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[aprssig] Low band APRS (was Re: 9600b UHF APRS IS THE FUTUREOFAPRS)

Robert Bruninga bruninga at usna.edu
Tue Oct 10 21:09:13 UTC 2006


> One thing that quickly became clear on 30m was that 200Hz SSB 
> tone spacing
> requires a very precise oscillator.  For unattended APRS
operation at
> 30m you're talking 1 or 2ppm accuracy.  At 10m you'd have to
do even
> better. 

I was thinking in terms of 1200 baud.  That makes the frequency
Tolerance much less and also lets you use any-old TNC.  I think
1200 baud is legal on the 10m band?

Bob, WB4APR





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