FM/AM 2-Band Digital radio HRD-104

Hanrongda Electronic Co. Ltd.; Shenzhen

  • Anno
  • 2019 ?
  • Categoria
  • Radio (o sintonizzatore del dopoguerra WW2)
  • Radiomuseum.org ID
  • 349686

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 Specifiche tecniche

  • Numero di transistor
  • 2
  • Semiconduttori
  • Principio generale
  • DSP, Processore di segnale digitale
  • Gamme d'onda
  • Onde medie (OM) e MF (FM).
  • Tensioni di funzionamento
  • Batterie / presa di alimentazione supplementare / AAA: 2 x 1.5 / DC IN 5 Volt
  • Altoparlante
  • AP magnetodinamico (magnete permanente e bobina mobile) / Ø 4 cm = 1.6 inch
  • Potenza d'uscita
  • 0.2 W (indistorta)
  • Materiali
  • Plastica (non bachelite o catalina)
  • Radiomuseum.org
  • Modello: FM/AM 2-Band Digital radio HRD-104 - Hanrongda Electronic Co. Ltd.;
  • Forma
  • Tascabile (portatile molto piccola), < 20 cm
  • Dimensioni (LxAxP)
  • 60 x 100 x 15 mm / 2.4 x 3.9 x 0.6 inch
  • Annotazioni
  • The HanRongDa HRD-104 pocket radio features AM and FM bands, clock, alarm and sleep timer.

    Main features

    • FM: 64 - 108 MHz
      • Sensitivity: 8 uV
    • AM: 522 - 1710 kHz (9 kHz steps), 520 - 1710 kHz (10 kHz steps), selectable
      • Sensitivity: 3mV/m
    • Manual and Automatic tuning
    • 56 Memory pressets
    • USB port for a 5 VDC external power adapter 
    • 3.5 mm jack for stereo earphones (recommended 32 Ohm)

    Brief technical details

    There are at least two chassis versions, featuring two different designs.

    One of them has the PCB with reference "HRD-104B-6958" and uses the AKC6958 DSP chip (IC1)  managed by a MC96F6408AL MCU chip.(IC2).

    The other one covered here has a PCB with reference "HRD-104B 1.0MM-FR4  2022-10-26".

    The design is based around a KT0913L-D4 AM/FM DSP, stereo, with integrated earphones driver, IC (U1). The FM antenna signal is shaped by a RF front-end using a 2SC3356-R25 NPN transistor (Q1). The built-in speaker is driven by a 8002B 2W Class-AB single channel audio amplifier configured in BTL mode, IC (U4).

    The MCU IC (U2) is unmarked.

    The power supply uses a 65Z5 (XC6206P302MR) 3.0V LDO regulator to bring the USB 5V down to acceptable operating levels. A Y2 (SS8550) PNP transistor (Q2) acts as a power switch managed by the MCU. (U2).

     

  • Autore
  • Modello inviato da Jose Mesquita. Utilizzare "Proponi modifica" per inviare ulteriori dati.

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Il modello FM/AM 2-Band Digital radio fa parte delle collezioni dei seguenti membri.

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