WWII U.S. Army Air Forces RF-3/AP Aircraft Radio Direction Finder Loop Antenna Assembly

WWII U.S. Army Air Forces RF-3/AP Aircraft Radio Direction Finder Loop Antenna Assembly

Original WWII U.S. Army Air Forces RF-3/AP Radio Direction Finder (RDF) Loop Antenna Assembly operating on 28 VDC. Data plate is marked RF-3/AP with an 85-DAY-44 contract, indicating wartime production. This complete assembly retains its cylindrical loop antenna housing, drive motor, DC shunt, terminal block, mechanical drive linkage, and mounting hardware. Designed for airborne radio direction finding and navigation, the RF-3/AP was used to automatically rotate the loop antenna for bearing determination, making it a key component of WWII aircraft navigation systems. A substantial and impressive display piece for collectors of Signal Corps equipment, Army Air Forces electronics, or aircraft restoration projects. Original wartime finish with expected service wear and untested condition.