I've wired several K3, Kenwood and ICOM mics and Kenwood and K3 are very similar. I think you'll find that the mic and PTT are the same, with mic being on Pin 1 and 7, PTT on 2 and 8. Cable shield is usually tied to pin 8 as well.
...bill nr4c On Thu, 2 Jun 2011 06:04:55 -0700 (PDT), VK7JB wrote: > Hello Group, > > I'm rewiring an 8 pin mic connector FROM an Icom configuration TO a > K3 > pinout. > > Wiring the Mic + and PTT lines is straight forward. But how best to > wire > the PTT GND, Mic - and Cable shield connections is bothering me. > > I'd like to wire the Mic - and cable shield to avoid the risk of > "pin 1" > problems and RFI etc, but if I interpret the schematic and mic > pinout info > for the K3 correctly, front panel mic pins 7 & 8 are wired in common > with > the chassis. > > So, am I correct in understanding that on the K3, there's no way of > seprating Mic-, PTT GND and cable shield/chassis - ie they're all > bonded in > common? > > If this is correct, should I simply wire PTT GND to pin 7 and Mic- > and > cable shield to pin 8. (But they are all connected together in the > rig). > > In other words, is this wiring pinout the most appropriate? > > Pin 1 ----> Mic + > Pin 2 ----> PTT > Pin 7 ----> PTT GND > Pin 8 ----> Mic - and cable shield. > (pin 7 and 8 being bonded internally anyway) > > Thanks for any clarification. It's possible I'm over-thinking this! > :) > > 73, > John > VK7JB > > > > > > > > -- > View this message in context: > > http://elecraft.365791.n2.nabble.com/K3-8-pin-mic-wiring-to-avoid-pin-1-problems-how-best-to-tp6431057p6431057.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > 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 ______________________________________________________________ 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
