[aprssig] PPM APRS
Andrew Rich
vk4tec at tech-software.net
Wed Jul 1 17:12:17 EDT 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.
Andrew
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