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220DT

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ID = 22962
       
Country:
Great Britain (UK)
Brand: Cossor, A.C.; London
Tube type:  TETRODE (Detail uncertain) 
Identical to 220DT

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928
Filament Vf 2 Volts / If 0.2 Ampere / Direct
Information source - - -   Ratheiser, Röhrenhandbuch, 1948
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