Royal 500RD Ch= 8AT40Z2

Zenith Radio Corp.; Chicago, IL

  • Année
  • 1958
  • Catégorie
  • Radio - ou tuner d'après la guerre 1939-45
  • Radiomuseum.org ID
  • 172191
    • alternative name: Chicago Radio Lab

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 Spécifications techniques

  • No. de transistors
  • 8
  • Principe général
  • Super hétérodyne avec étage HF; FI/IF 455 kHz; 2 Etage(s) BF
  • Circuits accordés
  • 5 Circuits MA (AM)
  • Gammes d'ondes
  • PO uniquement
  • Tension / type courant
  • Piles sèches / AA: 4 x 1.5 Volt
  • Haut-parleur
  • HP dynamique à aimant permanent + bobine mobile / Ø 2.75 inch = 7 cm
  • Matière
  • Plastique moderne (pas de bakélite, ni de catalin)
  • De Radiomuseum.org
  • Modèle: Royal 500RD Ch= 8AT40Z2 - Zenith Radio Corp.; Chicago,
  • Forme
  • Portable, appareil de poche. Taille < 20cm
  • Remarques
  • The Zenith Royal 500D family has two chassis, four transistor label colors, and two cabinet styles. The four chassis, in chronological order, are summarized in the following table. Note that only about 2,000 Type 1 chassis were made.

    Type Chassis

    Dot/
    Label
    Color

    RF Mix Osc 1st
    IF
    2nd
    IF
    Det Drvr Out
    x2
    Man
    1 8AT40Z2 Black

    121-63
    2N544

    121-62
    2N411
    121-65
    2N409
    121-66
    2N409
    121-66
    2N409
    103-19 1N87G 121-64
    2N407
    121-61
    2N407
    RCA
    2 8AT40Z2 Red "" "" "" 121-73 121-74 "" "" "" ""
    3 8AT40Z2 Green or -78 '' '' '' '' '' '' '' ''
    4 8AT40 Blue 121-101 2N544 121-103 2N411 121-102 2N409 121-104 2N409 121-105 2N409 "" 121-106 2N407 121-107 2N407 Syl

    The earlier first cabinet style had "LONG DISTANCE" stamped below the engraved "ZENITH" brand on the front. Initially, the colors were black and maroon. Later colors added were pink, tan, and white.

    The later second cabinet style added a black "500D" under the Zenith emblem (smaller than the first emblem) on the metal faceplate. A new inverted cone speaker was introduced, with the speaker grill also pushed out to accommodate the inverted cone. Not all 500D radios used the new speaker. The colors were black, maroon, and white.

    The earlier cabinet was used with Types 1, 2, and 3 chassis. The later cabinet was used with Types 2, 3, and 4 chassis.

    The five Royal 500D models are 500RD, 500WD, 500YD, 500D Ch= 8AT40Z2, and 500D Ch= 8AT40.

    Umfassende Beschreibung in Deutsch.

  • Schémathèque (2)
  • -- Original-techn. papers. (Antique Radio Magazine n.61, June-July 2004, page 53 (Ita/Eng). Free at Aldo Andreani's website.)
  • Schémathèque (3)
  • -- Original-techn. papers. (Zenith Royal 500 Transistor Radios "Owl Eyes" booklet, Eldon A. Horton, pages 1-20.)
  Radio a transistor tascabili americane: Zenith Royal 500 “Owl Eyes” (Per cortesia di L.Salvatore/ARM) 3327 KB
  • Documents sur ce modèle
  • Auteur
  • Modèle crée par Egon Penker. Voir les propositions de modification pour les contributeurs supplémentaires.

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Le modèle Royal 500RD fait partie des collections des membres suivants.

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