General Purpose Key J-37
- United States of America (USA)
- Manufacturer / Brand
- MILITARY U.S. (different makers for same model)
- 1935–1970 ??
- Morse-Equipment & TTY, RTTY, TDD etc.
- Radiomuseum.org ID
- Wave bands
- - without
- Power type and voltage
- No Power needed
- - - No sound reproduction output.
- Metal case
- from Radiomuseum.org
- Model: General Purpose Key J-37 - MILITARY U.S. different makers
- Tablemodel, with any shape - general.
- Dimensions (WHD)
- 73 x 25 x 130 mm / 2.9 x 1 x 5.1 inch
- General Purpose Key J-37 for the US-millitary services. This Phenolic oval based key was very widely used in many different applications. It was made by at least 5 manufactures and mounted on several different bases.
Also for using with a knee-clip, then it is called J-45.
- Net weight (2.2 lb = 1 kg)
- 0.1 kg / 0 lb 3.5 oz (0.22 lb)
- Mentioned in
- Perera's "Telegraph Collectors Guide"
- Model page created by a member from D. See "Data change" for further contributors.
- Other Models
Here you find 362 models, 317 with images and 173 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)