[App_rpt-users] Motorola GM300 Transmitter PTT Issue With APP_RPT & DMK URI

[Sam Nabkey]

I would also check the COS polarity.  I had the exact issue yesterday
during a similar set-up.

Sam...
On Nov 4, 2013 1:58 PM, "Andrew Sylthe" <asylthe at kc9ona.com> wrote:

> Hello app_rpt users,
>
> I'm new to using app_rpt, and so far it looks like a great solution for a
> repeater controller.  I'm excited to get my system up and running, and
> linked into the Allstar Link Network.  I downloaded ACID from
> https://allstarlink.org/, and installed the distro quite painlessly.  I
> have the system setup to download my Asterisk configuration files
> automatically from AllStar Link.
>
> I purchased a URI from DMK, and made my own custom cable following the
> example found here http://ohnosec.org/drupal/node/138 for a pair of
> Motorola GM300 8 channel radios.  I decided to go with the "Processed
> audio" configuration, and do have JU551 in position 'B' on the receive
> radio (and transmit radio for that matter).  I'm sending COR from the radio
> to the URI.
>
> I wasn't able to run 'radio tune rxnoise' from within Asterisk.  I'm
> assuming that may not work because I'm using processed audio, not flat.  I
> found another post on this mailing list from some time ago indicating that
> to be true, but correct me if I'm wrong.
>
> Here is the problem that I'm having:  The transmit radio becomes keyed as
> soon as Asterisk starts.  I'm not sure why the URI / app_rpt is setting PTT
> to high when the receive radio isn't receiving a signal.  The receive radio
> is setup to decode PL, and I've jumpered the mic hangup to ground (so the
> radio isn't stuck in monitor mode).  The transmit radio will eventually hit
> its TOT, and unkey.  I've spent a good amount of time scouring the internet
> for a solution to the problem before starting this email thread.  Any help
> would be greatly appreciated.
>
> I hope that someone else has had this same problem, and that there is an
> easy fix.  If not, I'm happy to share any and all additional information
> necessary for a solution to the problem.
>
> Thank you for your time in advance!
>
>
> --
> Andy
>
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>
>
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