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ID = 28921
United States of America (USA)
Brand: National Union Radio Corp.; Orange (NJ)
Tube type:  Vacuum Pentode   Power/Output 
Identical to NY68
Similar Tubes
Normally replaceable-slightly different:
  238 ; 38
Other characteristic (electr. data):
First year May.1931 Radios von gestern, 2. Auflage Seite 236

Base UY-Base, 5 Pins (USA, April 1927) Top contact with a cap
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.4 Ampere / Indirect / Parallel, (AC/DC)
Description The first series of tubes for car radios - with 6.3-Volt-heater - but 0,4 A: NY64, NY65, NY67 and NY68. They "naturally" can also be used for mains current. The tube was announced by National Union May, 1931. 
Dimensions (WHD)
incl. pins / tip
x 112 x 40 mm / x 4.41 x 1.57 inch
Weight 39 g / 1.38 oz
Literature -- Collector info (Sammler)   
NY68: Bob Millard collection
Fin Stewart

NY68: Fin Stewart
Fin Stewart


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