Low cost Radio tranceiver Range :5Km Baud Rate : 19200-115200baud

Poniasahgsour Uryeghama wrote:


Sure. Many ham radio tranceivers equipped with AX.25 Terminal Node Controllers can do this. Here's one:
    http://www.chq-inc.com/ken/th-d7ag.html
There's Linux support for these things.
The technology is somewhat dated. The default baud rate is 1200 baud. But it's possible to rework much of the gear for higher baud rates.
                John Nagle
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wrote:

The good thing with the original 1200 bps half duplex audio FSK system is that it works with practically any unmodified radio telephone with a microphone and headphone connector, thus simplifying any type acceptance issues.
The 27 MHz Citizens Band might be an alternative to reach the 5 km distance, provided that data transmission is allowed on the CB frequencies in a particular country. Of course, the 1k2 half duplex throughput is "slightly" below the 19k2.. 115k2 full duplex throughput expected :-).
Paul
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Have a look at http://www.aerocomm.com/OEM/AC4490.htm
900MHz transceivers, half-duplex, up to 115.2 Kbps, Up to 20 miles (32 km), approved in the U.S., Canada and Australia for mobile applications;
Stefan
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