• País
• Gran Bretaña (GB)

• Fabricante / Marca
• McMichael Radio Ltd.; Slough

• Año
• 1932

• Categoría
• Radio - o Sintonizador pasado WW2

• Radiomuseum.org ID
• 239538

• • alternative name: McMichael, Leslie

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

• Numero de valvulas
• 4

• Válvulas
• PM12A PM1HL PM1HL PM2A

• Principio principal
• RFS con reacción (regenerativo); 2 Etapas de AF

• Número de circuitos sintonía
• 2 Circuíto(s) AM

• Gama de ondas
• OM y OL

• Tensión de funcionamiento
• Baterías recargables o pilas

• Altavoz
• Altavoz magnético (sin saber mas)

• de Radiomuseum.org
• Modelo: Duplex Four Type S - McMichael Radio Ltd.; Slough

• Anotaciones

• The schematic didn't originally have valves/tubes listed. Other valve/Tube arrangements are likely.
  Volume control varies SG valve (tube) filament and thus gain and is also the on/off push switch. Grid bias by series resistor in HT- so likely a portable set.

  MW is labelled "SW".

  Similar versions (similar TRF, same case, same Bakelite speaker panel moudling)

  The Super Range Portable type A has no tuning scale, just a 0 to 100 logging drum, though the first versions used the fretwork of the Super Screened Portable Four.

  The main differences from the last version Super Range Portable Four type C is the style of tuning scale and removal of the Grid Bias ("C") battery.

  Aug 1934 "Supplement to the Broadcaster" states regarding the 1933 SMC Duplex Four Portable: "The earler models are very similar." The SMC replaces the Triode with a Pentode and "Reed" speaker with a Moving coil.

• Autor
• Modelo creado por Michael Watterson. Ver en "Modificar Ficha" los participantes posteriores.

• Otros modelos

• Donde encontrará 183 modelos, 123 con imágenes y 120 con esquemas.
  Ir al listado general de McMichael Radio Ltd.; Slough