• Country
• United States of America (USA)

• Manufacturer / Brand
• Robertson-Davis Co., Chicago

• Year
• 1929/1930

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 207457

• Number of Tubes
• 11

• Valves / Tubes
• 28 28 22 22 22 28 28 UX210 UX210 UX281 UX281

• Main principle
• Superheterodyne (common); Screengrid 1926-1935

• Wave bands
• Broadcast and Short Wave (SW).

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: R-D 22 Super-Six [Automatic Receiver] - Robertson-Davis Co., Chicago

• Shape
• Console, Lowboy (legs < 50 %).

• Notes
• 1930 Robertson-Davis R-D 22 Super-Six Automatic Push Button Receiver This set featured 8 push button station pre-sets.

• Literature/Schematics (1)
• March 1929 Citizens Radio Callbook advertisement page 43

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

• Other Models

• Here you find 8 models, 5 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Robertson-Davis Co., Chicago