| Automatic TomThumb (Rider : Automatic 16 P: 1) |
| £1.80 (~ $2.20 or €2.10) |
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| Country | USA |
|---|---|
| Manufacturer | Automatic Radio Mfg. Co.; Boston (MA) |
| Model | Tom Thumb Portable [early] - Automatic Radio Mfg. Co.; |
| Year: 1934 | Category: Broadcast Receiver |
| Valves | 4: UX222 UX199 UX199 UX199 |
| Technology | TRF |
| Tuned Circuits | 2 AM circuit(s) |
| Wave Bands | Broadcast only (MW). |
| Power type | Dry Batteries / 2 x 45 & 3 x 1.5 & 4.5 Volt |
| Dimensions | 245 x 255 x 230 mm / 9.6 x 10 x 9.1 inch |
| Source | Book: Gernsback Vol: 5 Page: 79 |
| Source | Book: Rider Vol: 16 Page: 1 |
| Source | Book: Rider Vol: 1 Page: 1 |
| Source | Book: Gernsback Vol: A Page: 5 |