Antique radios, Old Time Radios
2S4S
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Country:
United States of America (USA)
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| Identical to |
2S4S
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| First Source
(s) |
1931 : -- Collector info (Sammler)
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| Base |
UY-Base, 5 Pins (USA, April 1927)
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| Filament |
Vf 2.5 Volts / If 1.3 Ampere / Indirect |
| Information source |
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2S4S: ARRL Handbook 1972
Anonymous 10 Collector
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Just Qvigstad
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