Yes, possibly a bad capacitor anywhere in the audio chain.
What else do you have connected up? A receiver?
Happy Thanksgiving!
Jeff
At 11:09 AM 11/25/2004, you wrote:
>--- 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
> > >
> > >
> > >
> > >
>
>
>
>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>
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