[aprssig] TEMPn-N and callsign digipeating

[VE7GDH]

Jason KG4WSV wrote...

> This reinforces what I have always felt was fundamentally wrong with
> the "fill-in digi" concept.  If I need help getting out, I need help
> receiving, too!

Yes, but if you successfully send a message out via a "fill-in" digi and
someone replies using the same path that you used, they should theoretically
be able to reach you. You will usually get two chances to receive the
reply... one from the (usually) higher elevation WIDEn-N digi (if you can
hear it direct) and then again when it is digi'd via the nearby fill-in
digi that heard the WIDEn-N digi. You probably need help getting out
because the higher elevation WIDEn-N digi hears too much. Everyone
is politely holding off until the frequency is clear as far as their
receiver is concerned. However, if the high elevation WIDEn-N digi does
actually get the reply, and the sender used a path that included the fill-in
digi that you used, there would be a higher chance of success.

Here's a can of worms. Would it ever be reasonable for someone sending a
reply to use DIGI1,WIDE1-1 for the reply path? I know what it would do...
every fill-in digi that hears DIGI1 would digipeat the reply. Can anyone
think of a circumstance where it could be justified? I'm not mulling over
beaconing with WIDE1-1 anywhere other than in the first position... just a
message or a reply. I nearly deleted this paragraph before hitting send, so 
please be kind!

73 es cul - Keith VE7GDH
--
"I may be lost, but I know exactly where I am!"