• Country
• United States of America (USA)

• Manufacturer / Brand
• Western Union International, Inc.; New York

• Year
• 1928 ??

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

• Radiomuseum.org ID
• 190211

• Wave bands
• - without

• Power type and voltage
• Storage and/or dry batteries

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Morse Relay 4B 150 Ohm - Western Union International,

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 204 x 95 x 122 mm / 8 x 3.7 x 4.8 inch

• Notes

• 150 ohm, 270 mH

  Requires about 40 mA to switch

• Net weight (2.2 lb = 1 kg)
• 1.1 kg / 2 lb 6.8 oz (2.423 lb)

• Author
• Model page created by Rudolf Osterkamp. See "Data change" for further contributors.

• Other Models

• Here you find 1 models, 1 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Western Union International, Inc.; New York