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BY1815

Information - Help 
ID = 20667
       
Country:
Great Britain (UK)
Brand:
Developer: Métal; France (tubes) 
Tube type:  Triode, vacuum   Audio Frequency 
  Ca. 1925 up to 1945 rare.
Identical to BY1815
Similar Tubes
Normally replaceable-slightly different:
  B217
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.1 Ampere / Direct / Battery =
Description

This is a low-mu tube

 
Information source British Radio Valves - The Classic Years: 1926-1946   Supplement, p. 34
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 85, p. 118
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren
by1815_metal_so.png BY1815: rtt
Anonymous 10 Collector

Just Qvigstad
 
eta_by1815_tube_pdb.jpg

 
Forum contributions about this tube
BY1815
Threads: 2 | Posts: 2
Hits: 2011     Replies: 0
BY1815_Metal (BY1815_Metal)
Peter den Boer
05.Apr.11 		  1
BY1815_Metal (BY1815_Metal) 

The brand is changed into Common production France because the same tube is sold under the Cyrnos, Mazda, Metal and Eta brand.
 
Hits: 1914     Replies: 0
BY1815_Metal (BY1815_ETA)
Peter den Boer
04.Apr.11 		  1
BY1815_Metal (BY1815_ETA) 

The Electrical Trading Association Ltd      From 1931 on.                                               Aldwych House, Aldwych,London WC2

This company imported Mètal/Mazda (French) tubes but used there own ETA brand, but the type numbering is from Mètal/Mazda. The UNIS FRANCE logo on tubes and boxes proves that they are really made in France.

 
 
BY1815
End of forum contributions about this tube
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