Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 20667
Brand: Common type France tube/semicond.
Tube type:  Triode, vacuum   Audio Frequency 
  Ca. 1925 up to 1945 rare.
Identical to BY1815
Similar Tubes
Normally replaceable-slightly different:

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 2 Volts / If 0.1 Ampere / Direct / Battery =
BY1815: rtt
Michael Schlör


from Just Qvigstad

Forum contributions about this tube
Threads: 2 | Posts: 2
Hits: 1510     Replies: 0
BY1815_Metal (BY1815_Metal)
Peter den Boer

The brand is changed into Common production France because the same tube is sold under the Cyrnos, Mazda, Metal and Eta brand.

Hits: 1479     Replies: 0
BY1815_Metal (BY1815_ETA)
Peter den Boer

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.


End of forum contributions about this tube

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]