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KF4M

Information - Help 
ID = 33777
       
Country:
Hungary
Brand: Tungsram; Budapest (see also British T.)
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to KF4M
Similar Tubes
Other class quality (otherwise equal):
  KF4
Differences not known by us:
  KF4MB

Base Europe side contact base P (P8A) Top contact with a cap
Was used by Military and/or Government
Filament Vf 2 Volts / If 0.05 Ampere / Direct / Battery =
 
kf4m.jpg
KF4M: S.D.
Siegfried Droese

 

Usage in Models 1= 1938? ; 1= 1943?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2


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