RK631

• Paese
• Germania

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

• Anno
• 1992 ?

• Categoria
• Radio (o sintonizzatore del dopoguerra WW2)

• Radiomuseum.org ID
• 128683

• Immagini
• Schemi

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• Numero di transistor
• 4

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

• Principio generale
• Supereterodina (in generale); ZF/IF 460/10700 kHz

• Gamme d'onda
• Onde medie (OM), lunghe (OL), piú di 2 gamme di onde corte (> 2 x OC) e MF (FM).

• Tensioni di funzionamento
• Batterie / presa di alimentazione supplementare / AA 2 x 1.5 / DC 3 Volt

• Altoparlante
• AP magnetodinamico (magnete permanente e bobina mobile) / Ø 5 cm = 2 inch

• Potenza d'uscita
• 0.2 W (qualità ignota)

• Materiali
• Plastica (non bachelite o catalina)

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

• Forma
• Tascabile (portatile molto piccola), < 20 cm

• Dimensioni (LxAxP)
• 140 x 105 x 37 mm / 5.5 x 4.1 x 1.5 inch

• Annotazioni

• 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 netto
• 0.4 kg / 0 lb 14.1 oz (0.881 lb)

• Fonte dei dati
• -- Original prospect or advert

• Letteratura / Schemi (1)
• -- Original-techn. papers.

• Autore
• Modello inviato da Martin Bösch. Utilizzare "Proponi modifica" per inviare ulteriori dati.

• Altri modelli

• In questo link sono elencati 2521 modelli, di cui 2118 con immagini e 1334 con schemi.
  Elenco delle radio e altri apparecchi della Siemens (& Halske, -Schuckert Werke SSW, Electrogeräte); Berlin, München