Batboard

Hi all, I have got one of thouse "Adapter for Motorola HT-1000 MTS-2000 MTX-838 " and I was wondering if there is any pinout available for them, mine has a funny Jack connector that has a tread and I am not sure if it will take a 3 or 4 pins Jack and which way the mic and spk are wired in. Any help will be apreciated.

I takes the 3.5 mm THREADED plug which has three connections. Mic, spkr and ground. The same pinout is used in the Visar, AKA Casino radios.
There are numerous accys that have the 3.5 mm threaded plug.