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[aprssig] buoys...

Robert Bruninga bruninga at usna.edu
Thu Jan 18 16:07:21 UTC 2007


> I assume that since you're only interested in Chesapeake Bay, 
> you have sufficient coverage if you have an antenna for a 
> digi up a hundred feet or so?
> 
> You probably couldn't for instance, track an ambitious sea 
> kayaker down the entire Pacific Coast, using the terrestrial 
> APRS network.

Well, with the height of those mountains out there, I would
think it would be quite reliable out several miles.  The only
problem is the QRM on the channel and the power that the Kayak
would run.  A tracker with a 30W amp would be nice.  The TX
average power for 1 sec once every 2 minutes is only 1% of
normal TX power, and so it does not take very much battery
capacity (just peak current).

Bob, Wb4APR





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