[R-390] Look for poser connector.

[DW Holtman]

Hello,

I recently acquired a  CU-1388/Flr-9 Multicoupler to be used on R-390s. 
The problem is there is no power plug. I have one rigged up for now , 
but would like get the correct plug. It is a military three pin screw on 
connector. Looking at the Digi Key and Amphenol  web page, it looks like 
it is a series 97-3107A (I think) which it looks like is obsolete. I 
need a female three pin screw on connector. The female end on the 
coupler is 7/8 inches outer dia, I guess the plug would be around an 
inch. I think it was a common connector back in the day. Does anyone 
have any ideas where I might locate one? I can send pictures.

I'm also trying to locate a manual for the same, any help would be 
great. I have already checked the usual sources on the internet for the 
manual.

Best,
DW Holtman
WB7SSN