• Paese
• Cina (Repubblica Popolare Cinese)

• Produttore / Marca
• Tecsun 德生通用电器制造有限公司 Tecsun General Electric Manufacturing Co., Ltd; Dongguan (Guangdong, SC)

• Anno
• 2020 ?

• Categoria
• Radio (o sintonizzatore del dopoguerra WW2)

• Radiomuseum.org ID
• 331953

Clicca sulla miniatura dello schema per richiederlo come documento gratuito.

• Numero di transistor
• A semiconduttori.

• Semiconduttori
• Si4735

• Principio generale
• DSP, Processore di segnale digitale

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

• Tensioni di funzionamento
• Batteria di accumulatori, per tutto (es. autoradio, radio amatoriali) / Li-ion: 3.7 / Ext DC 5 Volt

• Altoparlante
• AP magnetodinamico (magnete permanente e bobina mobile)

• Potenza d'uscita
• 0.2 W (max.)

• Materiali
• Plastica (non bachelite o catalina)

• Radiomuseum.org
• Modello: FM/LW/MW/SW-SSB DSP Receiver PL-330 - Tecsun 德生通用电器制造有限公...

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

• Dimensioni (LxAxP)
• 139 x 85 x 26 mm / 5.5 x 3.3 x 1 inch

• Annotazioni

• Tecsun PL-330 is a DSP radio featuring AM, SSB and synchronous detection, direct frequency entry, manual scan, auto scan, Auto Tuning Storage (ATS), Enhanced Tuning Mode (ETM+) to create time-specific memories, clock, sleep timer, alarm, and FM stereo over headphones.

  Main specifications

  • Frequency coverage
    • LW: 153-513 kHz
      • Tuning steps: 9 kHz, 1 kHz
      • Sensitivity: <10 mV/m (26 dB S/N)
      • Bandwidth: 2.5, 3.5, 9.0 kHz
    • MW: 520-1710 / 522-1620 kHz
      • Tuning steps:
        • 522-1620: 9 kHz, 1 kHz
        • 520-1710: 10 kHz, 1 kHz
      • Sensitivity: <1 mV/m (26 dB S/N)
      • Bandwidth: 2.5, 3.5, 9.0 kHz
    • SW: 1711-29999 kHz
      • Tuning steps:
        • AM: 5 kHz, 1 kHz
        • SSB (USB,LSB): 5 kHz, 1 kHz, 10 Hz
        • Sync detection: 5 kHz, 1 kHz, 100 Hz 
      • Sensitivity: <20 µV (26 dB S/N)
      • Bandwidth: 
        • AM: 2.5, 3.5, 5.0 kHz
        • SSB: 0.5, 1.2, 2.2, 3.0, 4.0 kHz
    • FM: 64-108 / 76-108 / 87-108 / 88-108 MHz
      • Tuning steps: 100 kHz, 10 kHz
      • Sensitivity: <3 µV (30 dB S/N)
  • Selectivity: >60 dB all bands
  • Sync Detection Lock Range: +/- 1 kHz
  • IF Frequency (DSP Low-IF): 
    • AM: 45 kHz
    • FM: 128 kHz
  • 850 memories.
  • Speaker: 0.25 W, 8 Ω
  • Earphone Jack: 32 to 150 Ω, 3.5 mm, Stereo
  • Power Supply:
    • 3.7V BL-5C Li-ion battery
      • Quiescent current
        • FM/MW/LW: <25 mA
        • SW: <45 mA
      • Stand-by: < 90 µA
    • External DC 5V 500 mA thru USB charging port

  Non documented features

  Owners and testers have reported publicly in the forums that "hidden features" are found, starting at firmware version 3302 and above, similar to the ones found in the "big brother" Tecsun PL-990. Depending on the firmware version and production batches, these may already be included and documented. Among them, here are some interesting ones:

  • Display Firmware version: Radio Off, press and hold "VF/VM" key and look at the upper right corner.
  • Calibrate USB/LSB SSB sidebands: Radio ON, MW/LW/SW bands, SSB mode, tune into a strong well known frequency station, press SSB USB or LSB key, adjust until zero-beat, press and hold "LSB" or "USB" key until LCD display flashes.
  • Toggle internal ferrite antenna and external socket/telescopic antenna: Radio ON, MW/LW bands, press and hold "3" key, LCD display shows CH-A (Internal antenna), CH-5 (External antenna). Selecting external antenna would show SW in addition to MW or LW bands.
  • FM De-emphasis Time Constant: Radio ON, press and hold "4" key to toggle between 75 µS and 50 µS (this one seems to be listed in the official documentation as of Aug-2021).
  • Maximum audio level: Radio ON, press and hold "7" key, adjust level with Volume button, press "7" key to store. Each band/mode has a dedicated setting. Default level is 58.
  • Add seconds to the Clock: Radio OFF, press and hold "8" key to toggle the seconds digits (this one seems to be listed in the official documentation as of Aug-2021)..
  • Muting Threshold: Radio ON, press and hold "9" key, use tuning dial to set the value at the upper left corner, press Enter to store. Each band/mode have dedicated settings. Default value is 01.

• Peso netto
• 0.210 kg / 0 lb 7.4 oz (0.463 lb)

• Bibliografia
• - - Manufacturers Literature (Tecsun PL-330 FM Stereo/LW/MW/SW-SSB Receiver User Manual)

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

• Altri modelli

• In questo link sono elencati 35 modelli, di cui 34 con immagini e 21 con schemi.
  Elenco delle radio e altri apparecchi della Tecsun 德生通用电器制造有限公司 Tecsun General Electric Manufacturing Co., Ltd; Dongguan (Guangdong, SC)