• Country
• United States of America (USA)

• Manufacturer / Brand
• California Electric Supply Co.; San Francisco, California

• Year
• 1921

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

• Radiomuseum.org ID
• 221830

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• - - No sound reproduction output.

• Material
• Various materials

• from Radiomuseum.org
• Model: CESCO Rotary Spark Gap Type R300 - California Electric Supply Co.

• Shape
• Tablemodel, with any shape - general.

• Notes
• California Electric Supply Company CESCO Type R300 Rotary Spark Gap on a marble base

• Price in first year of sale
• 75.00 USD

• Literature/Schematics (1)
• Radio for December 1921 magazine advertisement page 213

• 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 California Electric Supply Co.; San Francisco, California