----Original Message-----

From: <releazer@earthlink.net></releazer@earthlink.net>

Sent: Jul 12, 2022 6:07 PM

> 1. Where did the USN use the SCR-522?

It's already been pointed out that the SCR-624-A or -B, the AC-powered version of the SCR-522-A, was found on US submarines, and no doubt other vessels.

I have photos of a USN PBY cockpit with two BC-602-* control boxes in the center cockpit area for its two SCR-522-A sets.

No doubt the set showed up elsewhere as well.

> 2. ...I presume, squadron hacks, and aircraft in storage still had

> SCR-522, but the F-51's refurbed and rushed over to Korea were

> fitted with ARC-3 and BC-453.

Many such aircraft used some version of the BC-1206-* instead of the heavier, more-expensive, needlessly complex BC-453-B.

> 3. Aside from the one off example of the X-1A, did the USAF make

> any use of the VHF ARC-5?

Not that I've personally seen.  However, in the 1950s USAF MARS had a lot of real AN/ARC-5 units in their equipment issue program.  I don't know from whence that stuff came.  My dad was W5WRR/AF5WRR.  He was issued some of that gear, which gave me an interest in Navy/Marine Corps MARS and military surplus in general more than 55 years ago.