• Country
• United States of America (USA)

• Manufacturer / Brand
• National Radio Institute (NRI); Washington, DC

• Year
• 1922 ??

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

• Radiomuseum.org ID
• 120363

• Main principle
• Crystal or Solid State Detector

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Crystal Radio - National Radio Institute NRI;

• Shape
• Tablemodel, slant panel.

• Dimensions (WHD)
• 10 x 6.5 x 7.5 inch / 254 x 165 x 191 mm

• Notes
• 4,25" tapped coil with two times each four selectable positions, condenser tuning knob in the middle, crystal on right side.

• Source of data
• -- Collector info (Sammler)

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 20 models, 20 with images and 7 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from National Radio Institute (NRI); Washington, DC