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NU-57

Information - Help 
ID = 75909
       
Country:
United States of America (USA)
Brand: National Union Radio Corp.; Orange (NJ)
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to NU-57 = 57
Similar Tubes
Other class quality (otherwise equal):
  57S ; G-57-S

Base 6-Pin-Base U6A, old, USA Top contact with a cap
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Dimensions (WHD)
incl. pins / tip
x 123 x 39 mm / x 4.84 x 1.54 inch
Weight 42 g / 1.48 oz
Literature -- Collector info (Sammler)   
-- Original prospect or advert   Shapleigh Hardware Co St Louis catalogue 1935
 
nu_57.jpg
NU-57: From my collection.
Jay Kinnard

 
57_58~~8.png
NU-57: Fin Stewart
Fin Stewart

 


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