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[aprssig] alt input digipeater implementation (brain storm)

AE5PL Lists HamLists at ametx.com
Thu Mar 31 16:05:09 UTC 2005

Another method (in use today):

Place an IGate on your alternate frequency.  The IGate can be located at
other than a digipeater site allowing single digipeater coverage area
for your local operations if you want.  Configure a second IGate on the
shared APRS frequency (144.39 in the US) to gate everything heard by the
alternate IGate to RF.  javAPRSIGate has this capability.  The IGates
and digipeaters can all be at different locations or some/all of them
may be collocated.  No packets gated to the alternate frequency will
show up on the shared frequency because the alternate frequency IGate
won't gate them back to APRS-IS.  Advantages: full APRS support
(including messaging) on the alternate frequency, full visibility on the
shared frequency for alternate frequency users, gated paths are limited
to IGate paths, full CSMA support.


Pete Loveall AE5PL
mailto:pete at ae5pl.net 

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