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6F7B

Information - Help 
ID = 52650
       
Country:
Great Britain (UK)
Brand: Brimar (STC); Foots Cray
Tube type:  Triode-Pentode   Frequency converter   Controlling (mu) 
Identical to 6F7B
Similar Tubes
Normally replaceable-slightly different:
  6F7 ; 6F7E
Other base:
  6F7M
First Source (s)
05.Jul.1933 : The AWA Journal Vol. 7

Base 7-Pin-Base U7A = small, old, USA
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC
Information source - - -   
Taschenbuch zum Röhren-Codex 1948/49   
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from Just Qvigstad

Usage in Models 1= 1938 ; 1= 1939

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2

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