• Country
• United States of America (USA)

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

• Year
• 1936/1937

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 56246

• • Brand: Silvertone

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

• Number of Tubes
• 4

• Valves / Tubes
• 6D8G or 6A8G 6S7G or 6K7G 6Q6G or 6Q7G 6K6G

• Main principle
• Superheterodyne (common); ZF/IF 456 kHz

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast (MW) and Tropical/Marine/Police Band(s) = 150-200m.

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 6 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6 inch = 15.2 cm

• Power out
• 1.06 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Silvertone Order= 57DM 4421 Ch= 104.127 - Sears, Roebuck & Co.; Chicago

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 14 x 11.7 x 8.75 inch / 356 x 297 x 222 mm

• Notes
• Farm radio. Sync. vibrator for +B.

• Price in first year of sale
• 29.95 $

• 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 8 = 1937 and before

• Mentioned in
• The Sears Silvertone Catalogs 1930-1942 (page 106)

• Literature/Schematics (1)
• Machine Age to Jet Age III (Riders 8-19, 20, 21)

• Literature/Schematics (2)
• Cathedral & Tombstone Radios (page 244.)

• Literature/Schematics (3)
• Sears, Roebuck Catalogs (Silvertone) (# 173, Fall & Winter 1936/37, page 612.)

• Other Models

• Here you find 5486 models, 3218 with images and 4192 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sears, Roebuck & Co.; Chicago (IL)