Silvertone 1670 Early (osc 58)

Sears, Roebuck & Co.; Chicago (IL)

Datos
Foro
Imágenes
Colecciones

  • Año
  • 1933
  • Categoría
  • Radio - o Sintonizador pasado WW2
  • Radiomuseum.org ID
  • 55901
    • Brand: Silvertone

Haga clic en la miniatura esquemática para solicitarlo como documento gratuito.

 Especificaciones técnicas

  • Numero de valvulas
  • 11
  • Principio principal
  • Superheterodino en general; ZF/IF 175 kHz
  • Número de circuitos sintonía
  • 6 Circuíto(s) AM
  • Gama de ondas
  • OM (onda media) solamente
  • Tensión de funcionamiento
  • Red: Corriente alterna (CA, Inglés = AC) / 110-120 Volt
  • Altavoz
  • Altavoz electrodinámico (bobina de campo) / Ø 10 inch = 25.4 cm
  • Material
  • Madera
  • de Radiomuseum.org
  • Modelo: Silvertone 1670 [Early ] - Sears, Roebuck & Co.; Chicago
  • Forma
  • Consola baja, patas más cortas del 50%.
  • Ancho, altura, profundidad
  • 24 x 40.3 x 13.5 inch / 610 x 1024 x 343 mm
  • Anotaciones
  • This model Silvertone 1670 was probably first available with only one tuned IF with 3 tuned circuits as "Early", schematic "A" in Rider's page 6-17 and probably facing difficulties with the second IF only being an untuned IF transformer. On page 6-18 can be found a schematic "B" as "Late" with a second tuned IF transformer with two tuned circuits for more selectivity. Most probably there was no other change and clients did not know a change. First production used a 58 oscillator, the "Late" a 224A oscillator. See the common pages 6-16 and 6-19. 3-gang tuning condenser, hum bucking coil on loudspeaker (together with the speaker field coil). The model 1650 is technically identical but uses only one tube 280, thus having 10 tubes. Pre-War Consoles by Mark V. Stein brings a wrong picture on page 174, confusing with the Silvertone 1641.
  • Precio durante el primer año
  • 49.50 $
  • Ext. procedencia de los datos
  • Ernst Erb
  • Referencia esquema
  • Rider's Perpetual, Volume 6 = 1935 and before

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