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NU-6B7S

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ID = 77568
       
Country:
United States of America (USA)
Brand: National Union Radio Corp.; Orange (NJ)
Tube type:  Double Diode-Pentode   Detector 
Identical to NU-6B7S
Similar Tubes
Other class quality (otherwise equal):
  6B7 ; G-6B7-S

Base 7-Pin-Base U7A = small, old, USA Top contact with a cap
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Parallel, (AC/DC)
Description This tube made with a metal shield covering the bulb. In addition to it being a detector, it was also an RF and AF amplifier. 
Dimensions (WHD)
incl. pins / tip
x 116 x 42 mm / x 4.57 x 1.65 inch
Literature -- Original prospect or advert   Shapleigh Hardware Co St Louis catalogue 1935
 
6b7~~4.png
NU-6B7S: Fin Stewart
Fin Stewart

 

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