TX_INJ
TRB
LOCK
RX_INJ
SPI_CLK
VCO_MOD
SPI_DATA_OUT
PRESC
TRB
LOCK
Figure 11-30. UHF (465-495 MHz) Radio Circuit Block Diagram
HKLN4216A
November 24, 2003
11-42
UHF 465-495 MHz Schematic Diagrams, Overlays, and Parts Lists
Chapter 11 UHF 465-495 MHz Schematic Diagrams, Overlays, and Parts Lists
UHF R3 Front End
FE_5R
5R
1
SH1
SHIELD
SH40
SHIELD
C26
R21
91
R20
5.6K
390pF
4
2
5
Q22
UMT1
C20
1
1
C25
6
390pF
3
390pF
R23
27K
L55
22nH
C99
0.1uF
R22
5.6K
C23
C521
R24
4.2V
C523
C2
IF 1
RX_IN
C1
8pF
1.25%
1.1%
9.1pF
L1
9.85nH
2%
C3
C5
4.3pF
2.3%
C4
1.25%
8pF
10pF
1.0%
6%
0.5pF
1.3%
7.5pF
C12
L2
9.85nH
2%
NU
C9
C8
C6
C7
2.3%
4.3pF
9.1pF
1.1%
CR1
C11
1.6%
6.2pF
3
L3
9.85nH
2%
1
C10
1.2K
0.79V
1
C522
3
C21
3.7%
2.7pF
0.5pF
Q21
1%
68pF
390pF
BFS505
R25
5.6K
L21
33nH
2.7pF
3.7%
2
390pF
FE_IF_OUT
L52
IF_OUT
680nH
R51
51
C524
C28
C27
8.2pF
1.2%
1.0%
10pF
C29
C31
1.8%
1.6%
5.6pF
6.2pF
C30
C4 6
L31
9.85nH
16pF
NU
2%
1%
C35
C34
C32
C38
C37
1.2%
1.6%
6.2pF
8.2pF
C36
L33
9.85nH
18pF
2%
1%
1.6%
1.6%
6.2pF
6.2pF
C33
C47
L32
9.85nH
24pF
NU
2%
1%
C51
L51
150nH
6%
0.5pF
2%
5.1pF
L34
9.85nH
2%
C48
4
T41
0
C39
C49
2.7pF
3.7%
NU
82pF
C13
3
6.7%
1.5pF
2
C14
1
6
RF BALUN
5
NC
6.7%
1.5pF
NC
1
IO1
3
4
T42
IO3
IO4
4
3
IO2
2
C42
FE_RF_IN J
RX_IN J
C41
10pF
1.0%
1.2%
8.2pF
L40
L41
27nH
27nH
C43
20pF
1%
C44
1.1%
9.1pF
6
C45
15pF
1%
R40
1K
2
1
IF BALUN
5
NC
CR41
HSMS2829
NC
1
TP1
TP2
1
Figure 11-31. UHF (465-495 MHz) PCB8486634Z02-O Receiver Front End Schematic Diagram
November 24, 2003
HKLN4216A
UHF 465-495 MHz PCB 8486634Z02 Schematic Diagrams, Overlays, and Parts Lists
11-43
RX Back End (Overtone)
7
1
C68
U52-1
TC7W04F
FL53
CFWC455E
R65
39K
0.1uF
1
IN
R66
20K
OUT 2
0V for 12.5kHz
C69
R63
39K
D51
0.1uF
2
1 IN
1
SH50
SHIELD
8
U52-4
PWR_GND
3
5
SH52
SHIELD
1
GND
3
2
C74
R62
3.3K
NC
VCC
1
OUT 2
R67
20K
GND1
U52-3
TC7W04F
D52
R64
20K
FL54
CFWC455G
3
5V
4
2
6
R60
2.4K
1
3
4
1 IN
4
C63
C62
FL52
FLTR
9180468V04
0.1uF
0.1uF
OU T 2
C64
GND
C66
C65
0.1uF
0.1uF
47pF
5V
C67
C61
0.1uF
R72
390
0.1uF
3
3
Q70
1
5V
C91
0.1uF
10uF
1 RFIN
2 RFIN_DEC
51
C90
C92
0.1uF
R53
FL51
MXF45
44.85MHz
0.1uF
R54
5.1K
OUT 6
3 IN
C52
18pF
C53
9.1pF
1.1%
0.74V
120pF
C93
GND2
2 CC1
5 CC2
GND1
IF_IN
1
3.6pF
NU
C57
3.9pF
C59
0.1uF
2.7pF
3
L53
IF_IN
C58
3.05V
33K
C55
R52
12K
1
Q51
CR51
3
L54
1.2uH
2%
SA616
LIMOUT 11
GND
15
C70
R73
1.8K
130pF
R74
1.2K
Y70
45B02
455KHz
1
R57
4.7K
2
3
C81
2
C80
R80
5.1K
33pF
1%
PBR941
1
U51
C71
0.1uF
C60
0.1uF
2
VCC
9 RSSI_FEED
6
2
10 QUADIN
R90
LIMIN 14
LIM_DEC1 13
LIM_DEC2 12
5V
5 RSSIOUT
R55
330
0.1uF
7 AUDIO_FEED
8 AUDIOOU T
C56
IFAMP_DEC1
IFAMPI N
IFAMP_DEC2
IFAMPOUT
1.6K
3 OSCOUT
4 OSCIN
3.39V
5V
19
18
17
16
MMBT3904
R91
MIXOUT 20
IF_5V
47pF
GND2
BW_SE L
3
TC7W04F
5V for 25kHz
GND2
U52-2
R61
100K
IF_BAND_SEL
GND1
5V
R75
IF_RSSI
2.1V When -47 dBm @ antenna
RSSI
22pF
1%
C72
12K
0.1uF
4
R81
1K
C82
Y51
TSS2_44_395MHZ
44.395MHz
3 OU T
L81
1uH
33pF
1%
R82
NU
IN
GND1 GND
4
2
1
R76
12K
1%
R77
R78
8.2K
1%
680
IF_DEMOD
1.5V
DEMOD
C73
4700pF
Figure 11-32. UHF (465-495 MHz) Receiver Back End Schematic Diagram
HKLN4216A
November 24, 2003
11-44
UHF 465-495 MHz Schematic Diagrams, Overlays, and Parts Lists
UHF R3 Synthesizer
FN_V_SF
4.5V
R230
20K
R247
18K
V_SF
C231
C232
C233
1000pF
0.1uF
4.7uF
SH201
SHIELD
SH200
SHIELD
FN_LOCK
6
22
33
44
LOCK
NC
NC
NC
C241
FN_PRESC
NC
NC
42 CCOMP
18 REFSEL
NC
32 PREIN
27 SFBASE
26 SFCAP
PRESC
C240
1.3pF
7.7%
100pF
31 NC3
29 NC2
17 NC1
2.2uF
NC
NC
NC
NC
VMULT4
VMULT3
VMULT2
VMULT1
11
12
14
15
NC
R245
C243
TX: 3V
RX: 0V
NC
R246
TR B
NC
NC
C210
470pF
470pF
470pF
470pF
FN_3V
3V
1
FN_VCO_MOD
C202
C201
62pF
1%
220pF
1uF
R205
100
C211
0.1uF
C206
R206
NU
NU
.01uF
3
OU T
220pF
NU
C202
62pF
NU
C203
2.7pF
NU
C206
NU
0.01uF
R202
150k
47k
R206
NU
100
D201
1SV232
NU
Y201
14R06
NU
Y202
NU
45J68
OU T VCON
16.8MHz
GND
IN
R221
22
16_8_MHZ
22pF
C205
C221
NU
1
.01uF
3V
3 K3
2 K2
1 K1
0V
2 Y202
45J68
NU
C222
3V
A3 4
A2 5
A1 6
.01uF
0V
D220
1
C223
D201
GND1 GND
4
C201
3
1000pF
TCXO
4
R220
22
C220
FN_16_8
R202
150K
VCC
16.8MHz
2.2uF
Crystal
C245
5V
XTAL2 24
XTAL1 23
C214
TP240
VCO_MOD
390nH
Reference Oscillator
TP200
R244
51
Y201
14R06
C213
.01uF
0888600M25
100K
FN_TRB
L211
C212
1
NC
NC
5
34
20
36
13
47
C209
V_STEER
C244
R243
820
0.1uF
SPI_CL K
C208
FN_V_STEER
3.2V to 4.5V
1.5K
FN_CLK
C207
UNLOCK: 0V
470pF
MODOUT 41
FREFOUT 19
PD_VDD
PRE_VDD
AVDD
DVDD
VRO
VCP
FN_SYNTH_CS
SYNTH_CS
TEST2 38
TEST1 37
3
2
1
48
21 VBPASS
35 PVREF
9 CEX
8
CLK
FN_MOD
MOD_IN
NC
AUX4
AUX3
AUX2
AUX1
63A 27
30 SFI N
7 DATA
10 MODIN
FN_DATA
SPI_DATA_OUT
25
16
28
46
4
45
43
WARP
INDMULT
SFOUT
ADAPTSW
LOCK
IADAPT
IOUT
U201
39 BIAS2
40 BIAS1
C230
LOCK: 3V
C204
DGND
AGND
PRE_GND
PD_GND
1
1
C203
2
.01uF
2.7pF
3.7%
C224
.01uF
NC 3
A3 4
A2 5
A1 6
K3
2 K2
1 K1
R227
39K
C228
C227
C226
C225
0.1uF
1000pF
10uF
10uF
NC
D221
5V
FN_5V
R223
R212
5V
0
100
C215
C216
C217
C219
C218
2.2uF
0.1uF
1000pF
0.1uF
2.2uF
Figure 11-33. UHF (465-495 MHz) PCB8486634Z02-O Synthesizer Schematic Diagram
November 24, 2003
HKLN4216A
UHF 465-495 MHz PCB 8486634Z02 Schematic Diagrams, Overlays, and Parts Lists
11-45
UHF R3 VCO
V_SF
L270
4.5V
220nH
330
390pF
3V
R274
33
390pF
27nH
D251
C253
C255
1.6%
6.2pF
C254
1.1%
9.1pF
C256
3.3pF
3.0%
L254
12.5nH
2%
3.9pF
2.5%
.01uF
L271
NU
R271
5.1K
R272
6.2K
1
2
3
4
5
6
16
15
20
19
R253
TX_IADJ
RX_IADJ
SUPER_FLTR
COLL_RFIN
RX_BASE
RX_EMITTER
TX_BASE
TX_EMITTER
FLIP_IN
TRB_IN
47
R
V_STEE
3.2V to 9.5V
C257
R254
100
L251
12pF
1%
220nH
C251
C252
150pF
NU
L282
18nH
VCC_BUFFERS 14
18
VCC_LOGIC
C273
L252
C285
0.1uF
0.1uF
C271
VCO_V_STEER
390pF
C272
1
1
1
C292
VCO_3V
0.1uF
L272
220nH
SH253
SHIELD
SH251
SHIELD
0
C274
C270
SH250
SHIELD
R277
R273
R284
NU
C290
10
TX_OU T
RX_OUT 8
U251
27nH
1.6%
6.2pF
7
RX_SWITCH
13
TX_SWITCH
C264
D261
3.0pF
3.3%
L264
8nH
2%
C268
V_SF
PRESC_OUT
VCO_5R
12
13pF
1%
L281
5R
18nH
C284
R281
8.2K
C286
R285
3.9pF
2.5%
0
C281
R282
390pF
910
C282
4.3pF
3
2.3%
VCO_RX_IN J
RX_IN J
1
Q280
2
BFS540
R280
4.7K
L283
NU
C283
R283
130
