• Country
• United States of America (USA)

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

• Year
• 1952/1953

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 68251

• • alternative name: Chicago Radio Lab

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

• Number of Tubes
• 8

• Valves / Tubes
• 12BA6 12AT7 12BA6 12BA6 12AU6 19T8 25L6GT 25Z6GT

• Main principle
• Superhet with RF-stage; ZF/IF 455/10700 kHz

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

• Details
• Changer (Record changer)

• Power type and voltage
• Alternating Current supply (AC) / 60Hz, 117V=110-120 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 12 inch = 30.5 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: J880R "Waldorf" Ch= 8H20Z, Cobra-Matic - Zenith Radio Corp.; Chicago,

• Shape
• Console with any shape - in general

• Dimensions (WHD)
• 35.75 x 33 x 16 inch / 908 x 838 x 406 mm

• Notes

• Zenith model J880R is an AC operated AM-FM phono combination superheterodyne receiver.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 23 (last), covering up to 1954

• Mentioned in
• -- Original prospect or advert (1953 dealer spec sheet)

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 168, folder 14, dated 5-52)

• Other Models

• Here you find 4494 models, 4099 with images and 3605 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Zenith Radio Corp.; Chicago, IL