Vintage US Military TS-323/UR Heterodyne Frequency Meter Crystal Calibrator Manual

Original vintage U.S. military technical manual for the Model TS-323/UR Heterodyne Frequency Meter and Crystal Calibrator.

Manual number AN 08-35TS323-2, published under authority of the Secretary of the Air Force and Chief of the Bureau of Aeronautics. The title page notes that the publication’s original “Restricted” classification was changed to “Unclassified.”

This is a specialized maintenance handbook for the TS-323/UR electronic test set, used for frequency measurement and calibration of military radio/electronic equipment. The manual is housed in a period-style blue binder with a handwritten identification label.

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