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A442K

Information - Help 
ID = 32003
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to A442K
Similar Tubes
Normally replaceable-slightly different:
  A442

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 0.06 Ampere / Direct
Description

The A442K from 1932 differs in construction from the A442 and it is some 5mm shorter than the usual A442. Note that the earliest A442 of 1928 was 110mm overall in height but had a shorter base.

 
Dimensions (WHD)
incl. pins / tip
x 125 x mm / x 4.92 x inch
Information source -- Collector info (Sammler)   

a442k_so.png A442K
Anonymous 10 Collector


Just Qvigstad

Collection of

 
a442k_philips.jpg

 

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