390pF
C266
3.0pF
3.3%
0.5pF
20%
R263
V_SF
33
R262
7.5K
R261
C291
NC
NC
390pF
5.6pF
1.8%
TX_IN J
L291
6.8nH
C265
C263
VCO_TX_INJ
1.5%
6.8pF
L255
220nH
L262
VCO_MOD
L292
15nH
4 50U5
9 GND_FLAG
11 GND_BUFFERS
17 GND_LOGI C
VCO_VSF
V_S F
C267
R264
100
9.1pF
1.1%
R276
L276
NU
27nH
VCO_PRESC
PRESC
C276
VCO_MOD
22K
L265
220nH
D262
3.6pF
2.8%
1SV229
RX: 0V
TX: 3V
VCO_TRB
R275
TRB
100
C275
390pF
Figure 11-34. UHF (465-495 MHz) Voltage Controlled Oscillator Schematic Diagram
HKLN4216A
November 24, 2003
11-46
UHF 465-495 MHz Schematic Diagrams, Overlays, and Parts Lists
UHF R3 Tx
PA_USWB+
USWB+
PA_TX_EN A
TX_ENA
C170
5
4
390pF
6
Q170
Q171
EMB10
SH100
SHIELD
2
3
1
C525
1
C172
390pF
C157
C154
0.1uF
390pF
R120
150
390pF
R152
R158
C160
1.5K
0.1uF
C151
390pF
C156
Q150
3
8
1
R157
2
1
U150-1
LM2904
PA_PWR_SET
57R01
2
4
100K 1%
2.2K
3
C159
4
390pF
C153
R156
330
U150-2
C152
LM2904
390pF
C121
R151
R154
5
8
U151
390pF
6
7
1
.01uF
TP150
C150
R121
150
100K 1%
R153
100K
1%
L120
220nH
39
R155
100K
1%
390pF
R150
0.1
J140
C137
4 S1
0.47uF
220pF
3 S2
R162
2 G1
5 G2
PWR_SET
10K
C158
R110
390pF
R111
2K
390pF
L140
15.92nH
220nH
680
C111
1
T1
6 T2
L110
C112
C171
0.1uF
390pF
VR110
3.9V
C113
C115
C116
390pF
1uF
0.1uF
M140
ANTENNA_NUT
PA_5T
MM3Z3V9T1
4813830A86
5T
C109
C114
0.1uF
390pF
R107
NU
R106
4.7K
NC
C141
L100
220nH
1pF
2
C103
390pF
PA_TX_INJ
R101
C100
390pF
TX_IN J
R100
820
5.6
R102
820
C102
L101
220nH
L102
C105
1
6.8pF
R103
3K
NU
Q100
2
C107
NU
390pF
VDD
C117
D120
390pF
MA4PH261
RFOUT 4
RFIN
GN D
5
C131
C133
C135
NU
L130
NU
L131
NU
L132
20.45nH
17.02nH
3
4
NC
NC
L141
30.54nH
17.02nH
C130
C132
C134
C136
NU
6.8pF
6.8pF
4.3pF
RA07M4452M_UHF
L121
C120
C124
C101
C108
0.1uF
390pF
390pF
0603
15nH
NU
R104
18
TAB3
TAB4
U110
BFG540W
7.5nH
C104
1
5.1nH
0.1uF
R105
2.7K
VGG
C106
L103
3
1 TAB1
2 TAB2
C122
D121
C123
2.7pF
MA4PH261
3.9pF
PA_RX_OU T
RX_OUT
Figure 11-35. UHF (465-495 MHz) PCB8486634Z02-O Transmitter and Power Control Schematic Diagram
November 24, 2003
HKLN4216A
UHF 465-495 MHz PCB 8486634Z02 Schematic Diagrams, Overlays, and Parts Lists
11-47
5V +3 V
3V
SW_B +
SW_B
5V
Controller
VS_AUDIO_SEL
CNTL_PWR_SET
OPT_MI C
PWR_SET
OPT_TX_AUD_FLAT_RETURN
OPT_TX_AUD_RETURN
SW_B +
25
OPT_RX_AUD_SEND_UNMUTED
24
23
OPT_RX_AUD_RETURN
22
21
VS_GAIN_SEL
10
9
C500
8
7
1000pF
6
5
4
C503
1000pF
BATT_CHARGE
RESET
SC I
ASFIC_CS
F1200
uP_CL K
BOOT_ENA
HSIO
16_8_MHZ
C501
CNTL_SPI_CLK
1uF
SPI_CLK
CNTL_SPI_DATA_OUT
SPI_DATA_OUT
R502
100
3
2
1
30
29
R504
32
31
100
CNTL_SYNTH_CS
SYNTH_CS
R501
100
CNTL_LOCK
LOCK
J460-1
CONNECTOR
ACCESSORY/KEYPA D
CNTL_RSSI
R505
TP40 3
100
C406
RSSI
CNTL_TX_ENA
TX_ENA
TP40 4
150pF
+
SW_B
USWB
BATT_DETECT
SCI
RESET
ASFIC_CS
uP_CLK
F120 0
BOOT_ENA
EXT_MIC_PTT
HSIO
VOX
LSIO
CH_ACT
SQ_DET
SPI_DATA_OUT
D3_3V
DISPL_COM_DATA_SEL
VS_RAC
OPT_DATA_READY
SPI_CLK
3V
SW_B +
+
3V
SPI_DATA_IN
NC
D3_3 V
5V
5V
SW_B +
1000pF
R503 10 0
C50 4
C403 150pF
BK1005HM47
EXT_MIC_PTT
11
VOX
12
E500
1
LSI O
13
MOD_OUT
16_8_MHZ
SQ_DET
15
BW_SEL
CNTL_MOD_OU T
MOD_OUT
CNTL_16_8_MHZ
CH_ACT
16
14
3V
SPI_DATA_OUT
19
17
SPI_CLK
20
18
C405 150pF
D3_3 V
26
BW_SEL
AUDI O
OPT_RX_AUD_SEND_DETECTO R
27
DEMOD
CNTL_BW_SEL
OPT_TX_AUD_SEND
28
PWR_SET
CNTL_DEMOD
DEMO D
5V
5R
5T
3V D3_3V
CNTL_USWB+
USWB+
CNTL_5V
5V
TP301
CNTL_5R
5R
CNTL_5T
BACKLIGHT
5T
KEYPAD_ROW
CNTL_3V
SYNTH_C S
3V
KEYPAD_COL
1000pF
1000pF
C404
1000pF
C407
C409
1000pF
C408
1000pF
1000pF
C507
1000pF
C40 2
1000pF
C506
C505
S441
SWITCH
1 A1
3 A2
B1 2
OPT_BUTTON_ 2
FREQ_SEL_ 3
B1 2
B2 4
S440
SWITCH
8
PC0
PC1
PC2
C0
C1
9 7
PC3
GND1
GND
1 A1
3 A2
TX_EN A
BATT_CHARGE
5T
3V
5R
5V
D3_3V
RESET
RX_ENA
RX_EN A
VOLUME
VOLUME
ON_OFF
ON_OF F
OPT_BUTTON_ 1
B1 2
B2 4
S443
SWITCH
RSSI
PTT
B2 4
S442
SWITCH
1 A1
3 A2
MICROPROCESSOR
SWB+
OPT_EN A
VS_CS
VS_IN T
LOCK
USWB +
DISP_EN A
1
2
4
C0
C1
FREQ_SEL_ 0
DC_REGULATION
TX_EN A
FREQ_SEL_ 1
FREQ_SEL_ 2
Figure 11-36. UHF (465-495 MHz) Controller Interconnect Schematic Diagram
HKLN4216A
November 24, 2003
11-48
UHF 465-495 MHz Schematic Diagrams, Overlays, and Parts Lists
Microprocessor
D3_3 V
D3_3V
R416
20K
R410
10K
D3_3V
C410
C411
C412
10uF
0.1uF
1000pF
C413
R412
100K
0.1uF
8
6
1
3
7
5
4
1
TP405
VCC
SCK
CS
2
WP
SO
HOLD
SI VSS
0.1uF
Q410
1
TP402
C418
R417
10K
R411
6
1
SC I
820
SH401
SHIELD
SH400
SHIELD
C419
2
1000pF
3
U402
1
R419
4.7K
4
1
X25128-2.7
EEPROM
1
TP401
LSI O
CH_ACT
SPI_DATA_IN
SQ_DET
SPI_DATA_OUT
HSI O
OPT_DATA_READY
SPI_CLK
uP_CLK
C400
R400
NU
D3_3 V
R418
NU
100K
C414
C417
C415
DISPL_COM_DATA_SEL
C416
0.1uF
1000p F 1000pF
1
R445
4.7K
2
D(0)
D(1)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
ON_OFF
30
31
32
33
34
35
36
37
PC0_DATA0
PC1_DATA1
PC2_DATA2
PC3_DATA3
PC4_DATA4
PC5_DATA5
PC6_DATA6
PC7_DATA7
A(18:0)
C430
C431
0.1uF
1000pF
D3_3V
R433
100K
21
22
23
25
26
27
28
29
D0
D1 U404 A0
D2 FLASH A1
D3
A2
A3
D4
A4
D5
A5
D6
A6
D7
A7
6
A8
NC
A9
A10
A11
A12
A13
A14
A15
A16
GND
R431
NU
20
19
18
17
16
15
14
13
3
2
31
1
12
4
5
11
10
C432
C433
0.1uF
1000pF
0
VDD
VDDR
VDDL
AVDD
LVOUT 95
VRL 68
VRH 69
EXTAL 90
XTAL 91
86
85
84
83
82
81
80
79
12
88
39
59
PTT
EXT_MIC_PTT
FREQ_SEL_0
FREQ_SEL_1
VS_RAC
FREQ_SEL_2
FREQ_SEL_3
OPT_BUTTON_1
OPT_BUTTON_2
5V
1
28
A(0)
A(1)
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
A(10)
A(11)
A(12)
A(13)
A(14)
A(15)
A(16)
R430
100K
D(0) 11
D(1) 12
D(2) 13
D(3) 15
D(4) 16
D(5) 17
D(6) 18
D(7) 19
VDD A0
A1
U403 A2
A3
NU A4
SRAM A5
A6
D1
A7
D2
A8
D3
A9
D4
A10
D5
D6
A11
D7
A12
A13
D8
A14
A(0)
A(1)
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
A(10)
A(11)
A(12)
A(13)
A(14)
4
6
C445
C440
C441
C442
C443
C444
C401
.01uF
.01uF
.01uF
.01uF
.01uF
.01uF
.01uF
0.1uF
R440 4.7K
.01uF
200K 1%
R421
100K
1%
C422
D424
3V
.01uF
RED LED
D440
BRPY1204W
20
CS
22
OE
27
WE
VSS
14
A(18)
NU
0.1uF
VOLUME
3
R442
220
SW_B+
C447
R441 4.7K
2
Q440-2
C420
Q440-1
5
10
9
8
7
6
5
4
3
25
24
21
23
2
26
1
C446
SW_B +
A(17)
R434
PE0_AN0
PE1_AN1
PE2_AN2
PE3_AN3
PE4_AN4
PE5_AN5
PE6_AN6
PE7_AN7
67
66
65
64
63
62
61
60
BOOT_ENA
R420
24
