• Country
• United States of America (USA)

• Manufacturer / Brand
• Radio Products Company, The (Dayrad); Dayton, OH

• Year
• 1931 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 52580

Click on the schematic thumbnail to request the schematic as a free document.

• Wave bands
• - without

• Power type and voltage
• Dry Batteries / 4.5 Volt

• from Radiomuseum.org
• Model: DayRad "Volt-Ohmmeter" 309 - Radio Products Company, The

• Circuit diagram reference
• Rider's Perpetual, Volume 3 = 1933 and before

• Author
• Model page created by Peter Rutishauser. See "Data change" for further contributors.

• Other Models

• Here you find 23 models, 8 with images and 16 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio Products Company, The (Dayrad); Dayton, OH