There's an interesting photo at http://public.fotki.com/FRUPAC/misc-bw-pics/misc0050.html Guam Navy Comm Station, late 1960's Here's my guess - bottom row AN/UGC-25 (M28RO compact) middle row TT-176/UG (M28KSR skintight) top row TT-187/UG (M28TD) plus ??? some kind of reperf??? small thing hanging on wall ???? switch??? cheers, Nick KD4CPL