[Elecraft] KPA100

[Don Wilhelm]

Bob,

This is a case where counterpoise wires may help you identify the source of
the problem.
Cut a wire a quarter wavelength at each of the troublesome bands and fasten
one end to the KPA100 ground screw - if the problems go away, the problem is
in your antenna system. Knowing where to look for the problem is half the
solution.

73,
Don W3FPR


> -----Original Message-----
> Got it completed and installed and its putting out 110+ watts on each
> band but-----  I'm getting rf feedback on some bands.  I use a Gap Titan
> vertical and an 88' vee.  The wire is quiet below 15m but much feedback
> on 15, 12, and 10.  The vertical is quiet on 80, 40, and 30 but gets bad
> from 20 up and 10 is really bad.  The swr's range from 1.0 to 2.0 to 1,
> read on the K2 and an outboard swr meter.  I read through the archives
> but most of the feedback problems were on 40m and mine are on the higher
> bands and vary with the antenna I use.  Any ideas will be greatly
> appreciated, you guys have always bailed me out before.
>
> Bob Baxter aa7eq
>