• Country
• United States of America (USA)

• Manufacturer / Brand
• Ozarka Inc.; Chicago

• Year
• 1926

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 49962

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

• Number of Tubes
• 7

• Valves / Tubes

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown)

• Tuned circuits
• 3 AM circuit(s)

• Wave bands
• Broadcast only (MW).

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: 7 tubes S7 [old] - Ozarka Inc.; Chicago

• Shape
• Console with any shape - in general

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• Circuit diagram reference
• Rider's Perpetual, Volume 2 = 1932 (Models 1931/1932)

• Mentioned in
• Collector's Guide to Antique Radios 4. Edition

• 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