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P704_Champion

Information - Help 
ID = 78604
       
Country:
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):
  PZ

Base UY-Base, 5 Pins (USA, April 1927)
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 2 Ampere / Direct / Parallel, (AC/DC)
Description 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 available in June 1931. 
Dimensions (WHD)
incl. pins / tip
x 137 x 54 mm / x 5.39 x 2.13 inch
Weight 69 g / 2.43 oz
Information source -- Collector info (Sammler)   
 
champion_p704_tube_bm.jpg
P704_Champion: Bob Millard collection
Fin Stewart

 
champion_p704_pins.png
P704_Champion: Fin Stewart
Fin Stewart

 

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