Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 28416
Great Britain (UK)
Brand: BTH (B.T.H.), British Thomson-Houston Co, Ltd.
Tube type:  Triode, vacuum   RF/IF-Stage 
Identical to B5H
First year 1923 Saga of the Vacuum Tube, Tyne 389
First Source (s)
1926 : British Radio Valves - The Vintage Years, Thrower p.47

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 2.8 Volts / If 0.06 Ampere / Direct / Battery =
Description for RF amplification.

Va range 40 to 120
Ra = 55,000, µ=17.5 
Text in other languages (may differ)

Information source - - Manufacturers Literature   Advertisement February 1927

from Just Qvigstad

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]