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OP42

Information - Help 
ID = 50385
       
Country:
Great Britain (UK)
Brand: Ekco, E.K.Cole Ltd.; Southend-on-Sea
Tube type:  Vacuum Pentode   Power/Output 
Identical to OP42 = PenA4

Base British-7-Pin, old (M7A)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 2 Ampere / Indirect
Description

3.8W audio output.

Probably made for Ekco by Mullard - a rebranded PenA4.

 
Information source - - Manufacturers Literature   
History of the British Radio Valve to 1940   p. 146
British Radio Valves - The Classic Years: 1926-1946


Just Qvigstad
Usage in Models 3= 1937 ; 3= 1938

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

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