Royal 500 Ch= 7ZT40Z1

Zenith Radio Corp.; Chicago, IL

  • Anno
  • 1956/1957
perfect model
  • Categoria
  • Radio (o sintonizzatore del dopoguerra WW2)
  • Radiomuseum.org ID
  • 267472
    • alternative name: Chicago Radio Lab

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 Specifiche tecniche

  • Numero di transistor
  • 7
  • Principio generale
  • Supereterodina (in generale); ZF/IF 455 kHz; 2 Stadi BF
  • N. di circuiti accordati
  • 5 Circuiti Mod. Amp. (AM)
  • Gamme d'onda
  • Solo onde medie (OM).
  • Tensioni di funzionamento
  • Batterie a secco / AA: 4 x 1.5 Volt
  • Altoparlante
  • AP magnetodinamico (magnete permanente e bobina mobile) / Ø 2.75 inch = 7 cm
  • Potenza d'uscita
  • 0.1 W (0.18 W max.)
  • Materiali
  • Plastica (non bachelite o catalina)
  • Radiomuseum.org
  • Modello: Royal 500 Ch= 7ZT40Z1 - Zenith Radio Corp.; Chicago,
  • Forma
  • Tascabile (portatile molto piccola), < 20 cm
  • Dimensioni (LxAxP)
  • 3.5 x 5.75 x 1.5 inch / 89 x 146 x 38 mm
  • Annotazioni
  • The Zenith Royal 500 is a battery operated 7 transistor portable BC band radio. The tuning range is 540-1600kHz. The first 4 models are aluminum chassis, hand wired, point-to-point, and have 4 different chassis numbers due to limited quantities of transistors from manufacturing suppliers. The later 4 models are PCB and included vernier tuning. Chassis have chassis numbers along with a Color Code Dot in the battery compartment with labels in the same Color Code ink.

    Year Chassis Number Chassis Type Transistor Source Color Code Dot Cabinet Colors Vernier Tuning
    55/56 7XT40 Circuit #1 Hand Wired Sylvania
    (NPN)
    Black R,Y N
    55/56 7XT40 Circuit #2 Hand Wired Sylvania
    (NPN)
    Maroon R,Y N
    55/56 7XT40Z Hand Wired Raytheon
    (PNP)
    Red R,Y N
    55/56 7XT40Z1 Hand Wired Texas Instr. (NPN & PNP) Green R,Y N
    56/57 7ZT40 PCB Sylvania
    (NPN)
    Magenta R,W,Y Y
    56/57 7ZT40Z1 PCB Texas Instr.
    (NPN & PNP)
    Brown R,W,Y Y
    57/58 7ZT40 "Revised" PCB Sylvania
    (NPN)
    Magenta L,R,V,W,Y Y
    57/58 7ZT40Z PCB Raytheon
    (PNP)
    Orange L,R,V,W,Y Y

    Color Codes:
    L = Tan/Beige (rare); R = Maroon/Burgundy/Garnet Red (semi-transparent); V = Tango Pink (rare); W = White; Y = Black/Ebony.

  • Peso netto
  • 1 lb 3 oz (1.187 lb) / 0.539 kg
  • Prezzo nel primo anno
  • 75.00 USD
  • Letteratura / Schemi (1)
  • - - Manufacturers Literature (Zenith Service Manual "Royal 500" All transistor Portable Radio Chassis 7ZT40 7ZT40Z1)
  Radio a transistor tascabili americane: Zenith Royal 500 “Owl Eyes” (Per cortesia di L.Salvatore/ARM) 3327 KB
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