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ID = 30564
United States of America (USA)
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to 204A = 304A_Sendetriode = GL-204A = CV2563 = WL-204A = S_Western = VT-22 = 38104

Base Pin-and-blade jumbo (3 contacts) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 11 Volts / If 3.85 Ampere / Direct / Specified voltage AC/DC

Pa 250W convection cooled, mu 23; 3MHz full ratings, up to 30MHz with reduced ratings.
Blade and pins special base. The tube had to be mounted vertical, base up.
Manufactured by Cunningham, Federal, GE (as GL-204-A), RCA, Taylor, Westinghouse.

Dimensions (WHD)
incl. pins / tip
x 337 x 110 mm / x 13.27 x 4.33 inch
Weight 1350 g / 47.62 oz
Information source Saga of the Vacuum Tube, Tyne   page 105, 106, 120
Babani, International Radio Tube Encyclopaedia   and: Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature
Tube Lore (I)

204a_so.png 204A: ARRL Handbook 1972
Anonymous 10 Collector

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Just Qvigstad
204A: RCA de forest amateur 1934
Miguel Angel Trujillo-Rodriguez

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