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A442K

Information - Help 
ID = 32003
       
Country:
Netherlands
Brand: 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.
Filament Vf 4 Volts / If 0.06 Ampere
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_philips.jpg
A442K: own collection
John Koster

 
a442k_so.png
A442K
Michael Schlör

 

from Just Qvigstad


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