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ID = 50132
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   Universal 
  Ca. 1925 up to 1945 very rare. ***
Identical to 4211E
Similar Tubes
Normally replaceable-slightly different:
  211E ; 4211D
Predecessor Tubes 4211D  
Successor Tubes 4242A  

Was used by Transmittertube (Radio)
Filament Vf 10 Volts / If 3 Ampere / Direct

Similar to 4211D, with 1 microhenry chockes added in series to grid and anode leads to prevent high-frequency parasitic oscillations.

Large 4-pin bayonet base.

Dimensions (WHD)
incl. pins / tip
51 x 184 x mm / 2.01 x 7.24 x inch
Weight 180 g / 6.35 oz
Information source - - Manufacturers Literature   not dated
- - Manufacturers Literature   November 1937 data sheet
4211E: K2GLO Collection
Robert Deuel

4211E: own collection
Peter den Boer

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