[arm-allstar] Noise from link key up

[Robert Conklin]

Greetings Doug, thank you for chiming in.
It is Hamvoip Allstar controlled, latest version using Rpi3 and ARA1+
interface.
Anomaly does not occur with local RF or thru IAX.
Thinking I've got it narrowed down a bit but still don't know what going
on;
Seems to occur only when another Allstar controlled rptr of mine operating
on a different LAN a few miles away is linked into the same node or hub as
the rptr/node at my QTH. Both nodes are on different servers.

--
Robert Conklin
*N4WGY <http://qrz.com/db/N4WGY>*


On Sun, Aug 25, 2019 at 8:21 PM "Doug Crompton via ARM-allstar" <
arm-allstar at hamvoip.org> wrote:

> Robert,
>
>  What is the repeater control? Allstar or a separate controller? If you
> isolate Allstar from the repeater and use iax to it or just a simplex radio
> does it do the same thing?
>
>
> *73 Doug*
>
> *WA3DSP*
>
> *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
>
>
> On Sun, Aug 25, 2019 at 6:56 PM "Robert Conklin via ARM-allstar" <
> arm-allstar at hamvoip.org> wrote:
>
> > Dear Folks, I have a CDM based UHF machine that's been running
> beautifully
> > for years now. Have replaced/re-imaged the uSD a few times over that
> period
> > as a preventative maintenance measure.
> > All of a sudden and with no configuration changes it has began making
> > terrible feedback loop/white noise when key up from a link and it has a
> > hard time dropping the PTT once keyed.
> > This does not happen when it's keyed from local RF or keyed from
> internally
> > generated telemetry.
> >
> > Antenna system measures fine.
> > Cavities measure fine.
> >
> > Even though it seems to only happen when key up from a linked connection
> I
> > tried isolating the cdm exciter from the micor PA with a dummy load, made
> > no improvement. Turned off the RX radio and it still makes the terrible
> > noise when keyed up from a connected link.
> > Possible clue: When linked to different allstar rptr that has parrot
> turned
> > on, when I talk thru my repeater the echo is returned from the linked
> > machine with no noise. Odd.
> > Any ideas I can chase will be appreciated, thanks!
> >
> > --
> > Robert Conklin
> > *N4WGY <http://qrz.com/db/N4WGY>*
> > _______________________________________________
> >
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> >
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> >
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