• Country
• United States of America (USA)

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

• Year
• 1953

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 68257

• • alternative name: Chicago Radio Lab

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

• Number of Tubes
• 6

• Valves / Tubes
• 12BE6 6BJ6 12AT6 12J5 50C5 35W4 or 35Z5G

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

• Wave bands
• Broadcast only (MW).

• Details
• Record Player (perh.Changer)

• Power type and voltage
• Alternating Current supply (AC) / 117 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 7.5 inch = 19.1 cm

• Material
• Bakelite case

• from Radiomuseum.org
• Model: K666R Ch= 6K02 - Zenith Radio Corp.; Chicago,

• Shape
• Tablemodel, with any shape - general.

• Notes
• Sam´s 203-18. This model has broadcast only. See also other models with broadcast ans shortwave (scale) before uploading a picture. By the way: We normally write Cobra-Matic as used by Zenith, but only here we also bring "Cobramatic" to the model type - just to get a result for users who write wrongly "Cobramatic" instead "Cobra-Matic" into the search field. Cobra-Matic is just a brand. Zenith used it for this type of record changer. Record players and changers were often built for Zenith by Webster, Seeburg, BSR etc. - at least until the WW2.

• External source of data
• Ernst Erb

• Source of data
• Guide to Old Radios

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

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

• 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