[Elecraft] K2 RF Feedback

[David Pratt]

Stewart - Did you ground the shell of the mic connector on the K2? I 
found that the r.f. feedback that I was getting was completely cured by 
the suggested mod on the Elecraft web site.

73 de David G4DMP

In a recent message, Stewart Baker <stewart at baker.nildram.co.uk> 
said....
>Given a few hours free I decided to investigate a problem with RF feedback that
>I had been getting with my K2.
>Occasionally on 80m I had received reports that the TX audio was not 100% and
>after backing everything off, things improved. It was only when I noticed that
>on 40m I could provoke the RF feedback that I have gotten around to doing
>something.
>After checking the mic leads etc I decided that the RF was getting into the
>input of the speech amp/compressor IC.
>The cure was to fit a 1mH RF choke (out of the junk box) in series with C32.
>This provided an immediate and complete cure. Hope this helps someone.