• Country
• United States of America (USA)

• Manufacturer / Brand
• Midwest Radio Co., The, (Miraco); Cincinnati, OH

• Year
• 1929

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 47204

• • Brand: Miraco

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

• Number of Tubes
• 9

• Valves / Tubes

• Main principle
• TRF without regeneration; Screengrid 1926-1935

• Tuned circuits
• 4 AM circuit(s)

• Wave bands
• Broadcast only (MW).

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

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: AC9-4SG 9tubes screen-grid Chassis - Midwest Radio Co., The, Miraco

• Shape
• Chassis only or for «building in»

• Notes
• One dial (primary tuning control knob)  

• Price in first year of sale
• 49.00 $

• External source of data
• Ernst Erb

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

• Circuit diagram reference
• Rider's Perpetual, Volume 3 = 1933 and before

• Mentioned in
• Radio Manufacturers of the 1920's, Vol. 2 (p.181)

• Other Models

• Here you find 317 models, 182 with images and 214 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Midwest Radio Co., The, (Miraco); Cincinnati, OH