CR3 Grebe Special Type 1 (wooden variometers)

Grebe, A.H. & Co.; Richmond Hill (NY)

  • Year
  • 1920
  • Category
  • Radio module pre 1926 (not a part, not a key)
  • Radiomuseum.org ID
  • 43512
    • Brand: Synchrophase

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

 Technical Specifications

  • Main principle
  • Tuner pre 1926 (not a wave trap)
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: CR3 Grebe Special [Type 1 ] - Grebe, A.H. & Co.; Richmond
  • Shape
  • Tablemodel, Box - most often with Lid (NOT slant panel).
  • Notes
  • The Grebe CR-3 (Grebe Special) Regenerative receiver covered 150-1000 Meters. This was the first version Type 1 of the CR-3 and used wooden variometers. The Type 2 CR-3 had bakelite variometers with vernier tuning.
  • Price in first year of sale
  • 60.00 $
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
  • Literature/Schematics (4)
  • March, 1920 A. H. Grebe & Co. Bulletin R-121

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