Antique radios, Old Time Radios
OP41
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Country:
Great Britain (UK)
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| Identical to |
OP41
= Pen428
= PenB4
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| Base |
British-7-Pin, old (M7A)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 2.1 Ampere / Indirect |
| Description |
8W audio output
Probably made by Mullard a rebranded PenB4
Text in other
languages (may
differ)
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| Information source |
-- Collector info (Sammler)
History of the British Radio Valve to 1940 p. 146
British Radio Valves - The Classic Years: 1926-1946
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OP41: ARL 1947
Anonymous 10 Collector
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Just Qvigstad
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3
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