• País
• Republica Popular China

• Fabricante / Marca
• Unknown - CUSTOM BUILT: China

• Año
• 2021 ?

• Categoría
• Radio - o Sintonizador pasado WW2

• Radiomuseum.org ID
• 349504

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

• Numero de transistores
• Hay semiconductores.

• Semiconductores

• Principio principal
• DSP, Digital Signal Processor

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

• Especialidades
• HD or solid state memory

• Tensión de funcionamiento
• Pilas + jack (etc.) para alimentación externa. / Li-Ion 3.7 / USB 5 Volt

• Altavoz
• Altavoz dinámico (de imán permanente) / Ø 4.5 cm = 1.8 inch

• Potencia de salida
• 3 W (unknown quality)

• Material
• Plástico moderno (Nunca bakelita o catalina)

• de Radiomuseum.org
• Modelo: BAIJIALI 21 Band Radio Music Player BJL-166 KK-F266 - Unknown - CUSTOM BUILT: China

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

• Ancho, altura, profundidad
• 105 x 65 x 33 mm / 4.1 x 2.6 x 1.3 inch

• Anotaciones

• The BAIJIALI BJL-166 pocket radio features FM/FML, MW, and SW bands, a sleep timer, and plays MP3 music files.

  Main features

  • FM1: 87.0 - 108.0 MHz (100 kHz steps)
  • FM2: 70 - 87 MHz (100 kHz steps)
  • MW: 522 - 1620 kHz (9 kHz steps)
  • SW: 3.9 - 22.2 MHz in 18 bands (5 kHz steps - see details below) 
    • SW1: 3.90 - 5.06 MHz
    • SW2: 5.06 - 6.10 MHz
    • SW3: 6.10 - 7.10 MHz
    • SW4: 7.10 - 8.10 MHz
    • SW5: 8.10 - 9.10 MHz
    • SW6: 9.1 - 10.1 MHz
    • SW7: 10.1 - 11.1 MHz
    • SW8: 11.1 - 12.1 MHz
    • SW9: 12.1 - 13.1 MHz
    • SW10: 13.1 - 14.1 MHz
    • SW11: 14.1 - 15.1 MHz
    • SW12: 15.1 - 16.1 MHz
    • SW13: 16.1 - 17.1 MHz
    • SW14: 17.1 - 18.1 MHz
    • SW15: 18.1 - 19.1 MHz
    • SW16: 19.1 - 20.1 MHz
    • SW17: 20.1 - 21.1 MHz
    • SW18: 21.1 - 22.2 MHz
  • Analog like tuning knob
  • Pure manual tuning with no memory presets
  • Audio output on the built-in speaker, without earphone socket
  • USB and TF ports to insert storage devices with MP3 audio files
  • Removable 18650 3.7V 2200 mAh Lithium Ion battery, charged via decated USB port.

  Brief technical details

  The PCB assembly reference is "KK-F266-MB-V2.2" "2021-12-15"

  The design is based around a BK1198 DSP Mechanical tuning AM/FM/SW radio Mono audio (SOP16 package version), by BEKEN. A basic RF front using one R25 NPN transistor and one A7 pair of diodes for ESD antenna protection, handles the SW and FM bands.

  The DSP IC shows the usual soft mute when jumping between frequency steps. The SW band uses 5 kHz steps, despite the display having only two decimal digits. While rotating the tuning knob, two soft-mute moments are registered for each 10 kHz second decimal digit. The tuning uses a rotary 100KR potentiometer coupled to a reduction gearbox with two gear wheels, enabling for a more precise tuning operation.

  A LTK5128D audio amplifier IC drives the built-in 45mm 2 Ohm 5W speaker.

  A custom  AH100QCL audio processor IC manages the radio and drives the LCD.

  The power supply uses some additional active components to handle the battery charging (very basic circuit of a 1R5 resistor and a SS4 diode), power regulation (422P / LN1154B332MR, LDO 3.3V), and switching (a A1SHB P-MOSFET to apply power to the MP3 ports; an undocumented MJE2B IC in series with the battery (-Batt) probably for protection).

• Peso neto
• 0.2 kg / 0 lb 7 oz (0.441 lb)

• Mencionado en
• - - Manufacturers Literature

• Autor
• Modelo creado por Jose Mesquita. Ver en "Modificar Ficha" los participantes posteriores.

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