Silvertone 7020 Commentator Ch= 132.814

Sears, Roebuck & Co.; Chicago (IL)

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  • Year
  • 1942/1942
perfect model
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 56934
    • 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 455 kHz; 2 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • AC/DC-set / 105-125 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 4 inch = 10.2 cm
  • Power out
  • 2.6 W (unknown quality)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Silvertone 7020 Commentator Ch= 132.814 - Sears, Roebuck & Co.; Chicago
  • Shape
  • Tablemodel without push buttons, Mantel/Midget/Compact up to 14
  • Notes

  • This model 7020 "Commentator" colored in "Walnut Brown" and the model 7022 "Commentator" colored in Ivory, both having metal cabinets, made by Noblitt-Sparks (Arvin) were a short lived attempt to get rid of certain problems with the Silvertone models 3351, 3451 and 3551 by designing them without push-down buttons and with a metal cabinet. The war stopped a longer production.
    See this text.
    Post war followers with the "old" plastic cabinet with push-down knobs but also with single ended tubes are Silvertone 7004, 7006 and 7008 (only different colors). All show the "push down" or "piano key" "instamatic" buttons, not ordinary "push buttons". The set would be pushed away with ordinary push buttons. All have the same drift problems. The chassis 132.814 of the 7020 and 7022 is even newer than the post war 7004 etc. with 132.812.

  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 14 = 1944 = before 1943

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