• Country
• United States of America (USA)

• Manufacturer / Brand
• Murdock, WM.J. Co.; Chelsea

• Year
• 1914 ?

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 244213

• • alternative name: William J. Murdock Co.

• Main principle
• Crystal or Solid State Detector

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Various materials

• from Radiomuseum.org
• Model: Molybdenite Detector No. 220 - Murdock, WM.J. Co.; Chelsea

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 4.5 x 3.375 x 2 inch / 114 x 86 x 51 mm

• Notes

• Murdock Molybdenite Detector No. 220

• Net weight (2.2 lb = 1 kg)
• 0.2 kg / 0 lb 7 oz (0.441 lb)

• Price in first year of sale
• 3.00 USD

• Literature/Schematics (2)
• Murdock Apparatus Catalog No. 12 page 23

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

• Other Models

• Here you find 89 models, 72 with images and 6 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Murdock, WM.J. Co.; Chelsea