WWII-Era U.S. Army RF Signal Generator grinder Missing nameplate on oscillator

Missing nameplate on oscillator

JM - 090222 - 104925

The clip-on bulb cap

The dimensions of the top cubby are 18

WWII-Era U.S. Army RF Signal Generator grinder Missing nameplate on oscillatorc. 1940s; Freed Radio Corp. New York I 130 A RF signal generator manufactured for the Army during WWII. Signal generators are used for testing components, receivers and test systems in a wide variety of applications including cellular communications, WiFi, WiMAX, GPS, audio and video broadcasting, satellite communications, radar and electronic warfare. This particular model was used for testing and repairing electrical equipment while in the field.