5985-00-642-8712 (C1020)
NSN 5985-00-642-8712 (NIIN 00-642-8712) is an antenna coupler in Federal Supply Class 5985, Antennas, Waveguides, And Related Equipment — a coupler which provides a means of transfer of electrical energy between an antenna and other components. Manufacturer part number C1020 (Cae USA Inc., CAGE 1PQF4); also referenced as CU226SR (Joint Electronics Type Designation).
Key specs: 20 to 50 MHz radio frequency; 20 W nominal power; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required); export Schedule B 8529.10.9000.