• Año
  • 1937/1938
  • Categoría
  • Radio - o Sintonizador pasado WW2
  • Radiomuseum.org ID
  • 42056
    • Brand: Musaphonic

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

 Especificaciones técnicas

  • Numero de valvulas
  • 7
  • Principio principal
  • Superheterodino en general; ZF/IF 465 kHz
  • Gama de ondas
  • OM, OC y banda Pesquera (policia USA)
  • Tensión de funcionamiento
  • Red: Corriente alterna (CA, Inglés = AC) / 115-125 Volt
  • Altavoz
  • Altavoz electrodinámico (bobina de campo) / Ø 8 inch = 20.3 cm
  • Material
  • Madera
  • de Radiomuseum.org
  • Modelo: F-70 - General Electric Co. GE;
  • Forma
  • Sobremesa apaisado (tamaño grande).
  • Ancho, altura, profundidad
  • 20.75 x 10.6875 x 9.4375 inch / 527 x 271 x 240 mm
  • Anotaciones
  • Tuning Range: 540 to 18,000 kc.

  • Ext. procedencia de los datos
  • Ernst Erb
  • Referencia esquema
  • Rider's Perpetual, Volume 8 = 1937 and before
  • Documentación / Esquemas (3)
  • General Electric Folder 1000M 9-37 for 1938.

 Colecciones | Museos | Literatura

Colecciones

El modelo F-70 es parte de las colecciones de los siguientes miembros.

 Forum

Contribuciones en el Foro acerca de este modelo: General Electric Co.: F-70

Hilos: 1 | Mensajes: 13

Problems with General Electric F70 (1937) 1 Can somebody help solving this problem? I have restaured this radio (superheterodyne, 7 tubes, 3 bands). It worked well initially and suddenly stopped working. The radio tunes to a - only a few- frequencies bu only a BRRR noise is heard on the loudspeaker. - All the tubes have been checked and seem ok. - Just in case I replaced the converter (6A8). No improvement - Surprisingly, Injecting a signal with a signal generator (RF/AF)(Heathkit RF1) at the antenna, the AF is clearly heard at the loudspeaker. Changing the RF in the generator the radio tunes well at all frequencies in the 3 bands and AF is clearly heard. - IF is 465 kHz. Injecting this frequency at the antenna, AF is heard at the loudspeaker AT ALL positions of the tuning condenser. I do not understand why the radio seems to work well with the signal genarator and not with the external stations. The reception here is strong. Thanks in advance for your help León Shanghai, PR China

Leon Ouziel Canals, 01.May.08

Weitere Posts (13) zu diesem Thema.