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A642_Philips

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ID = 54210
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
  Ca. 1925 up to 1945 rare.
Identical to A642_Philips
Similar Tubes
Other base:
  A642_UX4

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 6 Volts / If 0.06 Ampere / Direct / Battery =
Information source - - Manufacturers Literature   
L'ABCDaire des lampes de TSF des jeunes années   p. 91
Babani, International Radio Tube Encyclopaedia
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren

3_1~~5.png A642_Philips: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
a442-a642data_2.png
A642_Philips: own collection
Peter den Boer

 

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