Detector/2-Stage Audio Amplifier
Columbia Radio Co.; Youngstown Ohio
- Country
- United States of America (USA)
- Manufacturer / Brand
- Columbia Radio Co.; Youngstown Ohio
- Year
- 1921
- Category
- Radio module pre 1926 (not a part, not a key)
- Radiomuseum.org ID
- 194237
-
- Brand: Sentinel
- Number of Tubes
- 3
- 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: Detector/2-Stage Audio Amplifier - Columbia Radio Co.; Youngstown
- Shape
- Tablemodel, Box - most often with Lid (NOT slant panel).
- Dimensions (WHD)
- 16 x 6 x 7.5 inch / 406 x 152 x 191 mm
- Notes
- Columbia Radio Company Detector and Two-Step Audio Amplifier was first advertised in the November 1921 QST.
- Price in first year of sale
- 55.00 $
- Literature/Schematics (1)
- November 1921 QST page 119
- Author
- Model page created by Alan Larsen. See "Data change" for further contributors.
- Other Models
-
Here you find 9 models, 4 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Columbia Radio Co.; Youngstown Ohio