Antique radios, Old Time Radios
DO25
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Country:
Great Britain (UK)
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| Identical to |
DO25
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| Similar
Tubes |
Normally replaceable-slightly different:
HV65
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| First Source
(s) |
22.Nov.1935 : Wireless World (The), London (WW, 79)
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 6 Volts / If 1.1 Ampere / Direct / Specified voltage AC/DC |
| Description |
Mullard Data of May 1931 gives the heater current as 1.8A.
Va <400.
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| Information source |
History of the British Radio Valve to 1940 p. 149, 175, 176, 204
Experimental Wireless & Wireless Engineer Mullard Advertisement May 1931
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
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DO25: Telefunken Werkstattbuch
Wolfgang Bauer
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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):2
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| Data Compliance |
More Information |
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