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[aprssig] PPM APRS

Andrew Rich vk4tec at tech-software.net
Wed Jul 1 21:12:17 UTC 2009

There are heaps of cheap video tx modules around.

Is there any reason why they can't be PulsePositionModulated ? 

Should be enough bandwidth 

I have been looking closely at MODE S aircraft signals - 1 MB at 8MHz bandwidth

Sounds like a click. Sends position

Also been looking at AIS - 9600 self organising GMSK. 

Maybe good ole 1200 baud will be a round for a while.

I have been using radio modules - 19k2 on air - 100 mW beef up to 30 watts.


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