Silvertone 7140

Sears, Roebuck & Co.; Chicago (IL)

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  • Year
  • 1935
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 57057
    • Brand: Silvertone

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Superheterodyne (common); ZF/IF 456 kHz; 2 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast and Short Wave (SW).
  • Power type and voltage
  • Alternating Current supply (AC) / Either 25 cycles, 105 to 125V or 60 cycles, 105 to 125 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 6 inch = 15.2 cm
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Silvertone 7140 - Sears, Roebuck & Co.; Chicago
  • Notes

  • The Sears Silvertone 7140 is an AC operated 5 tube BC and SW band receiver.

    Band Frequency Ranges are as follows:
    BC Band.............540-1720kHz
    SW Band............5.5-16.0MHz

    Chassis and schematic used in this model also used in model 7143A and 1743A.

    See details and summaries about Sears catalogs etc. This model was manufactured for Sears by Corona Radio and Television Corp., Chicago, Ill (Sears Manufacturer Source Number Code 104).

  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 7 = 1936 and before

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