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B5

Information - Help 
ID = 3832
       
Country:
Great Britain (UK)
Brand: BTH (B.T.H.), British Thomson-Houston Co, Ltd.
Developer: BTH (B.T.H.), British Thomson-Houston Co, Ltd. 
Tube type:  Triode, vacuum   Universal 
  <1925 rare.
Identical to B5 = VT28_GPO
First Source (s)
1923 : Saga of the Vacuumtube, Tyne
1923 : British Radio Valves - The Vintage Years, Thrower p.45

Base Europe 4-Pin (A, 4A, B4, since 1914)
Filament Vf 2.8 Volts / If 0.06 Ampere / Direct / Battery =
Description GB: BTH's first dull emitter valve (60 mA). Literature: Thrower, British Radio Valves. Va <80. "Designed for use with dry cells for the filament. Made in the Mazda Lamp Works, Rugby" (RFJ Advertisement by BTH) 
Tube prices 1 Tube prices (visible for members only)
Literature - - Data from my own collection   
 
b5.jpg
B5: FC
Frank Cuffe

 
b5_bth_spec.png
B5: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector


Usage in Models 1= 1922? ; 1= 1923 ; 1= 1925 ; 2= 1926

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):5


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