WWII-era U.S. Navy AN/APX-6 Transponder, marked RT-82/APX-6

Original WWII-era U.S. Navy AN/APX-6 Transponder, marked RT-82/APX-6. This is an aircraft IFF/radar identification transponder unit with original frequency calibration chart, receiver tuning, crystal current, destruct controls, trans/receiver/LO frequency controls, antenna connection, control/power sockets, fuses, and internal wiring/components visible. Data plate shows RT-82/APX-6, 115V / 320–1760~ & 28VDC, contract NOas-51-064. Shows age wear, paint loss, scuffs, and storage wear. Untested and sold as vintage military aircraft radar/electronics equipment for display, parts, restoration, or collector use.