• Country
• United States of America (USA)

• Manufacturer / Brand
• Wireless Improvement Co.; New York City, New York

• Year
• 1920

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

• Radiomuseum.org ID
• 203934

• Number of Tubes
• 1

• Valves / Tubes
• UV200

• Main principle
• Detector with Vacuum Tube (Valve), no tuner

• Wave bands
• - without

• Power type and voltage
• Direct Current supply (DC) / 110 Volt

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: Audion Control Box WI-129A - Wireless Improvement Co.; New

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Notes
• The Wireless Improvement Company WI-129A Audion Control Box. This unit can use either a 110V DC power source or the standard battery setup. The WI-129A included a 110V filter system to smooth the incoming voltage.

• Price in first year of sale
• 75.00 $

• Literature/Schematics (1)
• June 1920 The Wireless Age magazine page 6

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

• Other Models

• Here you find 18 models, 15 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Wireless Improvement Co.; New York City, New York