4B231 Ch= 5409

• Country
• United States of America (USA)

• Manufacturer / Brand
• Zenith Radio Corp.; Chicago, IL

• Year
• 1939

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 67465

• • alternative name: Chicago Radio Lab

• Picture
• Schematics

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

• Number of Tubes
• 4

• Valves / Tubes
• 6D8G 6S7G 6T7G 38

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

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Direct Current supply (DC) / 6 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 4B231 Ch= 5409 - Zenith Radio Corp.; Chicago,

• Shape
• Tablemodel, high profile (upright - NOT Cathedral nor decorative).

• Dimensions (WHD)
• 12.5 x 13.7 x 8 inch / 318 x 348 x 203 mm

• Notes
• Farm Radio

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

• Literature/Schematics (1)
• Zenith Radio The Glory Years 1936-1945

• Literature/Schematics (2)
• Machine Age to Jet Age II (page 319.)

• Other Models

• Here you find 4491 models, 4096 with images and 3603 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Zenith Radio Corp.; Chicago, IL