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[aprssig] D700 digi and unproto

Robert Bruninga bruninga at usna.edu
Mon Feb 13 20:21:16 UTC 2006


>>> "Steve Sobodos" <steve at scsvideo.com> 02/13/06 2:30 PM >>>
> 2.  The D700's digi's have a digi alias of WIDE1-1, 
>... and the trackers use "WIDE1-1, WIDE2-2" ...

Yes, but make the trackers use WIDE1-1,WIDE2-1.
Two hops is more than adequate in that area and 3
hops would be excessive over the entire LA area.

> The first D700 that heard a location beacon would 
> strip off the WIDE1-1 and digi the WIDE2-2
>which would only be picked up by the LA/OC network 
>The LA/OC network might hear the WIDE1-1 ...
>beacon but it would do little harm.
>
>Downsides:   The command post is less likely to get 
>one-hop beacons as the one local digi might be out 
>of range of the command post.

All digis everywhere should also respond to WIDE1-1.
THat is the beauty of it.  If the big digi hears it first,
it sends the packet on its way.  If the mobile D700
also hears it, it will digipeat it once, but the big
digi (UIDWAIT set to zero) will have alrady sent it
and so the big digi will not duplicate it a second time.

But if the big digi did not hear it the firs time, then
it will digipeat it from the D700.  THis is how the
WIDE1-1 fill-in-digi system works.

Bob, Wb4APR







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