• Country
• United States of America (USA)

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

• Year
• 1942

• Category
• Car Radio, perhaps also + sound player/recorder

• Radiomuseum.org ID
• 67809

• • alternative name: Chicago Radio Lab

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

• Number of Tubes
• 6

• Valves / Tubes
• 7A7 7B8 7A7 7B6 7C5 7Y4

• Main principle
• Superhet with RF-stage; ZF/IF 265 kHz

• Wave bands
• Broadcast only (MW).

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

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

• Power out
• 5.5 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: 6MF690 FORD Adjust-O-Matic Ch=6B19 - Zenith Radio Corp.; Chicago,

• Shape
• Chassis only or for «building in»

• Notes
• 6"x 9" oval speaker;

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 15 = 1947 and before

• Other Models

• Here you find 4491 models, 4096 with images and 3595 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Zenith Radio Corp.; Chicago, IL