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SI4090

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ID = 77263
       
Country:
Italy
Brand: Zenith (Tubes); Monza
Tube type:  Screen-grid Tetrode 
Identical to SI4090

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.9 Ampere / Indirect


Just Qvigstad
 

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