Curious about this

Certainly interesting how they reversed the connectors. I bet you're right about the factory effing up and "adding" the extension after. And that lock...WTH - never seen one of those!!!!

That's a great picture of the radio setup. I sure wish I would have taken more when I was first started out in the Air Force. I worked primarily Air Traffic Control radio, but also worked on the KWM-2A and some SATCOM and SLFCS (although they wouldn't allow pics of those!!). Now...this was in the mid 80's...