• Country
• United States of America (USA)

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

• Year
• 1965

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 74026

• • alternative name: Chicago Radio Lab

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

• Number of Transistors
• 8

• Semiconductors
• 121-xx

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 3 AF stage(s)

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 2 x 1.5 Volt

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

• Power out
• 0.2 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Royal 180-G Shirt Pocket Radio Ch= 8MT50Z8 - Zenith Radio Corp.; Chicago,

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

• Notes
• Royal 180-G color=white/beige
  Royal 180Y-G color=ebony/white
  Royal 180J-G color=rust/white
  
  Transistor complement (Zenith part numbers):
  Oscillator 121-243
  Mixer 121-244
  1st IF 121-242
  2nd IF 121-243
  1st AF 121-309
  2nd AF/driver 121-310
  Push-pull output stage 2 x 121-311

• Price in first year of sale
• 23.00 $

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 26, 1966

• Mentioned in
• Zenith Transistor Radios

• Author
• Model page created by Konrad Birkner † 12.08.2014. 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