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KL4

Information - Help 
ID = 1777
       
Country:
Europe
Brand:
Tube type:  Vacuum Pentode   Power/Output 
Identical to KL4 = 3P2 = BLP61 = TKL4
Similar Tubes
Normally replaceable-slightly different:
  P226_p8
Other base:
  KL4G ; L227D ; PP2 ; PP2101 ; PP215 ; PP230
Other base and data slightly different:
  P226 ; RES212 ; TL230
First year Feb.1936 Tube leaflet collection E.Erb Nr. 34 Philips-Hefte
First Source (s)
Feb.1936 : Philips Bulletin # D34
May.1936 : Philips Bulletin # F30
Predecessor Tubes KL1_5pin  
Successor Tubes 1939   KL5   DL21  
Base Europe side contact P8A (Au P, 8SC) (Codex=Soo)
Filament Vf 2 Volts / If 0.14 Ampere / Direct / Battery =
Tube prices 3 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
  kl4.png
  KL4: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
kl4_675.jpg
KL4: Collection JR
Jacob Roschy
More ...
 
32_3.png
KL4: Telefunken Werkstattbuch
Wolfgang Bauer
More ...
 
kl4_spec.png
KL4: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
More ...

from Just Qvigstad
Usage in Models 1= 1936?? ; 6= 1936? ; 38= 1936 ; 1= 1937?? ; 5= 1937? ; 59= 1937 ; 1= 1938?? ; 9= 1938? ; 52= 1938 ; 5= 1939? ; 49= 1939 ; 1= 1940?? ; 11= 1940 ; 1= 1941? ; 2= 1941 ; 1= 1942? ; 1= 1942 ; 1= 1944 ; 1= 1946? ; 1= 1946 ; 1= 1947? ; 1= 1949
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):248
Collection of Albert Vonarburg (CH)
Collection of Jacob Roschy (D)
Collection of Hartmut Völler (D)
Collection of Christian Schaufelberger (CH)
Collection of Trev Levick (D)
Collection of Roland Biesler (D)
Collection of Patrice Zeissloff (F)
Collection of Uwe Rössler (D)
Collection of Wolfgang Bauer (A)
Collection of Karl - Heinz Bossan (D)
Collection of Danko Tkalec (HR)
Collection of a member from FIN
Collection of Francisc VISKY (RO)
Collection of Sandor Selyem-Tóth (H)
Collection of Tomasz Szczesniak (PL)
Collection of Hannu Alho (FIN)
Collection of Karl-Heinz Entrich (D)
Collection of Reinhard Riek (D)
Collection of Oskar Elm (D)
Collection of Tor Steinnes (N)
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