• Country
• United States of America (USA)

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

• Year
• 1950 ?

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

• Radiomuseum.org ID
• 67817

• • 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; Export model

• 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)

• Material
• Metal case

• from Radiomuseum.org
• Model: 6MM790E Mercury Ch= 6D90E - Zenith Radio Corp.; Chicago,

• Shape
• Chassis only or for «building in»

• Notes

• Export version of 6MM790 (listed in Rider's Vol. 18 with wrong model type 6MN790, corrected Vol. 22).

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 18 = 1949 and before

• Literature/Schematics (1)
• Rider's Perpetual, Volume 22 = covering 1951

• Other Models

• Here you find 4491 models, 4096 with images and 3601 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Zenith Radio Corp.; Chicago, IL