• Country
• United States of America (USA)

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

• Year
• 1936–1965 ??

• Category
• Morse-Equipment & TTY, RTTY, TDD etc.

• Radiomuseum.org ID
• 74419

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Bakelite case

• from Radiomuseum.org
• Model: General Purpose Key J-47 - MILITARY U.S. different makers

• Shape
• Miscellaneous shapes - described under notes.

• Dimensions (WHD)
• 70 x 30 x 135 mm / 2.8 x 1.2 x 5.3 inch

• Notes
• General purpose morse-key J-37 with bakelite ground-plate. Widly used in the US-services.
  Many different manufacturers in the US, also one confirmed manufacturer in Germany (see J-47 under FTW ).

• Net weight (2.2 lb = 1 kg)
• 0.2 kg / 0 lb 7 oz (0.441 lb)

• Author
• Model page created by a member from D. 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)