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2D4A

Information - Help 
ID = 6505
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Double Diode   Detector 
Identical to 2D4A = 2DA4 = CV795
Similar Tubes
Normally replaceable-slightly different:
  A20B ; AC/DD ; D41 ; DD4 ; DDA1 ; V914
Different connections:
  2D4 ; AB1
Other base:
  AB2
Predecessor Tubes 2D4  
Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=F)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.65 Ampere / Indirect / Parallel, (AC/DC defined voltage)
Description

Common cathode. 200V max (Mullard 1935)

 
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
2d4a.jpg
2D4A: RFJ
Roy Johnson
 
125_1.png
2D4A: Telefunken Werkstattbuch
Wolfgang Bauer
 
2d4a_techdat01.png
2D4A: Mullard Valves 1936
Peter Hoddow

from Just Qvigstad
Usage in Models 1= 1934? ; 7= 1934 ; 2= 1935? ; 17= 1935 ; 4= 1936? ; 15= 1936 ; 5= 1937? ; 12= 1937 ; 10= 1938
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):73
Collection of a member from D
Collection of Roy Johnson (GB)
Collection of a member from D
Collection of Bartosz Szwed (GB)
Collection of Pedro Prieto-Castro (E)
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