• Country
• United States of America (USA)

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

• Year
• 1916 ?

• Category
• Radio module pre 1926 (not a part, not a key)

• Radiomuseum.org ID
• 119840

• Main principle
• RF-Circuit or wave trap (separate, can also be an antenna with amp.)

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Various materials

• from Radiomuseum.org
• Model: Loose Coupler 12 inch - Duck Co., J.J. and William B.;

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 12 x 5.75 x 6 inch / 305 x 146 x 152 mm

• Notes
• Primary coil provided with a slider, tapped secondary moveable coil.

• Source of data
• -- Collector info (Sammler)

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• 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