Tom Thumb Screen Grid 4
Automatic Radio Mfg. Co.; Boston (MA)
- Country
- United States of America (USA)
- Manufacturer / Brand
- Automatic Radio Mfg. Co.; Boston (MA)
- Year
- 1929
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 33842
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 4
- Main principle
- TRF (Tuned-Radio-Frequency but use of regeneration unknown); Screengrid 1926-1935
- Tuned circuits
- 2 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Storage and/or dry batteries
- from Radiomuseum.org
- Model: Tom Thumb Screen Grid 4 - Automatic Radio Mfg. Co.;
- Shape
- Portable set > 8 inch (also usable without mains)
- Notes
- Built-in loop antenna.
- 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)
- Other Models
-
Here you find 401 models, 163 with images and 321 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Automatic Radio Mfg. Co.; Boston (MA)