22.Nov.1935 : Wireless World (The), London (WW, 79)
Sockel
England-7-Stift, alt (M7A) (Codex=Ni)
Anwender
Radio/TV-Empfang etc.
Heizung
Uf 33 Volt / If 0.18 Ampere
Literatur
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