[Milsurplus] DU-1 DF Loop

[David Stinson]

..... Interestingly there's a
big, yellow 'M' on the GF transmitter next to the RU. Hmmm....W.E.
gear from the ARC Morgue?

The GF-3 set was indeed built by A.R.C.
Western Electric didn't get into the GF/RU game until 
GF-11 and GF-12.

73 Dave S.