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R5V

Information - Help 
ID = 28731
       
Country:
Great Britain (UK)
Brand: MO Valve Co. Ltd.; GB
Tube type:  Triode, vacuum   Universal 
Identical to R5V
Similar Tubes
Normally replaceable-slightly different:
  HL565
Other class quality (otherwise equal):
  R_Marconi
Heater and shape different:
  II_Marconi
First year 1925 Saga of the Vacuumtube, Tyne page 382, 384
First Source (s)
Nov.1924 : - - Manufacturers Literature
Predecessor Tubes R_Marconi  

Base Europe 4-Pin (A, 4A, B4, since 1914)
Filament Vf 5 Volts / If 0.7 Ampere / Direct / Battery =
Description
Improved type R with longer working life. First made with a spherical bulb but later versions had a tapered glass bulb.
"Suitable Anode Volts 30-120" Data on box.

Manufacturer data states 60-120V as LF amplifier, 30-50V as HF amplifier and detector.
Amplification factor of 9. Successor to RZ. Manufacturer's Catalogue of November 1924 includes this tube 
Dimensions (WHD)
incl. pins / tip
42 x 110 x mm / 1.65 x 4.33 x inch
Literature British Radio Valves - The Vintage Years, Thrower   
Saga of the Vacuumtube, Tyne   
70 Years of Radiotubes and V.
 
r5v.jpg
R5V: RFJ
Roy Johnson

 
r5v_so.png
R5V: rtt
Michael Schlör

 
r5v1.png
R5V: own collection
Peter den Boer




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