• Country
• United States of America (USA)

• Manufacturer / Brand
• Radio Apparatus Co. of America; Philadelphia, PA

• Year
• 1915

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

• Radiomuseum.org ID
• 196731

• from Radiomuseum.org
• Model: High Tone Rotary Spark Gap - Radio Apparatus Co. of America

• Notes
• Radio Apparatus Co. High Tone Rotary Spark Gap had an 8,000 rpm universal motor.

• Literature/Schematics (1)
• December 1916 The Wireless Age page II

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

• Other Models

• Here you find 4 models, 4 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. of America; Philadelphia, PA