• Country
• United States of America (USA)

• Manufacturer / Brand
• General Motors Radio Corp.

• Year
• 1930

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 188671

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

• Number of Tubes
• 7

• Valves / Tubes
• UY224 UY224 UY224 UY227 UX245 UX245 UX280

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown); Screengrid 1926-1935

• Tuned circuits
• 3 AM circuit(s)

• Wave bands
• Broadcast only (MW).

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

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: DayFan 93 - General Motors Radio Corp.

• Shape
• Console with any shape - in general

• Notes
• One dial (primary tuning control knob) ; Both Grinders Collectors Guide and Riders are in error when they allocate pre 1930 models to General Motors Radio Corporation. But the model A5005 93 from October 1929 was sold by GM in 1930 as DyFan 93 and its sister model A5005 94 wit hthe same chassis as DyFan 94. See company history (link). We presume that the cabinet of the GM sold models stayed the same than the 1929 models.

• Author
• Model page created by Ernst Erb. See "Data change" for further contributors.

• Other Models

• Here you find 58 models, 30 with images and 48 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from General Motors Radio Corp.