The Clansman Radio System
The Initiate BoxThe initiate box is connected between an RT351 or RT352 and an ARFAT/TUAAM antenna tuning system and is connected to one of the headset sockets on the RT351 (at the time of writing I am not certain which one, although I would expect it is socket 2 if the initiate box is usable with the RT351M on which socket 1 is dedicated to the BID crypto device. )
The connections are:
I'll add a diagram when I get a chance.
The Initiate box has a 2A fuse, a manual tune button, and a switch marked "N/S" of which I do not presently know the function.