6930-01-042-1489 (GA811BT1)
NSN 6930-01-042-1489 (NIIN 01-042-1489) is an operation amplifier in Federal Supply Class 6930, Operation Training Devices. Manufacturer part number GA811BT1 (Northrop Grumman Systems Corporation, CAGE 26512); also referenced as 1790 (Modular Devices Inc); MM20 (Melcor Electronics Corp).
NIIN assigned June 1977; unit of issue EA (each), $1,691.69 gov standard price.