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W77

Country:  Great Britain (UK)      Brand:  Marconi-Osram - (Valves/Tubes); GB 
  Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Tube ID = 19905
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Identical to W77 = EF92 = 6CQ6 = 9D6 = CV131
Base Miniatur-7-Pin-Base B7G, USA 1940
Filament Vf 6.3 Volts / If: 0.2 Ampere / -: Indirect / -: Parallel / series AC/DC /

ww77front_1.jpg
W77: C.M.
Mario Coelho
 
mi16_g_5.gif
W77: RTT Schwandt
Günther Stabe
 
Usage in Models   3= 1949 ; 2= 1950?? ; 7= 1950 ; 13= 1951 ; 1= 1952?? ; 5= 1952 ; 5= 1953? ; 3= 1953 ; 4= 1954? ; 4= 1954 ; 3= 1955?? ; 3= 1959?? ; 5= 1959?
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):   58
You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
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