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4242A

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ID = 15462
       
Country:
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to 4242A = 3B/850A = 542A
Similar Tubes
Normally replaceable-slightly different:
  211 ; 211C ; 242A ; 242C ; ES85
Other class quality (otherwise equal):
  CV25
Multiple differences or of other kind:
  CV444
Predecessor Tubes 4211E   4211D  

Base Jumbo 4-pin bayonet (1918)
Was used by Transmittertube (Radio)
Filament Vf 10 Volts / If 3.25 Ampere / Direct
Dimensions (WHD)
incl. pins / tip
x 210 x 64 mm / x 8.27 x 2.52 inch
Weight 200 g / 7.05 oz
Information source Babani, International Radio Tube Encyclopaedia   p.186 & 187
-- Original-techn. papers.   
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49

vt4c_19.png 4242A: Manufacturer's Literature
Emilio Ciardiello


Just Qvigstad
4242a_data.png
4242A: ITT, electronic tube 1970/71
Anonymous 10 Collector

 

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