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ID = 50963
Great Britain (UK)
Brand: Ekco, E.K.Cole Ltd.; Southend-on-Sea
Developer: Mullard Radio Valve Co. Ltd.;  
Tube type:  Double Diode-Triode   Audio Frequency 
Identical to DT21
Similar Tubes
Normally replaceable-slightly different:

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928
Filament Vf 2 Volts / If 0.12 Ampere / Direct / Battery =
Information source - - -   
- - Manufacturers Literature   
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from Just Qvigstad

Usage in Models 1= 1937

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Forum contributions about this tube
Threads: 1 | Posts: 1
Hits: 1789     Replies: 0
DT21 (DT21)
Thomas (Tom) Going

EKCO DT21 valve

Although EKCO planned to introduce battery filament valves, they were never in fact produced.  Some of the company service manuals give these type numbers, but by the time the radio sets had been produced, E.K.Cole had concluded a "new commercial deal" with Mullard  (Philips, in the UK) and their valves were used instead. Ekco only made the 4-volt A.C. mains valves, from ca. 1936 to 1938.

Tom Going

18th June 2012

End of forum contributions about this tube

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