[Milsurplus] Tubes used in URC-4 ??

[Mike Morrow]

Hue wrote:

>  ... tell me tubes used in the URC-4 survival radio?


V1, V2, V5, V6 are USAF 6050 triodes
V3, V4 are MIL 5851 tetrodes
V7 is a 2E32 tetrode
V8 is a 3Q4 tetrode

T.O. 12R2-2URC4-2 says that early models used CK5676 tubes for V1, 2, 5, and
6 which should be replaced with the USAF 6050.

There should be a circuit shown on the inside of the back cover plate, but
of course it doesn't state the tube type for some reason.

73,
Mike / KK5F