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