R432
NC NC
71
72
73
74
75
76
77
78
D414
D3_3V
8
VCC
30
EN_CE
32
EN_OE
7
EN_WE
RESET 9
AT49LV001N_70VI
D(0)
D(1)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
U401
MC68HC11FL0
A(7)
A(6)
A(5)
A(4)
A(3)
A(2)
A(1)
A(0)
D(7:0)
D3_3 V
VDDSYN 92
XFC 93
PH0_PW 1
PH1_PW 2
PH2_PW 3
PH3_PW 4
PH4_CSI O
PH5_CSGP1
PH6_CSGP2
PH7_CSPROG
22
23
24
25
26
27
28
29
DISP_ENA
47
46
45
44
43
42
41
38
PJ0_CSGP3
PJ1_CSGP4
PJ2
PJ3
PJ4
PJ5
PJ6
PJ7
NC
VSS
VSSR
VSSL
AVSS
NC
RESET
89
96 NC
48
94
4
58
57
13
87
40
70
Q402
3
ECLK
IRQ
XIRQ
RESET
PG7_R_W
MODA_LIR
MODB_VSTBY
PI 7
PI6
PI5
PI4
PI 3
PI 2
PI1
PI0
R446
10K
49
50
51
52
53
54
55
56
1
PG0_XA13
PG1_XA14
PG2_XA15
PG3_XA16
PG4_XA17
PG5_XA18
PG6_AS
PB5_ADDR13
PB4_ADDR12
PB3_ADDR11
PB2_ADDR10
PB1_ADDR9
PBO_ADDR8
Q403
6
16
20
19
17
18
5
1000pF
NC NC
A(13)15
A(12) 21
A(11) 9
A(10) 11
A(9) 10
A(8) 14
BACKLIGH T
2
PA7_PA1_OC1
PA6_OC2_OC1
PA5_OC3_OC1
PA4_OC4_OC1
PA3_IC4_OC5_OC1
PA2_IC1
PA1_IC2
PA0_IC3
SW_B +
3
PF7_ADDR7
PF6_ADDR6
PF5_ADDR5
PF4_ADDR4
PF3_ADDR3
PF2_ADDR2
PF1_ADDR1
PFO_ADDR0
NC
A(14)
A(15)
A(16)
A(17)
A(18)
R414
33K
R415
33K
F1200
7
PB7_ADDR15
8
PB6_ADDR14
SYNTH_CS
PD6_LVIN 3
PD5_SS 2
PD4_SCK 1
PD3_MOSI 100
PD2_MISO 99
PD1_TXD 98
PD0_RXD 97
NC
ASFIC_CS
R413
100K
R443
120
RB520S-30
R424
D3_3V
200K 1%
GREEN LED
C421
R422
100K
R423
100K
.01uF
BATT_DETECT
R425
100K
1%
RSSI
VO X
KEYPAD_CO L
KEYPAD_RO W
LOCK
VS_INT
VS_CS
OPT_ENA
TX_ENA
RX_ENA
Figure 11-37. UHF (465-495 MHz) PCB8486634Z02-O Microprocessor Circuitry Schematic Diagram
November 24, 2003
HKLN4216A
UHF 465-495 MHz PCB 8486634Z02 Schematic Diagrams, Overlays, and Parts Lists
11-49
R516
R523
NU
C512
10K
C514
6.8pF
R522
16pF
100K
R514
R512 150K
LM2904
R511
2
100K
3
DEMOD
Q520
8
1
R513
8
R515
7
1
5
IMX1
C518
6
IMX1
6
C460
0.1uF
VR471
C511
C513
R518
220K
220pF
220pF
R519
100K
C519
4
R470
OPT_RX_AUD_SEND_DETECTO R
5
4
5V_A
3
Audio
Q520
5V_A
100K
U510-1
4
2
U510-2
0.1uF
2.2K
OPT_RX_AUD_RETURN
LM2904
R521
NU
R520
100K
3V_A
NC
OPT_RX_AUD_SEND_UNMUTED
R480
0
OPT_TX_AUD_FLAT_RETURN
R517
OPT_TX_AUD_SEND
1uF
OPT_TX_AUD_RETURN
VS_AUDIO_SEL
VS_GAIN_SEL
3V_A
PWR_SET
VOX
3V_A
0.1uF
C452
0.1uF
R462
24K
0.1uF
4.7uF
10 V
SQCAP
VDDDAC
UIO
SQIN
PLCAP
VOX
DACG
DACR
DACU
GND A
DISC
VDDA
12
11
10
9
8
7
6
5
4
3
2
1
C455
.022uF
CH_ACT
13
14
15
16
17
18
19
20
21
22
23
24
SQ_DET
LSIO
HSIO
ASFIC_CS
GCB2
GCB1
GCB0
CHACT
SQDET
LSIO
HSIO
CSX
CLK
DATA
GND
SYN
LCAP
U451
30C53
C456
SPI_DATA_OUT
0.1uF
3V
Not Placed
Not Placed
R517
0
Not Placed
R463
30K
24K
3V_A
R451
47K
5
Q472
2.2K
Q471
3
6
5V
R474
330
C464
C465
C471
0.1uF
1000pF
2.2uF
1
R476
100K
2
4
5
Q470
2
3
D470
2.2K
6
3
A_MOD_OUT
L471
390nH
C474
C473
150pF
150pF
J471
ACCESSORY
CONNECTOR
5 S4
NC
NC
.022uF
0.1uF
1000pF
1 M1
1
2.2K
C493
3 M3
J470-1
R478
C478
C476
2
J491-1
INTERNAL
SPEAKER
.022uF 150pF
R494 C494
330K
2.2uF
7 S1
2 M2
VR474
MMBZ5250B
20V
C475
VR475
15V MMBZ5245B
SW_B+
6 S3
SCI
VR473
20V MMBZ5250B
NC
NU
C458
BOOT_ENA
4 S2
R479
100K
C466
4
OPT_MIC
EXT_MIC_PTT
MOD_OUT
RESET
0.1u F
BATT_CHARGE
R475
180K
R477
C472
0.1uF
6
1
R255
3.9K
1%
NC
0.1uF
R473
680
4
C477
MICROPHONE
CONNECTOR
1
E451
2
16_8_MHZ
BK1005HM471
C459
F1200
0.1uF
uP_CLK
5V_B
C481
.01uF
E452
BK1005HM471
5V
E453
5V_A
2
5V
BK1005HM471
C497
5V_B
C482
.01uF
Not:Placed:NU
3
Q481
Not_Placed:NU 1
0.1uF
R486
100K
Not_Placed:NU
R483
150K
Not_Placed:NU
R487
0
5V_B
8
2
3
C499
82pF
C483
0.1uF
R484
2.2K
1
Not_Placed:NU
4
C484
U480-1
3
R485 100K 1
Q490
R492
0
24K
R490
2.2K
Not_Placed:NU
Not_Placed:NU .033uF
LM2904
Not_Placed:NU
R491
DC Level 0.3 - 0.4 V low
Supply = 7.42
1/2 Supply = 3.22
1
3
2
4
C488
VCC
C480
R469
0.1uF
10
3 J491-3
470pF
U490
TDA854
MODE
5
INPOS OUTNEG
SVR OUTPOS 8
INNEG
C479
150pF
6
GN D
4 J491-4
C489
1
470pF
7
C492
R496
10K
Not_Placed:NU
R497
1MEG
10uF
Q482
Not_Placed:NU
R493 330K
R516
1200pF
R482 330K
0
0.1uF
Not_Placed:NU
Not Placed
0.1uF
Not_Placed:NU
R515
C467
R481 100K
UHF
100k
3V_A
C463
R464
Not_Placed:NU
VHF
48 NC
47
46
45
44
43
42
41
40
39
38
37 NC
C462
1
2
R471
NC
C457
3V
Not Placed
0.1uF
25
26
27
28
29
30
31
32
33
34
35
36
SPI_CLK
R513
MICEXT
GNDRC
MICINT
VDDRC
TXSND
RXRTN
AUXTN
AUDIO
MOD
RXSND
GCB5
GCB4
PLCAP2
NC
VDDSYN
SYN
F1200
GNDDO
GNDD
VDDCP
VDDD
CLK168
GCB3
TXRTN
BW_SEL
1000pF
VR472
D471
3V
C454
5V_A
C453
C470
R460
24K
C451
R472
680
C461
5V_B
Not_Placed:NU
2
UMG5
1
5V_B
C490
470pF
R498
U511
2
3
R488
330K
6
C495
UMG5
4
1
6
1uF
D491
47 K
8
7
6
5
C496
1uF
4
U480-2
NC
Not_Placed:NU
R499
270K
Not_Placed:NU
LM2904
Not_Placed:NU
R489
91K
Not_Placed:NU
2
3
4
R495
5.6K
C498
1uF
Figure 11-38. UHF (465-495 MHz) Audio Circuitry Schematic Diagram
HKLN4216A
November 24, 2003
11-50
UHF 465-495 MHz Schematic Diagrams, Overlays, and Parts Lists
DC Regulation
USWB+
J301
POS
NEG
DATA
U310
TK71750S
VR301
MMBZ5250B
F301
3A
C301
D301
NC
390pF
20V
C303
C304
33uF
.01uF
1 VIN
5
VOUT
3
4 CTRL
BYPASS
GND
2
C310
.01uF
5V
C311
C312
C313
.018uF
10uF
.01uF
Q311
5R
D3_3V
BATT_CHARGE
C314
VR302
MMBZ5250B
C302
C305
C306
390pF
100pF
.01uF
1200pF
NC
R313
10K
20V
R312
20K
R310
100K
Q313
C315
RX_ENA
1
1200pF
Q312
TP302
TX_ENA
5T
R311
100K
D3_3V
R506
100
1200pF
2
2
VOLUME
1
5
SWB+
6
R508
100K
3
1
R509
100K
RESET
TAB2
TAB1
LOW
R507
100
C316
Q493
S444
SWITCH
3 HIGH 4
C323
R322
100K
7
Q494
R510
1
LP2986
330K
ON_OFF
3
D3_3V
U320
6
2
150pF
NC
NC
4 INPUT OUTPUT 5
8 SHUTDOWN
3 SENSE ERROR 7
6
TAP FEEDBACK 2
GND
4
1
D3_3V
C320
.018uF
R320
330K
1%
C321
C322
10uF
.01uF
R321
200K
1%
U330
TK71730S
C331
1
VIN VOUT 5
3
CTRL
4
BYPASS
GND
2
3V
C334
C333
10uF
.01uF
.01uF
Figure 11-39. UHF (465-495 MHz) PCB8486634Z02-O DC Regulation Schematic Diagram
November 24, 2003
HKLN4216A
UHF 465-495 MHz PCB 8486634Z02 Schematic Diagrams, Overlays, and Parts Lists
J2
MAIN BOARD
CONNECTOR
J2-9
J2-16
J2-17
J2-10
J2-1
J2-2
J2-3
J2-4
J2-6
J2-13
J2-14
J2-15
J2-18
J2-19
J2-12
J2-21
J2-22
J2-23
J2-24
J2-25
J2-26
J2-27
J2-5
J2-7
J2-8
J2-2
J2-11
J2-20
9
16
17
10
1
2
3
4
6
13
14
15
18
19
12
21
22
23
24
25
26
27
5
7
8
8
11
20
11-51
J1
DISPLAY MODULE
