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EXHIBIT A BASE STATION RADIO EQUIPMENT SPECIFICATIONS/REQUIREMENTS RFB/EVENT #R2901-2000004167 (REBID) 1. Overview A Daniels 60-110W W VHF P25 Base Station is being specified as listed on the Price Schedule, Exhibit B, but responders can submit responses with substitute equipment that meet the specification/requirement criteria detailed in Exhibit A, below and are deemed approved equal by the State as detailed in the Special Terms and Conditions, Item No. 7. The radio system shall consist of modular transmitters and receivers that employ an efficient low power consumption design. The system shall be capable of continuous 100% duty cycle over a wide temperature range. Interconnection between transmitter and receiver modules, as well as control and monitor modules, will be through a main motherboard using printed circuit board techniques, with no discreet wiring for all analog signaling. Digital interconnection will be accomplished via a front panel data bus to allow for ease of upgrade and configuration changes. These modules must be interchangeable with various standard motherboards that are capable of operation as standalone base stations, redundant stations, repeater stations, receiver only stations, transmitter only stations. This requirement will reduce the need for spare modules. 2. Modularity The radio system shall comprise of a number of labeled plug-in modules so that interchanging for test and repair is facilitated. The system shall be marked to show the location of all included modules. Modules shall incorporate a device which secures them in position. Any unused module positions shall be equipped with covers. Transmitter and receiver modules must be hot-swappable and capable of individual field replacement. Transmitters will incorporate internal separate removable RF amplifier assemblies and plug in synthesizer assemblies. Receivers will incorporate internal separate removable RF pre-amplifier assemblies and plug in synthesizer assemblies. 3. Controls The following controls / adjustments shall be accessible from the front of the unit. Access to controls or adjustments from the rear of the unit is not permitted. Squelch disable Transmitter disable Transmitter type indicator (Analog/Digital) Microphone mode selection (Analog/Digital) Programming USB port Local test controls are to provide for local operation of the transmitter and receiver for test purposes. Local test controls shall be provided on all equipment where local operation controls are not provided. Provision for local test controls shall not preclude or degrade operation of the equipment by any primary controls otherwise provided. 4. Speaker The base station shall have a rack mounted local speaker that can select the audio from any of the receivers that have audio on the control lines. A speaker and speaker volume control shall be provided. Audio output for local test shall not be less than 0.5 Watts. 5. Programming Radio system must be field programmable. Channel selection shall be in 2.5 / 5.0 / 6.25 kHz increments for VHF and 6.25 / 12.5 kHz increments for UHF. Channels must be programmed through software changes. General operation of system will be selected through internal jumpers and control programming software. All supplied radio systems must include the required programming interface hardware. Programming software must have a built in update checker to allow user to check for new upgrade availability on the internet (internet access required for this feature). Additional features that must be programmed via the programming software include: Analog Wideband or Narrowband operation on a per-channel basis CTCSS or DCS tone on a per-channel basis Hang Timer and Timeout Timer selections Reverse Burst selection (including phase selection, 180 º or 120 º) Adjustment of power and audio levels Selection of status tone operation for receiver voting NAC and TGID settings for P25 operation 6. Upgrade Capabilities Radio system must be capable of receiving firmware upgrades in the field via the USB port on the front of each radio module. Firmware updates must be available from the vendor’s website for download and deployment. The radio system must be capable of being upgraded in the field from analog operation to full P25 digital operation via a purchased firmware upgrade. P25 upgrade must require no additional hardware to be added to the Transmitter or Receiver modules (not including encryption). 7. Continuous Duty over Temperature Radio system must be capable of continuous duty (100%) over the entire temperature range of -30º to 60º Celsius. No reduction in duty cycle is acceptable. 8. Interoperability Radio equipment must be compatible with current P25 standards to allow users from different agencies or areas to communicate directly with each other. This will allow agencies on the federal, state or local level (or any other agency) to communicate more effectively with each other when required. Analog, Digital or Mixed mode shall capable on a channel by channel basis. 9. Modulation In compliance with the P25 standard, radio equipment must not only provide a 12.5 kHz C4FM digital channel, but must also be backwards compatible with existing analog 12.5 kHz channels and equipment. 