Detector and Three-Stage Amplifier
Proudfoot, G.M.; Chicago, IL
- Country
- United States of America (USA)
- Manufacturer / Brand
- Proudfoot, G.M.; Chicago, IL
- Year
- 1921
- Category
- Radio module pre 1926 (not a part, not a key)
- Radiomuseum.org ID
- 196057
- Number of Tubes
- 4
- Main principle
- Detector with Vacuum Tube (Valve), no tuner; 3 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 and Three-Stage Amplifier - Proudfoot, G.M.; Chicago, IL
- Shape
- Tablemodel, Box - most often with Lid (NOT slant panel).
- Notes
- The G. M. Proudfoot Detector and Three-Stage Audio Amplifier was advertised in the November 1921 Radio News magazine.
- Price in first year of sale
- 65.00 $
- Literature/Schematics (1)
- November 1921 Radio News advertisement page 451
- Author
- Model page created by Alan Larsen. See "Data change" for further contributors.
- Other Models
-
Here you find 12 models, 7 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Proudfoot, G.M.; Chicago, IL