• 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
• 56136

• • 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) / 117; 90, 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5.25 inch = 13.3 cm

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

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

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

• Dimensions (WHD)
• 11.5 x 9.125 x 6 inch / 292 x 232 x 152 mm

• Notes

• Selenium Rectifier. Uses long-life 175-hr battery or 105-125 volt. See also the similar Silvertone model 225 Ch= 528.171-1.

• Price in first year of sale
• 36.95 $

• External source of data
• Ernst Erb

• Source of data
• The Radio Collector's Directory and Price Guide 1921 - 1965

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

• Mentioned in
• Collector's Guide to Antique Radios 4. Edition

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

• Literature/Schematics (3)
• Sears, Roebuck Catalogs (Silvertone) (Spring & Summer 1951, page 648. Fall/Winter 1951, page 798.)

• Literature/Schematics (4)
• Sears, Roebuck Catalogs (Silvertone) (Fall/Winter 1950, page 743. Mid-Season/Fall 1951, page 289.)

• Other Models

• Here you find 5482 models, 3214 with images and 4188 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sears, Roebuck & Co.; Chicago (IL)