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Pen40DD

Information - Help 
ID = 11467
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Double Diode-Pentode   Power/Output 
Identical to Pen40DD
Similar Tubes
Other base:
  CBL1

Base British-7-Pin, old (M7A) (Codex=Nb)
Filament Vf 44 Volts / If 0.2 Ampere / Indirect / Series, AC/DC
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
pen40dd.jpg
Pen40DD: Peter Hoddow
Peter Hoddow

 
164_3.png
Pen40DD: Telefunken Werkstattbuch
Wolfgang Bauer

 

Usage in Models 1= 1938 ; 1= 1939? ; 1= 1939

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3


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