10. Encryption The P25 standard includes a requirement for protecting digital communications (voice and data) with encryption capability. The encryption used in P25 is optional, allowing the user to select either clear (unencrypted) or secure (encrypted) digital communication methods. All Transmitter and Receiver modules must have the capability to add encryption modules for secure communications when used in a base station configuration. Encryption modules must be capable of AES or DES-OFB encryption methods. Encryption modules must be field installable. 11. Over the Air Rekeying (OTAR) The repeater must be capable of passing P25 OTAR signals without distortion. pg. 2 12. Documentation Radio system must include documentation that defines the configuration of the system as shipped. Generic product information is not acceptable. Configuration documentation must include: functional block diagram of system operation when applicable Jumper lists for controlling control hardware Detailed wiring diagrams for all included external devices 13. Maintenance A. Test Points Test points shall be provided for routine checks and alignment of the transmitter and receiver. These test points shall be readily accessible and marked for ease of servicing. It shall be possible to make measurements using conventional test instruments. If a card extender is necessary for in-service tests and adjustments, one shall be included with each station. B. Upgradeability The radio system must allow for the upgrading of modules such as the Transmitter, Receiver and control cards without requiring removal of the entire system. This will allow for both functional upgrades as well as replacements in the event of failure. C. Industry Standards All proposed radio systems shall meet or exceed all appropriate and current Telecommunications Industry Association (TIA), Electronics Industries Association (EIA) and P25 standards. The present standard for analog operation is TIA/EIA 603 and for the Digital P25 operation it is TIA/EIA 102.CAAB. D. Power Supply i. Supply Voltage The nominal power supply voltage is +13.8Vdc (negative ground). The station shall operate without degradation in performance over the range of +10Vdc to +16Vdc. The transmitter shall operate with reduced performance at a supply voltage of +8Vdc. but shall be totally inoperative below this voltage. ii. Supply Current – Idle The Total Receiver / Transmitter station assembly current drain shall not exceed the following: In Standby 625 mA and Total Active 26 Amp iii. Shutdown The station will close down (cease transmitting) when the supply voltage falls below +9Vdc nominal and shall not return to operation until the supply voltage returns to +11Vdc iv. Fuses and Overload Protection The radio system shall be protected with an easily accessible fast-blow fuse. Reverse voltage, over voltage and transient protection must also be provided. v. The AC Power Supply shall have an input fuse, electronic current limiting and voltage limiting protection, transient voltage suppressor and thermistor built into the unit as standard protection to safeguard the unit from abnormal conditions. Power supply shall be N+1, have battery backup with float charge and also provide status signals (at the rear). Including the following alarm signals: AC Voltage present/Not Present pg. 3 Cooling Fan status Internal operating status Over-Temp warning vi. Battery Backup The base station shall include a battery backup connection point for short-term primary power outages. When AC power resumes, an on board charging circuit must recharge the battery. The battery is not a part of this bid. 14. TECHNICAL SPECIFICATIONS A. Environmental i. Corrosion Prevention The supplier shall pay particular attention to corrosion prevention. The following are required where applicable, in addition to other corrosion prevention measures that the supplier may employ. Protective coating of printed circuit boards Gold plated connectors Painting or anodizing of metallic assemblies ii. Temperature The ambient temperature should range from -30˚C to +60˚C (-22˚F to +140˚F). iii. Humidity The radio system shall withstand humidity up to 90% @ +25˚C (77˚F) B. Physical Properties i. Finish All finishes shall conform to the best commercial practices for high quality equipment. Equipment provided must be of new manufacture and include original factory warranty. ii. Construction and Components All component parts shall meet the applicable EIA standards and shall be operated within specified ratings. Construction, including assembly and wiring, shall conform to the best commercial practices for high quality equipment. The equipment must be mechanically sound. iii. Equipment Instability Equipment shall not display instability due to any electronic, mechanical, or other causes that tend to make the receiver or transmitter critical in tuning or unstable in operation. iv. Transmitter TX: Carrier Frequency Stability ± 1.0ppm at (-30° C to +60 °C) Power out shall be at least 110W W VHF P25 Radio Base Station at 100% duty cycle with antenna relay v. Receiver RX: Sensitivity ≤ -118 dBm (.280 μV) (12 dB SINAD and 5% BER) vi. Size The radio station assembly shall be configured to mount on a standard 19 inch equipment rack without adapters utilizing 10RU. The assembly shall comprise a number of labeled plug-in modules so that interchanging for test and repair is facilitated. Modules shall incorporate a device which secures them in position. Any unused module positions shall be equipped with covers. pg. 4