WWII U.S. Army Modulator Keying Unit MD-34/ARA-8 – 28 Volt

WWII U.S. Army Modulator Keying Unit MD-34/ARA-8 – 28 Volt w/ John Oster Shunt Motor

Original WWII-era Modulator Keying Unit MD-34/ARA-8, marked 28 volts, with attached John Oster Mfg. Co. shunt motor, type BT-2-S. Motor plate lists 28 V.D.C., 12,000 RPM, continuous duty. The main unit data plate shows 777-DAY-DE-SE and serial appears to be A1838.

This is a nice aircraft/radio electronics component, likely associated with wartime aviation communication or radar equipment. Good collector piece for WWII aircraft radio, Signal Corps/Army Air Forces electronics, restoration projects, or parts/display.

Condition: Original surplus condition with paint loss, scuffs, scratches, oxidation, and general age/storage wear. Motor and connectors are present. Untested and sold as collectible/display/restoration equipment.