[aprssig] D-STAR VOICE value?

Pete Loveall AE5PL Lists hamlists at ametx.com
Tue Jul 8 10:29:35 EDT 2008

> -----Original Message-----
> From: Robert Bruninga
> Sent: Tuesday, July 08, 2008 9:11 AM
> To: 'TAPR APRS Mailing List'
> Subject: [aprssig] D-STAR VOICE value?
> Actually, I think the beauty of DSTAR voice is that once it is
> in digital form, it can go anywhere in the world via the
> infrastrcuture.  Yes, we can do that via Echolink and IRLP, but
> by starting off with digital voice in DSTAR, then the voice can
> be shipped anywhere with no loss of quality.
> And that is a great way to do what I have been trying to do with
> APRS since we came up with the Automatic Voice Relay System
> (AVRS) concept in the year 2000 time frame...  Just identify the
> callsign you want to talk to, let APRS, IRLP and ECHOLINK set up
> the call.
> http://www.ew.usna.edu/~bruninga/avrs.html  This is one of the
> main reasons we need to have FREQUENCY in our APRS packets so we
> can contact the end station...
> DSTAR has the potential do this all directly within its system
> without having to glue all these different pieces together as we
> do in APRS (or so I assume).

Interesting you should mention this, Bob.  I commented to the folks manning the D-STARUsers.org booth after your presentation at Dayton that the basics of everything you talked about on AVRS was already up and designed into the D-STAR protocol and equipment.  Because D-STAR already carries callsign and repeater information in the protocol, anyone on a networked repeater system (most) can talk to anyone on any other networked repeater system by simply "dialing in" the other person's callsign.  Essentially, AVRS brought to the next level where network knowledge is not required and the necessary information is included in every transmission via the D-STAR protocol design.

As I say, this type of communication is going on daily, world-wide on the D-STAR repeater systems.


Pete Loveall AE5PL
pete at ae5pl dot net

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