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NU-55S

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ID = 77455
       
Country:
United States of America (USA)
Brand: National Union Radio Corp.; Orange (NJ)
Tube type:  Double Diode-Triode   Text 
Identical to NU-55S
Similar Tubes
Other class quality (otherwise equal):
  55 ; G-55-S ; NU-55

Base 7-Pin-Base-general, old, USA
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Description This tube is a detector and audio frequency amplifier. It has a metal shield over the bulb 
Literature -- Original prospect or advert   Shapleigh Hardware Co St Louis catalogue 1935
 
nu_55_national_1.jpg
NU-55S: Eigene Sammlung
Aldo Patriarca

 
nu_55.png
NU-55S: Fin Stewart
Fin Stewart

 


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