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NU4_NationalUnion

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ID = 19646
       
Country:
United States of America (USA)
Brand: National Union Radio Corp.; Orange (NJ)
Tube type:  Photocell High vakuum 
Identical to NU4_NationalUnion

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Filament Vf 0 Volts / If 0 Ampere
Information source - - -   
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