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B5

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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 Vacuum Tube, Tyne
1923 : British Radio Valves - The Vintage Years: 1904-1925 p.45
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
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)
Information source History of the British Radio Valve to 1940   Page 157
b4_base_pins~~106.png B5: Fin Stewart
Fin Stewart

Just Qvigstad 		b5_bth_spec.png
B5: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector
More ...
Usage in Models 1= 1922? ; 1= 1923 ; 1= 1925 ; 5= 1926
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):8

Collection of

John Koster (NL)
Rudolf Osterkamp (D)
Frank Cuffe (IRL)
 
b5.jpg

B5
 
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