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DCH21_9pin

Country:  Netherlands      Brand:  Philips; Eindhoven (tubes international!); Netherlands 
  Developer:  Philips; Eindhoven (tubes international!); Netherlands 
  Tube type:  Triode-Hexode   Frequency converter   Controlling (mu) 
  Late but no serial production. For instance only development samples. *****
Tube ID = 31603
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Identical to DCH21_9pin
Similar Tubes Other base:
 DCH21
Successor Tubes 1941 DCH21  

Base Loctal-9-Pin (B9G)
Filament Vf 1.4 Volts / If: 0.15 Ampere / -: Direct / -: Battery = /
Literature - - Manufacturers Literature   

cfh21_9s_r_5.jpg
DCH21_9pin: original Philips documents
Jacob Roschy

 
dch21_9b_r.png
DCH21_9pin: original Philips documents
Jacob Roschy

 

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