RK631

• País
• Alemania

• Fabricante / Marca
• Siemens (& Halske, -Schuckert Werke SSW, Electrogeräte); Berlin, München

• Año
• 1992 ?

• Categoría
• Radio - o Sintonizador pasado WW2

• Radiomuseum.org ID
• 128683

• Imágenes
• Esquemas

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

• Numero de transistores
• 4

• Semiconductores
• 2SK212 2SC3330 2SC2839 2SK212 TA8164 TA7331 SD116 1N60 1N4148

• Principio principal
• Superheterodino en general; ZF/IF 460/10700 kHz

• Gama de ondas
• OM, OL, más de dos OC y FM

• Tensión de funcionamiento
• Pilas + jack (etc.) para alimentación externa. / AA 2 x 1.5 / DC 3 Volt

• Altavoz
• Altavoz dinámico (de imán permanente) / Ø 5 cm = 2 inch

• Potencia de salida
• 0.2 W (unknown quality)

• Material
• Plástico moderno (Nunca bakelita o catalina)

• de Radiomuseum.org
• Modelo: RK631 - Siemens & Halske, -Schuckert

• Forma
• Portátil de bolsillo , menor de 20cm.

• Ancho, altura, profundidad
• 140 x 105 x 37 mm / 5.5 x 4.1 x 1.5 inch

• Anotaciones

• The portable Siemens RK631 G4 FM/MW/LW/SW world travel receiver is identical to the Sangean SG 600L.

  Main features:

  • Receiver bands
    • FM: 87.5-108 MHz
      • Integrated AFC 
    • LW: 150-281 kHz
    • MW: 522-1710 kHz
    • SW
      • SW1: 5.85-6.20 MHz (49m)
      • SW2: 7.10-7.5 MHz (41m)
      • SW3: 9.45-9.90 MHz (31m)
      • SW4: 11.60-12.10 MHz (25m)
      • SW5: 13.55-13.85 MHz (21m)
      • SW6: 15.10-15.60 MHz (19m)
      • SW7: 17.45-18.15 MHz (16m)
  • Tuning indicator
  • 6 mm external power socket (negative inner pole) for a 3 volts DC mains power supply
  • 3.5 mm external socket for headphones

  Technical details:

  The Receiver is designed around the TA8164P AM/FM Monaural Tuner (IC1) and the TA7331P Audio Power Amp (IC2).

  Accoding to the Toshiba datasheets, the TA7331P is able to deliver 200 mW over the internal 4 Ohm loudspeaker when working at 3 V.

  The FM band is handled directly by the TA8164P where the antenna signal goes thru a PFWB4 BPF (CF1). The FM AFC circuit is built around the RF transformer T3 (FM Det Quad), 2SC2839E Q3, 2SK212E Q4, 1N60 (D2, D3), 1N4148 (D4), and a SD116-T2 AFC varicap (D6). 

  To offer increased sensitivity over the seven SW bands, a discrete RF Front-End was included in the design, based on one 2SK212E N-Channel JFET (Q1).

  The FM IF uses 10.70 MHz as seen on the E10.7A IF filter (CF2), and the AM IF uses 460KHz as seen on the SFU460 IF filter (CF3).

  The tuning LED (D5) is driven by a 2SC3330T (Q2) that gets the signal from the TA8164P at pin 5, integrated by a 22uF cap (C30), thru a 1N60 diode (D1).

  There are two versions of the cabinet:

  • RK631 G4: black cabinet with gold printing
  • RK631 G6: grey cabinet with white printing

  Gross weight in original packing 450 gram

• Peso neto
• 0.4 kg / 0 lb 14.1 oz (0.881 lb)

• Procedencia de los datos
• -- Original prospect or advert

• Documentación / Esquemas (1)
• -- Original-techn. papers.

• Autor
• Modelo creado por Martin Bösch. Ver en "Modificar Ficha" los participantes posteriores.

• Otros modelos

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