• Country
• United States of America (USA)

• Manufacturer / Brand
• Ozarka Inc.; Chicago

• Year
• 1928

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 49946

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

• Number of Tubes
• 9

• Valves / Tubes
• 26 26 26 26 27 26 112A or 71A 112A or 71A 80

• Main principle
• TRF without regeneration; 2 AF stage(s)

• Tuned circuits
• 4 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 110 Volt

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: Stratford Model 89 AC - Ozarka Inc.; Chicago

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Dimensions (WHD)
• 29 x 9.75 x 12.25 inch / 737 x 248 x 311 mm

• Notes

• The model 89 from Ozarka Inc, Radolek Co. has one dial (primary tuning control knob) and uses 5 tubes "26" plus a "27" and twice the tubes "112A" or "71A" and the rectifier "80".

  Cabinet by Hamilton.

  An optional matching table was available for the Ozarka Stratford. The bottom of the radio cabinet forms the top of the table when bolted together. The table has a platform for placing either the Magnetic or Dynamic Ozarka Loud Speaker

• 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

• Literature/Schematics (1)
• 1928 Ozarka Sales Catalog

• 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