• Country
• United States of America (USA)

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

• Year
• 1937/1938

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 56415

• • Brand: Silvertone

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

• Number of Tubes
• 8

• Valves / Tubes
• 1D5GP 1C7G 1D5GP 1D5GP 1H6G 1H4G 1J6G 1J6G

• Main principle
• Superhet with RF-stage; ZF/IF 465 kHz

• Tuned circuits
• 8 AM circuit(s)

• Wave bands
• Broadcast, Short Wave(s) and Police.

• Power type and voltage
• Storage and/or dry batteries / 90 & 4 or 4.5 & 3 Volt

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

• Power out
• 1.35 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Silvertone Order= 4638 or 4639 Ch= 101.472 - Sears, Roebuck & Co.; Chicago

• Shape
• Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.

• Dimensions (WHD)
• 19 x 19.7 x 12.9 inch / 483 x 500 x 328 mm

• Notes
• 4638 with Dry A-Battery, 4639 with Storage Battery. Speaker 6 or 8 inch. Presence of a Bias Cell.

• Price in first year of sale
• 40.00 $

• 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 14 = 1944 = before 1943

• Mentioned in
• The Sears Silvertone Catalogs 1930-1942 (page 127, 140)

• Literature/Schematics (1)
• Machine Age to Jet Age II (Riders 14-4)

• Literature/Schematics (2)
• Cathedral & Tombstone Radios (page 247.)

• Literature/Schematics (3)
• Sears, Roebuck Catalogs (Silvertone) (# 175, Fall & Winter 1937/38, page 661. #176, Spring & Summer 1938, page 467.)

• Other Models

• Here you find 5487 models, 3219 with images and 4193 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sears, Roebuck & Co.; Chicago (IL)