- Country
- United States of America (USA)
- Manufacturer / Brand
- Columbia Phonograph, American / Volta Graphophone Company; USA
- Year
- 1930 ??
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 45638
-
- alternative name: American Graphophone || Columbia Recording
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 12
- Main principle
- TRF without regeneration; Screengrid 1926-1935
- Tuned circuits
- 4 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Details
- Record Player (perh.Changer)
- Power type and voltage
- Alternating Current supply (AC) / 115 Volt
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
- from Radiomuseum.org
- Model: 980 - Columbia Phonograph, American
- Notes
- Push-pull af output stage; Radio & Phono combination.
- External source of data
- Ernst Erb
- Circuit diagram reference
- Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
- Other Models
-
Here you find 114 models, 80 with images and 34 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Columbia Phonograph, American / Volta Graphophone Company; USA