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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 base P (P8A) (Codex=Soo)
Filament Vf 2 Volts / If 0.14 Ampere / Direct / Battery =
Tube prices 3 Tube prices (visible for members only)
Literature 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

 
32_3.png
KL4: Telefunken Werkstattbuch
Wolfgang Bauer

 
kl4_spec.png
KL4: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector


Usage in Models 1= 1936?? ; 6= 1936? ; 38= 1936 ; 5= 1937? ; 59= 1937 ; 1= 1938?? ; 9= 1938? ; 51= 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):246


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