[arm-allstar] Noise from link key up

[Doug Crompton]

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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