Antique radios, Old Time Radios
IW4
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Country:
Great Britain (UK)
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| Identical to |
IW4
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| Similar
Tubes |
Normally replaceable-slightly different:
IW4/350
; R2
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| First Source
(s) |
22.Nov.1935 : Wireless Weekly (Australia)
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Successor Tubes
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CV1039
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Em)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 2.4 Ampere / Half indirect |
| Description |
350V rms per anode; 120mA dc mean.
Tube listed in Taschenbuch 1948/49 and Rohren Codex 1950 as 1W4
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| Information source |
History of the British Radio Valve to 1940 p. 149 & 176
Babani, International Radio Tube Encyclopaedia p. 280 & 281
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
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IW4: Tabu Röhren-Codex, 1948
Anonymous 15 Collector
More ...
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Just Qvigstad
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IW4: Mullard Valves 1936
Peter Hoddow
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):17
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