TM 11-1242 / TO 16-35TS268-15 – Crystal Rectifier Test Set TS-268(*)/U Technical Manual

Original Department of the Army and Department of the Air Force technical manual TM 11-1242 / TO 16-35TS268-15 covering the Crystal Rectifier Test Set TS-268(*)/U, dated September 1952. Includes Change No. 1 dated December 17, 1954. This specialized electronic test instrument was designed for testing and evaluating crystal rectifiers used in radar, microwave, and communications equipment during the early Cold War era. The manual contains operating instructions, calibration procedures, maintenance information, technical specifications, and update sheets reflecting later equipment modifications. Features original military library markings and period technical service history.

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