Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 25622
Great Britain (UK)
Brand: Ekco, E.K.Cole Ltd.; Southend-on-Sea
Tube type:  Vacuum Pentode   Power/Output 
Identical to OP41 = Pen428 = PenB4

Base British-7-Pin, old (M7A)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 2.1 Ampere / Indirect

8W audio output

Probably made by Mullard a rebranded PenB4

Text in other languages (may differ)
Information source -- Collector info (Sammler)   

op41_so.png OP41: ARL 1947
Anonymous 10 Collector

Just Qvigstad
Usage in Models 2= 1937 ; 1= 1938

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):3

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]