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ID = 19733
United States of America (USA)
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to 205D = CV1749 = R205-D = 205
Similar Tubes
Other shape (e.g. bulb type):
Normally replaceable-slightly different:
  205E ; 405D ; M4205E
Other base:
First year 1924 Saga of the Vacuum Tube, Tyne
Successor Tubes 205E   D-97822   D-156734  

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Was used by Industrial
Filament Vf 4.5 Volts / If 1.6 Ampere / Direct / Specified voltage AC/DC

Locking pin rotated by 45° to prevent damage to other tubes put into the socket.
Productions by Amperex, STC and WE reported. Originally used in cinema and theatre amplifiers.

Dimensions (WHD)
incl. pins / tip
45 x x mm / 1.77 x x inch
Tube prices 7 Tube prices (visible for members only)
Information source Tube Lore (I)
Saga of the Vacuum Tube, Tyne

s_217_g_70.gif 205D: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20

Just Qvigstad
205D: KoBi
Konrad Birkner † 12.08.2014

More ...
Usage in Models 1= 1924?? ; 1= 1924? ; 4= 1925? ; 2= 1928? ; 2= 1928 ; 3= 1929?? ; 1= 1930??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):14

Collection of



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