Columbus 5A

Columbus (Brand); Radio Centre Ltd.; Wellington

Datos
Foro
Imágenes
Colecciones

  • Año
  • 1951 ?
  • Categoría
  • Radio - o Sintonizador pasado WW2
  • Radiomuseum.org ID
  • 304547

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

 Especificaciones técnicas

  • Numero de valvulas
  • 5
  • Principio principal
  • Superheterodino en general; 2 Etapas de AF
  • Número de circuitos sintonía
  • 6 Circuíto(s) AM
  • Gama de ondas
  • OM (onda media) solamente
  • Tensión de funcionamiento
  • Red: Corriente alterna (CA, Inglés = AC) / 50Hz, 230 Volt
  • Altavoz
  • Altavoz electrodinámico (bobina de campo) / Ø 5 inch = 12.7 cm
  • Material
  • Madera
  • de Radiomuseum.org
  • Modelo: Columbus 5A - Columbus Brand; Radio Centre
  • Forma
  • Sobremesa de tamaño mediano sin botonera <= 35 cm. (Incluso portables pero sólo con alimantación por red).
  • Anotaciones

  • Columbus Model 5A

    The model 5 series was in production for a few years and was released in four different variants with two valve lineups.  The models were the 5, 5A, 5B and 5M.

    The model 5 was originally specified to use an octal 6K6** output valve, although its likely that most have a 6V6.  There is also a release note stating it would most likely change to be a 6AQ5 in time.  It also showed an octal 6X5GT rectifier.  All subsequent models have a full miniature valve lineup.  The early schematic showing octal output and rectifier valves has no date or drawing number and may be a draft drawing, or an unofficial release to meet requests from service departments around the country.  A subsequently released 'Model 5' drawing dated August 1951, almost a year after the release note, shows all miniature valves.  Its unclear if RCNZ was referring to the original model 5 or all available variants at that time (although not all variants had the shown loop antenna).

    The later versions also had a better spread of the frequency band as can be seen on the dial scales.

    The model 5B has a wider dial, with a narrower speaker grill to compensate, and uses a standard aerial coil rather than the loop aerial the other models have.

  • Autor
  • Modelo creado por Stuart Irwin. Ver en "Modificar Ficha" los participantes posteriores.

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