Steve Allred wrote:
> Hi guys,
> I need your help on a UHF GR-1225 that has me baffeled. There is a audio 
> buzz (high pitched) that appears on the repeated signal. It is NOT on 
> the hang time, so it's not comming from the power supply, controller 
> (RC-210), exciter or PA.. It is only present when a signal is applyed to 
> the input (service monitor or HT) of the receiver. Also, it was not 
> there when i had it configured as a repeater using the internal GR1225 
> controller.
>  
> Any ideas? Did i short out a wire and kill something in the audio 
> section of the receiver or ????? HELP!  
>  
> Thanks!
> Steve / K6SCA

Good grounding between the external controller and the rig's DC ground, 
and did you use shielded (grounded) cables to carry the audio?

Sounds like RF rectification in the audio cables.

Nate WY0X

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