--- In Repeater-Builder@yahoogroups.com, Jeff Otterson
<[EMAIL PROTECTED]> wrote:
Jeff, I disconnected the audio line to the exciter. NO Noise, so
then I disconnected the audio from the Rx. The noise was still
there. The only thing left is the NRHC 3+ controller. What would
generate noise there, Bad Cap? What should I look for? Tnx...Jim
> Bad capacitor in the audio stage?
>
> Jeff
>
> At 09:39 AM 11/25/2004, you wrote:
>
>
> >Hi group!
> >I have a vhf pll exciter that is very noisy, by that I mean
scratchy
> >sounds on the carrier. When I unplug the PA and run the exciter
> >alone with no audio into a dummy load I get this noise, so I know
it
> >is coming from
> >the exciter. I cleaned all the contacts that the audio and
bandpass
> >boards plug into and also the edge connecter plug, ICOM etc.
Touched
> >all posts with a touch of new solder, but still have it.
> >I even swapped audio and bandpass boards to no avail. So I
replaced
> >it with another exciter, and this one is a
> >lot quieter. What would cause this exciter to generate noise? I
> >modified the Band Pass Filter from G2 to a G1 and replaced the
> >aluminum slug with a ferrite one. I would like to fix this one if
I
> >can as they are hard to come by. Is there any suggestions where I
> >should start looking? Has anyone else had this problem? Thanks in
> >advance.
> >
> >Jim KMØK
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >Yahoo! Groups Links
> >
> >
> >
> >
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