• Country
• United States of America (USA)

• Manufacturer / Brand
• Operadio Corp.; St. Charles (IL)

• Year
• 1927 ?

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 189043

• • alternative name: Operadio Mfg,

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• Horn

• Material
• Metal case

• from Radiomuseum.org
• Model: Junior - Operadio Corp.; St. Charles IL

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 210 x 210 x 185 mm / 8.3 x 8.3 x 7.3 inch

• Notes
• Drum shape. Internal plaster horn.

• Net weight (2.2 lb = 1 kg)
• 4.4 kg / 9 lb 11.1 oz (9.692 lb)

• Author
• Model page created by Jürgen Bauch. See "Data change" for further contributors.

• Other Models

• Here you find 66 models, 43 with images and 32 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Operadio Corp.; St. Charles (IL)