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ID = 50629
United States of America (USA)
Brand: Connecticut Telephone & Electric Company (Sodion); Meriden (CT)
Developer: Connecticut Telephone & Electric Company (Sodion); Meriden (CT) 
Tube type:  Gas Triode   Detector 
  <1925 very rare. ***
Identical to J-117-Connecticut
First year 1921 Saga of the Vacuum Tube, Tyne page 336
First Source (s)
Oct.1921 : QST
Predecessor Tubes C_Donle  
Successor Tubes 1923   Sodion_S11  

Base No base
Was used by Radio/TV-reception etc.
Filament Vf 6 Volts / Direct / Battery =

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.

The J117 tube was a uniquely designed tube and the original form of this tube and its method of operation as a detector unit of which it formed a part is described in an article in QST, October 1921.  The tube was double ended with ring and pin contact bases at opposite ends..

Dimensions (WHD)
incl. pins / tip
19 x 108 x 13 mm / 0.75 x 4.25 x 0.51 inch
Weight 26 g / 0.92 oz
Tube prices 1 Tube prices (visible for members only)
Information source Saga of the Vacuum Tube, Tyne   Page 336
Tube Lore (II)
J-117-Connecticut: LBM
Bruce Morgenstern

J-117-Connecticut: B.M.
Bruce Morgenstern

Usage in Models 2= 1921

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):2

Forum contributions about this tube
Threads: 1 | Posts: 1
Hits: 342     Replies: 0
J117 text
Robert Gillespie

Around top of tube -



"TYPE J-117. MADE IN U.S.A."

Around bottom of tube -

"PAT'D JAN. 14. 1919 OTHERS"



Serial on glass marked "4980 B"

End of forum contributions about this tube

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