--- In Repeater-Builder@yahoogroups.com, Ken Arck <[EMAIL PROTECTED]> wrote:
> At 08:51 PM 11/23/2004 -0500, you wrote:
>
> >I would start with the Ground to see if the continuity of
Resistance is Zero
> >Ohms. from Chasis, Cabinet, rack, etc.. especially green crud from
moisture
> >will start a resistance path to ground.
>
> <---That would be my first take on his problem. Sounds like a typical
> ground loop problem, causing the AM RF to make it into his audio
circuits.
> Hence, Rush Limbaugh!
>
> My best guess on why it disappears when he removes the duplexer is that
> ground currents are changing, causing the ground loop.
>
> Ken
>
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I agree with Ken here. We had a similar problem years ago when we
moved our -then- VHF Engineering repeater to a new site about a mile
from a station on 1450. I don't remember the details anymore, but
simply changing/adding/removing grounding around the repeater itself
made it go away.
Laryn K8TVZ
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