• Country
• United States of America (USA)

• Manufacturer / Brand
• Davis Industries Inc.; Kokomo, IN and Chicago, IL

• Year
• 1929 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 360325

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 0

• Valves / Tubes
• 226 226 227 226 112A 112A 80

• Main principle
• TRF without regeneration; 2 AF stage(s); Screengrid 1926-1935

• Tuned circuits
• 4 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 110-120 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 10 inch = 25.4 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: Duo-Dynamic? - Davis Industries Inc.; Kokomo,

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

• Dimensions (WHD)
• 35 x 61 x 19 inch / 889 x 1549 x 483 mm

• Notes

• Chassis is Stewart Warner Chicago Series B 811 with Davis stickers on it.

  Radio has two speakers. I believe this to be their duo-dynamic radio because of that. Second speaker is a 9.5 inch Quam reed-type speaker, possibly used as a  midrange.  There is a switch to turn it on or off.  The main speaker is the Davis Industries Dynamic speaker.

• Mentioned in
• -- Original prospect or advert (Kokomo Tribune Friday, October 18, 1929)

• Author
• Model page created by Stephen Ewbank. See "Data change" for further contributors.

• Other Models

• Here you find 2 models, 2 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Davis Industries Inc.; Kokomo, IN and Chicago, IL