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2DA4

Information - Help 
ID = 30927
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Double Diode   Detector 
Identical to 2DA4 = 2D4A

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928
Filament Vf 4 Volts / If 0.65 Ampere
Description Common cathode. 200V max (Mullard 1935)
This type appears in one Mullard list and also a service manual but may be misprints for 2D4A. 
Information source - - Manufacturers Literature   
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2da4_so.png
2DA4: Austausch Röhren Lexikon, 1947
Michael Schlör

 

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