Kenwood TK3101 FreeTalk headset pin out

[Texas42]

Does anyone have the pinout for the 2.5mm and 3.5mm jacks on the Kenwood TK3101?

I am trying to add a isolation transformers to the cable that I have for my Starcom 1. I built a battery back that I can power from the bike, but when I use it I introduce a ground loop. When I don't power it from the bike everything is fine.

[VitesseLT]

About as close as I can get ...

According to online selling resources, the TK-3101 and UBZ-LF/LH series use the same accessory pinouts; I don't have a 3101 to physically/electrically verify, however in the brochure for both models, the accessory connectors on headsets and speaker mics do in fact appear the same. From there, the only leap of faith is that all pins are wired the same.

So, I have a SMC-34 speaker mic for my UBZ-LF; here's its schematic.

Hope this helps.

[Texas42]

Thank you this is great information, I'll try to combine it with what I have been able to figure out so far.