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History of the manufacturer  

Connecticut Telephone & Electric Company (Sodion); Meriden (CT)

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Name: Connecticut Telephone & Electric Company (Sodion); Meriden (CT)    (USA)  
Abbreviation: connecticu
Products: Model types Tube manufacturer

Connecticut Telephone and Electric Company, Meriden, Connecticut, USA.

Dr.H.P.Donle was Chief engineer. He invented and developed the Sodion tube, a soft detector tube working with Sodium vapor, which was evaporated by heating from a reservoir of liquid sodium.

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.

Some models:
Country Year Name 1st Tube Notes
USA  43 Field Telephone EE-108   The Field Telephone EE-108 is designed to provide communication without the use of batteri... 
USA  24 Sodion Detector Unit Type D-1 Sodion_S13  The Type D-1 Detector consists of a standard J-128 socket, J-130 Rheostat, J-133 Potentiom... 
USA  24 Triple Range Variable Condenser Type D-10    
USA  23 1-Tube Audio Amplifier UV201   
USA  20 Crystaloi Detector Type O   The Electrical Experimenter - January 1917 - wrote for the foregoing model by Turney ... 
USA  20 Crystaloi Detector Type AA with Buzzer coupling   Originally developed and marketed by the Eugene Turney Company in 1915, the Type AA Cry... 
USA  20 Crystaloi Detector Type A   Originally designed by Eugene Turney , Ct in 1916. In 1920 Connectictut Telephone and E... 
USA  21 Variable Condenser J-107 [Flush Mount]    
USA  22 J-120 UV201  Introductory ad in QST, December 1922 
USA  21 Connecticut Tuning Unit   1921 Connecticut Telephone & Electric Tuning Unit covered the 50 to 2500 meters wave lengt... 
USA  21 Connecticut Detector Unit J-117-Connecticut  1921 Connecticut Telephone & Electric Detector Unit utilizing the J-117 Connecticut tube. 
USA  21 Sodion JR-3 J-117-Connecticut  The Connecticut Telephone & Electric JR-3 Receiver was designed to use the J-117 tube. The...