Ken: The K3 uses a straight-through RS-232 cable with DB-9 connectors on either end. The most common of these cables has all 9 pins connected, M-F, no crossovers. The cable is described in the K3 Utility Help.
Not all of these pins are required for normal operation, but it doesn't hurt to have them all connected. You can load firmware with just ground, TxD and RxD connected. CTS and DTR can be also used for PTT and CW keying. The K2 cable is part of the KIO2 kit. The wiring for it can be found on page 13 of the KIO2 manual, and a link to the KIO2 manual PDF is on the Elecraft web site's manual page. I know of no commercially available cable that has this wiring. Do not use your K2 KIO2 cable for your K3. 73 de Dick, K6KR -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of K. Edwards Sent: Thursday, March 18, 2010 2:26 PM To: elecraft@mailman.qth.net Subject: [Elecraft] RS-232 Cable Question I have a K2 and a K3. I clearly see in the K2 manual that a special cable is needed but it appears the K3 is a standard RS232 pinout. 1, I want to confirm the K3 does use a regular RS232 cable (before I fry something!) 2. Does any manufacture K2 RS232 cables? I didn't see anything on the Elecraft site or a quick web check... TIA! 73... --Ken WA4SQM -- The Lord's Prayer is 66 words, the Gettysburg Address is 286 words, there are 1,322 words in the Declaration of Independence, but government regulations on the sale of cabbage total 26,911 words. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
