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DL21_9pin

Country:  Netherlands      Brand:  Philips; Eindhoven (tubes international!); Netherlands 
  Developer:  Philips; Eindhoven (tubes international!); Netherlands 
  Tube type:  Vacuum Pentode   Power/Output 
  Late but no serial production. For instance only development samples. *****
Tube ID = 31608
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Identical to DL21_9pin
Similar Tubes Other base:
 DL21
First Source (s) Feb.1940 : Philips documents
Successor Tubes 1940 DL21  

Base Loctal-9-Pin (B9G)
Filament Vf 1.4 Volts / If: 0.05 Ampere / -: Direct / -: Battery = /
Literature - - Manufacturers Literature   

dl21_9s_r.jpg
DL21_9pin: original Philips documents
Jacob Roschy

 
dl21_9b_r.png
DL21_9pin: original Philips documents
Jacob Roschy

 

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