WWII U.S. Navy RCA ASB-4 Radar Rectifier Power Unit CRV-20ABL – Appears NOS with Original Box

WWII U.S. Navy RCA ASB-4 Radar Rectifier Power Unit CRV-20ABL – Appears NOS with Original Box

Original RCA CRV-20ABL rectifier power unit for the U.S. Navy ASB-4 airborne radar system, bearing contract number NXs-7621 and serial number 1580. Includes its original labeled cardboard box, marked MI-17021, with matching serial number.

Appears to be new old stock based on its preserved condition and matching packaging, although unused status cannot be confirmed. Features a black wrinkle-finish metal housing, ventilation louvers, mounting feet, and threaded connectors labeled Antenna Unit, Control Unit, Transmitter, Receiver, and Indicator.

The housing retains an attractive finish with minor storage wear, scattered scratches, dust, and light oxidation around fittings. The original box shows tears, creasing, edge wear, and added blue tape. An excellent addition to a WWII naval aviation or radar collection. Untested, with electrical operation and internal completeness unverified.