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ID = 25358
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Triode, vacuum   Audio Frequency 
Identical to 101D = 101DW = VT31_GPO = CV1638 = CV1778 = SY4101D = 101D_Wecoltd = R208-A = 208A_Wecoltd = 208A
Similar Tubes
Normally replaceable-slightly different:
  101DW_Wecoltd ; 4101D ; D79344
Other class quality (otherwise equal):
First Source (s)
1921 : Saga of the Vacuum Tube, Tyne
Successor Tubes 101F  

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Filament Vf 4 Volts / If 1 Ampere / Direct / Battery =
Description "L tube"; Tyne says 4.1V / 1.15A;
4.2V 1.0A; gm=1.07, Ra=5800, @Va=130, Ia= 7.7mA (Babani).
'Tennis-ball' bulb, later ST14. 
Text in other languages (may differ)
Tube prices 3 Tube prices (visible for members only)
Information source Ballast-Tube Handbook; Jacobi 1985   
Babani, International Radio Tube Encyclopaedia   
- - Manufacturers Literature

101d_sockel.png 101D: nach Western Electric 1941
Robert Schmalstieg

Just Qvigstad
101D: KoBi
Konrad Birkner † 12.08.2014

More ...
Usage in Models 1= 1925?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of



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