Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 3636
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Developer: BTH (B.T.H.), British Thomson-Houston Co, Ltd. 
Tube type:  Triode, vacuum   Universal 
Identical to R_England = TM = R_Penton = E_Moorhead = ES1_Ediswan = R_Mullard
Similar Tubes
Other shape (e.g. bulb type):
  R_BTH ; R_Marconi ; R_Osram
Normally replaceable-slightly different:
Different maximum ratings:
First year Jan.1916 Saga of the Vacuum Tube, Tyne Tyne page 217
First Source (s)
1916 : History of the British Radio Valve to 1940 Thrower page 35.

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 4 Volts / If 0.65 Ampere / Direct / Battery =
Description The R valve was made after the French tube TM, a very succesful high vacuum triode produced during the WW1 100,000 times by Fotos and Métal. The famous R valve was also produced in great quantities until about 1925 - at least by BTH, Cossor,Edison Swan, GEC-Osram,Metrovick and Mullard. 
Text in other languages (may differ)
Tube prices 2 Tube prices (visible for members only)
Literature Radios von gestern, 2. Auflage   
Taschenbuch zum Röhren-Codex 1948/49   
Saga of the Vacuum Tube, Tyne
- - Manufacturers Literature
R_England: EE
Ernst Erb

R_England: rtt
Michael Schlör

R_England: own collection
Peter den Boer

Usage in Models 1= 1917? ; 1= 1919 ; 2= 1920 ; 5= 1921 ; 34= 1922 ; 3= 1923? ; 46= 1923 ; 2= 1924? ; 2= 1924 ; 1= 1925

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):97

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]