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VT-2

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ID = 14981
       
Country:
United States of America (USA)
Brand:
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to VT-2 = E_Western = WE205B = 205B = 205A = CW-931
First year 1918 Radiokatalog Band 1, 2. Auflage
Predecessor Tubes K_Western   202A  
Successor Tubes 205B  
Base UV-Base (4 Pins+Bayonet, USA 1914 WE) (Codex=F)
Was used by Military and/or Government
Filament Vf 7 Volts / If 1.35 Ampere / Direct / Battery =
Description

Output power: 5 Watt at 300 Volt.
This was developed by Western Electric in 1917 for The Signal Corps. Rare earth coated filament. Filament voltage fom 6.5 to 7.5 volts, adjusted for the rated filament current.

Originally produced with the bayonet locking pin turned at a 45 degree angle to other Western Electric tubes. Commonly referred to as the Signal Corps - Navy pin base. This was to prevent accidental use of low power tubes, causing burnout. You will find many tubes on the market today with the pins ground off, some being relocated to allow locking in to other sockets.

See Tyne's "Saga of the Vacuum Tube", page 287.

 
Tube prices 10 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
Saga of the Vacuum Tube, Tyne   p.100 , 101 et al
Tube Lore (I)
205e_sockel~~3.png VT-2: nach Western Electric 1933
Robert Schmalstieg
More ...
Just Qvigstad
Usage in Models 2= 1918 ; 1= 1920? ; 1= 1922? ; 1= 1925? ; 1= 1929
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):6
Museum "National Electronics Museum and System Source Computer Museum"
Museum "Fondo per gli Studi di Storia delle Scienze"
Museum "Museo della Radio e della Fotografia"

Collection of

Emilio Ciardiello (I)
Robert Gillespie (USA)
Valery Gromov (RUS)
Mario Giamboni (CH)
Collection of a member from I
 
vt2_2.jpg

VT-2
 
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