Crystal Amplifier
Brown S. G. Ltd.;: Crystal Amplifier [Ampl/Mixer] ID = 2377005 1400x1059
Select picture or schematic to display from thumbnails on the right and click for download.
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| Year: 1923–1925 | Category: Audio Amplifier or -mixer |
| Main principle | Audio-Amplification; 2 AF stage(s) |
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| Wave bands | - without |
| Details | |
| Power type and voltage | Dry Batteries / 4 Volt |
| Loudspeaker | - This model requires external speaker(s). |
| Power out | 0.3 W (unknown quality) |
| from Radiomuseum.org | Model: Crystal Amplifier - Brown S. G. Ltd.; London |
| Material | Wooden case |
| Shape | Tablemodel, Box - most often with Lid (NOT slant panel). |
| Dimensions (WHD) | 13.5 x 5 x 5 inch / 343 x 127 x 127 mm |
| Notes | Mechanical amplifier for driving a loudspeaker from a crystal set, 2 stages plus output transformer, each stage consists of a magnetic reed system plus a differential carbon microphone. |
| Net weight (2.2 lb = 1 kg) | 1.9 kg / 4 lb 3 oz (4.185 lb) |
| Source of data | Radio! Radio! |
| Mentioned in | The Cat's Whisker, Hill, 1978 |
Model page created by John Hupse † 28.9.20. See "Data change" for further contributors.
All listed radios etc. from Brown S. G. Ltd.; London
Here you find 49 models, 37 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
