Even if both are transistor keying (open collector, same polarity); you still wont have any probelms. the output that is keying wins! 73 Dave G3NKC
________________________________ From: Barry <[email protected]> To: [email protected] Sent: Wednesday, 9 January 2013, 16:30 Subject: Re: [Dx4win] operating CW from keyboard and keyer without unplugging Ed, I'm not Jim, but I've paralleled my keyer output and serial port computer-generated CW for many years. Just make sure your keyer has an isolated output, i.e., a relay (reed or solid state) rather than keying directly via a transistor output. Barry W2UP On 1/9/2013 09:16, Ed Douglass wrote: > A question for Jim Reisert: > > Using DX4WIN, is it possible to operate CW from a keyboard with a serial port > connection between the computer and the transceiver and then parallel the > output of a keyer (Heathkit uMatic Keyer) with the cable from the serial port > in the plug that goes into the CW jack on a Kenwood TS--850? > > What I am trying to accomplish is to be able to operate CW from a keyboard OR > a paddle/keyer without having to unplug one and plug in the other. > > Thanks for your advice. > > 73 de Ed, AA9OZ > > ______________________________________________________________ > DX4WIN mailing list > Home: http://mailman.qth.net/mailman/listinfo/dx4win > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net/ > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ DX4WIN mailing list Home: http://mailman.qth.net/mailman/listinfo/dx4win Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net/ Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ DX4WIN mailing list Home: http://mailman.qth.net/mailman/listinfo/dx4win Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
