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S4VB

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ID = 2574
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to S4VB = E452T
Similar Tubes
Normally replaceable-slightly different:
  4YSGAC ; TE524
Other characteristic (electr. data):
  S4VA
Other base:
  S4VB_UX
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)
Predecessor Tubes S4V   S4VA  
Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fc) Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Description

Ra = 257k ohms. gm 3.5mA/V at Va=150, Vs=75 and Vg=-1

Lower impedance than the S4VA

 
Information source History of the British Radio Valve to 1940   p. 142 & 184
Babani, International Radio Tube Encyclopaedia   138 & 139
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
9_47.png S4VB: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		s4vb.png
S4VB: Mullard Maintenance Manual 1954
Achim Dassow
Usage in Models 3= 1929 ; 1= 1930 ; 7= 1931? ; 8= 1931 ; 1= 1932?? ; 2= 1932? ; 13= 1932 ; 1= 1933?? ; 4= 1933? ; 5= 1933 ; 6= 1934? ; 1= 1934
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):52

Collection of

Christian ADAM (F)
Collection of a member from D
Hartmut Völler (D)
Karl - Heinz Bossan (D)
 
s4vb~~2.jpg

S4VB
 
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