• Country
• United States of America (USA)

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

• Year
• 1958 ??

• Category
• Television Receiver (TV) or Monitor

• Radiomuseum.org ID
• 340016

• • alternative name: Chicago Radio Lab

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

• Number of Tubes
• 20

• Valves / Tubes
• 6BK7A 6U8 6CB6 6CB6 6CB6 12BY7 6AU6 6BN7 6BK5 12AX7 6CS6 or 6BE6 6AH4GT 6AQ7GT 6SN7GT 6CD6G 6AX4GT 1B3GT 5U4G 5U4G 21EP4A or 21EP4B

• Main principle
• Superhet with RF-stage

• Wave bands
• VHF incl. FM and/or UHF (see notes for details)

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

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• from Radiomuseum.org
• Model: Chassis 20M20 - Zenith Radio Corp.; Chicago,

• Notes

• Black/white TV with VHF; UHF expansion optional. Tone control.
  The two 5U4 tubes are in parallel to supply higher current for the +250V B+ supply.

• Mentioned in
• -- Schematic (“Introduzione alla Televisione” Italy E.Costa, U.Hoepli editor, 1958.)

• Author
• Model page created by Pier Antonio Aluffi. 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