[aprssig] ACARS

[Brian Webster]

Motorola signaling system is called MDC 1200 (1200 baud), it is a
proprietary format that other companies have built decoders for, they just
can't encode it. Zetron comes to mind with a decoder, you might find some
sound card decoder somewhere if you look for MDC 1200 decoders. There was an
older system called MDC 600. You might also run in to a format called GStar
which was invented by GE Radio about the same time Motorola started with
theirs. Some Motorola radios can send this format too.

Brian, N2KGC


-----Original Message-----
From: Spider [mailto:spider at rivcom.net]
Sent: Saturday, January 01, 2005 2:53 PM
To: TAPR APRS Mailing List
Subject: Re: [aprssig] ACARS



----- Original Message -----
From: "Earl Needham" <needhame1 at plateautel.net>
To: "TAPR APRS Mailing List" <aprssig at lists.tapr.org>
Sent: Saturday, January 01, 2005 12:26 PM
Subject: Re: [aprssig] ACARS


>
>         Gee, this just keeps getting harder.  I'd really like to "see"
> airplanes on my APRS screen, in addition to stations actually running
> APRS.  Is there a simple, easy, not expensive (read: NOT $750 for a box)
> way to do this?
>

Yeah, me too!  We were looking at providing this data on FireNet.  The
people interested in that stuff seemed to have burned out on the program
once we got looking into it.  No one is currently developing anything out
there...and all the soundcard software was at a standstill.

On another note, these newer Motorola HT's like the 1250's can be programmed
to squirt out packets that ID the unit.
A couple of our Fire Departments here are squirting out the packets but
nobody has any of the decoding equipment in dispatch, etc.  That too would
be a GREAT project for APRS!  It sounds like 2400 baud but have not dug into
this much.  Any out there know?

Jim, WA6OFT




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