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R_Marconi

Information - Help 
ID = 28718
       
Country:
Great Britain (UK)
Brand:
Tube type:  Triode, vacuum   Universal 
Identical to R_Marconi = TM
Similar Tubes
Other shape (e.g. bulb type):
  R_England
Normally replaceable-slightly different:
  ES4
Other class quality (otherwise equal):
  R5V
First year 1922 Saga of the Vacuumtube, Tyne page 380
Predecessor Tubes TM  
Successor Tubes 1925   R5V  

Base Europe 4-Pin (A, 4A, B4, since 1914)
Filament Vf 4 Volts / If 0.7 Ampere / Direct / Battery =
Description British version of the French TM of 1916. 
Tube prices 8 Tube prices (visible for members only)
Literature Saga of the Vacuumtube, Tyne   1925 Brown Brothers Catalog 217
 
rm.o.v.marconivalve_3_klein_klein.jpg
R_Marconi
Geri Meier

 
r_marconi_so.png
R_Marconi: rtt
Michael Schlör

 

Usage in Models 2= 1920? ; 1= 1922? ; 6= 1922 ; 3= 1923

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):12


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