• Country
• United States of America (USA)

• Manufacturer / Brand
• Sonora Phonograph Co., Inc.; New York, N.Y.

• Year
• 1929 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 58207

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

• Number of Tubes
• 8

• Valves / Tubes
• RA-1 or 27 RA-1 or 27 RA-1 or 27 DE-1 or 27 RA-1 or 27 SO-1 or 45 SO-1 or 45 80

• Main principle
• TRF without regeneration

• Tuned circuits
• 4 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Details
• Record Player (perh.Changer)

• 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: A40 - Sonora Phonograph Co., Inc.;

• Shape
• Console, Highboy (legs > 50 %).

• Notes

• Push-pull af output stage.

  The scan in Radio Retailing, October 1928, page 66 (see attached picture) mentions 3 versions with the following cabinet sizes:

    - 48 x 35 x 21  
    - 50 x 42 x 22 
    - 50 x 42 x 22

  But it is not clear which one applies to the illustration.

  This model has 8 tubes (including rectifier 80), however, the text in RR refers to 7 tubes (maybe the rectifier tube was not counted). The tube 45 was on the market 1929 and later. Therefore we doubt either that tube date or that 45 was the first tube line-up. The future will tell.

   

• Price in first year of sale
• 375.00 $

• 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
• The Radio Collector's Directory and Price Guide 1921 - 1965

• Other Models

• Here you find 81 models, 33 with images and 37 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sonora Phonograph Co., Inc.; New York, N.Y.