• Country
• United States of America (USA)

• Manufacturer / Brand
• Audiola Radio Co.; Chicago, Illinois

• Year
• 1931

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 33516

• • Brand: Audiodyne

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

• Number of Tubes
• 6

• Valves / Tubes
• 24 24 24 27 45 80

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

• Tuned circuits
• 3 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 105-125 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• from Radiomuseum.org
• Model: 6-Tube Junior #2 - Audiola Radio Co.; Chicago,

• Notes
• The power tube (45) input is transformer coupled. There is also a version #1 using RC coupling for the power stage input.

• External source of data
• Ernst Erb

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

• Mentioned in
• Rider's Changes 7-4

• Other Models

• Here you find 111 models, 39 with images and 56 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Audiola Radio Co.; Chicago, Illinois