[aprssig] APRS needs...
scott at opentrac.org
Tue May 27 09:45:57 CDT 2008
But lacking the resources to deploy lots and lots of digis (which will
each cost the same as a 'big' digi), and a back-haul network to connect
them without tying up the input channel, I just don't see that being a
fix everywhere. Cell sites also have the ability to run separate
frequencies on adjacent cells, but we don't.
Robert Bruninga wrote:
>> In response to "build it and they will come":
>> APRS is already saturated in my area. 1200 baud
>> is a no-go for any new device.
> There is plenty of room on the 1200 baud channel if it is
> needed. But the sysops have to plan for it by reducing the
> coverage of the digis. Its like the cell phone system. You can
> always increase capacity, simply by making the cells smaller.
> If the local channel is saturated, then the sysops can either
> reduce the digi hops to one (as we did in LA) or replace the
> very wide area digis with more-but-lower digis. Or other
> I took that note above out of context but it is worthy to note
> that APRS 1200 baud networks do need to be managed to keep the
> network working optimally. And the New-N paradigm gave the
> sysops the tools to work with.
> Our 144.39 went from wall-to wall QRM down to maybe a few
> packets evey 15 seconds or so, and yet we still see everything
> we need to see in our local area... But much more reliably...
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