Tubes / semiconductors by category - Manufacturer
Selected: Powertone (brand): Barfield Electrical Laboratories, New York NY
| Name | Maker | Year | User | Usage | Type | Base |  |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UX201A_switchtube | Arco Tube | Radio/TV-r | Audio Fre | Triode, | UX-Base | – | 2 | – | – | – | – | – | ||
| 201A | Common typ | 1925 | Radio/TV-r | Universal | Triode, | UX-Base | 2 | 85 | 2 | – | 10 | 2 | 96 | |
| 226 | Common typ | 1927 | Radio/TV-r | Audio Fre | Triode, | UX-Base | 1 | 7 | 2 | – | 2 | – | 143 | |
3 tubes or semiconductors found.