Silvertone 7147

Sears, Roebuck & Co.; Chicago (IL)

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  • Year
  • 1934/1935
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 224559
    • Brand: Silvertone

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Number of Transistors
  • Main principle
  • Superheterodyne (common); ZF/IF 175 kHz; 2 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast and Short Wave (SW).
  • Power type and voltage
  • Storage and/or dry batteries / 2 to 3 & -3 & -4.5 & 3 x 45 Volt
  • Loudspeaker
  • Magnetic loudspeaker (reed) generic.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Silvertone 7147 - Sears, Roebuck & Co.; Chicago
  • Notes

  • The Sears Silvertone 7147 is a battery operated 5 tube BC and SW band receiver. Uses ballast tube 30.  Riders states a 480kHz IF for model 1850 but Sears Silvertone Service Manual 1928 thru 1936 states 175kHz IF.

    Band Frequency Ranges are as follows:
    BC Band.............545-1760kHz
    SW Band............6.0-15.0MHz

    Chassis and schematic used in this model also used in models 1850, 1850A, 1851, 1862, 1868, 1868A, 1870, 1921 and 1931, with some models combining the power switch with the tone control and thus having 4 knobs instead of 5.

    See details and summaries about Sears catalogs etc. This model was manufactured for Sears by Colonial Radio Corp., Buffalo, NY (Sears Manufacturer Source Number Code 101).

  • Author
  • Model page created by John Kusching. See "Data change" for further contributors.

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