CONNECTOR
KEYPAD
LEDBL
LEDBL
DATA
CLK
LCD_SEL
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
C1
150pF
C3
150pF
C6
150pF
C8
150pF
DNF
DNF
DNF
DNF
R1
100K
Vddd
R6
100K
Vddd
C2
C4
150pF
0.1uF
R7
R8
R9
R10
13K
22 K
43 K
130K
J2-29 G1
J2-30 G2
9
8
7
6
5
4
3
2
1
J1-9
J1-8
J1-7
J1-6
J1-5
J1-4
J1-3
J1-2
J1-1
LEDBL
GND
GND
GND
DATA
CLK
LCD_SEL
GND
VDDD
G1 J1-10 GND
G2 J1-11 GND
R2
13 K
S18
SWITCH
1
1
2
3
S17
SWITCH
2
1
2
3
S2 2
SWITCH
6
1
2
3
S2 3
SWITCH
5
1
2
3
S2 5
SWITCH
8
1
2
3
S26
SWITCH
9
1
2
3
S2 7
SWITCH
0
1
2
3
COL
ROW
NC
NC
REF
Vddd
Vddd
C5
C7
150pF
DNF
150pF
DNF
STD
LIMITED KEYPAD
C1
NOT PLACED
NOT PLACED
C3
NOT PLACED
NOT PLACED
C6
NOT PLACED
NOT PLACED
C8
NOT PLACED
NOT PLACED
R9
NOT PLACED
R10
NOT PLACED
R2
NOT PLACED
R3
NOT PLACED
R4
NOT PLACED
R5
NOT PLACED
C5
NOT PLACED
NOT PLACED
C7
NOT PLACED
NOT PLACED
S19
SWITCH
3
1
NC
2
3
1
2
3
S20
SWITCH
UP
R3
22 K
S24
SWITCH
4
1
R4
43K
R5
130K
S21
SWITCH
7
1
2
3
2
3
S28
SWITCH
1
2
3
*
LEDBL
D3
NOT PLACED
D4
NOT PLACED
D5
NOT PLACED
D6
NOT PLACED
D7
NOT PLACED
D8
NOT PLACED
R13
NOT PLACED
R14
NOT PLACED
R15
NOT PLACED
S2 9
SWITCH
#
1
2
3
NC
S3 0
SWITCH
DOW N
1
2
3
NC
1
2
3
S31
SWITCH
F1
QSMG-H799
D2
D10
NC
R11
470
D11
D3
QSMG-H799
QSMG-H799
QSMG-H799
S32
SWITCH
F2
1
2
3
D9
D1
QSMG-H799
D4
QSMG-H799
D5
QSMG-H799
D6
QSMG-H799
D7
QSMG-H799
D8
QSMG-H799
QSMG-H799
R12
470
R1 3
330
R14
330
R15
33 0
Figure 11-40. UHF (465-495 MHz) Keypad Board Schematic Diagram
HKLN4216A
November 24, 2003
11-52
UHF 465-495 MHz Schematic Diagrams, Overlays, and Parts Lists
4
J470
2
R483
VR301
C489
3
L471
D470
R481
C482
4
1
U480
VR475
5
8
R61
R482
R63
VR473
R489
C301
C69
E452
3
4
2
1
C
8
VR110
S440
C
C306
2
J301
Q280
L281
C92
C240
37
C7
C116
C12 C4
C8
C6
C3
C117
J140
4
L1
M140
S442
C523
C2
L21
C10
R24 C23 R22
R25
C5
CR1
C21 C11
3
L2
C9
S443
C521
SH1
C46
C25
L3
C32
Q21
C47
C522
C28
L55
C36
C34
C33
C230
C233
L33
C30
C39
25
C48 C38
U110
C113
L31
C29
C31
L32
L34
5
C27
C35
C524 C37
C241
U201
SH201
C201
R469
C476
C473
2
C91
C217
C216
C231
4
R496
4
VR302
S444
2
3
5
Q171
2
C284
C232
C205
U52
8
3
Y70
SH253
R283
R212
C212
R247
C215
5
R281
L283
C244
C214 C202
R205
R221
R220
C219
C218
R230
13
R417
R223
C412
C413
C419
R419
R410
C410
C208
C418
R431
C432
C209
R400
C400
C433
R504
C207
22
C210
7
16
1
1
C505
R243
1
C204
C506
C503
R245
R244
L211
C213
U404
C409
C408
C406
C243
C245
SH401
C507
C407
U403
3
5
C480
J471
C305
C281 R282
R285
C283
C504
C282
C286
C252
L251
C251
D251
C402
C403
C488
C302
4
C254
17
21
8
7
6
F301
R280
L252
C446
32
Q403
2
L254
C253
C263
L262
C257
C255
C268
SH250
R261
R262
1
C430 C431
C265
D261
8
R442
R445 R446 C500 C404
Q402
U402
R424
D262
4
5
C422
C421
R425
R443
Q440
C264
C256
C266
L264
C455
FL54
L255
R253
C267
13
3
2
1
R254
FL53
C303
L265
D424
D471
R521
C461
R471
R503
R264
R263
R514 R513
4
U451
C460
R462
25
37
C470
VR472
R522
VR471
C477
Q472
R472
C513
C458
C454
R463
R414
C501
E500
R470
R473
R480
C465
C478
D301
C1
S441
Figure 11-41. UHF (465-495 MHz) PCB8486634Z02-O Board Component Side View
November 24, 2003
HKLN4216A
UHF 465-495 MHz PCB 8486634Z02 Schematic Diagrams, Overlays, and Parts Lists
11-53
L140
C137
C133
SH100
TP150
R111
C106
C107
D440
L103
3
C105
4
R104
3
Q100
R499
R488
D491
R498
4
3
C495
R494
R507
Q493
Q481
C481
R509
VR474
R485
Q482
R508
R495
R486
R487 R484
C484
3
4
R490
C483
R491
8
R497
Q490
U511
R492
1
U490
5
C490
C498
4
2
4
C102
2
C499
2
R311
C314
R310
TP404
C316
L131
C132
L110
R476
R493
4
C315
L141
C112
C479
C492
3
4
5
R322
R506
C472
C474
R477
J491
Q312
U320
R320
C322
Q311
L100
R105 C108
L101
C101
Q470
R479
R312
R313
Q313
C323
8
C320
R255
C312
R106
R103
L102
R475 R474
C311
C313
U310
C310
FL52
R162
1
C104
C334
U330
C333 C331
C304
C61
C154
R478
C475
L81
C82
R62
D51
R60
C74
R102
C103
L132
C496
R82
C41
C42
D52
R100
R81
C64
R67
3
2
C63
C65
C153
R101 C100
C171
R158
C120
1
6
Q170
3
4
C172
Y51
20
C66
R156
C525
C170
1
C115
C111 R110
C156
R107
C114
C109
C141
L130
8
R157
Q150
4
SH50
11
C160
C134
C135
U150
R155
C150 R152
R153
C80
R80
C81
10
C62
R40
C271
R321
C321
C151
R57
R77
C67
R64
L270
E453
C457
R451
C456
E451
C68
R66
R91
L54
C471
C273
L272
R65
L40
C274
C270
R76
U51
C45
L41
1
L271
C292
R272
L282 R273 R271
U251
SH251
20
R274
C43
10
R277
L292
C44
C60
R90
R74
Q70
6
C73 R78
R75
TP1
T42
C90
C72
C70
R73
3
R284
C285
C290
11
C453
C275
L291
L276
R275
R511
C466
SH40
TP2
TP200
TP240
C445
R412 C416
C440
C441
C411
C442
R516
C497
C291
R276
C272
C463
C71
R72
C451
R518
C518
C514
R246
4
C276
C452
C462
C415
C443
8
R415
D414
R464
TP403
U510
5
R418
1
C464
4
R517
R460
R515
Q471
C519
R519
R512
C459
C511
C420
TP301
C467
Q520
R520
R421
C401
C512
R420
C444
C414
C447
R523
3
4
R422
R441
R440
29
28 30
29
R423
C13
CR41
76
51
C405 R505
C14
C203
D201
R202
C226
C225
R413 R430
SH400
J460
U401
C211
R154
C152
C136
C123
C131
C158
C159
4
3
C157
5
Y202
4
2
R151
D121
L121
D120
C58
C130
R150
C124
C122
R120
R55
C59
C228
L120
C57
R227
C227
R121
U151
C56
R54
Q51
C93
5
4
L53
6
CR51
C55
R53
SH52
4
T41
R23
L52
R51
FL51
6
SH200
Q22
C99
C26
C51
C223
C224
1
R52
2
3
Y201
26
C121
C52 C53
C49
C221
D221
31
32
R501
L51
2
R502
3
C222
D220
R433
R432
C206 R206
C220
R411
Q410
4
3
TP302
R434
R21
TP405
TP401
TP402
C417 R416
C20
R20
4 Q494
3
R510
C493
C494
Figure 11-42. UHF (465-495 MHz) Board Solder Side View
HKLN4216A
November 24, 2003
11-54
UHF 465-495 MHz Schematic Diagrams, Overlays, and Parts Lists
C2
C4
C5
C7
1
28
g1
J1
C3
C6
R11
D8
G2
9
R5
D1
D6
C1
g2
R9
C8
J2
D4
G1
D11
R10
R6
R1
R7
D9
R2
R8
D7
D5
D3
D10
R15
R14
D2
R13
R12
R4
R3
Component Side
Solder Side
Figure 11-43. UHF (465-495 MHz) PCB8486634Z02-O Keypad Board
November 24, 2003
HKLN4216A
UHF 465-495 MHz PCB 8486634Z02 Schematic Diagrams, Overlays, and Parts Lists
UHF (465-495 MHz) Radio Parts List
Circuit
Ref
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C20
C21
C23
C25
C26
C27
C28
C29
C30
C31
C32
C33
C34
C35
C36
C37
C38
C39
C41
C42
C43
C44
C45
C46
C47
C48
C49
C51
C52
C53
C55
C56
C57
C58
C59
C60
Motorola
Part No.
