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4687_Triode

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ID = 21256
       
Country:
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Tube type:  LOCKED OFF TUBE (CODE 9) - see in Notes   Power/Output 
Identical to 4687_Triode = NT40 = CV1223

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 4 Volts / If 2 Ampere
Description British Admiralty store reference for CV1223 / NT40 power triode. 
Information source Taschenbuch zum Röhren-Codex 1948/49   
 

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