Antique radios, Old Time Radios
W21_7pin
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Country:
Great Britain (UK)
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| Identical to |
W21_7pin
= CV3804
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| Similar
Tubes |
Other base:
KTW21
; W21
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| Base |
British-7-Pin, old (M7A)
Top contact with a cap.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2 Volts / If 0.1 Ampere / Direct |
| Information source |
The Setmakers, A History of the Radio and TV Industry – (K Geddes & G Bussey 1991) p. 335
History of the British Radio Valve to 1940 148 & 196
Babani, International Radio Tube Encyclopaedia
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
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W21_7pin: Telefunken Werkstattbuch
Wolfgang Bauer
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Just Qvigstad
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Collection of
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