• Country
• United States of America (USA)

• Manufacturer / Brand
• Ozarka Inc.; Chicago

• Year
• 1927

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 95140

• Number of Tubes
• 6

• Valves / Tubes
• 201A 201A 201A 201A 201A 201A

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown); 3 AF stage(s)

• Tuned circuits
• 3 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Wooden case

• from Radiomuseum.org
• Model: Corona Model 78 DC - Ozarka Inc.; Chicago

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 650 x 220 x 270 inch / 16510 x 5588 x 6858 mm

• Notes
• Single dial tuning.
  Also available model AC Corona for mains operation.

• Net weight (2.2 lb = 1 kg)
• 9.4 kg / 20 lb 11.3 oz (20.705 lb)

• Price in first year of sale
• 60.00 $

• Source of data
• Collector's Guide to Antique Radios (6th edition)

• Mentioned in
• Radio Manufacturers of the 1920's, Vol. 2

• Author
• Model page created by Albert Vonarburg. See "Data change" for further contributors.

• Other Models

• Here you find 92 models, 61 with images and 20 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ozarka Inc.; Chicago