• Country
• United States of America (USA)

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

• Year
• 1946–1948

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 67306

• • alternative name: Chicago Radio Lab

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

• Number of Tubes
• 11

• Valves / Tubes
• 6AG5 6SB7Y 6SG7 7W7 6AL7GT 6SH7 6S8GT 6J5GT 6V6GT 6V6GT 5Y3GT

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

• Wave bands
• Broadcast, Short Wave plus FM or UHF.

• Details
• Changer (Record changer)

• Power type and voltage
• Alternating Current supply (AC) / 115 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 14 inch = 35.6 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: 12H090Z Ch=11C21Z - Zenith Radio Corp.; Chicago,

• Shape
• Console with Push Buttons.

• Notes
• Caution: since this model 12H090Z is a modified version of model 12H090, the basic schematic for the
  12H090 (Riders 15-87,88 or 15-91,92) has to be considered together with its amendment for 12H090Z (Riders 18, changes18-13)
  The model 12H090 was introduced in "Radio & Television Retailing", August 1947, page 45 as Zenith 12HO90 (letter O) instead of 12H090 (number 0).

• External source of data
• Ernst Erb

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

• Mentioned in
• Rider's Perpetual, Volume 18 = covering late 1947 to early 1948

• Other Models

• Here you find 4505 models, 4101 with images and 3631 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Zenith Radio Corp.; Chicago, IL