Silvertone 1722X

Sears, Roebuck & Co.; Chicago (IL)

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  • Année
  • 1933/1934
  • Catégorie
  • Radio - ou tuner d'après la guerre 1939-45
  • Radiomuseum.org ID
  • 55924
    • Brand: Silvertone

Cliquez sur la vignette du schéma pour le demander en tant que document gratuit.

 Spécifications techniques

  • No. de tubes
  • 12
  • Principe général
  • Super hétérodyne avec étage HF; FI/IF 175 kHz
  • Gammes d'ondes
  • GO, OC et Police (Maritime)
  • Tension / type courant
  • Alimentation Courant Alternatif (CA) / 110 Volt
  • Haut-parleur
  • 2 HP
  • Matière
  • Boitier en bois
  • De Radiomuseum.org
  • Modèle: Silvertone 1722X - Sears, Roebuck & Co.; Chicago
  • Forme
  • Console de forme générique
  • Remarques
  • The two speakers are 8 and 12 inch. There is also the same cabinet and probably chassis as "revised" model Silvertone 1722 and there is a model Silvertone 1722 without revision. We do not know yet the differences between the revised 1722 / 1732 and the 1722X. Rider's shows all three seperately. One 6B7 serves for the "Flasher", the other for the AVC. The 56 is the oscillator - with problematic short wave capabilities. Push-pull output. The revision is mainly for a better short wave sensibility with a 78 resistance-capacity coupled IF stage added and the 37 detector and 37 first audio replaced by a 85 tube which does the same functions. The ON-OFF-switch is a duplex for allowing shorting out the added IF when selecting the broadcast band. Rider's shows us 3 separate schematics - and we reflect that with 3 models.
  • Source extérieure
  • Ernst Erb
  • Source du schéma
  • Rider's Perpetual, Volume 4 = ca. 1934 and before
  • Schémathèque (1)
  • Riders 4-29, 30

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