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VL4

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ID = 238
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Developer: Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH 
Tube type:  Beam Power Tube   Power/Output 
Identical to VL4
Similar Tubes
Heater different:
  CL4
First year Jul.1938 Tube leaflet collection E.Erb Analysis by original leaflets (V7)
First Source (s)
Nov.1938 : Funk, Die Zeitschrift des Funkwesens 1938 #21
Predecessor Tubes VL1  

Base Europe side contact base P (P8A) (Codex=Sfo) Top contact with a cap
Filament Vf 110 Volts / If 0.05 Ampere / Indirect / Series, AC/DC /
Tube prices 2 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   

  vl4_schaltungsumgebung.png
  VL4: Rundfunkröhren 3. Auflage 1938
Günter Kudicke
 
vl4_112r.jpg
VL4
Jacob Roschy

 
26_12.png
VL4: Telefunken Werkstattbuch
Wolfgang Bauer

 
vl4_spec.png
VL4: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector


Usage in Models 9= 1938 ; 5= 1939 ; 1= 1946?

Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):15


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