[aprssig] Digi "Location-Based" Callsigns and Objects

Robert Bruninga bruninga at usna.edu
Fri Jul 25 15:58:02 EDT 2014

THE APRS protocol reatains the callsign of the originating station for
objects.  Maybe the Radio LISTS in the APRS radio do not capture it, but
the protocol says the client is supposed to.

So, no, you don't need to also put the callsign in the object names.


-----Original Message-----
From: aprssig-bounces at tapr.org [mailto:aprssig-bounces at tapr.org] On Behalf
Of Brett Friermood
Sent: Friday, July 25, 2014 10:55 AM
To: TAPR APRS Mailing List
Subject: Re: [aprssig] Digi "Location-Based" Callsigns and Objects

Being objects you don't have to do anything differently than you are doing
now. The originating station of course has to identify as usual, so if you
are using a tactical callsign common practice is to put your legal
callsign in the comment of the station's own beacons. As long as one of
these is sent every 10 minutes, the station is legally identified for all
packets being transmitted whether they are digipeated positions from other
stations or objects sourced from itself.

The source callsign of an object should be the actual on-air callsign of
the originating station in most cases. In your situation why would you
feel the objects need to be sourced from your callsign while being
originated from the digipeater?

Brett KQ9N

On Tue, Jul 22, 2014 at 1:44 PM, David Andrzejewski
<david at davidandrzejewski.com> wrote:
> With all this talk of using location-based callsigns on digis, I
> thought I'd experiment with changing mine.  However, I want to ensure
> that I'm doing it right, especially with regards to IDing correctly.
> I'm using aprx on a Raspberry Pi, and I beacon a few repeater objects.
> If I set the source call to my callsign on those object packets, that
> will "break the link" - e.g., it will be coming from "KD8TWG-1" but my
> digi will be beaconing itself as something different, so nobody will
> have KD8TWG-1 in their lists.
> I'm thinking I could put it in the comment?  The thing is, I include
> the repeater's callsign in the comment, so how would I avoid confusion
> Here's one of my repeaters:
> object "146.94"
> symbol "/r"
> lat "4130.33N"
> lon "08111.41W"
> comment "146.940MHz T110 -060 W8DES"
> My current thought is I could change the comment to:
> comment "146.940MHz T110 -060 W8DES (de KD8TWG)"
> Thoughts?
> - Dave/KD8TWG
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