Silvertone Order= 57K 7228, 7229 Ch= 528.48700

Sears, Roebuck & Co.; Chicago (IL)

  • Year
  • 1958 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 259974
    • Brand: Silvertone

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

 Technical Specifications

  • Number of Transistors
  • 6
  • Main principle
  • Superhet with RF-stage; ZF/IF 455 kHz; 2 AF stage(s)
  • Tuned circuits
  • 5 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Dry Batteries / 1 x 9 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical
  • Material
  • Leather / canvas / plastic - over other material
  • from Radiomuseum.org
  • Model: Silvertone Order= 57K 7228, 7229 Ch= 528.48700 - Sears, Roebuck & Co.; Chicago
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 11.125 x 8 x 5.875 inch / 283 x 203 x 149 mm
  • Notes
  • Six Transistors plus two Germanium Diodes for battery economy. Silvertone model 57K 7228 is without battery $56.95 and model 57K 7229 is with battery $57.90. Eliptical 6x4-inch speaker.

  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

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