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[aprssig] PIC processor for APRS info for D-STAR mobiles?

Pete Loveall AE5PL Lists hamlists at ametx.com
Tue Jul 8 21:48:05 UTC 2008


> -----Original Message-----
> From: Robert Bruninga
> Sent: Tuesday, July 08, 2008 1:29 PM
> To: 'Pierre Thibaudeau'; 'TAPR APRS Mailing List'
> Subject: Re: [aprssig] PIC processor for APRS info for D-STAR mobiles?
>
> Which gets me back to square one which I was after all along...
> I wanted to use this original D-STAR GPS capabilty for example
> to display something like the location of an APRS object such as
> the local AARC club meeting tonight using this format:
>
> $GPGGA,...
> AARC    ,Mtg tnite on HF @8PM

> and bearing to the meeting.  But I interpreted what Pete says
> there was no such display capability...

As I indicated and you understood correctly, the "message" is not displayed on the radio front panel from that string.  It arrives to the front panel (not in the course/bearing display, by the way) via a different method which is not exposed by the radio.  Consider the Icom GPS information "read-only" and that should help.

> But I assume if there is any garbling of the data under weak
> signal conditions, than then the silence is no longer silent but
> can contain garbled sounds...  If that is correct, then that is
> why I thought that a more robust mute might be required..

But, if the voice portion becomes garbled, so is your mute function.  Remember, the audio information has forward error correction, the control information does not and is far more susceptible to corruption.

73,

Pete Loveall AE5PL
pete at ae5pl dot net







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