• Country
• United States of America (USA)

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

• Year
• 1963

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 215196

• • alternative name: Chicago Radio Lab

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

• Number of Tubes
• 7

• Valves / Tubes
• 12DT8 12BE6 12BA6 12BA6 12AU6 19T8 35C5

• Main principle
• Superheterodyne (common); ZF/IF 455/10700 kHz

• Tuned circuits
• 6 AM circuit(s)     10 FM circuit(s)

• Wave bands
• Broadcast (BC) and FM or UHF.

• Power type and voltage
• Alternating Current supply (AC) / 110-120 Volt

• Loudspeaker
• 2 Loudspeakers

• Material
• Wooden case

• from Radiomuseum.org
• Model: K731R Ch= 7K07 [american cabinet, mahogany] - Zenith Radio Corp.; Chicago,

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

• Dimensions (WHD)
• 15.63 x 9.94 x 7.63 inch / 397 x 252 x 194 mm

• Notes

• Zenith K731R is an AC-DC operated AM-FM receiver.
  Built-in loop antenna.

  American Provincial Cabinet in Mahogany veneers.

• Circuit diagram reference
• Photofact Folder, Howard W. SAMS

• Mentioned in
• Date 9-63 Set 653 Folder 12

• Literature/Schematics (1)
• -- Original prospect or advert

• Author
• Model page created by Arpad Roth † 27.3.17. See "Data change" for further contributors.

• Other Models

• Here you find 4496 models, 4101 with images and 3615 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Zenith Radio Corp.; Chicago, IL