Antique radios, Old Time Radios
425A_WE
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Country:
United States of America (USA)
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| Identical to |
425A_WE
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| Similar
Tubes |
Other characteristic (electr. data):
426A_WE
Multiple differences or of other kind:
411A_WE
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| Predecessor Tubes |
333A
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| Base |
Wires only.
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| Filament |
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| Description |
Miniature, red lacquered bulb on molded base with flying leads. Cold cathode tetrode with separate cathode for starter electrode, so that the starter is isolated from the main circuit. 180V, 5mA. Intended as telephone ringer isolator. Replaces 333A
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| Information source |
Tube Lore (I)
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| Data Compliance |
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