• Year
  • 1939/1940
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 58365
    • alternative name: Sonora Electric Phono

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Superheterodyne (common); ZF/IF 456 kHz
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Dry Batteries / 1,5 & 90 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: TH-46 Ch= TH - Sonora Radio & Telev. Corp.;
  • Shape
  • Tablemodel, low profile (big size).
  • Dimensions (WHD)
  • 17.25 x 9.375 x 10 inch / 438 x 238 x 254 mm
  • Notes
  • The late model TH-46 used the tubes 1A7GT 1N5GT 1H5GT 1A5GT.

  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 11 = ca. 1940 and before
  • Literature/Schematics (3)
  • -- Original prospect or advert (The Sonora Folder for 1940.)

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