Royal 500D Ch= 8AT40

Zenith Radio Corp.; Chicago, IL

  • Year
  • 1958/1959
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 69088
    • alternative name: Chicago Radio Lab

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

 Technical Specifications

  • Number of Transistors
  • 8
  • Main principle
  • Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)
  • Tuned circuits
  • 6 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 2.75 inch = 7 cm
  • Power out
  • 0.1 W (unknown quality)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: Royal 500D Ch= 8AT40 - Zenith Radio Corp.; Chicago,
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 3.5 x 5.75 x 1.5 inch / 89 x 146 x 38 mm
  • Notes
  • This is the "late" model of the Zenith 500D series and uses chassis 8AT40 as presented in the Zenith Supplementary Service Manual.  These "late" models are identified by the "500D" on the front of the radio.  Cabinet colors are black, white and maroon.

    The "early" models of the Zenith 500D series are shown in the following table.

    Model Number Chassis Cabinet Color
    500RD 8AT40Z2 Maroon
    500WD 8AT40Z2 White
    500YD 8AT40Z2 Black

     

  • Net weight (2.2 lb = 1 kg)
  • 0.6 kg / 1 lb 5.1 oz (1.322 lb)
  • Price in first year of sale
  • 75.00 $
  • External source of data
  • Ernst Erb
  • Literature/Schematics (1)
  • Transistor Radios 1954-68 (Antique Radio Magazine n.61, June-July 2004, page 53 (Ita/Eng). Free at Aldo Andreani's website.)
  Radio a transistor tascabili americane: Zenith Royal 500 “Owl Eyes” (Per cortesia di L.Salvatore/ARM) 3327 KB
  • Documents regarding this model

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