• Country
• United States of America (USA)

• Manufacturer / Brand
• Betts & Betts Corp.; New York City, New York

• Year
• 1922

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

• Radiomuseum.org ID
• 196887

• • Brand: Transcontinental

• Number of Tubes
• 3

• Valves / Tubes
• UV200 or UV201 UV201 UV201

• Main principle
• Detector with Vacuum Tube (Valve), no tuner; 2 AF stage(s)

• Wave bands
• - without

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

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Bakelite, TUBES VISIBLE

• from Radiomuseum.org
• Model: Visible Type D2A Detector/2-Stage Audio Amplifier - Betts & Betts Corp.; New York

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 5 x 0 x 10 inch / 127 x 0 x 254 mm

• Notes
• Betts & Betts Corporation B & B Visible Type D2A breadboard style Detector and Two-Stage Audio Amplifier.

• Price in first year of sale
• 38.50 $

• Literature/Schematics (1)
• Information taken from example of this model

• Literature/Schematics (3)
• QST (December 1922 QST page 141)

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

• Other Models

• Here you find 4 models, 4 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Betts & Betts Corp.; New York City, New York