2109445U32
2109445U26
2109445U18
2109445U27
2109445U32
2109445U24
2109445U26
2109445U18
2109445U22
2109445U13
2113743L07
Not_Placed
2109445U07
2109445U07
2113743L07
2109445U53
2113743L07
2113743L07
2113743L07
2109445U25
2109445U27
2109445U22
2109445U38
2109445U21
2109445U22
2109445U42
2109445U22
2109445U22
2109445U39
2109445U25
2109445U20
2109445U13
2109445U27
2109445U25
2109445U40
2109445U26
2109445U37
Not_Placed
Not_Placed
0662057M01
Not_Placed
2113743N48
2109445U39
2109445U26
2113743M24
2113743E20
2113743M24
2113743N16
2113743N12
2113743M24
HKLN4216A
Description
CAP, 8pF
CAP, 9.1pF
CAP, 4.3pF
CAP, 10pF
CAP, 8pF
CAP, 7.5pF
CAP, 9.1pF
CAP, 4.3pF
CAP, 6.2pF
CAP, 2.7pF
CAP, 390pF
CAP, 8.2pF
CAP, 1.5pF
CAP, 1.5pF
CAP, 390pF
CAP, 68pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 8.2pF
CAP, 10pF
CAP, 6.2pF
CAP, 16pF
CAP, 5.6pF
CAP, 6.2pF
CAP, 24pF
CAP, 6.2pF
CAP, 6.2pF
CAP, 18pF
CAP, 8.2pF
CAP, 5.1pF
CAP, 2.7pF
CAP, 10pF
CAP, 8.2pF
CAP, 20pF
CAP, 9.1pF
CAP, 15pF
CAP, 10pF
CAP, 10pF
RES, 0
CAP, 3.9pF
CAP, 82pF
CAP, 18pF
CAP, 9.1pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 3.9pF
CAP, 2.7pF
CAP, 0.1uF
Circuit
Ref
C61
C62
C63
C64
C65
C66
C67
C68
C69
C70
C71
C72
C73
C74
C80
C81
C82
C90
C91
C92
C93
C99
C100
C101
C102
C103
C104
C105
C106
C107
C108
C109
C111
C112
C113
C114
C115
C116
C117
C120
C121
C122
C123
C124
C130
C131
C132
C133
C134
C135
C136
Motorola
Part No.
2113743N46
2113743M24
2113743M24
2113743M24
2113743M24
2113743M24
2113743M24
2113743M24
2113743M24
2113743N53
2113743E20
2113743M24
2113743L33
2113743N42
2109445U41
2109445U45
2109445U45
2113743M24
2311049A57
2113743E20
Not_Placed
2113743M24
2113743L07
2113743M24
2113743M24
2113743L07
2113743N22
Not_Placed
2113743L07
Not_Placed
2113743L07
2113743M24
2113743L07
2113743M24
2113743L07
2113743L07
2311049A07
2113743M24
2113740F65
Not_Placed
2113743L07
2113740F13
2113740F17
2113740F65
Not_Placed
Not_Placed
2113740F23
Not_Placed
2113740F23
Not_Placed
2113740F18
11-55
Description
CAP, 68pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 130pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 4700pF
CAP, 47pF
CAP, 22pF
CAP, 33pF
CAP, 33pF
CAP, 0.1uF
CAPP, 10uF
CAP, 0.1uF
CAP, 3.6pF
CAP, 0.1uF
CAP, 390pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 390pF
CAP, 6.8pF
CAP, 3.9pF
CAP, 390pF
CAP, 27pF
CAP, 390pF
CAP, 0.1uF
CAP, 390pF
CAP, 0.1uF
CAP, 390pF
CAP, 390pF
CAPP, 1uF
CAP, 0.1uF
CAP, 390pF
CAP, 8.2pF
CAP, 390pF
CAP, 2.7pF
CAP, 3.9pF
CAP, 390pF
CAP, 3.3pF
CAP, 2.2pF
CAP, 6.8pF
CAP, 2.7pF
CAP, 6.8pF
CAP, 0.5pF
CAP, 4.3pF
Circuit
Ref
C137
C141
C150
C151
C152
C153
C154
C156
C157
C158
C159
C160
C170
C171
C172
C201
C202
C203
C204
C205
C206
C207
C208
C209
C210
C211
C212
C213
C214
C215
C216
C217
C218
C219
C220
C221
C222
C223
C224
C225
C226
C227
C228
C230
C231
C232
C233
C240
C241
C243
C244
Motorola
Part No.
2113740F59
2113740F03
2113743L07
2113743L07
2113743L07
2113743K18
2113743L07
2113743L41
2113743M24
2113743L07
2113743L07
2113743E20
2113743L07
2113743L07
2113743L07
2113740F59
2109445U52
2109445U13
2113743L09
Not_Placed
Not_Placed
2113743L09
2113743L09
2113743L09
2113743L09
2113743E20
2113743F18
2113743L41
2113743L17
2113743F18
2113743E20
2113743L17
2113743F18
2113743E20
2113743N34
2113743L41
2113743L41
2113743L41
2113743L41
2311049A57
2311049A57
2113743L17
2113743E20
2113743F18
2113743L17
2113743E20
2311049A56
2109445U06
2113743N50
0886641Z01
0888600M25
Description
CAP, 220pF
CAP, 1pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 0.47uF
CAP, 390pF
CAP, .01uF
CAP, 0.1uF
CAP, 390pF
CAP, 390pF
CAP, 0.1uF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAP, 220pF
CAP, 62pF
CAP, 2.7pF
CAP, 470pF
CAP, 2.7pF
CAP, 1000pF
CAP, 470pF
CAP, 470pF
CAP, 470pF
CAP, 470pF
CAP, 0.1uF
CAP, 2.2uF
CAP, .01uF
CAP, 1000pF
CAP, 2.2uF
CAP, 0.1uF
CAP, 1000pF
CAP, 2.2uF
CAP, 0.1uF
CAP, 22pF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAPP, 10uF
CAPP, 10uF
CAP, 1000pF
CAP, 0.1uF
CAP, 2.2uF
CAP, 1000pF
CAP, 0.1uF
CAPP, 4.7uF
CAP, 1.3pF
CAP, 100pF
CAP, 0.1uF
CAP, .01uF
Circuit
Ref
C245
C251
C252
C253
C254
C255
C256
C257
C263
C264
C265
C266
C267
C268
C270
C271
C272
C273
C274
C275
C276
C281
C282
C283
C284
C285
C286
C290
C291
C292
C301
C302
C303
C304
C305
C306
C310
C311
C312
C313
C314
C315
C316
C320
C321
C322
C323
C331
C333
C334
C400
Motorola
Part No.
2311049A08
0888600M03
Not_Placed
2109445U22
2109445U15
2109445U26
2109445U17
2109445U35
2109445U22
2109445U14
2109445U21
2109445U14
2109445U26
2109445U01
2113743L07
2113743L07
2113743E20
2113743L41
2113743E20
2113743L07
2109445U16
2113743L07
2109445U18
2113743L07
2113743L07
2113743E20
2109445U17
2109445U23
2109445U36
2113743L07
2113743L07
2113743L07
2311049A97
2113743L41
2113743N50
2113741F49
2113743L41
2113743E05
2311049A57
2113743L41
2113743L19
2113743L19
2113743L19
2113743E05
2311049A57
2113743L41
2113743N54
2113743L41
2113743L41
2311049A57
Not_Placed
Description
CAPP, 1uF
CAP, 150pF
CAP, 390pF
CAP, 6.2pF
CAP, 3.3pF
CAP, 9.1pF
CAP, 3.9pF
CAP, 12pF
CAP, 6.2pF
CAP, 3.0pF
CAP, 5.6pF
CAP, 3.0pF
CAP, 9.1pF
CAP, 0.5pF
CAP, 390pF
CAP, 390pF
CAP, 0.1uF
CAP, .01uF
CAP, 0.1uF
CAP, 390pF
CAP, 3.6pF
CAP, 390pF
CAP, 4.3pF
CAP, 390pF
CAP, 390pF
CAP, 0.1uF
CAP, 3.9pF
CAP, 6.8pF
CAP, 13pF
CAP, 390pF
CAP, 390pF
CAP, 390pF
CAPP, 33uF
CAP, .01uF
CAP, 100pF
CAP, .01uF
CAP, .01uF
CAP, .018uF
CAPP, 10uF
CAP, .01uF
CAP, 1200pF
CAP, 1200pF
CAP, 1200pF
CAP, .018uF
CAPP, 10uF
CAP, .01uF
CAP, 150pF
CAP, .01uF
CAP, .01uF
CAPP, 10uF
CAP, .022uF
November 24, 2003
11-56
Circuit
Ref
C401
C402
C403
C404
C405
C406
C407
C408
C409
C410
C411
C412
C413
C414
C415
C416
C417
C418
C419
C420
C421
C422
C430
C431
C432
C433
C440
C441
C442
C443
C444
C445
C446
C447
C451
C452
C453
C454
C455
C456
C457
C458
C459
C460
C461
C462
C463
C464
C465
C466
C467
UHF 465-495 MHz PCB 8486634Z02 Schematic Diagrams, Overlays, and Parts Lists
Motorola
Part No.
2113743M24
2113743L17
2113743N50
2113743L17
2113743N50
2113743N50
2113743L17
2113743L17
2113743L17
2311049A57
2113743M24
2113743L17
2113743M24
2113743M24
2113743L17
2113743L17
2113743L17
2113743M24
2113743L17
2113743L41
2113743L41
2113743L41
2113743M24
2113743L17
2113743M24
2113743L17
2113743L41
2113743L41
2113743L41
2113743L41
2113743L41
2113743L41
2113743L41
2113743M24
2113743M24
2113743E20
2311049A56
2113743E20
2113743L48
2113743E20
2113743E20
2113743E20
2113743E20
2113743E20
2113743L17
2113743E20
2113743E20
2113743E20
2113743L17
Not_Placed
2113743L19
November 24, 2003
Description
CAP, 0.1uF
CAP, 1000pF
CAP, 150pF
CAP, 1000pF
CAP, 150pF
CAP, 150pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAPP, 10uF
CAP, 0.1uF
CAP, 1000pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 0.1uF
CAP, 1000pF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, 0.1uF
CAP, 1000pF
CAP, 0.1uF
CAP, 1000pF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, .01uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAPP, 4.7uF
CAP, 0.1uF
CAP, .022uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 1000pF
CAP, 0.1uF
CAP, 0.1uF
CAP, 0.1uF
CAP, 1000pF
CAP, 470pF
CAP, 1200pF
Circuit
Ref
C470
C471
C472
C473
C474
C475
C476
C477
C478
C479
C480
C481
C482
C483
C484
C488
C489
C490
C492
C493
C494
C495
C496
C497
C498
C499
C500
C501
C503
C504
C505
C506
C507
C511
C512
C513
C514
C518
C519
C521
C522
C523
C524
C525
CR1
CR41
CR51
D51
D52
D120
D121
Motorola
Part No.
