291 old or new type
Gulbransen Co.; Chicago
- Country
- United States of America (USA)
- Manufacturer / Brand
- Gulbransen Co.; Chicago
- Year
- 1929
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 43747
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 9
- Main principle
- TRF without regeneration; Screengrid 1926-1935
- Tuned circuits
- 4 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Alternating Current supply (AC) / 110 Volt
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
- Material
- Wooden case
- from Radiomuseum.org
- Model: 291 old or new type - Gulbransen Co.; Chicago
- Shape
- Console with any shape - in general
- Notes
- New type with dual volume control; push-pull af output stage.
- Price in first year of sale
- 139.00 $
- External source of data
- Ernst Erb
- Source of data
- The Radio Collector's Directory and Price Guide 1921 - 1965
- Circuit diagram reference
- Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
- Mentioned in
- Radio Collector`s Guide 1921-1932
- Other Models
-
Here you find 64 models, 10 with images and 31 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Gulbransen Co.; Chicago