1940s General Electric Transmitter Tuning Unit TU 5B 1500-3000 KC. Boxed New Old Stock

This amazing part of a USA WW2 aircraft radio is a 1940s General Electric Transmitter Tuning Unit TU 5B 1500-3000 KC. Boxed New Old Stock, it is in superb condition with negligible storage marks. It has not been tested, and is being sold as a collectible for display only.

The box is intact but grubby and creased. The unit was supplied as Military Surplus in the 1950s by Clydesdale Supply Co., Glasgow, for the princely sum of 22/6d (~ £46 in today's money): see attached adverts.

Summary:

• GEC Transmitter Tuning Unit TU-5B
• US Army Signal Corps
• Case number: CS-48
• Frequency range 1500-3000kc
• Serial number 57704

The tuning unit was made for use with the BC-375 or BC-191 Radio Transmitters (not included), which were used in the following types of iconic WW2 aircraft; B-17 (Flying Fortress), B-24 (Liberator), B-25 (Mitchell) and B-26.

Image of a BC-375E Radio Transmitter with a tuning unit in the bottom left hand corner:

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