• Country
• United States of America (USA)

• Manufacturer / Brand
• Brach Mfg. Co.,L.S.; Newark (NJ)

• Year
• 1925

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 219238

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Various materials

• from Radiomuseum.org
• Model: Pur-A-Tone Audio Coupler - Brach Mfg. Co.,L.S.; Newark NJ

• Notes
• Pur-A-Tone Audio Coupler. (probably Resistor - Capacitor - Resistor Interstage combination).

• Mentioned in
• Radio Broadcast, Nov. 1925, p. 106

• Author
• Model page created by Hans-Joachim Korn † 16.11.15. See "Data change" for further contributors.

• Other Models

• Here you find 9 models, 9 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Brach Mfg. Co.,L.S.; Newark (NJ)