Collins R278B/GR control tower aircraft radio.

A rare opertunity to buy an R278B/GR control tower UHF military radio.
Uses valves, and crystals to produce hundreds of channels in the UHF military
aircraft band frequencies are selected using the thumb-wheel switches, up to 11
channels at a time, selected using the front panel channel switch.
This unit is 19inch rack mountable. and is 8U high (about 11 inches).

A piece of 1950's / 1960's technology. A good example of the high-tech
end of the professional / commercial radio gear available at the time.
sold here in "as-is" condition. Nice and clean as you can see from the pictures
below. the circuit/wiring diagrams are printed on aluminium sheets attached to the sides.

Packed weight is far too heavy to post! You'll need to collect the radio.