• Country
• United States of America (USA)

• Manufacturer / Brand
• Connecticut Telephone & Electric Company (Sodion); Meriden (CT)

• Year
• 1922 ?

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 186976

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Sodion Detector Coupler J-129 - Connecticut Telephone &

• Shape
• Miscellaneous shapes - described under notes.

• Notes
• RF-input transformer for Sodion tubes, e.g. the S-13, employed in the DR-6 set.
  Low impedance input (0.5 Ohms DC) and high impedance output (50 Ohms DC), the latter most probably tuned by external capacitor (see Tyne: p.341, fig.17-11).
  Cylindrical shape. 4 top post terminals.

• Source of data
• - - Data from my own collection

• Mentioned in
• Saga of the Vacuum Tube, Tyne (pp.349, 341)

• Author
• Model page created by Joseph Woychowski. See "Data change" for further contributors.

• Other Models

• Here you find 20 models, 19 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Connecticut Telephone & Electric Company (Sodion); Meriden (CT)