1953 USAF AN/URM-23 Summation Bridge Operating Manual AN 16-30URM23-1 Radar

Original vintage U.S. Air Force technical handbook for the AN/URM-23 Summation Bridge, manufactured by Bruno–New York Industries Corporation.

The title page is marked AN 16-30URM23-1 and dated 1 July 1953, with a 15 February 1954 revision. Published under the authority of the Secretary of the Air Force and Chief of the Bureau of Aeronautics.

The manual is housed in a blue binder labeled for the AN/URM-23 series. The pages show period handwritten technical notes and normal age/use wear, adding to its character as an actual working technical reference.

A desirable early Cold War-era electronics/test-equipment manual for collectors of military communications, radar, USAF technical publications, and vintage electronic test equipment.

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