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ID = 28836
Great Britain (UK)
Brand: Osram-Valves GB (not MO-Valves)
Developer: Osram-Valves GB (not MO-Valves) 
Tube type:  Half-Wave Rectifier, inert gas filled   Power-supply 
  <1925 very rare. ***
Identical to U2_Osram
First year 1918 Saga of the Vacuumtube, Tyne page 230

Base Wires Wires only
Was used by Military and/or Government
Filament Vf 18 Volts / If 6.2 Ampere / Direct / Parallel, (AC/DC)

GEC-Osram design for Navy. Thrower quotes If = 5.4 A at 18 V. First made by Osram Lamp Works of GEC, June 1918

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
175 x 330 x mm / 6.89 x 12.99 x inch
Literature Saga of the Vacuumtube, Tyne   page 230
British Radio Valves - The Vintage Years, Thrower   Page 128
- - Manufacturers Literature

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