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Valves, Adverts & Boxes by Make or Brand

    
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BTH

Valve List

Tungar Advert.
•Modern Wireless
•November, 1923.
R Type Advert.
•Modern Wireless
•January, 1924.
B5 Advert.
•Radio Valves and How to Use Them
•January, 1924.
R B4 & B5 Advert.
•Modern Wireless
•February, 1924.
R B4 & B5 Advert.
•Modern Wireless
•April, 1924.
B4 Advert.
•The Wireless Constructor
•December, 1924.
B8 Advert.
•Wireless World
•March 23, 1927.
B8 Advert.
•Wireless World
•May 11, 1927.
2 Volt Range, B21, B22, B23 & B8 Advert.
•Wireless World
•September 7, 1927.
B21, B22 & B23 Advert.
•Wireless World
•October 5, 1927.
B210H, B210L & B215P Advert.
•Wireless World
•January 4, 1928.
Nickel Filament B210H, B210L & B215P Advert.
•Wireless World
•February 8, 1928.
Nickel Filament B210H, B210L & B215P Advert.
•Wireless World
•February 22, 1928.
Mazda Nickel Filament Valves Advert.
•Wireless World
•November 28, 1928.
Mazda Brand Valves Advert.
•Wireless World
•November 28, 1928.
Mazda Nickel Filament Valves Advert.
•Wireless World
•December 19, 1928.
 
See Also
Mazda
•From 1929
 

Audion

R-Type

B3

B4

B4 1925

LF407
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