Loose Coupled Tuning Transformer

Proudfoot, G.M.; Chicago, IL

  • Year
  • 1920
  • Category
  • Radio module pre 1926 (not a part, not a key)
  • Radiomuseum.org ID
  • 196780

 Technical Specifications

  • Main principle
  • Tuner pre 1926 (not a wave trap)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Loose Coupled Tuning Transformer - Proudfoot, G.M.; Chicago, IL
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 18 x 0 x 0 inch / 457 x 0 x 0 mm
  • Notes
  • G. M. Proudfoot advertised this loose coupler in a November 1920 Radio News advertisement. This Tuning Transformer had a range of 3500 meters.
  • Price in first year of sale
  • 10.00 $
  • Literature/Schematics (1)
  • November 1920 Radio News advertisement page 314
  • Author
  • Model page created by Alan Larsen. See "Data change" for further contributors.

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