Also, I have found a PA deck that is poorly tuned will oscillate
too.
Neil - WA6KLA
Bob Dengler wrote:
>
> At 1/19/2006 08:17 AM, you wrote:
> >Ok guys I think I resolved the squeeling problem. I Got to the site
> >this morning while guys were using the rptr and the problem was
> >existing. When tuning the PA awhile back I noticed if you went to far
> >one way it would oscillate (feedback, whatever) or go spurrious. Where
> >I thought was the proper setting was just on the edge of this. I
> >retuned the PA and all cleared up. Even cleaned up Rec'd audio just a
> >bit.
> >This has been happening more in the early mornings. May be the frost,
> >dampness on the antenna created a slight impedence mismatch. Using a
>
> If slight antenna impedance changes are causing your PA to oscillate, your
> PA needs servicing or replacement. At the very least you need an isolator
> on the PA output so it "sees" 50 ohms across the band.
>
> Bob NO6B
>
>
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