Download SDR Radio

Ham Radio & Digital Techniques
(Freddie Sulyma WB2GFZ, [email protected])
Traditional Computer/Rig Interfaces (Hardware)
 Quick review of basic RS-232 ports with configuration
demonstration utilizing USB to RS-232 adapter
 Quick review of Computer Sound Card
Virtual Computer/Rig Interfaces (Software)
 RS-232 capability via software applications
o VSP Manager (Free Ware)
o Com0com (Free Ware)
 Sound Card Interface via software application
o Virtual Audio Cable ($30 Application)
o VAcard (Freeware)
Flexradio 1500
 Basic intro with questions and answers
Fldigi
 Digital Modem Program
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Traditional Computer/Rig Interface (Sound & Control)
Radio
Computer
Application
eg. Fldigi
Sound Card
MIC
TX Audio
Head Phone
RX Audio
RS-232
Serial Port
RX/TX Audio
Rig Control
Virtual Sound & Control Interface
Radio
Computer
USB Cable
Power SDR
Radio Software
Virtual Audio
Pair
Fldigi
RX/TX Audio
Digital Modem Software
Virtual Audo
Virtual RS-232
Applications
Virtual RS-232
Pair
Rig Control
NOTE: The USB Cable is the only external interface
between the Computer & Radio. The Virtual Audio &
Virtual RS-232 are performed by internal software
FIGURE 1
SDR
Page 2 of 10
Serial Ports (RS-232, Hardware)
Hardware:
RS-232 - Traditional name for a series of standards for serial binary single-ended data and control
signals connecting between a DTE (Data Terminal Equipment, eg. Computer) and a DCE (Data Circuitterminating Equipment, eg. Modem).
Hardware RS-232 ports allow communications in both directions
EIA232 communication function and connector types for a personal computer and modem. DCE devices
are sometimes called "Data Communications Equipment" instead of Data Circuit-terminating
Equipment.
The voltage levels are not your typical logic voltage levels (eg. TTL 5 VDC). The voltage levels that
represent 1s and 0s are between Positive and Negative voltages and ranges from +3 to +20V? and -3 to 20? VDC
Page 3 of 10
Virtual RS232 Ports (Software):
FIGURE 1
VSP Manager, RS-232 port allow communications in just in one directions
VSP Manager (Freeware)
http://k5fr.com/ddutilwiki/index.php?title=VSP_Manager
Another Virtual Communication port application to consider is Com0com (Freeware)
http://com0com.sourceforge.net/
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Virtual Audio Cable (VER 4.10, Software Download, $30):
FIGURE 1
Virtual Audio Cable
http://software.muzychenko.net/eng/vac.htm
How To Setup Virtual Audio Cable (VAC) 4.0x with PowerSDR
http://kc.flexradio.com/KnowledgebaseArticle50230.aspx
VAcard - Software Audio Driver for Streaming Audio Applications (Freeware)
http://www.datanab.com/audio/VAcard.htm
Page 5 of 10
FlexRadio Systems
http://www.flex-radio.com/
FIGURE 1
PowerSDR Application (VER 2.0.16)
Using Fldigi with PowerSDR
https://fedorahosted.org/fldigi/wiki/Documentation/HOWTO/PowerSDR
1.
2.
3.
4.
5.
Installation
VAC configuration
VSPmgr configuration
PowerSDR configuration
Fldigi configuration
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Fldigi (VER 3.20.32), Software By W1HKJ & Associates (Free Ware)
http://www.w1hkj.com/Fldigi.html
Beginners’ Guide To Fldigi file:///C:/Users/derf/fldigi.files/help/beginners.html
Digital Modem Program for Linux, Free-BSD, OS X, Windows XP, W2K, and Vista
Modes:













CW AFCW (A2).
DominoEX: (4,5,8,11,16,22)
Hell: Feld Hell, Slow Hell, Feld Hell 5, Feld Hell 9, FSK Hell, FSK Hell-105, Hell 80
MFSK: from 4 to 64 tones
MT63: 500, 1000, 2000 Hz bandwidths
Olivia: – several flavors from 250 to 1000Hz bandwidth and with from 8 to 32 tones
PSK: BPSK-31, QPSK-31, BPSK- 63, QPSK-63, BPSK- 125, QPSK 125, BPSK-250,
QPSK-250
RTTY: 45 baud, 50-baud, 75-baud
Thor: (4, 5, 8, 11, 16, 22)
Throb: (1, 2, 4)
WWV: calibration of soundcard oscillator)
Frequency Analysis: measure the frequency of a remote signal that is transmitting a
steady carrier.
Tune: generates a continuous single frequency audio signal at the exact frequency to
which the waterfall cursor has been set
Digital Mode Information:
http://www.wb8nut.com/digital.html
Three main digital packages are:
FLDIGI by David Freese, W1HKJ and Skip Teller, KH6TY: http://www.w1hkj.com/
HRD/DM780 by Simon Brown, HB9DRV: http://www.ham-radio-deluxe.com/
MULTIPSK by Patrick Lindecker, F6CTE: http://f6cte.free.fr/index_anglais.htm
Patrick’s MULTIPSK is a great technical achievement. He offers the most sensitive modems and
detection routines available and many modes (such as ALE-400) that are not available in any
other software. The challenge is his user interface is very dense and can be tough on a first-time
user. His philosophy is he wants all the controls in one place – and they are.
FLDIGI is a very elegant package that is fully featured but simple to setup and use. HRD is not
so simple, but is a great package and when used with DM780 is very fully featured. MULTIPSK
offers the most sensitive modems and detection routines available and many modes (such as
ALE-400) that are not available in any other software. The challenge is his user interface is very
dense and can be tough on a first-time user.
Page 7 of 10
Fldigi - Continued
Using Fldigi with PowerSDR (VAC, VSPmgr, PowerSDR & Fldigi Configuration)
https://fedorahosted.org/fldigi/wiki/Documentation/HOWTO/PowerSDR
___________________________________________________________
Additional Information:
http://educationalradionet.blogspot.com/search?q=fldigi
http://wb8nut.com/digital/ (Provides audio sound different modes)
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Appendix A
RETURN
Page 9 of 10
Appendix B
RETURN
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