TM 11-2602 Frequency Standard TS-65/FMQ-1 Technical Manual (March 1944)

Original World War II War Department Technical Manual TM 11-2602 covering the Frequency Standard TS-65/FMQ-1, dated March 31, 1944. The TS-65/FMQ-1 was a precision frequency calibration and reference instrument used by Signal Corps technicians to test, align, and maintain military radio transmitters and receivers. Accurate frequency standards were critical to wartime communications, navigation, radar, and electronic warfare systems. This manual contains operating instructions, maintenance procedures, calibration information, and technical specifications for the equipment. An excellent reference manual for collectors of Signal Corps electronics, radio test equipment, and WWII military communications technology.

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