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VP4

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ID = 10364
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to VP4
Similar Tubes
Normally replaceable-slightly different:
  A50M ; ACVP1 ; ACVP2 ; ACVP4 ; ACVS4 ; CV518 ; HP2AC ; MVS/Pen ; T4700 ; TE474
Base British-7-Pin, old (M7A) (Codex=Nf) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.65 Ampere / Indirect / Specified voltage AC/DC
Description

Mullard and Tungsram are known brands.

 
Information source History of the British Radio Valve to 1940   p. 150 & 196
- - Manufacturers Literature   
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
159_15.png VP4: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad
Usage in Models 3= 1931 ; 1= 1932? ; 1= 1933?? ; 4= 1933? ; 7= 1933 ; 3= 1934?? ; 7= 1934? ; 10= 1934 ; 3= 1935? ; 11= 1935 ; 1= 1936
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):51

Collection of

Manfred Fries (CH)
Aldo Patriarca (CH)
Roy Johnson (GB)
Tomasz Szczesniak (PL)
 
vp4_mullard~~1.jpg

VP4
 
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