Receptor RD-55

CRT, Continental Radio e Televisão; São Paulo

Datos
Foro
Imágenes
Colecciones

  • Año
  • 1955
  • Categoría
  • Radio - o Sintonizador pasado WW2
  • Radiomuseum.org ID
  • 295247

Haga clic en la miniatura esquemática para solicitarlo como documento gratuito.

 Especificaciones técnicas

  • Numero de valvulas
  • 5
  • Principio principal
  • Superheterodino en general; ZF/IF 465 kHz
  • Gama de ondas
  • OM y OC
  • Tensión de funcionamiento
  • Bateria recargable / 6 Volt
  • Altavoz
  • Altavoz dinámico (de imán permanente) / Ø 6 inch = 15.2 cm
  • de Radiomuseum.org
  • Modelo: Receptor RD-55 - CRT, Continental Radio e
  • Anotaciones

  • With the coil assembly MS-55, Continental Rádio e Televisão planned to develop a family of radio receivers to cover all modes of power supplies opperation - see models C-6 CA, C-6 Pilhas and CB-55.

    However the last model (RD-55), a table top radio that operates with car battery, needed a different chassi and consequently different wood cabinet. That was due to high level of electric noise generated by the vibrator, what demanded some chassi shielding in order to keep the receiver sensitivity. So, although this model uses the MS-55 coils, it was too different to be considered belonging to the same kit family.

    The perception is that, in local market, car battery powered table radios were preferred over dry batteries models because, on long run, they were more echonomic and had more output power.

     

    Model RD-55

    MW SW table top radio, car battery powered, developed for farms and others non-electrified areas. Supplied in kit format.

    6V6 plate current was reduced (1K cathode resistor) otherwise the +B voltage was too low, due to the power supply limitations.

    MS-55 CRT coils

    Ac transformer: 2x 220V / 50 mA

    Output transformer: primary 5K Ohms

    CHRF coils: 20 turns, # 14 wire, 10 mm diameter

  • Documentación / Esquemas (1)
  • - - Manufacturers Literature
  • Autor
  • Modelo creado por Antonio Rabitti. Ver en "Modificar Ficha" los participantes posteriores.

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