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N440

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ID = 18471
       
Country:
Italy
Brand: Zenith (Tubes); Monza
Tube type:  Triode, vacuum 
Identical to N440

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 4 Volts / If 0.15 Ampere / Direct
Information source Taschenbuch zum Röhren-Codex 1948/49   
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   

n440_sock.gif N440: Universal Vademecum, 1960
Anonymous 15 Collector


Just Qvigstad
 

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