----- Original Message -----
From: "Vic K2VCO" <[EMAIL PROTECTED]>
To: "Richard S. Lindzen" <[EMAIL PROTECTED]>
Cc: <elecraft@mailman.qth.net>
Sent: Friday, December 05, 2008 6:10 PM
Subject: Re: [Elecraft] RF feedback
There is a so-called "pin 1 problem" in the K3's mic input
circuitry. The fix is to jumper L4 on the front panel
board and L7 on the KIO3. These are RF chokes in the mic
return lines.
------------------------------
I just did these mods today, along with the audio upgrade
mods. I was too lazy to pull off the front panel to get to
L4, so I just jumpered pin 8 on the mic plug (not the jack
on the K3) to the metal shell of the plug.
Dave Hachadorian, K6LL
Yuma, AZ
.
_______________________________________________
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
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
