The Challenger Eyeglass Hearing Aid
Zenith Radio Corp.; Chicago, IL
- Country
- United States of America (USA)
- Manufacturer / Brand
- Zenith Radio Corp.; Chicago, IL
- Year
- 1958
- Category
- Medical Technology
- Radiomuseum.org ID
- 73961
-
- alternative name: Chicago Radio Lab
Image copy from Ebay seller johnseller
- Number of Transistors
- 3
- Semiconductors
- Main principle
- Audio-Amplification
- Wave bands
- - without
- Details
- Hearing aid
- Power type and voltage
- Dry Batteries
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
- Material
- Various materials
- from Radiomuseum.org
- Model: The Challenger Eyeglass Hearing Aid - Zenith Radio Corp.; Chicago,
- Shape
- Very small Portable or Pocket-Set (Handheld) < 8 inch.
- Notes
- Eyeglass Hearing Aid (Hörbrille);
- Mentioned in
- Zenith Transistor Radios
- Author
- Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.
- Other Models
-
Here you find 4491 models, 4096 with images and 3595 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Zenith Radio Corp.; Chicago, IL