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B442/A

Information - Help 
ID = 12562
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Screen-grid Tetrode 
Identical to B442/A
Similar Tubes
Normally replaceable-slightly different:
  B442 ; H410D ; TB42

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er)
Filament Vf 4 Volts / If 0.1 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
b442a_so.png
B442/A: rtt
Michael Schlör

 

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