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[aprssig] 9600b UHF APRS IS THE FUTURE OF APRS

wa7nwp at jnos.org wa7nwp at jnos.org
Mon Oct 9 17:32:07 UTC 2006


>> It's not the coverage that's the problem,  it's the number of users in
>> the collision domain and the size of the  aloha circle vs. digipeater
>> location and user paths.
>

> So, a system which can cover less area (at reasonable HAAT given the
> expected
> coverage area), will have a better performance margin from my perspective.


Don't forget "packet time" is also part of the equation.  A 9600 baud
network with packets 1/4 the size of a 1200 baud network can handle 4X
(give or take) the number of users in its Aloha circle.

Bill - WA7NWP





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