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B442_SERIE_100

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ID = 31110
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to B442_SERIE_100
Similar Tubes
Normally replaceable-slightly different:
  A2004S
Heater different:
  B442

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.1 Ampere / Direct / Specified current DC = (Series working)
Description

Selected B442 tube for 100 mA serial heating.

 
Text in other languages (may differ)
Information source -- Collector info (Sammler)   

3_5~~1.png B442_SERIE_100: Telefunken Werkstattbuch
Wolfgang Bauer

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Just Qvigstad

Collection of

 
b442_serie_100.jpg

B442_SERIE_100
 

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