• Country
• United States of America (USA)

• Manufacturer / Brand
• Winkler, Frederick, Jr.; New York City, New York

• Year
• 1922

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

• Radiomuseum.org ID
• 197174

• Number of Tubes
• 3

• Valves / Tubes
• UV200 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
• Wooden case

• from Radiomuseum.org
• Model: The Winkler Detector & 2-Stage Amplifier Type 4A - Winkler, Frederick, Jr.; New

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

• Notes
• The Winkler Type 4A Detector and 2-Stage Audio Amplifier was the matching detector/Amplifier for the Winkler Receiver.

• Price in first year of sale
• 60.00 $

• Mentioned in
• Radio News (July 1922 page 165)

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

• Other Models

• Here you find 5 models, 5 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Winkler, Frederick, Jr.; New York City, New York