• Country
• United States of America (USA)

• Manufacturer / Brand
• Duck Co., J.J. and William B.; Toledo, OH

• Year
• 1923

• Category
• RF (Radio Frequency-) Amplifier

• Radiomuseum.org ID
• 37845

• Number of Tubes
• 3

• Valves / Tubes

• Main principle
• Radio Frequency Amplification only

• Power type and voltage
• Storage and/or dry batteries

• from Radiomuseum.org
• Model: CQA - Duck Co., J.J. and William B.;

• Shape
• Tablemodel, with any shape - general.

• Price in first year of sale
• 49.00 $

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• Other Models

• Here you find 57 models, 34 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Duck Co., J.J. and William B.; Toledo, OH