• Country
• United States of America (USA)

• Manufacturer / Brand
• Crosley Radio Corp.; Cincinnati (OH)

• Year
• 1928

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 36950

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

• Number of Tubes
• 8

• Valves / Tubes
• 226 226 226 227 226 171A 171A 280

• Main principle
• TRF with regeneration

• Tuned circuits
• 3 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 120 Volt

• Material
• Wooden case

• from Radiomuseum.org
• Model: Ultrabox 706 - Crosley Radio Corp.;

• Shape
• Console, Highboy (legs > 50 %).

• Dimensions (WHD)
• 25.2 x 46.5 x 18 inch / 640 x 1181 x 457 mm

• Notes
• The Showbox was sold as a stand-alone unit, or with a metal console stand. The rare wood console model, called the Ultrabox, is showm here. The radio weight is 32.25 Lbs., and the cabinet weighs 60.5 lbs.

• Price in first year of sale
• 225.00 $

• External source of data
• Ernst Erb

• Source of data
• Collector's Guide to Antique Radios 4. Edition

• Circuit diagram reference
• Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

• Mentioned in
• The Radio Collector's Directory and Price Guide 1921 - 1965

• Other Models

• Here you find 1791 models, 1048 with images and 1282 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Crosley Radio Corp.; Cincinnati (OH)