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ID = 1123
Brand: Common type Europe tube/semicond.
Tube type:  Vacuum Pentode   Universal 
Identical to KF7
Similar Tubes
Different connections:
First year 1935 Tube leaflet collection E.Erb Analysis by original leaflets (V7)
First Source (s)
Jul.1935 : Die Sendung # 7
May.1935 : TR3505-189
Successor Tubes 1936   KF4  

Base Europe side contact P8A (Au P, 8SC) (Codex=Sqo)
Filament Vf 2 Volts / If 0.05 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   

kf78soc7.png KF7: JR
Jacob Roschy

Just Qvigstad
KF7: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

More ...
Usage in Models 2= 1935 ; 1= 1936 ; 1= 1937?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):4

Collection of



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