[aprssig] Should a digipeater digi a message sent to itself?

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Tue Mar 20 14:52:41 CDT 2012

APRSISCE/32 explicitly suppresses digipeating packets that it originally 
transmitted (it's basically a dupe, having been transmitted once).  It 
WILL, however, digipeat message packets from other stations, even if 
they address the digipeater.  Digipeating is all about the first unused 
component of the packet path, not the packet content, IMHO.

There may be other RF stations of the same base callsign that are 
listening for messages addressed to the digipeater, so if there's an 
unused path component that the digi responds to, then I believe it 
should be digipeated.  Unless, of course, it was already recently 
repeated by that digi.

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

On 3/20/2012 3:41 PM, Andrew P. wrote:
> Looking at the digipeat storm I was just involved in, I was wondering: should a digipeater repeat a packet or message addressed specifically to that digipeater?
> My station was configured as a WIDE1-1 digi, so it might have repeated the queries and responses it got back (though it shouldn't because the other digi should have decremented the SSID of the alias to zero). Regardless, should it have recognized that it was the designated destination station for the packet and not digipeated the packet again even if the packet would have otherwise been digipeated?
> Do other digipeaters recognize when they are the destination and not just a relay?
> Just curious.
> Andrew Pavlin, KA2DDO
> Sent from my Verizon Wireless BlackBerry
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