• Year
  • 1924 ?
  • Category
  • Radio module pre 1926 (not a part, not a key)
  • Radiomuseum.org ID
  • 276977

 Technical Specifications

  • Main principle
  • RF-Circuit or wave trap (separate, can also be an antenna with amp.)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Filter 20-A - Western Electric Company Inc.;
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 14 x 13 x 7.5 inch / 356 x 330 x 191 mm
  • Notes
  • Western Electric 20-A Filter Used with the 4-D Receiver. 
    Western Electric broadcast station catalog illustrating the 20-A Filter states: " 20-A Filter is designed to overcome any receiving difficulties arising from proximity to the transmitting antenna."

  • Net weight (2.2 lb = 1 kg)
  • 17 lb (17 lb 0 oz) / 7.718 kg
  • Author
  • Model page created by Lindsay Shepherd. See "Data change" for further contributors.

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