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D4_Zenith

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ID = 20681
       
Country:
Italy
Brand: Zenith (Tubes); Monza
Tube type:  Space Charge Tetrode 
Identical to D4_Zenith

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Sidecontact.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.06 Ampere / Direct / Battery =

d4socket.png D4_Zenith: D.E. Ravalico, Il Radiolibro, Hoepli
Alessandro De Poi

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Just Qvigstad
d4char.png
D4_Zenith: D.E. Ravalico, Il Radiolibro, Hoepli
Alessandro De Poi

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zenith_d4_02.jpg

 

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