• Country
• United States of America (USA)

• Manufacturer / Brand
• Radio Auto Distributors; (where?)

• Year
• 1925

• Category
• Car Radio, perhaps also + sound player/recorder

• Radiomuseum.org ID
• 52384

• Number of Tubes
• 3

• Valves / Tubes

• Main principle
• Special principle (see notes)

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

• Material
• Metal case

• from Radiomuseum.org
• Model: Airtone 3D - Radio Auto Distributors; where

• Shape
• Chassis only or for «building in»

• Notes
• Two dials (primary tuning control knobs)

• Price in first year of sale
• 60.00 $

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

• Author
• Model page created by Peter Rutishauser. See "Data change" for further contributors.

• Other Models

• Here you find 4 models, 0 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio Auto Distributors; (where?)