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279A

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ID = 16984
       
Country:
Worldwide
Brand: Common type Worldwide tube/semicond.
Tube type:  Transmitting Triode, air cooled 
Identical to 279A
Similar Tubes
Normally replaceable-slightly different:
  379A ; CV669

Filament Vf 10 Volts / If 21 Ampere / Direct
Description Scaled-up version of 251A transmitting triode. 1.2KW anode dissipation, 20MHz operating frequency. Claimed in 1932 as 'largest radiation-cooled tube on the market'.
Amperex, Heintz Kaufman, Machlett, NEC, STC, Sylvania and WE among known manufacturers. 
Information source Taschenbuch zum Röhren-Codex 1948/49   
Tube Lore (I)   

279a.png 279A: Western electric electron tubes
Miguel Angel Trujillo-Rodriguez

379a_1.png
279A: Manufacturer's Literature
Emilio Ciardiello

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279a.jpg

279A
 

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