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306_Star

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ID = 75733
       
Country:
United States of America (USA)
Brand: Star (tube brand) - made in Holland
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Triode, vacuum   Audio Frequency 
Identical to 306_Star
Similar Tubes
Other shape (e.g. bulb type):
  AWA99 ; DE3_UV199 ; UV199
Normally replaceable-slightly different:
  PR51_Condor ; UV199
Other base:
  PR36_Pope

Base UV199
Was used by Radio/TV-reception etc.
Filament Vf 3 Volts / If 0.06 Ampere / Direct / Battery =
Description This tube was made by N V Philips in Holland about 1924-25, in an attempt to sell tubes in the US. GE/RCA filed four patent infringement suits against Philips. Both companies realised that years of litigation might follow and agreed to a compromise: GE/RCA and Philips would share patent rights and Philips would stay out if GE/RCA territory. The element of this tube was horizontal to the base but it was basically equivalent to the GE/RCA UV199. 
Information source Saga of the Vacuum Tube, Tyne   Pages 428 & 429
-- Collector info (Sammler)   
 
star_tube_philips_ad_collection.jpg
306_Star: Alan Douglass collection
Fin Stewart

 
uv199_triode_tube~~5.gif
306_Star: Fin Stewart
Fin Stewart

 

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