Antique radios, Old Time Radios
204B
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Country:
United States of America (USA)
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| Identical to |
204B
= W_Western
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| First Source
(s) |
1915 : Saga of the Vacuum Tube, Tyne p.104, 105
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| Was used by |
Transmittertube (Radio) |
| Filament |
Vf 9 Volts / If 4 Ampere / Direct |
| Description |
Banks of such tubes were employed for the radiotelephony tests Arlington-Paris. 1925. Most of the tubes at Arlington were unbased
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| Information source |
Saga of the Vacuum Tube, Tyne page 105, 106, 280
Tube Lore (II) p. 234
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