• Country
• Great Britain (UK)

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

• Year
• 1940 ??

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

• Radiomuseum.org ID
• 158773

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Bakelite case

• from Radiomuseum.org
• Model: "Bathtub" Morse key Ref. N°. 10A/7741 - MILITARY U.K. different makers

• Shape
• Miscellaneous shapes - described under notes.

• Dimensions (WHD)
• 40 x 70 x 135 mm / 1.6 x 2.8 x 5.3 inch

• Notes
• R.A.F "Bathtub" Flameproof Key, Ref.N° 10A/7741.
  This key was the standard key used in British bombers throughout WW-II. It is totally enclosed, making it suitable for use in explosiv environments. The mechanism is attached to the top of the key and operates "upside down". The metal clip keeps the cover closed but it can also be slipped over the skirt of the knob to hold it down and thus send out a continuous signal.

• Net weight (2.2 lb = 1 kg)
• 0.240 kg / 0 lb 8.5 oz (0.529 lb)

• Mentioned in
• Perera's "Telegraph Collectors Guide"

• Author
• Model page created by Bernd P. Kieck. See "Data change" for further contributors.

• Other Models

• Here you find 151 models, 117 with images and 48 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from MILITARY U.K. (different makers for same model)