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DCH21

Country:  Europe      Brand:  Common type Europe tube 
  Developer:  Philips; Eindhoven (tubes international!); Netherlands 
  Tube type:  Triode-Hexode   Frequency converter   Controlling (mu) 
Tube ID = 8654
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Identical to DCH21
Similar Tubes Different connections:
 DCH31
Other base:
 DCH21_9pin
First year   Jan.1941 Tube leaflet collection E.Erb
First Source (s) Mar.1940 : Philips Bulletin # D 78
Aug.1940 : Philips Archive
Predecessor Tubes KCH1   DCH21_9pin  
Successor Tubes 1941 DCH25   DCH22  

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Vy)
Filament Vf 1.4 Volts / If: 0.15 Ampere / -: Direct / -: Battery = /
Tube prices 0 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   

dch21_a.jpg
DCH21: scc
Christian Schaufelberger

 
106.png
DCH21: Telefunken Werkstattbuch
Wolfgang Bauer

 
dch21.png
DCH21: Lorenz Empfänger-Röhren , 9. Auflage
Anonymous 54 Collector

Usage in Models   1= 1940 ; 1= 1941 ; 4= 1942 ; 2= 1943
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):   8

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