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Transmission of digital signals over Amateur Radio, including modes like PSK-31, RTTY, JT-65, JT-9, etc.
8
votes
Accepted
Can an amateur use cellular technologies with SDR?
Yes it can be done, and there are some huge advantages:
Better use of bandwidth
Existing chipsets/support/implementation
Low power
In fact there's little reason why one couldn't essentially replac …
4
votes
HF Digital Mode Band Plan for the USA
There are a number of sites attempting to document HF digital band plans. You'll have to poke around a bit, though, since people are experimenting.
An internet search for "HF digital band plan" will …
4
votes
Accepted
How can I generate a list of APRS IGates on 30m?
The APRS system and protocol itself doesn't track iGate type or frequency. There is a list of active iGates, but there is no frequency information for them, or for the packets they receive.
Further …
3
votes
Accepted
Store-and-forward capable satellites in operation?
Some otherwise operational amateur radio satellites have store and forward, however none of them appear to have store and forward enabled or working at this time:
AO-7
AO-7, launched in 1974, included …
0
votes
LOS One-way radio system, 4km with at least 1000bytes/s
Amateur radio doesn't have a convenient off the shelf solution for you. Typical packet radio modems support up to 9,600 bits per second, which, after overhead, will be less than 960 bytes per second. …