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ID = 74756
United States of America (USA)
Brand: DeForest-Tubes
Developer: DeForest-Tubes 
Tube type:  Transmitting Triode, air cooled   Universal 
Identical to Oscillion_50W

Base Wires Wires only.
Was used by Transmittertube (Radio)
Filament Direct / Battery =

This tube is a 50 watt transmitting type developed in the de Forest High Bridge laboratory in The Bronx, New York in 1916. de Forest actually had a transmitter using this tube in the laboratory and a transmitter similar to this was used to broadcast the November 1916 Presidential Election results. The tube had glass arbors to strengthen the element assembly and the anode lead came from one end, while the filament and grid leads from the other end.

Information source Saga of the Vacuum Tube, Tyne   Pages 117 & 118

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