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ID = 46104
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Developer: Marconi-Osram - (Valves/Tubes); GB 
Tube type:  Transmitting Tetrode, air cooled   Text 
Identical to E1155
Similar Tubes
Other class quality (otherwise equal):
Successor Tubes CV1257  

Base Jumbo 4-pin bayonet (1918) Top contact with a cap.
Was used by Radar
Filament Vf 8 Volts / If 6 Ampere / Indirect

Metal-glass power tetrode, integral copper radiator. 60W anode dissipation, 12KV max voltage.
4-pin jumbo base. E prefix used by MOV for experimental tubes. Developed at the Hirst Research Centre of GEC.

Information source -- Original-techn. papers.   
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren   

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