Motorola IIi Hybrid Trunk decoding

Has anyone written a motorola trunk decoder for gnuradio? I’d like to be
able to dump all active audio in a trunk to separate streams by
talkgroup. I’d love to know about any trunk decoders in general.

Thanks!

-Brett

Hello,

I considered doing a Motorola decoder, but no code yet. It uses a basic
3600 baud FSK modulation for the control channel data.

Here are some links.

General Trunked Radio System information.
http://wiki.radioreference.com/index.php/Trunked_Radio_Systems

General Trunked Radio Decoders.
http://wiki.radioreference.com/index.php/Trunked_Radio_Decoders

Trunker (DOS) with source code link.
http://wiki.radioreference.com/index.php/Trunker

73 Eric
----- Start Original Message -----
Sent: Tue, 05 Apr 2011 13:54:47 -0500
From: “Brett L. Trotter” [email protected]
To: [email protected]
Subject: [Discuss-gnuradio] Motorola IIi Hybrid Trunk decoding

Discuss-gnuradio mailing list
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----- End Original Message -----

On Tue, 2011-04-05 at 16:24 -0400, Eric C. wrote:

Hello,

I considered doing a Motorola decoder, but no code yet. It uses a basic 3600
baud FSK modulation for the control channel data.

I have a Smartnet II decoder on CGRAN, which will log the whole trunk to
disk by talkgroup:
https://www.cgran.org/wiki/Smartnet

It’s not exactly production-grade software, but it works.

I don’t know anything about IIi hybrid, but I suspect it is the same as
II on the downlink (ie not backhaul) side.

–n

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