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ID = 78604
United States of America (USA)
Brand: Champion Radio Works; Danvers, Massachusetts
Developer: Champion Radio Works; Danvers, Massachusetts 
Tube type:  Vacuum Pentode   Power/Output 
Identical to P704_Champion
Similar Tubes
Other characteristic (electr. data):

Base UY-Base, 5 Pins (USA, April 1927)
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 1.25 Ampere / Direct / Specified voltage AC/DC

Designed by Champion, this was the first power amplifier pentode developed and made in the USA. Experimental tubes were available in 1930 and the tube was demonstrated that year. Tubes were announced in January 1930 and available in June 1931.

Dimensions (WHD)
incl. pins / tip
x 137 x 54 mm / x 5.39 x 2.13 inch
Weight 59 g / 2.08 oz
Information source -- Collector info (Sammler)   
Tube Lore (II)   p. 31

champion_p704_pins.png P704_Champion: Fin Stewart
Fin Stewart

Just Qvigstad

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