Antique radios, Old Time Radios
3H-220
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Country:
United States of America (USA)
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| Identical to |
3H-220
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bc)
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| Filament |
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| Description |
used in 110V AC Sets
Text in other
languages (may
differ)
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
Ballast Tube Handbook, The
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3H-220
Emilio Ciardiello
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Just Qvigstad
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