Antique radios, Old Time Radios
BK20
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Country:
Japan
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| Identical to |
BK20
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| Base |
Top contact with a cap.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
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| Description |
This tube is fitted with a 4 pin base and top cap0. Otherwise unknown. See tube photo.
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| Information source |
-- Collector info (Sammler) S Ohtsuka collection
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