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FC4

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ID = 9324
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  OCTODE   Frequency converter 
Identical to FC4
Similar Tubes
Normally replaceable-slightly different:
  AC/OC4 ; MH4105 ; O407 ; VO4
Other base:
  AK1
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)
Base British-7-Pin, old (M7A) (Codex=Neo) 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

Grid from top cap.

 
Information source History of the British Radio Valve to 1940   p. 149 & 198
Wireless World (The), London (WW, 79)   
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
fc4.png FC4: Vademecum Lamp Elektronowych - Warszawa 1957
Anonymous 987 Collector

Just Qvigstad 		fc4_techdat01.png
FC4: Mullard Valves 1936
Peter Hoddow
More ...
Usage in Models 5= 1931 ; 7= 1934? ; 16= 1934 ; 2= 1935?? ; 5= 1935? ; 29= 1935 ; 1= 1936?? ; 6= 1936? ; 41= 1936 ; 2= 1937? ; 15= 1937 ; 4= 1938
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):133

Collection of

Tomasz Szczesniak (PL)
Bartosz Szwed (GB)
Frank Cuffe (IRL)
Wolfgang Thiel (NZ)
Thomas Lebeth (A)
Collection of a member from D
Rudolf Osterkamp (D)
Danko Tkalec (HR)
 
fc4_01.jpg

FC4
 
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