The K3 RS232 port is just that ... RS232. So, no level-shifting transistor (or "keying transistor") is needed. Any software that sends CW via the serial port on the PC can key the K3 directly. That's the beauty of the K3 design ... well, one of hundreds of beautiful things about the K3. Via the configuration menu, either RTS or DTR can be chosen for CW keying, in addition to PTT. On that same serial port, the RxD and TxD lines are used for radio control. Just use a standard generic serial cable, nothing else.
73, Ed - W0YK > Ed - my understanding is that N1MM does NOT support the "KY" > command set. I too use N1MM to key through the serial port > but use a simple single transistor switch to do it. > > The "KY" command set would allow one to key WITHOUT any > additional "keying" > circuit. See page 309 of the N1MM Logger manual released on > 7-10-2007 - under Supported Radios - Section 50.3 Elecraft > for a reference. 73 -- Don N4HH > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Ed K1EP > Sent: Monday, October 15, 2007 5:42 AM > To: [EMAIL PROTECTED]; elecraft@mailman.qth.net > Subject: Re: [Elecraft] [K3] CW via serial cable question > > <SNIP> > > > >I've been reading about the ability of the K3 to have CW sent on the > >serial cable used for rig control. From memory this was > possible on the > >K2 but most 3rd party logging/contest programs didn't support this. > > <SNIP> > > I was using this feature over the weekend to send CW using > the serial cable line. I was using N1MM logger with my K3. > > > _______________________________________________ > 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 > _______________________________________________ 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