2113743E20
2113743F18
2113743E20
2113743N54
2113743N54
2113743L48
2113743L48
2113743M24
2113743N54
2113743N54
2113743E20
Not_Placed
Not_Placed
2113743E20
Not_Placed
2113743L09
2113743L09
2113743L09
2113928J08
2113743L17
2113743F18
2113743F16
2113743F16
2113743E20
2113743F16
2113743N48
2113743L17
2113743F16
2113743L17
2113743L17
2113743L17
2113743L17
2113743L17
2113740F59
2113743N22
2113740F59
2113743N31
2113743E20
2113743F16
2109445U13
2113743N01
2186463Z03
2186463Z03
2113743L07
4813825A19
4802246J04
4813825A19
4802245J97
4802245J97
4880973Z02
4880973Z02
Description
CAP, 0.1uF
CAP, 2.2uF
CAP, 0.1uF
CAP, 150pF
CAP, 150pF
CAP, .022uF
CAP, .022uF
CAP, 0.1uF
CAP, 150pF
CAP, 150pF
CAP, 0.1uF
CAP, .01uF
CAP, .01uF
CAP, 0.1uF
CAP, .033uF
CAP, 470pF
CAP, 470pF
CAP, 470pF
CAP, 10uF
CAP, 1000pF
CAP, 2.2uF
CAP, 1uF
CAP, 1uF
CAP, 0.1uF
CAP, 1uF
CAP, 82pF
CAP, 1000pF
CAP, 1uF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 1000pF
CAP, 220pF
CAP, 6.8pF
CAP, 220pF
CAP, 16pF
CAP, 0.1uF
CAP, 1uF
CAP, 2.7pF
CAP, 0.5pF
CAP, 0.5pF
CAP, 0.5pF
CAP, 390pF
MMBD352
HSMS2829
MMBD352
DAN235ETL
DAN235ETL
MA4PH261
MA4PH261
Circuit
Ref
D201
D220
D221
D251
D261
D262
D301
D414
D424
D440
D470
D471
D491
E451
E452
E453
E500
F301
FL51
FL52
FL53
FL54
J140
J301
J460
J470
J471
J491
L1
L2
L3
L21
L31
L32
L33
L34
L40
L41
L51
L52
L53
L54
L55
L81
L100
L101
L102
L103
L110
L120
L121
Motorola
Part No.
4862824C03
4802233J09
4802233J09
4862824C01
4862824C01
4862824C01
4813833A19
4805129M41
4809924D18
4805729G49
4809924D18
4809924D18
Not_Placed
2480640Z01
2480640Z01
2480640Z01
2480640Z01
6580542Z01
9180022M11
9180468V04
9180469V05
9180469V03
0986428Z01
0986565Z01
Not_Placed
0985818A01
0980683Z03
2809926G01
2409348J15
2409348J15
2409348J15
2413926N18
2409348J15
2409348J15
2409348J15
2409348J15
2413926K16
2413926K16
2413926N26
2462587V44
2113743N52
2413923A25
2413926N16
2413923A19
2413926K27
2413926K27
2409377M25
2409377M24
2413926K27
2413926K27
2462587V24
Description
1SV232
IMN10
IMN10
1SV229
1SV229
1SV229
MBRM120ET3
MMBD501
RB520S-30
BRPY1204W
RB520S-30
RB520S-30
MMBD501
BK1005HM471
BK1005HM471
BK1005HM471
BK1005HM471
FUSE
MXF45
FLTR
CFWC455E
CFWC455G
CONN_J
CONN_J
CONN_J
CONN_J
CONN_J
CONN_P
IDCTR, 9.85nH
IDCTR, 9.85nH
IDCTR, 9.85nH
IDCTR, 33nH
IDCTR, 9.85nH
IDCTR, 9.85nH
IDCTR, 9.85nH
IDCTR, 9.85nH
IDCTR, 27nH
IDCTR, 27nH
IDCTR, 150nH
IDCTR, 680nH
CAP, 120pF
IDCTR, 1.2uH
IDCTR, 22nH
IDCTR, 1uH
IDCTR, 220nH
IDCTR, 220nH
IDCTR, 7.5nH
IDCTR, 5.1nH
IDCTR, 220nH
IDCTR, 220nH
IDCTR, 15nH
Circuit
Ref
L130
L131
L132
L140
L141
L211
L251
L252
L254
L255
L262
L264
L265
L270
L271
L272
L276
L281
L282
L283
L291
L292
L471
M140
Q21
Q22
Q51
Q70
Q100
Q150
Q170
Q171
Q280
Q311
Q312
Q313
Q402
Q403
Q410
Q440
Q470
Q471
Q472
Q481
Q482
Q490
Q493
Q494
Q520
R20
R21
Motorola
Part No.
2460591C36
2460591C40
2460591C40
2460591L14
2479990M01
2413926K30
2413926N28
2413926N17
2484562T11
2413926N28
2413926N17
2484562T13
2413926N28
2413926N28
Not_Placed
2413926N28
2413926N17
2413926N15
2413926N15
Not_Placed
2413926N10
2413926N14
2413926K30
0286427Z01
4802247J01
4805723X02
4802197J95
4880214G02
4885593U03
4880214G02
4809939C34
4880048M01
4802245J95
4809579E18
4809579E18
4802245J54
4880048M01
4813824A17
4802245J54
5180159R01
4805723X02
4802245J54
4805723X02
Not_Placed
Not_Placed
4802245J54
4809579E18
4802245J54
5180159R01
0662057M92
0662057M49
Description
IDCTR, 20.45nH
IDCTR, 17.02nH
IDCTR, 17.02nH
IDCTR, 15.92nH
IDCTR, 30.54nH
IDCTR, 390nH
IDCTR, 220nH
IDCTR, 27nH
IDCTR, 12.5nH
IDCTR, 220nH
IDCTR, 27nH
IDCTR, 8nH
IDCTR, 220nH
IDCTR, 220nH
IDCTR, 220nH
IDCTR, 220nH
IDCTR, 27nH
IDCTR, 18nH
IDCTR, 18nH
IDCTR, 22nH
IDCTR, 6.8nH
IDCTR, 15nH
IDCTR, 390nH
ANTENNA_NUT
BFS505
UMT1
PBR941
MMBT3904
BFG540W
MMBT3904
EMB10
DTC144EKA
BFS540
TP0101T
TP0101T
UMG5
DTC144EKA
MMBT3906
UMG5
IMX1
UMT1
UMG5
UMT1
MMBT3906
MMBT3904
UMG5
TP0101T
UMG5
IMX1
RES, 5.6K
RES, 91
HKLN4216A
UHF 465-495 MHz PCB 8486634Z02 Schematic Diagrams, Overlays, and Parts Lists
Circuit
Ref
R22
R23
R24
R25
R40
R51
R52
R53
R54
R55
R57
R60
R61
R62
R63
R64
R65
R66
R67
R72
R73
R74
R75
R76
R77
R78
R80
R81
R82
R90
R91
R100
R101
R102
R103
R104
R105
R106
R107
R110
R111
R120
R121
R150
R151
R152
R153
R154
R155
R156
R157
Motorola
Part No.
0662057M92
0662057N09
0662057M76
0662057M92
0662057M74
0662057M43
0662057N01
0662057N11
0662057M91
0662057M62
0662057M90
0662057M83
0662057N23
0662057M86
0662057N13
0662057N06
0662057N13
0662057N06
0662057N06
0662057M64
0662057M80
0662057M76
0662057N01
0662057V04
0662057U99
0662057M70
0662057M91
0662057M74
Not_Placed
0662057M43
0662057M79
0662057M72
0662057M20
0662057M72
0662057M85
0662057A07
0662057M84
0662057M90
Not_Placed
0662057M70
0662057M81
0662057C55
0662057C55
0680539Z01
0662057A15
0662057V27
0662057V27
0662057V27
0662057V27
0662057M62
0662057M82
HKLN4216A
Description
RES, 5.6K
RES, 27K
RES, 1.2K
RES, 5.6K
RES, 1K
RES, 51
RES, 12K
RES, 33K
RES, 5.1K
RES, 330
RES, 4.7K
RES, 2.4K
RES, 100K
RES, 3.3K
RES, 39K
RES, 20K
RES, 39K
RES, 20K
RES, 20K
RES, 390
RES, 1.8K
RES, 1.2K
RES, 12K
RES, 12K
RES, 8.2K
RES, 680
RES, 5.1K
RES, 1K
RES, 0
RES, 51
RES, 1.6K
RES, 820
RES, 5.6
RES, 820
RES, 3K
RES, 18
RES, 2.7K
RES, 4.7K
RES, 300
RES, 680
RES, 2K
RES, 150
RES, 150
RES, 0.1
RES, 39
RES, 100K
RES, 100K
RES, 100K
RES, 100K
RES, 330
RES, 2.2K
Circuit
Ref
R158
R162
R202
R205
R206
R212
R220
R221
R223
R227
R230
R243
R244
R245
R246
R247
R253
R254
R255
R261
R262
R263
R264
R271
R272
R273
R274
R275
R276
R277
R280
R281
R282
R283
R284
R285
R310
R311
R312
R313
R320
R321
R322
R400
R410
R411
R412
R413
R414
R415
R416
Motorola
Part No.
0662057M78
0662057M98
0662057N27
0662057M50
Not_Placed
0662057C01
0662057M34
0662057M34
0662057M50
0662057N13
0662057N06
0662057M72
0662057M43
0662057M78
0662057N23
0662057N05
0662057M42
0662057M50
0662057U91
0662057N07
0662057M95
0662057M38
0662057M50
0662057M91
0662057M93
0662057M62
0662057M38
0662057M50
Not_Placed
0662057B47
0662057M90
0662057M96
0662057M73
0662057M53
Not_Placed
0662057M01
0662057N23
0662057N23
0662057N06
0662057M98
0662057V43
0662057V35
0662057N23
Not_Placed
0662057M98
0662057M72
0662057N23
0662057N23
0662057N11
0662057N11
0662057N06
11-57
Description
RES, 1.5K
RES, 10K
RES, 150K
RES, 100
RES, 100
RES, 0
RES, 22
RES, 22
RES, 100
RES, 39K
RES, 20K
RES, 820
RES, 51
RES, 1.5K
RES, 100K
RES, 18K
RES, 47
RES, 100
RES, 3.9K
RES, 22K
RES, 7.5K
RES, 33
RES, 100
RES, 5.1K
RES, 6.2K
RES, 330
RES, 33
RES, 100
RES, 1K
RES, 0
RES, 4.7K
RES, 8.2K
RES, 910
RES, 130
RES, 560
RES, 0
RES, 100K
RES, 100K
RES, 20K
RES, 10K
RES, 330K
RES, 200K
RES, 100K
RES, 100K
RES, 10K
RES, 820
RES, 100K
RES, 100K
RES, 33K
RES, 33K
RES, 20K
Circuit
Ref
R417
R418
R419
R420
R421
R422
R423
R424
R425
R430
R431
R432
R433
R434
R440
R441
R442
R443
R445
R446
R451
R460
R462
R463
R464
R469
R470
R471
R472
R473
R474
R475
R476
R477
R478
R479
R480
R481
R482
R483
R484
R485
R486
R487
R488
R489
R490
R491
R492
R493
R494
Motorola
Part No.
