• Anno
  • 1917–1925
  • Categoria
  • Altoparlante, cuffia o auricolare
  • Radiomuseum.org ID
  • 229256

 Specifiche tecniche

  • Gamme d'onda
  • - senza
  • Tensioni di funzionamento
  • Batterie (di accumulatori e/o a secco) / 6 Volt
  • Altoparlante
  • Tromba / Ø 3.5 inch = 8.9 cm
  • Materiali
  • Mobile di metallo
  • Radiomuseum.org
  • Modello: Motor Dictograph - Dictograph Products Co.
  • Forma
  • Diverse forme (descritte nelle note).
  • Dimensioni (LxAxP)
  • 0 x 10 x 0 inch / 0 x 254 x 0 mm
  • Annotazioni
  • 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.

  • Bibliografia
  • Automotive Industries, Volume 53, 1919, P.396
  • Letteratura / Schemi (1)
  • Radio Horn Speaker Encyclopedia, Paul, 1986
  • Autore
  • Modello inviato da Mark Hippenstiel. Utilizzare "Proponi modifica" per inviare ulteriori dati.

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