• Año
  • 1917–1925
  • Categoría
  • Altavoz, cascos o auricular
  • Radiomuseum.org ID
  • 229256

 Especificaciones técnicas

  • Gama de ondas
  • - no hay
  • Tensión de funcionamiento
  • Baterías recargables o pilas / 6 Volt
  • Altavoz
  • Corneta / Ø 3.5 inch = 8.9 cm
  • Material
  • Metálico
  • de Radiomuseum.org
  • Modelo: Motor Dictograph - Dictograph Products Co.
  • Forma
  • Formas varias descritas en notas aparte.
  • Ancho, altura, profundidad
  • 0 x 10 x 0 inch / 0 x 254 x 0 mm
  • Anotaciones
  • The "Motor Dictograph" is a system for closed-cabin driver/passenger communication and was first displayed in the 1917 Salon and Shows.

    It comprises a carbon microphone built into the passenger cabin, and a horn speaker which is mounted near the driver seat.

    The horn has a height of 10"; the typeplate on its base reads 6 Volt - 2 Amp.

     

    It was still in use in 1925, when a Minerva AF was equipped with the system.

  • Mencionado en
  • Automotive Industries, Volume 53, 1919, P.396
  • Documentación / Esquemas (1)
  • Radio Horn Speaker Encyclopedia, Paul, 1986

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