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DCH21

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ID = 8654
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode-Hexode   Frequency converter   Controlling (mu) 
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 2 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 2= 1941 ; 5= 1942 ; 1= 1943

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):8


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