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KF7

Information - Help 
ID = 1123
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Tube type:  Vacuum Pentode   Universal 
Identical to KF7
Similar Tubes
Different connections:
  KF4
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 base P (P8A) (Codex=Sqo)
Filament Vf 2 Volts / If 0.05 Ampere / Direct / Battery =
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
kf7_01_1.jpg
KF7: Collection TL
Thomas Lebeth

 
kf78soc7.png
KF7: JR
Jacob Roschy

 
kf7_spec.png
KF7: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector


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

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


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