• Country
• United States of America (USA)

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

• Year
• 1958/1959

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 152087

• • alternative name: Chicago Radio Lab

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

• Number of Transistors
• 7

• Semiconductors
• 2N485 2N483 2N483 2N482 2N362 2N632 2N632

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / AA : 4 x 1.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 3.5 inch = 8.9 cm

• Power out
• 0.1 W (0.15 W max.)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Royal 200F Ch= 7AT48Z - Zenith Radio Corp.; Chicago,

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

• Dimensions (WHD)
• 100 x 163 x 44 mm / 3.9 x 6.4 x 1.7 inch

• Notes

• The Zenith Royal 200F is a battery operated 7 transistor portable BC band radio. The BC band frequency tuning range is 540-1600kHz. The production runs had 3 different chassis due to limited quantities of transistors from various manufacturers. Has push-pull output stage and an earphone jack that disconnects the speaker for private listening. Chassis have chassis numbers along with a color code dot in battery compartment. Cabinet color is turquoise.

  NOTE: Different chassis have different transistors!

  The following models use the same schematic but have different chassis and cabinet colors:

  Model Number (x=cabinet color)	Chassis	Transistor Manufacturer	Color Code Dot	Cabinet Color
  Royal 200x	7AT48Z	Raytheon	Red	F, K, V, W
  Royal 200x	7AT48Z2	RCA	Black	F, K, V, W
  Royal 200x	7AT48Z4	Tung Sol	Green	F, K, V, W

  Cabinet colors are as follows:

  Cabinet Color Code	Cabinet Color
  F	Turquoise
  K	Brown
  V	Coral
  W	White

   

• Price in first year of sale
• 44.95 USD

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 9-59, Set 455, Folder 20)

• Literature/Schematics (2)
• - - Manufacturers Literature (Zenith Service Manual "Royal 200" All Transistor Portable Radio)

• Literature/Schematics (3)
• Beitman Radio Diagrams, Vol. 19, 1959 (Page 184)

• Literature/Schematics (4)
• Zenith Transistor Radios (Page 25)

• Author
• Model page created by Egon Penker. 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