• Année
  • 1917–1925
  • Catégorie
  • Haut-parleur, casque ou écouteur
  • Radiomuseum.org ID
  • 229256

 Spécifications techniques

  • Gammes d'ondes
  • - sans
  • Tension / type courant
  • Piles (rechargeables ou/et sèches) / 6 Volt
  • Haut-parleur
  • Cornet ou pavillon / Ø 3.5 inch = 8.9 cm
  • Matière
  • Boitier métallique
  • De Radiomuseum.org
  • Modèle: Motor Dictograph - Dictograph Products Co.
  • Forme
  • Formes diverses décrites en notes
  • Dimensions (LHP)
  • 0 x 10 x 0 inch / 0 x 254 x 0 mm
  • Remarques
  • 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.

  • Littérature
  • Automotive Industries, Volume 53, 1919, P.396
  • Schémathèque (1)
  • Radio Horn Speaker Encyclopedia, Paul, 1986

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