I would think that whatever external keying device you are using would have to connect via the KEY jack. This would be a contact closure (or the equivalent) to ground, with the KEY jack in straight key mode, via the KX3 menu.73, Bruce, N1RX
> After KXUSB terminates in a 3.5mm plug, there is no place for DTR line. > Then how is arranged the CW keying by a computer? > 73, Val LZ1VB ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft 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
