• Country
• United States of America (USA)

• Manufacturer / Brand
• Edison, Thomas A., North American Phonograph / National Phonograph; Orange, NJ

• Year
• 1929 ?

• Category
• Radio module post 1925 (not a part, not a key)

• Radiomuseum.org ID
• 37999

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

• Wave bands
• - without

• Loudspeaker
• - - No sound reproduction output.

• from Radiomuseum.org
• Model: Light-O-Matic - Edison, Thomas A., North

• Notes
• "Light-O-Matic" dial drive mechanism; this unit is used in the models "R4", "R5" and "C4", "R4 DC" and "R5 DC".

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 4 = ca. 1934 and before

• Other Models

• Here you find 89 models, 71 with images and 36 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Edison, Thomas A., North American Phonograph / National Phonograph; Orange, NJ