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ID = 11486
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Tube type:  Double Diode-Pentode   beam power   Power/Output 
Identical to PenDD4020

Base British-7-Pin, old (M7A) (Codex=Nh)
Was used by Radio/TV-reception etc.
Filament Vf 40 Volts / If 0.2 Ampere / Indirect / Specified current AC/DC ~ = (Series working)
Information source Taschenbuch zum Röhren-Codex 1948/49   
PenDD4020: Meine Sammlung
Rudolf Osterkamp

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PenDD4020: Telefunken Werkstattbuch
Wolfgang Bauer

PenDD4020: Ediswan Radio 1.3.1939 Sheet 26/5
Manfred Kröll † 2.9.2013

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from Just Qvigstad

Usage in Models 1= 1934?? ; 5= 1934 ; 3= 1935 ; 9= 1936 ; 1= 1937 ; 1= 1938?? ; 1= 1938?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):21

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