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V442

Information - Help 
ID = 51386
       
Country:
Netherlands
Brand: Megatron Radio; Hilversum (NL)
Tube type:  Screen-grid Tetrode 
  Ca. 1925 up to 1945 rare.
Identical to V442
Similar Tubes
Normally replaceable-slightly different:
  B442
Production stop Jan.1937

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Top contact screw type.
Filament Vf 4 Volts / If 0.15 Ampere / Direct / Battery =
Description HF amplification 
Information source - - Manufacturers Literature   1934
 
3_5~~2.png
V442: Telefunken Werkstattbuch
Wolfgang Bauer

 

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