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ID = 18475
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
Identical to U19 = CV187

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Top contact with a cap.
Filament Vf 4 Volts / If 3.3 Ampere / Direct

Va <7.1kV piv, 2.5kV rms, Ia <250mA mean.

Dimensions (WHD)
incl. pins / tip
52 x 186 x mm / 2.05 x 7.32 x inch
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   Data sheet Issue 2, July 1958
  U19: based on GEC KT77 60W ultralinear amp
Michael Watterson
U19: Frank Cuffe
Frank Cuffe

U19: Datenblatt
Wolfgang Bauer

U19: Original Data Sheet
Hermann Fleischanderl

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