0662057M98
0662057N23
0662057M90
0662057V35
0662057V27
0662057N23
0662057N23
0662057V35
0662057V27
0662057N23
Not_Placed
0662057M01
0662057N23
Not_Placed
0662057M90
0662057M90
0662057A33
0662057A27
0662057M90
0662057M98
0662057N15
0662057N08
0662057N08
0662057N08
0662057N10
0662057M26
0662057M82
0662057M82
0662057M70
0662057M70
0662057A37
0662057N29
0662057N23
0662057M82
0662057M82
0662057N23
0662057B47
Not_Placed
Not_Placed
Not_Placed
Not_Placed
Not_Placed
Not_Placed
0662057M01
0662057N35
Not_Placed
Not_Placed
0662057M01
0662057N08
0662057N35
0662057V43
Description
RES, 10K
RES, 100K
RES, 4.7K
RES, 200K
RES, 100K
RES, 100K
RES, 100K
RES, 200K
RES, 100K
RES, 100K
RES, 100K
RES, 0
RES, 100K
RES, 100K
RES, 4.7K
RES, 4.7K
RES, 220
RES, 120
RES, 4.7K
RES, 10K
RES, 47K
RES, 24K
RES, 24K
RES, 24K
RES, 30K
RES, 10
RES, 2.2K
RES, 2.2K
RES, 680
RES, 680
RES, 330
RES, 180K
RES, 100K
RES, 2.2K
RES, 2.2K
RES, 100K
RES, 0
RES, 100K
RES, 330K
RES, 150K
RES, 2.2K
RES, 100K
RES, 100K
RES, 0
RES, 330K
RES, 91K
RES, 2.2K
RES, 0
RES, 24K
RES, 330K
RES, 330K
Circuit
Ref
R495
R496
R497
R498
R499
R501
R502
R503
R504
R505
R506
R507
R508
R509
R510
R511
R512
R513
R514
R515
R516
R517
R518
R519
R520
R521
R522
R523
S440
S441
S442
S443
S444
SH1
SH40
SH50
SH52
SH100
SH200
SH201
SH250
SH251
SH253
SH400
SH401
T41
T42
U51
U52
U110
U150
Motorola
Part No.
0662057M92
Not_Placed
Not_Placed
Not_Placed
Not_Placed
0662057M50
0662057M50
0662057M50
0662057M50
0662057M50
0662057M50
0662057M50
0662057N23
0662057N23
0662057N35
0662057N23
0662057N27
0662057N23
0662057N23
0662057M01
Not_Placed
Not_Placed
0662057N31
0662057N23
0662057N23
Not_Placed
0662057N23
0662057M98
4080710Z06
4070354A01
4070354A01
4070354A01
1880619Z02
2686421Z01
2686419Z01
2686423Z01
2686424Z01
2686418Z01
2686424Z01
2686423Z01
2686425Z01
2686425Z01
2686422Z01
2686420Z01
2686420Z01
2580541Z02
2580541Z02
5186144B01
5109522E10
0186438Z02
5113818A01
Description
RES, 5.6K
RES, 10K
RES, 1MEG
RES, 47K
RES, 270K
RES, 100
RES, 100
RES, 100
RES, 100
RES, 100
RES, 100
RES, 100
RES, 100K
RES, 100K
RES, 330K
RES, 100K
RES, 150K
RES, 100K
RES, 100K
RES, 0
RES, 0
RES, 0
RES, 220K
RES, 100K
RES, 100K
RES, 100K
RES, 100K
RES, 10K
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
SHIELD
XFMR
XFMR
SA616
TC7W04F
RA07M4452M_UHF
LM2904
November 24, 2003
11-58
UHF 465-495 MHz PCB 8486634Z02 Schematic Diagrams, Overlays, and Parts Lists
Circuit
Ref
U151
U201
U251
U310
U320
U330
U401
U402*
U403
U404*
U451
U480
U490
U510
U511
VR110
VR301
VR302
VR471
VR472
VR473
VR474
VR475
Y51
Y70
Y201*
Y202
Motorola
Part No.
Description
2484657R01 57R01
5185963A27 63A27
5105750U54 50U54
5102478J01
TK71750S
5185963A55 LP2986
5102479J01
TK71730S
5102226J56
MC68HC11FL0
5102463J64
X25128-2.7
Not_Placed
SRM2B256
5102480J01
AT49LV001N_70VI
5185130C53 30C53
Not_Placed
LM2904
5108858K99 TDA8541
5113818A01 LM2904
4802245J54
UMG5
4813830A86 MM3Z3V9T1
4813830A33 MMBZ5250B
4813830A33 MMBZ5250B
4813830A18 MMBZ5235B
4813830A09 MMBZ5226B
4813830A33 MMBZ5250B
4813830A33 MMBZ5250B
4880140L20
MMBZ5245B
4802245J84
TSS2_44_395MHZ
9186145B02 45B02
4880114R06 14R06
Not_Placed
45J68
* Motorola Depot Servicing only
Circuit
Ref
D10
D11
J1
J2
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
Motorola
Part No.
4809496B11
4809496B11
0986632Z01
0909059E18
0662057A97
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
0662057A97
0662057A76
0662057A81
NOTPLACED
NOTPLACED
0662057A41
0662057A41
NOTPLACED
NOTPLACED
NOTPLACED
Description
QSMG-H799
QSMG-H799
CONN_J
CONN_J
RES, 100K
RES, 13K
RES, 22K
RES, 43K
RES, 130K
RES, 100K
RES, 13K
RES, 22K
RES, 43K
RES, 130K
RES, 470
RES, 470
RES, 330
RES, 330
RES, 330
UHF (465-495 MHz) Keypad Board Parts List
Circuit
Ref
C1
C2
C3
C4
C5
C6
C7
C8
D1
D2
D3
D4
D5
D6
D7
D8
D9
Motorola
Part No.
NOTPLACED
2113740F55
NOTPLACED
2113743E20
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
4809496B11
4809496B11
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
NOTPLACED
4809496B11
November 24, 2003
Description
CAP, 150pF
CAP, 150pF
CAP, 150pF
CAP, 0.1uF
CAP, 150pF
CAP, 150pF
CAP, 150pF
CAP, 150pF
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
QSMG-H799
HKLN4216A
INDEX
A
Antenna Matching Network, UHF 403-440 MHz Theory Of Operation ...............................7-4
Antenna Matching Network, UHF 438-470 MHz Theory Of Operation ...............................8-4
Antenna Matching Network, UHF 465-495 MHz Theory Of Operation ...............................9-4
Antenna Matching Network, VHF 146-174 MHz Theory Of Operation................................4-4
Antenna Switch, UHF 403-440 MHz Theory Of Operation..................................................7-3
Antenna Switch, UHF 438-470 MHz Theory Of Operation..................................................8-3
Antenna Switch, UHF 465-495 MHz Theory Of Operation..................................................9-3
Antenna Switch, VHF 146-174 MHz Theory Of Operation..................................................4-3
Audio Circuitry Theory of Operation ....................................................................................3-4
Audio Power Amplifier Theory of Operation ........................................................................3-5
B
Battery Gauge Controller Theory of Operation....................................................................3-4
Boot Mode Control Controller Theory of Operation.............................................................3-4
C
Computer Software Copyrights .............................................................................................. ii
Control and Indicator Interface Controller Theory of Operation ..........................................3-2
Controller Theory of Operation............................................................................................3-1
Controller.......................................................................................................................3-1
Microprocessor Circuitry..........................................................................................3-1
Memory Usage ..................................................................................................3-2
Control and Indicator Interface ..........................................................................3-2
Serial Bus Control of Circuit Blocks ..................................................................3-2
Interface to RSS Programming .........................................................................3-3
Storage of Customer-Specific Information.........................................................3-3
Sensing of Externally-Connected Accessories..................................................3-3
Microprocessor Power-Up, Power-Down and Reset Routine............................3-3
Boot Mode Control.............................................................................................3-4
Microprocessor 7.3975 MHz Clock....................................................................3-4
Battery Gauge ...................................................................................................3-4
Audio Circuitry ...............................................................................................................3-4
Transmit and Receive Low-Level Audio Circuitry ..............................................3-4
Audio Power Amplifier .......................................................................................3-5
Internal Microphone Audio Voice Path ..............................................................3-5
PTT Circuits .......................................................................................................3-6
VOX Operation ..................................................................................................3-6
Programming and Flashing Through Microphone Jack .....................................3-6
D
DC Power Distribution Theory of Operation ........................................................................2-1
DC Regulation and Distribution Theory of Operation ..........................................................2-1
Disclaimer............................................................................................................................... ii
Document Copyrights............................................................................................................. ii
2
INDEX
E
F
Foreword ................................................................................................................................ ii
Fractional-N Synthesizer, UHF 403-440 MHz Theory Of Operation ...................................7-5
Fractional-N Synthesizer, UHF 438-470 MHz Theory Of Operation ...................................8-5
Fractional-N Synthesizer, UHF 465-495 MHz Theory Of Operation ...................................9-5
Fractional-N Synthesizer, VHF 146-174 MHz Theory Of Operation ...................................4-5
Frequency Generation Circuitry, UHF 403-440 MHz Theory Of Operation.........................7-4
Frequency Generation Circuitry, UHF 438-470 MHz Theory Of Operation.........................8-4
Frequency Generation Circuitry, UHF 465-495 MHz Theory Of Operation.........................9-4
Frequency Generation Circuitry, VHF 146-174 MHz Theory Of Operation.........................4-4
G
H
Harmonic Filter, UHF 403-440 MHz Theory Of Operation ..................................................7-3
Harmonic Filter, UHF 438-470 MHz Theory Of Operation ..................................................8-3
Harmonic Filter, UHF 465-495 MHz Theory Of Operation ..................................................9-3
Harmonic Filter, VHF 146-174 MHz Theory Of Operation ..................................................4-3
I
Interface to RSS Programming Controller Theory of Operation..........................................3-3
Internal Microphone Audio Voice Path Theory of Operation ...............................................3-5
Introduction, UHF 403-440 MHz Theory Of Operation........................................................7-1
Introduction, UHF 438-470 MHz Theory Of Operation........................................................8-1
Introduction, UHF 465-495 MHz Theory Of Operation........................................................9-1
Introduction, UHF Schematic Diagrams, Overlays, and Parts Lists .................................. 11-1
Introduction, VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists .............6-1
Introduction, VHF 146-174 MHz Theory Of Operation........................................................4-1
J
K
Keypad, UHF 403-440 MHz Theory Of Operation ..............................................................7-7
Keypad, UHF 438-470 MHz Theory Of Operation ..............................................................8-7
Keypad, UHF 465-495 MHz Theory Of Operation ..............................................................9-7
Keypad, VHF 146-174 MHz Theory Of Operation ..............................................................4-7
L
List of Figures.......................................................................................................................viii
List of Tables ......................................................................................................................... ix
M
Memory Usage Controller Theory of Operation ..................................................................3-2
Microprocessor 7.3975 MHz Clock Controller Theory of Operation....................................3-4
Microprocessor Circuitry Controller Theory of Operation....................................................3-1
Microprocessor Power-Up, Power-Down and Reset Routine Controller Theory of Operation3-3
November 24, 2003
HKLN4216A
INDEX
3
N
Notes For All Schematics and Circuit Boards, UHF .......................................................... 11-1
Notes For All Schematics and Circuit Boards, VHF 146-174 MHz......................................6-1
O
P
Power Control, UHF 438-470 MHz Theory Of Operation l ..................................................8-4
Power Control, UHF 403-440 MHz Theory Of Operation....................................................7-4
Power Control, UHF 465-495 MHz Theory Of Operation....................................................9-4
Power Control, VHF 146-174 MHz Theory Of Operation ....................................................4-4
Product Safety and RE Exposure Compliance....................................................................... ii
Programming and Flashing Through Microphone Jack Controller Theory of Operation .....3-6
PTT Circuits Controller Theory of Operation .......................................................................3-6
Q
R
Receiver Back End, UHF 403-440 MHz Theory Of Operation ............................................7-2
Receiver Back End, UHF 438-470 MHz Theory Of Operation ............................................8-2
Receiver Back End, UHF 465-495 MHz Theory Of Operation ............................................9-2
Receiver Back-End, VHF 146-174 MHz Theory Of Operation ............................................4-2
Receiver Front End, UHF 403-440 MHz Theory Of Operation............................................7-1
Receiver Front End, UHF 438-470 MHz Theory Of Operation............................................8-1
Receiver Front End, UHF 465-495 MHz Theory Of Operation............................................9-1
Receiver Front-End, VHF 146-174 MHz Theory Of Operation............................................4-1
Receiver UHF 438-470 MHz Theory Of Operation .............................................................8-1
Receiver, UHF 403-440 MHz Theory Of Operation.............................................................7-1
Receiver, UHF 465-495 MHz Theory Of Operation.............................................................9-1
Related Publications............................................................................................................... x
S
Sensing of Externally-Connected Accessories Controller Theory of Operation ..................3-3
Serial Bus Control of Circuit Controller Blocks Theory of Operation ...................................3-2
Service Aids ........................................................................................................................1-2
Six Layer Circuit Board, UHF .............................................................................................. 11Six Layer Circuit Board, VHF ..............................................................................................6-3
