[aprssig] WIDEs

[Curt, WE7U]

On Wed, 5 Jan 2005, AE5PL Lists wrote:

> Ahh, the ping-pong effect.  Most TNC firmware (including Kantronics)
> does not check for duplicate digipeats.  The Kantronics does do dupe
> checking, but only for UIFlood (and UITrace?) aliases.  This is why
> RELAY,WIDE,WIDE is so much worse than RELAY,WIDE2-2 and should not be
> encouraged.

Each TNC checks for the first digipeater field that doesn't have the
"digipeated" bit set, then checks whether it's callsign or one of
it's aliases matches that digipeater callsign.  If a match, it gets
digipeated.

If you had wide,wide,wide,wide,wide,wide,wide,wide as the path, and
two digipeaters near each other responded to wide, it'd go back and
forth between them just like a pong game.  Really sucks, but that's
the way it is.

--
Curt, WE7U.   APRS Client Comparisons: http://www.eskimo.com/~archer
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