• Country
• United States of America (USA)

• Manufacturer / Brand
• Montgomery Ward & Co. (Wards, Airline); Chicago, IL

• Year
• 1925/1925 ??

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 348845

• • Brand: Airline or Air-Line

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• Horn

• Material
• Various materials

• from Radiomuseum.org
• Model: Operadio Spiral Horn - Montgomery Ward & Co. Wards,

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 14 x 7 x 18 inch / 356 x 178 x 457 mm

• Net weight (2.2 lb = 1 kg)
• 20 lb 0 oz (20 lb) / 9.080 kg

• Author
• Model page created by Dan Dames. See "Data change" for further contributors.

• Other Models

• Here you find 2288 models, 1453 with images and 1786 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Montgomery Ward & Co. (Wards, Airline); Chicago, IL