• Country
• United States of America (USA)

• Manufacturer / Brand
• Ellis Electrical Laboratory Sales Corp.; Chicago, IL

• Year
• 1929 ??

• Category
• Microphone or Pick-up element

• Radiomuseum.org ID
• 164588

• Wave bands
• - without

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: 29N - Ellis Electrical Laboratory

• Dimensions (WHD)
• 4.5 x 2 x 0 inch / 114 x 51 x 0 mm

• Notes
• 2-button carbon microphone

• Author
• Model page created by Robin Roeckers. See "Data change" for further contributors.

• Other Models

• Here you find 2 models, 2 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ellis Electrical Laboratory Sales Corp.; Chicago, IL