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ID = 3019
Great Britain (UK)
Brand: MO Valve Co. Ltd.; GB
Developer: MO Valve Co. Ltd.; GB 
Tube type:  Vacuum Pentode   Power/Output 
Identical to DPT
Similar Tubes
Other base:
First year 1931 The Saga of Marconi Osram Valve

Base British-7-Pin, old (M7A) (Codex=Ndo)
Was used by Radio/TV-reception etc.
Filament Vf 16 Volts / If 0.25 Ampere / Indirect / Series, DC
Dimensions (WHD)
incl. pins / tip
x 136 x 57 mm / x 5.35 x 2.24 inch
Weight 68 g / 2.40 oz
Information source - - Manufacturers Literature   
Taschenbuch zum Röhren-Codex 1948/49   
Roy Johnson

DPT: osram wireless guide 1931
Giuseppe Antonio Tusini

from Just Qvigstad

Usage in Models 1= 1931 ; 35= 1932 ; 3= 1933? ; 12= 1933 ; 1= 1934?? ; 2= 1934? ; 9= 1934

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):63

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