• Année
  • 1923/1924
perfect model
  • Catégorie
  • Radio - ou tuner d'après la guerre 1939-45
  • Radiomuseum.org ID
  • 49892
    • alternative name: Operadio Mfg,

 Spécifications techniques

  • No. de tubes
  • 6
  • Circuits accordés
  • 1 Circuits MA (AM)
  • Gammes d'ondes
  • PO uniquement
  • Tension / type courant
  • Piles sèches
  • Haut-parleur
  • Cornet ou pavillon
  • Matière
  • Cuir / canvas / plastique mais autre matériel en dessous!
  • De Radiomuseum.org
  • Modèle: 2 - Operadio Corp.; St. Charles IL
  • Forme
  • Portative > 20 cm (sans nécessité secteur)
  • Remarques
  • The original tube line up has to be UV199 if this model has arrived in 1923:

    The "Saga of the vacuum tube" by Tyne tells us on page 314: "In April 1925 the UV199 was superseded by the UX199, announced August 1, 1925. Production continued up to 1931, although after 1927 few new receivers were built to use it. Nickel-plated contact pins were introduced in 1927."

    After some time the UX tubes were noted only by the numbers and a bit later only by the last two digits. The UV199 was introduced in December 1922, the same time as the UV201A.

  • Prix de mise sur le marché
  • 190.00 $
  • Source extérieure
  • Ernst Erb
  • Schémathèque (2)
  • Radio Broadcast, Jul. 1924, p. 274

 Collections | Musées | Littérature

Collections

Le modèle 2 fait partie des collections des membres suivants.

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