US Air Force BC-442-A Antenna Relay for command set

A US Air Force BC-442-A Antenna Relay Unit and mounting plate for the ARC-5 command set radios. The complete installation consisted of three receivers and two transmitters and associated equipment. On the B-17 the command set was placed on the radio operator's bulkhead and remotely operated by the pilot. The Antenna Relay Unit is in good complete condition.