Thank you Vernon and thanks to all the others who have answered my questions on and off the reflector. I have already wired up a temporary switch this afternoon and things work just fine.
73, phil, K7PEH On Mar 14, 2011, at 8:14 AM, Vernon Mauery wrote: > On Sun, Mar 13, 2011 at 11:04 PM, Phil Hystad <phys...@mac.com> wrote: >> Question: does the PTT IN RCA/Phono connection merely operate a relay or >> switch in the K3? That is, by shorting the connection (closing the switch) >> I am operating a relay switch that stays closed as long as my switch (short) >> is closed. > > I rigged up a momentary push button switch to short out the > connection. That works great for me. I also have an electronic key > that I built that uses a transistor to 'close' the circuit. Either > way works. I don't know if internally it is a switch or relay or > what, but it is awfully quiet to be a relay. > >> Also, I would like to know if it is normal (do other guys do this?) to use >> multiple PTT switches wired in parallel probably using some parallel >> connection phono jack thingy. I have at least two switches (one a foot >> switch to use with a mic and the other a externally controlled switch for my >> Signalink USB interface). Maybe a third switch for a hand held switch for >> another mic that I might use at times. No probably not three, but at least >> two different switches. > > It would certainly be possible to wire up several switches in > parallel. If they are mechanical switches, then it won't hurt them at > all. If they are electronic switches, you might want to add in some > circuitry to protect from a short (depending on what kind of output > stage we are talking about). > > --Vernon N7OH > >> 73, phil, K7PEH >> >> ______________________________________________________________ >> 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
