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ID = 11189
Brand: Mazda (tubes), Mazda-Belvu, Compagnie des Lampes; Paris
Tube type:  Vacuum Pentode   Power/Output 
Identical to DX3 = RES174d = B443
Similar Tubes
Other base:
  D100 ; DX3_5pin
First Source (s)
Mar.1929 : - - Manufacturers Literature Métal-Radio

Base Europe 4-Pin B4 + side contact (Codex=Foo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.15 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   

dx3_so.png DX3: rtt
Anonymous 10 Collector

Just Qvigstad
DX3: Document original
Christian ADAM

Usage in Models 1= 1928?? ; 2= 1930 ; 3= 1931

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):6

Collection of



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