Antique radios, Old Time Radios
PenDD4021
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Country:
Great Britain (UK)
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| Identical to |
PenDD4021
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| Base |
British-7-Pin, old (M7A) (Codex=Nh)
Top contact with a cap.
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| Filament |
Vf 40 Volts / If 0.2 Ampere |
| Description |
This is a beam power output tube with double diode. See datasheet.
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature 1937
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PenDD4021: own collection
Peter den Boer
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Just Qvigstad
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PenDD4021: own collection
Peter den Boer
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):12
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