• Country
• United States of America (USA)

• Manufacturer / Brand
• Multiphone Company; Oakland, California

• Year
• 1924

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

• Radiomuseum.org ID
• 49431

• Main principle
• Crystal or Solid State Detector

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Multiphone [early] - Multiphone Company; Oakland,

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

• Dimensions (WHD)
• 6.25 x 5 x 0.5 inch / 159 x 127 x 13 mm

• Notes

• One dial (primary tuning control knob).

  see also here.

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• Mentioned in
• Crystal Clear (Volume 1) (p.77, Fig. 96A and 96B)

• Other Models

• Here you find 1 models, 1 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Multiphone Company; Oakland, California