The socket below the VFO dial is for an In-Circuit Debugger (ICD), used for development and diagnostic purposes.
The RS-232 connector's DTR and RTS may be used for PTT and CW keying. See "PTT and Keying" on page 18 of the K3 Owner's reference manual. These lines are input to the K3. 73 de Dick, K6KR -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rich Lentz (KE0X) Sent: Wednesday, February 27, 2008 2:25 PM To: [email protected] Subject: [Elecraft] K3 Undescribed socket. What is the socket just below the "B" VFO dial on the bottom of the front panel for? Also, the RS232 jack has wires for RTS and DTR. Are these going to (can they) be enabled to indicate "Squelch," etc.? Rich _______________________________________________ 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 _______________________________________________ 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

