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 <[EMAIL PROTECTED]>
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.
_______________________________________________
Elecraft mailing list
Post to: [email protected]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft Help:
http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
