[App_rpt-users] Audio Hum

[Mike]

Going out on a limb here a bit...
If it does not look like a normal 'ground' type of audio hum...
If your exciter on your tx'r is synthesized,
it may be a digital ground issue of sorts if the clock from it is making 
noise on your audio lines.

something to look for.
let us know what you find if anything

...mike/kb8jnm

On 9/19/2018 10:49 AM, lengriff at optimum.net wrote:
> Recently, my repeater at 42690 began developing an audio ' hum ' . An
> Asterisk restart does not stop it. A reboot is required.
> It is NOT power supply related. I tried substitute supplies for the Pi and
> Repeater. The message log shows not related errors.
> 
> It is software related somehow.
> 
> [ short audio file attached ]
> 
> Len
> WB2HKK
> 
> 
> 
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