- Country
- United States of America (USA)
- Manufacturer / Brand
- National Dobro Co.; San Louis
- Year
- 1939
- Category
- Audio Amplifier or -mixer
- Radiomuseum.org ID
- 184374
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 4
- Main principle
- Audio-Amplification
- Wave bands
- - without
- Power type and voltage
- Storage and/or dry batteries / 1,5 & 90 Volt
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
- Power out
- 0.8 W (unknown quality)
- from Radiomuseum.org
- Model: 31 - National Dobro Co.; San Louis
- Notes
- Musical Instrument Amplifier.
- Author
- Model page created by Hannes Gerber. See "Data change" for further contributors.
- Other Models
-
Here you find 13 models, 2 with images and 12 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from National Dobro Co.; San Louis