• Country
• United States of America (USA)

• Manufacturer / Brand
• Radio Apparatus Co.; Detroit, Michigan

• Year
• 1922 ?

• Category
• Detector-Radio (Crystal or diode, without tubes/transistors)

• Radiomuseum.org ID
• 347436

• • Brand: Etherphone

• Main principle
• Crystal or Solid State Detector with Amplifer

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Etherphone Crystal set - Radio Apparatus Co.; Detroit,

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Notes

• Etherphone crystal receiver. 

• Author
• Model page created by Alan Larsen. See "Data change" for further contributors.

• Other Models

• Here you find 2 models, 2 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio Apparatus Co.; Detroit, Michigan