• Year
  • 1928
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 35681
    • alternative name: American Graphophone || Columbia Recording

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 6
  • Main principle
  • TRF without regeneration
  • Tuned circuits
  • 4 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Direct Current supply (DC) / 110 Volt
  • Loudspeaker
  • -Loudspeaker incorporated, but system not known.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: C-7 - Columbia Phonograph, American
  • Shape
  • Console, Highboy (legs > 50 %).
  • Dimensions (WHD)
  • 22 x 46 x 16 inch / 559 x 1168 x 406 mm
  • Notes
  • One dial (primary tuning control knob) . Stretcher base.
  • Price in first year of sale
  • 200.00 $
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

 Collections | Museums | Literature

 Forum