22.Nov.1935 : Wireless World (The), London (WW, 79)
Zoccolo
British-7-Pin, old (M7A) (Codex=Ni)
Utilizzata per
Radio/TV-reception etc.
Filamento
Vf 33 Volt / If 0.18 Ampere
Bibliografia
Babani, International Radio Tube Encyclopaedia p. 278 & 279
- - Manufacturers Literature 1935
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49