• Country
• United States of America (USA)

• Manufacturer / Brand
• General Motors Radio Corp.

• Year
• 1930/1931

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 42882

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

• Number of Tubes
• 8

• Valves / Tubes
• 224 224 224 227 227 245 245 280

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown); 2 AF stage(s); Screengrid 1926-1935

• Tuned circuits
• 4 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC)

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: 120 "The Hepplewhite" - General Motors Radio Corp.

• Shape
• Console, Lowboy (legs < 50 %).

• Dimensions (WHD)
• 26 x 40 x 16 inch / 660 x 1016 x 406 mm

• Notes

• The General Motors model 120 "The Hepplewhite" is an AC operated, 8 tube BC band receiver. This radio has four tuned radio frequency circuits using three 224 screen grid tubes, a dectector stage using a 227 tube, a first audio stage using a 227 tube and the final audio stage consisting of two 245 tubes configured as a push-pull amplifier.  The set also uses a 280 full wave rectifier tube.

  1930 General Motors Catalog states:  A style named after its creator, George Hepplewhite, a cabinet maker of England whose design began to influence British furniture-making about 1760.  Noted for the use of straight lines and graceful curves.  This model is a simple, graceful lowboy in harmony with practically any setting. 

  There are four knobs: Upper left is the tone control, lower left is the power switch, upper right is the station selector and the lower right is the volume control.  The small lower dial is the tone indicator.

  The following models use the same chassis and schematic but have different cabinets:

  Model	Configuration
  120 "The Hepplewhite"	Radio
  130  "The Sheraton"	Radio
  140 "The Late Italian"	Radio
  150 "The Queen Anne"	Radio - Phonograph
  160 "The Georgian"	Radio - Phonograph

   

• Price in first year of sale
• 136.00 $ +

• External source of data
• Ernst Erb

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

• Mentioned in
• - - Manufacturers Literature (General Motors Catalog Form R-3207 Adv 5/1930)

• 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.