QA Detector and Amplifier

Duck Co., J.J. and William B.; Toledo, OH

  • Year
  • 1921
  • Category
  • Radio module post 1925 (not a part, not a key)
  • Radiomuseum.org ID
  • 84366

 Technical Specifications

  • Number of Tubes
  • 3
  • Main principle
  • Detector with Vacuum Tube (Valve), no tuner; 2 AF stage(s)
  • Wave bands
  • - without
  • Power type and voltage
  • Storage and/or dry batteries
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: QA Detector and Amplifier - Duck Co., J.J. and William B.;
  • Shape
  • Miscellaneous shapes - described under notes.
  • Notes
  • Panel Set. Wave band change by plug-in honeycomb coils.
  • Price in first year of sale
  • 69.00 $
  • Literature/Schematics (1)
  • William B.Duck Catalog No.16 (1921), p.50

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