Antique radios, Old Time Radios
R4
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Country:
Great Britain (UK)
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Brand:
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Ferranti, GB |
| Tube type: |
High-vacuum Rectifier Power-supply |
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| Identical to |
R4
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| Similar
Tubes |
Normally replaceable-slightly different:
RV120/350
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| First Source
(s) |
1933 : History of the British Radio Valve to 1940 p. 146 & 169
22.Nov.1935 : Wireless World (The), London (WW, 79)
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Successor Tubes
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R4A_Ferranti
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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 4 Volts / If 2.5 Ampere / Direct / Specified voltage AC/DC |
| Description |
2 x 350V rms; <120mA mean.
|
| Information source |
Babani, International Radio Tube Encyclopaedia p. 286 & 287
- - Manufacturers Literature Ferranti Data 1956
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
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R4: Fin Stewart
Fin Stewart
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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):31
Collection of
Collection of a member from D |
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