• Country
• United States of America (USA)

• Manufacturer / Brand
• Operadio Corp.; St. Charles (IL)

• Year
• 1925

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 49891

• • alternative name: Operadio Mfg,

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

• Number of Tubes
• 6

• Valves / Tubes
• UV199 UV199 UV199 UV199 UV199 UV199 or UV199 UV199 UV199 UV199 UV199 UX120

• Main principle
• TRF without regeneration

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries

• Loudspeaker
• Horn

• Material
• Wooden case

• from Radiomuseum.org
• Model: 1926 Consolette - Operadio Corp.; St. Charles IL

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 480 x 350 x 320 mm / 18.9 x 13.8 x 12.6 inch

• Notes

• self contained portable, includes frame aerial, batteries, and built in horn speaker.

  Has six UV199 sockets and one UX120 socket (7 sockets total) but only one of the output tube sockets can be used. If the output tube is a UV199 then the green battery wire connects to 90 volts and a 4.5 volt C battery is used. If the output tube is a UX120 then the green battery wire connects to 135 volts and a combined 4.5 and 22 volt C battery is used.

• Net weight (2.2 lb = 1 kg)
• 13.7 kg / 30 lb 2.8 oz (30.176 lb)

• Price in first year of sale
• 195.00 $

• External source of data
• Ernst Erb

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

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

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

• Literature/Schematics (1)
• Radio Engineering (April 1926, page 153)

• Other Models

• Here you find 66 models, 43 with images and 32 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Operadio Corp.; St. Charles (IL)