1946 USAAF US Navy Radar Beacon AN/APN-19 Maintenance Manual CO-AN 16-30APN19-3

Original vintage Radar Beacon AN/APN-19 Handbook – Maintenance Instructions, publication number CO-AN 16-30APN19-3, dated 12 April 1946.

Published under the authority of the Secretary of the Air Force and Chief of the Bureau of Aeronautics, this technical handbook covers the AN/APN-19 airborne radar beacon system. The contents shown include:

• General description and equipment supplied
• Installation and adjustment
• Bench testing and inspection
• Flight operation
• Theory of operation and functional analysis
• Radar Receiver R-149/APN-19
• Radar Transmitter T-128/APN-19
• Control boxes, antenna, filter and mounting equipment
• Interconnecting cords and system installation

The manual is especially interesting because the cover retains the original “CONFIDENTIAL” classification markings along with a handwritten classification-cancelled notation dated August 1950.

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