The problem with wire Y's in your situation will be that the keying voltage from one rig will be across the circuitry of the other. This is most likely an issue whether both rigs are turned on or not. It can simply act as a shorted line to the paddle input, or it can be destructive. Bad idea.
IF ALL the devices/rigs to be keyed present a positive voltage to key on the paddle connections, double-diode "Y's" can be used (sometimes called diode "Or's"). Diode cathodes are wired together and to the key/paddle's dit/dah leads. The separate diode anodes go on to the "paddle" leads from the rigs/keyer. Each additional device will require another diode off the common points for the dit and dah (2 additional diodes total per additional "paddled" device). 73, Guy. > On Mar 27, 2011, at 14:50, Barry <w...@comcast.net> wrote: > >> Is there any reason I shouldn't make a "Y connector" so my CW paddle can >> be input to the K3 and another radio (or external keyer)? Yes, only one >> will be on at any given time. >> Tnx, >> Barry W2UP >> >> ______________________________________________________________ >> 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 > ______________________________________________________________ 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
