Specific military systems include:
ARC-5 and SCR-274N Transmitters and Receivers
LM and BC-221 Frequency Meters
BC-610
BC-348
R-388 receivers
R-390 and R-390A receivers, including the R-391, R-392, and
R-389.
51S-1 Collins receivers
Ham Radio Gear, such as:
Hallicrafters S-38's, SX-99 and more
Heathkit AT-1, AC-1, DX-100 and more
Home brew transmitters, receivers and more (e,g., power supplies)
Test Equipment and related
PHOTO:
On the right in the photo is a BC-610 Transmitter with a speech pre-amp on top. The receiver is a Hallicrafters SX-43 with a Hallicrafters speaker beside it. As a kid interested in radio in the early 1950's, this photo would be looked at many, many times in envy and awe. I'd imagine this ham to be located on a remote island in the Pacific, or in a rare country in Africa such as French Equitorial Africa or Libya, chasing DX radio stations (maybe in a DX contest or instead just having a daily QSO with a ham friend located somewhere equally exotic) while puffing on his Chesterfield or Lucky Strike cigarette. He's probably having a lot of fun, but his turban hatted, native friend looks on with apparent skepticism.