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MM4V

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ID = 2777
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Screen-grid Tetrode   RF/IF-Stage   Controlling (mu) 
Identical to MM4V = E455
Similar Tubes
Normally replaceable-slightly different:
  AC/SGV ; ACVS ; ACVS4 ; TE554
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
Information source History of the British Radio Valve to 1940   p. 150 & 193
Babani, International Radio Tube Encyclopaedia   p. 118 & 119
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
9_42.png MM4V: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad
Usage in Models 4= 1931? ; 1= 1931 ; 3= 1932? ; 7= 1932 ; 6= 1933? ; 4= 1933 ; 1= 1934? ; 3= 1934 ; 1= 1935?
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):30

Collection of

Christian ADAM (F)
 
mullardmm4v_web.jpg

MM4V
 
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