• Country
• United States of America (USA)

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

• Year
• 1920 ?

• Category
• Amateur Equipment (Other, but not Key)

• Radiomuseum.org ID
• 199456

• • alternative name: William J. Murdock Co.

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Various materials

• from Radiomuseum.org
• Model: Stationary Spark Gap No. 440 - Murdock, WM.J. Co.; Chelsea

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 4.75 x 2 x 2.25 inch / 121 x 51 x 57 mm

• Notes
• Murdock No. 440 Stationary Spark Gap.

• Price in first year of sale
• 1.00 $

• Literature/Schematics (1)
• 1920 Karlowa Radio Company catalog page 32

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

• Other Models

• Here you find 88 models, 70 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