• Country
• United States of America (USA)

• Manufacturer / Brand
• Sears, Roebuck & Co.; Chicago (IL)

• Year
• 1950/1951

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 56137

• • Brand: Silvertone

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

• Number of Tubes
• 5

• Valves / Tubes
• 1U4 1R5 1U4 1U5 3V4

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Line / Batteries (any type) / AC/DC 11 watts 60 cycles 117 v or battery 90 & 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Silvertone 225 Ch= 528.171-1 Order=57E 0225 - Sears, Roebuck & Co.; Chicago

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 285 x 275 x 160 mm / 11.2 x 10.8 x 6.3 inch

• Notes

• The Silvertone 225 with chassis 528.171-1 has a selenium rectifier. See also the Silvertone model 225 Ch= 528.171.

• Price in first year of sale
• 36.95 $

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 21, Copyright 1950

• Literature/Schematics (1)
• Beitman Radio Diagrams, Vol. 11, 1951

• Literature/Schematics (3)
• Sears, Roebuck Catalogs (Silvertone) (Spring & Summer 1951, page 648.)

• Literature/Schematics (4)
• Sears, Roebuck Catalogs (Silvertone) (Fall/Winter 1950, page 743.)

• Other Models

• Here you find 5471 models, 3201 with images and 4174 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sears, Roebuck & Co.; Chicago (IL)