• Country
• United States of America (USA)

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

• Year
• 1959

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 73980

• • alternative name: Chicago Radio Lab

• Number of Transistors
• 6

• Semiconductors

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

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 3x1.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.75 inch = 7 cm

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: R 100 Ch= 6ET4Z1, 6ET4Z2 - Zenith Radio Corp.; Chicago,

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Notes
• R 100 is an (incorrect) abbreviation for "Royal 100". Found e.g. in Sam's.
  Incorrect name!
  Please do not add information or pictures here. See at "Royal 100".

• Price in first year of sale
• 40.00 $

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 21, 1961

• Mentioned in
• Zenith Transistor Radios (p.34, 92)

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 531, folder 16.)

• Author
• Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

• 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