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C304

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ID = 44385
       
Country:
United States of America (USA)
Brand: Cunningham Inc., E.T.; Harrison (NJ)
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Transmitting Triode, air cooled   Universal 
  <1925 rare.
Identical to C304 = UV204_spherical = 504
Base Pin-and-blade jumbo (3 contacts) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 11 Volts / If 14.75 Ampere / Direct / Specified voltage AC/DC
Description

In line with the agreement RCA/GE had with E T Cunningham, this tube was developed at the GE laboratories in the Spring of 1920 and it was assigned the type number in November 1920. It was announced to the public in March 1921.

Special mounting (base).

 
Dimensions (WHD)
incl. pins / tip		 x 337 x 110 mm / x 13.27 x 4.33 inch
Information source -- Collector info (Sammler)   Banneitz, TB der drahtl. Telephonie u.Telegr. 1927
- - Manufacturers Literature   1922-1923
pin_and_blade_base_jumbo_triode~~9.png C304: Fin Stewart
Fin Stewart

Just Qvigstad 		c304data.png
C304: own collection
Peter den Boer † 2025
More ...
 
c_304.png

 
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