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ID = 3615
United States of America (USA)
Developer: Westinghouse El. & Mfg. Co. - see also Canadian W. 
Tube type:  Triode, vacuum   Universal 
Identical to WD11 = 11 = C11 = SLD11
Similar Tubes
Normally replaceable-slightly different:
Other base:
  12 ; DE11 ; WD12 ; WX12
First year Jan.1922 Saga of the Vacuum Tube, Tyne page 310
First Source (s)
Jan.1922 : Saga of the Vacuum Tube, Tyne
Successor Tubes 1923   WD12   WX12   864  

Base WD-base (Codex=Bw)
Filament Vf 1.1 Volts / If 0.25 Ampere / Direct / Battery =

Oxyde coated, first without getter then lime-getter. First form with a brass base (BB) with tip. Second has bakelite base and is smaller, tipped. Third version is bakelite, no tipp, clear. Then bakelite, no tipp but opaque getter (not clear). For Detector Aeriola Senior as first Model. Plate has a bigger diameter at the base.

Text in other languages (may differ)
Tube prices 66 Tube prices (visible for members only)
Literature Saga of the Vacuum Tube, Tyne   
Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature
  WD11: RCA
Anonymous 56 Collector
Geri Meier

WD11: KoBi
Konrad Birkner † 12.08.2014

WD11: KoBi
Konrad Birkner † 12.08.2014

Usage in Models 1= 1921 ; 4= 1922? ; 11= 1922 ; 1= 1923? ; 22= 1923 ; 11= 1924

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):50

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