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2D4A

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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 / Specified voltage AC/DC
Description

Common cathode. 200V max (Mullard 1935)

 
Dimensions (WHD)
incl. pins / tip		 x 88 x 33 mm / x 3.46 x 1.30 inch
Weight 30 g / 1.06 oz
Information source History of the British Radio Valve to 1940   p. 138 & 177
Babani, International Radio Tube Encyclopaedia   p. 4 & 5
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
125_1.png 2D4A: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		2d4a_techdat01.png
2D4A: Mullard Valves 1936
Peter Hoddow
Usage in Models 1= 1934? ; 7= 1934 ; 2= 1935? ; 17= 1935 ; 1= 1936?? ; 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):74

Collection of

Collection of a member from D
Bartosz Szwed (GB)
Roy Johnson (GB)
Pedro Prieto-Castro (E)
Collection of a member from D
 
2d4a.jpg

2D4A
 
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