[aprssig] Using SSID's outside 0 to 15
Kai Gunter Brandt
kai.brandt at hjemme.no
Thu Mar 4 09:35:23 CST 2010
Lynn W. Deffenbaugh (Mr) wrote:
> kai.brandt at hjemme.no wrote:
>> If it's only one-way from HF to APRS-IS / V/UHF then it's probably ok.
>> But if you want to send a message to the HF station i think this is
>> going to be more problematic.
> APRS messages do NOT use the AX.25 header for the intended recipient.
> The recipient of the message is in the payload portion which is sent in
> un-encoded ASCII on all mediums (that I know of). Any replies or acks
> (which are really just APRS messages with special text) would be sent
> from the extended -SSID on HF or APRS-IS and would then (should then) be
> gated back to VHF as 3rd party packets within which the IGate's call
> goes in the AX.25 header and the gated source call again goes into the
> payload which can handle anything.
Yes this is true but i got the impression that the senders callsign was
xxxxx-AP then the TNC is not going to accept that.
But then it's more clear to me how this application is working.
> Check out aprs101.pdf or just look at a bunch of raw packets on your
> favorite APRS client (web or otherwise). Or just send a message to
> KJ4ERJ-AP (an APRS-IS client) from your RF and see if you get an ack.
> If I'm around, we could QSO.
I got an ack.
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