Antique radios, Old Time Radios
MPT4_7pin
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Country:
Great Britain (UK)
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|
| Identical to |
MPT4_7pin
|
| Similar
Tubes |
Other base:
MPT4
Other base and data slightly different:
MPT4_5pin_Catkin
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|
Successor Tubes
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MKT4
|
| Base |
British-7-Pin, old (M7A)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC defined voltage) |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
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 |
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MPT4_7pin: N.H.
Norbert Haselbach
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| |
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MPT4_7pin: Marconi Advertisement
Anonymous 15 Collector
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from Just Qvigstad
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