Silvertone 8-Tube Order= 57EM 4440

Sears, Roebuck & Co.; Chicago (IL)

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  • Year
  • 1937
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 56268
    • Brand: Silvertone

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

 Technical Specifications

  • Number of Tubes
  • 8
  • Main principle
  • Superhet with RF-stage; ZF/IF 465 kHz
  • Tuned circuits
  • 7 AM circuit(s)
  • Wave bands
  • Broadcast plus 2 Short Wave bands.
  • Power type and voltage
  • Storage and/or dry batteries / 2 x 45 & storage battery 4 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6.5 inch = 16.5 cm
  • Power out
  • 1 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Silvertone 8-Tube Order= 57EM 4440 - Sears, Roebuck & Co.; Chicago
  • Shape
  • Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.
  • Dimensions (WHD)
  • 17.8125 x 16.875 x 12 inch / 452 x 429 x 305 mm
  • Notes
  • The Silvertone model 4440 is the same as model 4439 but this model 4440 uses a 4 volt storage battery and the model 4439 uses dry batteries only. For details see schematic. The tuning bands are broadcast 545 to 1720 kHz, short waves 2.2 to 6.5 MHz and 6 to 18 MHz.
  • Price in first year of sale
  • 36.95 $
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 8 = 1937 and before

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