i have borrowed a HEIL PR-10 microphone it has a lead on it that goes to an 8 pin round microphone plug i also have an 8 pin round to 8 pin modular rj45 ( for an icom 7100 radio ) and a ptt switch also ,

when plugged in ( all correctly ) there is no ptt on the radio when the switch is pressed
after testing the switch is fine the wiring of the microphone plug is the fault ,
i dont unfortunately know what radio the mic was wire for so the most info i can give is pin 2 and pin 8 are currently the ptt and i believe pin 2 and pin 3 are the ptt on the 7100 what i need is a wiring diagram or someone who knows wiring of microphones better that me who can point me in the right direction please ,

im only borrowing this microphone for tests etc before i fully invest in a similar style mic

cheers in advance


ps i can take an post pics of the plug , wires , leads etc on request cheers

Pins 2 & 8 for PTT is Kenwood wiring. 1 is audio and 7 audio ground.

However, how do you know what the wiring is in the adaptor doodab?

the 8 pin to rj45 is icom i believe

so if the microphone is wired kenwood it would explain why it does nothing lol just need to work out the wiring from kenwood to icom ..
and so there is the headache and pulling hair time lol its been over 12 years since i rewired any mic

cheers for the pin info in working out its wired kenwood