Power Amplifier R-107
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Northern Electric Co: Power Amplifier R-107 [mod-pre26] ID = 2402887 1400x1144
Select picture or schematic to display from thumbnails on the right and click for download.
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| Year: 1923 | Category: Radio module pre 1926 (not a part, not a key) | ||||
| Valves / Tubes | 3: 208A or 216A 208A or 216A 208A or 216A |
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| Main principle | Audio-Amplification; 2 AF stage(s) |
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| Wave bands | - without |
| Details | |
| Power type and voltage | Storage and/or dry batteries |
| Loudspeaker | - This model requires external speaker(s). |
| Power out | |
| from Radiomuseum.org | Model: Power Amplifier R-107 - Northern Electric Co. Ltd.; |
| Material | Wooden case |
| Shape | Tablemodel, Box - most often with Lid (NOT slant panel). |
| Notes | The Northern Electric R-107 Power Amplifier was initially designed for the 208A tubes but was quickly changed to the 216A power amplifier tubes. This power amplifier was Norther Electrics version of the Western Electric 7A Amplifier. This power amplifier could drive a loud speaker. The NE R-107 Power amplifier is a two stage audio amplifier with 216A tubes (originally 208A) acting as a driver with a push-pull output. |
| Price in first year of sale | 70.00 cdn |
| Mentioned in | The Early Development of Radio in Canada 1901-1930 (Page 51 and Page 58) |
Model page created by Alan Larsen. See "Data change" for further contributors.
All listed radios etc. from Northern Electric Co. Ltd.; Canada
Here you find 279 models, 230 with images and 249 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
