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ID = 50631
United States of America (USA)
Brand: Connecticut Telephone & Electric Company (Sodion); Meriden (CT)
Tube type:  Gas Triode   Detector 
Identical to Donle-Detector
First year 20.Dec.1922 Saga of the Vacuumtube, Tyne page 339, pictures page 340/341.
Successor Tubes Sodion_S11  

Description Designer was Dr. H.P. Donle, then still chief engineer at Connecticut Telephone and Electric Company, Meriden, Connecticut, USA. In 1925 Dr.Donle left Connecticut and Electric Company to establish his own company, the Donle Bristol Corporation of Meriden, Connecticut, where later sodion types were developed and manufactured. See Tyne, beginning page 336. This tube without name was presented December 1922 as "New Non Interfering Detector" - but the type did not get a name. Since the anode was liquid sodium, the tube has to be operated base up! The follower of October 1923 were designated as S11 and S13. 
Literature - - -   
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  Donle-Detector: Saga of the Vacuum Tube - Tyne
Gerhard Eisenbarth
Donle-Detector: Saga of the Vacuum Tube - Tyne
Gerhard Eisenbarth


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