TM 11-1157 Beacon Transmitter-Receiver AN/TPN-2 Technical Manual – Confidential with Original 1945 Addenda

Original World War II War Department Technical Manual TM 11-1157 covering the Beacon Transmitter-Receiver AN/TPN-2, dated December 27, 1944. This highly specialized Signal Corps equipment was used as a radio beacon and navigation aid for military aviation and communications operations. The manual retains its original Confidential classification markings, later officially downgraded to Restricted, and includes the original January 16, 1945 Addenda sheet with wartime updates and corrections. Contains technical information, operating procedures, maintenance instructions, and equipment modifications issued during active wartime service. An outstanding collector piece combining classified status, navigation equipment, and original supplemental documentation.

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