• Country
• United States of America (USA)

• Manufacturer / Brand
• Radio Apparatus Co.; Pottstown, PA

• Year
• 1915

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

• Radiomuseum.org ID
• 197280

• Wave bands
• - without

• Power type and voltage
• Direct Current supply (DC)

• Loudspeaker
• - - No sound reproduction output.

• Material
• Various materials

• from Radiomuseum.org
• Model: Radio Duplex Rotary Discharge Rotary Spark Gap - Radio Apparatus Co.; Pottstown

• Shape
• Tablemodel, with any shape - general.

• Notes
• Radio Duplex Rotary Discharger rotary spark gap. The frequency was variable from 310 to 720 Hertz.

• Literature/Schematics (1)
• December 1915 The Wireless Age page VI

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

• Other Models

• Here you find 23 models, 21 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.; Pottstown, PA