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ID = 6828
United States of America (USA)
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to 211 = VT-4B = 38211 = 511 = E711
Similar Tubes
Normally replaceable-slightly different:
  211-Spl ; 211D ; 211W ; CG211
Other class quality (otherwise equal):
Other characteristic (electr. data):
Successor Tubes 38111  

Filament Vf 10 Volts / If 3.2 Ampere / Direct
Description Convection cooled 75 Watt anode dissipation; thoriated-tungsten filament. Jumbo 4-pin base.
Mu 12. Uses include AF power amplifiers or modulators, class B RF amplifiers, class C RF amplifiers or oscillators.
Amperex, GE, National, RCA, Taylor, United, Westinghouse among known manufacturers. 
Tube prices 3 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
Saga of the Vacuum Tube, Tyne   
- - Manufacturers Literature
Tube Lore (I)
  211: The radio amateur's handbook 1964
Günter Kudicke
211: TreLe
Trev Levick

More ...
211: Manufacturer's Literature
Emilio Ciardiello

211: Audio-u.Hifi-Röhren R.zur Linde
Günther Stabe † 19.8.20

More ...

Usage in Models 1= 1929?? ; 1= 1929? ; 1= 1933 ; 1= 1934

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):4

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