1955 Preliminary Instruction Book for Radar Test Set AN/UPM-66 – Motorola Defense Division

Original U.S. military Preliminary Instruction Book for the AN/UPM-66 Radar Test Set, dated September 1, 1955, with included May 15, 1957 addenda sheet. Manufactured by Motorola Incorporated, National Defense Division, under Air Force contract for the Laboratory for Electronics. The AN/UPM-66 was a specialized radar maintenance and calibration instrument used for testing, troubleshooting, and servicing airborne and ground-based radar systems during the early Cold War era. An excellent technical reference for collectors of military radar equipment, electronics test gear, and post-WWII aviation technology.

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