radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

R_BTH

Information - Help 
ID = 28083
       
Country:
Great Britain (UK)
Brand: BTH (B.T.H.), British Thomson-Houston Co, Ltd.
Tube type:  Triode, vacuum   Universal 
  <1925 rare.
Identical to R_BTH
Similar Tubes
Other shape (e.g. bulb type):
  R_England
First Source (s)
1916 : British Radio Valves - The Vintage Years, Thrower p.24,25

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.63 Ampere / Direct / Battery =
Description

Originally made with a 55 mm diameter bulb. Some BTH R tubes have beeb found with a vertical element assembly. later tubes c. 1922-25 had tapered bulbs approx. 40 mm diametera<100

 
Dimensions (WHD)
incl. pins / tip
x 118 x 55 mm / x 4.65 x 2.17 inch
Tube prices 1 Tube prices (visible for members only)
Literature - - Manufacturers Literature   1925 Brown Brothers Catalog 217
Saga of the Vacuum Tube, Tyne   Pages 217-219
 
img_20131022_0011552087123643.jpg
R_BTH: 290998507378 Ebay item
Clive Forder

 
b4~~4.gif
R_BTH: KoBi
Konrad Birkner † 12.08.2014

 
r_bth_spec.png
R_BTH: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector


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]
  
rmXorg