• Country
• United States of America (USA)

• Manufacturer / Brand
• Robertson Clock & Instrument Co.; Detroit, MI

• Year
• 1922

• Category
• Amateur Equipment (Other, but not Key)

• Radiomuseum.org ID
• 257962

• Wave bands
• - without

• Power type and voltage
• AC/DC-set

• Loudspeaker
• - - No sound reproduction output.

• Material
• Various materials

• from Radiomuseum.org
• Model: Robertson-Detroit Chopper - Robertson Clock & Instrument

• Shape
• Tablemodel, with any shape - general.

• Price in first year of sale
• 35.00 $

• Literature/Schematics (1)
• QST (October 1922, QST magazine advertisement on page 114)

• Author
• Model page created by Alan Larsen. See "Data change" for further contributors.

• Other Models

• Here you find 1 models, 1 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Robertson Clock & Instrument Co.; Detroit, MI