Silvertone 1722X

Sears, Roebuck & Co.; Chicago (IL)

Dati
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  • Anno
  • 1933/1934
  • Categoria
  • Radio (o sintonizzatore del dopoguerra WW2)
  • Radiomuseum.org ID
  • 55924
    • Brand: Silvertone

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 Specifiche tecniche

  • Numero di tubi
  • 12
  • Principio generale
  • Supereterodina con stadio RF; ZF/IF 175 kHz
  • Gamme d'onda
  • Onde medie (OM), corte (OC) e tropicali/polizia.
  • Tensioni di funzionamento
  • Alimentazione a corrente alternata (CA) / 110 Volt
  • Altoparlante
  • 2 altoparlanti
  • Materiali
  • Mobile in legno
  • Radiomuseum.org
  • Modello: Silvertone 1722X - Sears, Roebuck & Co.; Chicago
  • Forma
  • Console di qualsiasi tipo
  • Annotazioni
  • 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.
  • Fonte esterna dei dati
  • Ernst Erb
  • Riferimenti schemi
  • Rider's Perpetual, Volume 4 = ca. 1934 and before
  • Letteratura / Schemi (1)
  • Riders 4-29, 30

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