• Country
• United States of America (USA)

• Manufacturer / Brand
• MILITARY U.S. (different makers for same model)

• Year
• 1955 ?

• Category
• Military Equipment (not Re, Tr or RXT)

• Radiomuseum.org ID
• 120816

• Main principle
• RF Converter/Adapter (not voltage converter)

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 115 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Frequency Shift Converter URA-8A [CV-89A] - MILITARY U.S. different makers

• Shape
• Boatanchor (heavy military or commercial set >20 kg).

• Notes
• Radioteletype / FSK converter used to convert FSK signals to impulses to control a teletypewriter.
  Variable shift around 850 Hz, internal CRT scope to control receiver tuning.
  By means of the CM-22A comparator, the better quality signal coming from one of two CV-89A could automatically been switched to the connected teletypewriter.
  Built for US Navy, also used by Royal Navy for maritime traffic.
  Different contractors, e.g. Hoffman Laboratories Inc., Los Angeles, CA.

• Source of data
• -- Original-techn. papers.

• Author
• Model page created by Martin Bösch. See "Data change" for further contributors.

• Other Models

• Here you find 393 models, 345 with images and 210 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from MILITARY U.S. (different makers for same model)