• Country
• United States of America (USA)

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

• Year
• 1955

• Category
• Television Receiver (TV) or Monitor

• Radiomuseum.org ID
• 112259

• • alternative name: Chicago Radio Lab

• Number of Tubes
• 21

• Valves / Tubes
• 6BK7A 6U8 6CB6 12BY7 12AX7 6AU6 6BN6 6BK5 6CS6 6AU5GT 6AQ7GT 6SN7GT 6CD6G 6V3A 1B3GT 5U4G 24CP4A

• Main principle
• Superhet with RF-stage; ZF/IF 45750000 kHz

• Wave bands
• Wave Bands given in the notes.

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

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 10 inch = 25.4 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: M2570RU Ch= 20M21U - Zenith Radio Corp.; Chicago,

• Shape
• Console, Lowboy (legs < 50 %).

• Notes
• 24" B/W TV with US VHF drum tuner type S-20989 and simpl UHF dial tuner type S-21000 with 6AF4, some tubes types equipped more than once.

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

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• 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