Speaker and Microphone Parts List, UHF......................................................................... 11-3
Speaker and Microphone Parts List, VHF 146-174 MHz ....................................................6-3
Speaker and Microphone Schematic, UHF ....................................................................... 11-3
Speaker and Microphone Schematic, VHF 146-174 MHz...................................................6-3
Storage of Customer-Specific Information Controller Theory of Operation .........................3-3
T
Test Equipment, Service Aids, and Service Tools ...............................................................1-1
Test Equipment....................................................................................................................1-1
Service Aids ..................................................................................................................1-2
Transmit and Receive Low-Level Audio Circuitry Theory of Operation...............................3-4
Transmit Power Amplifier, VHF 146-174 MHz Theory Of Operation ...................................4-3
HKLN4216A
November 24, 2003
4
INDEX
Transmitter Power Amplifier, UHF 403-440 MHz Theory Of Operation ..............................7-3
Transmitter Power Amplifier, UHF 438-470 MHz Theory Of Operation ..............................8-3
Transmitter Power Amplifier, UHF 465-495 MHz Theory Of Operation ..............................9-3
Transmitter, UHF 403-440 MHz Theory Of Operation ........................................................7-3
Transmitter, UHF 438-470 MHz Theory Of Operation ........................................................8-3
Transmitter, UHF 465-495 MHz Theory Of Operation ........................................................9-3
Troubleshooting Tables, UHF............................................................................................10-1
Troubleshooting Table for Board and IC Signals, UHF .....................................................10-6
Troubleshooting Table for Board and IC Signals, VHF 146-174 MHz .................................5-6
Troubleshooting Table for Receiver, UHF .........................................................................10-1
Troubleshooting Table for Receiver, VHF 146-174 MHz .....................................................5-1
Troubleshooting Table for Synthesize, UHF......................................................................10-3
Troubleshooting Table for Synthesize, VHF 146-174 MHz .................................................5-3
Troubleshooting Table for Transmitter, UHF .....................................................................10-4
Troubleshooting Table for Transmitter, VHF 146-174 MHz .................................................5-4
U
UHF 403-440 MHz Theory Of Operation ............................................................................7-1
UHF 438-470 MHz Theory Of Operation ............................................................................8-1
UHF 465-495 MHz Theory Of Operation ............................................................................9-1
UHF 403-440 MHz Theory Of Operation ............................................................................7-1
Introduction ...................................................................................................................7-1
UHF Receiver................................................................................................................7-1
Receiver Front End ...........................................................................................7-1
Receiver Back End............................................................................................7-2
UHF Transmitter............................................................................................................7-3
Transmitter Power Amplifier ..............................................................................7-3
Antenna Switch .................................................................................................7-3
Harmonic Filter ..................................................................................................7-3
Antenna Matching Network .....................................................................................7-4
Power Control..........................................................................................................7-4
UHF Frequency Generation Circuitry............................................................................7-4
Fractional-N Synthesizer .........................................................................................7-5
Voltage Controlled Oscillator (VCO)........................................................................7-6
Keypad ..........................................................................................................................7-7
UHF 438-470 MHz Theory Of Operation ............................................................................8-1
Introduction ...................................................................................................................8-1
UHF Receiver................................................................................................................8-1
Receiver Front End .................................................................................................8-1
Receiver Back End..................................................................................................8-2
UHF Transmitter............................................................................................................8-3
Transmitter Power Amplifier ....................................................................................8-3
Antenna Switch .......................................................................................................8-3
Harmonic Filter ........................................................................................................8-3
Antenna Matching Network .....................................................................................8-4
Power Control..........................................................................................................8-4
UHF Frequency Generation Circuitry............................................................................8-4
Fractional-N Synthesizer .........................................................................................8-5
Voltage Controlled Oscillator (VCO)........................................................................8-6
Keypad ..........................................................................................................................8-7
November 24, 2003
HKLN4216A
INDEX
5
UHF 465-495 MHz Theory Of Operation.............................................................................9-1
Introduction....................................................................................................................9-1
UHF Receiver................................................................................................................9-1
Receiver Front End..................................................................................................9-1
Receiver Back End ..................................................................................................9-2
UHF Transmitter ............................................................................................................9-3
Transmitter Power Amplifier ....................................................................................9-3
Antenna Switch........................................................................................................9-3
Harmonic Filter ........................................................................................................9-3
Antenna Matching Network .....................................................................................9-4
Power Control..........................................................................................................9-4
UHF Frequency Generation Circuitry ............................................................................9-4
Fractional-N Synthesizer .........................................................................................9-5
Voltage Controlled Oscillator (VCO) ........................................................................9-6
Keypad ..........................................................................................................................9-7
UHF Schematic Diagrams, Overlays, and Parts Lists ...................................................... 11-1
Introduction.................................................................................................................. 11-1
Notes For All Schematics and Circuit Boards........................................................ 11-1
Six Layer Circuit Board.......................................................................................... 11-3
Speaker and Microphone Schematic .......................................................................... 11-3
Speaker and Microphone Parts List ...................................................................... 11-3
UHF Troubleshooting Tables.............................................................................................10-1
Troubleshooting Table for Receiver.............................................................................10-1
Troubleshooting Table for Synthesizer ........................................................................10-3
Troubleshooting Table for Transmitter .........................................................................10-4
Troubleshooting Table for Board and IC Signals .........................................................10-6
V
VHF 146-174 MHz Keypad Board Parts List.....................................................................6-22
VHF 146-174 MHz Radio Parts List ..................................................................................6-19
VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists ..................................6-1
VHF 146-174 MHz Theory Of Operation.............................................................................4-1
VHF 146-174 MHz Troubleshooting Tables ........................................................................5-1
VHF Receiver, VHF 146-174 MHz Theory Of Operation.....................................................4-1
VHF Transmitter, VHF 146-174 MHz Theory Of Operation.................................................4-3
VHF 146-1 74 MHz Keypad Board Parts List....................................................................6-22
VHF 146-1 74 MHz Radio Parts List .................................................................................6-19
VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists ..................................6-1
Introduction....................................................................................................................6-1
Notes For All Schematics and Circuit Boards..........................................................6-1
Six Layer Circuit Board............................................................................................6-3
Speaker and Microphone Schematic ............................................................................6-3
Speaker and Microphone Parts List ........................................................................6-3
VHF 146-174 MHz Theory Of Operation.............................................................................4-1
Introduction....................................................................................................................4-1
VHF Receiver ................................................................................................................4-1
Receiver Front-End .................................................................................................4-1
Receiver Back-End..................................................................................................4-2
HKLN4216A
November 24, 2003
6
INDEX
VHF Transmitter ............................................................................................................4-3
Transmit Power Amplifier ........................................................................................4-3
Antenna Switch .......................................................................................................4-3
Harmonic Filter ........................................................................................................4-3
Antenna Matching Network .....................................................................................4-4
Power Control..........................................................................................................4-4
VHF Frequency Generation Circuitry ............................................................................4-4
Fractional-N Synthesizer .........................................................................................4-5
Voltage Controlled Oscillator (VCO)........................................................................4-6
Keypad ..........................................................................................................................4-7
VHF 146-174 MHz Troubleshooting Tables ........................................................................5-1
Troubleshooting Table for Receiver...............................................................................5-1
Troubleshooting Table for Synthesizer ..........................................................................5-3
Troubleshooting Table for Transmitter...........................................................................5-4
Troubleshooting Table for Board and IC Signals...........................................................5-6
Voltage Controlled Oscillator (VCO), UHF 465-495 MHz Theory Of Operation..................9-6
Voltage Controlled Oscillator (VCO), VHF 146-174 MHz Theory Of Operation ..................4-6
Voltage Controlled Oscillator (VCO), UHF 403-440 MHz Theory Of Operation..................7-6
Voltage Controlled Oscillator (VCO), UHF 438-470 MHz Theory Of Operation..................8-6
VOX Operation Controller Theory of Operation ..................................................................3-6
W
X
Y
Z
November 24, 2003
HKLN4216A