• País
• Republica Popular China

• Fabricante / Marca
• Retekess Technology Co., Ltd.; Shenzhen

• Año
• 2022 ?

• Categoría
• Radio - o Sintonizador pasado WW2

• Radiomuseum.org ID
• 349967

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

• Numero de transistores
• 5

• Semiconductores

• Principio principal
• DSP, Digital Signal Processor

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

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

• Altavoz
• Altavoz dinámico (de imán permanente) / Ø 4 cm = 1.6 inch

• Material
• Plástico moderno (Nunca bakelita o catalina)

• de Radiomuseum.org
• Modelo: Wide Frequency Radio Receiver TR110 - Retekess Technology Co., Ltd.;

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

• Ancho, altura, profundidad
• 60 x 111 x 20 mm / 2.4 x 4.4 x 0.8 inch

• Anotaciones

• The Retekess TR110 FM.MW.SW.AIR.CB/VHF.UHF.WX.HAM Wide Frequency Radio Receiver  is a pocket unit featurig a variety of modulation modes like AM, WFM, NFM, and SSB (USB/LSB).

  This radio is sold under other brands like Raddy model RF760 or HanRongDa model HRD-747. All share the same chassis and cabinet. At least four chassis versions are known.

  Some specification discrepancies have been noted between the radio behavior and the user guide, like the claimed ability to receive VHF on WFM modulation; the recent production batches only allows NFM. A notable non-documented feature extend the MW band to receive LW when using an external antenna.

  Main features

  • FM:
    • Coverage: 64 - 108, 76 - 108, 87.5 - 108 MHz
    • Stepping: 10.0, 50.0, 100.0 kHz
    • De-emphasis: 50, 75 uS
    • Bandwidth: 110, 84, 60, 40 kHz
    • Modulation: WFM
    • Sensitivity: 1 μV
  • MW:
    • Coverage: 
      • 520 - 1710 kHz (10, 5 kHz steps)
        • 150 - 1710 kHz (10, 1 kHz steps) on ext. antenna
      • 522 - 1710 kHz, (9, 3 kHz steps)
        • 153 - 1710 kHz (9, 1 kHz steps) on ext. antenna
    • Bandwidth: 6, 4, 3, 2.5, 2, 1.8, 1 kHz
    • Modulation: AM
    • Sensitivity: 1.5 mV/m
  • SW:
    • Coverage: 3.20000 - 30.00000 MHz continuous scan (14 sub-bands)
    • Stepping: 5, 1, 0.1, 0.02, 0.01 kHz
    • Bandwidth: 6, 4, 3, 2.5, 2, 1.8, 1 kHz
    • Modulation: AM, SSB (USB), LSB
    • Sensitivity: 10 μV
  • AIR:
    • Coverage: 118.0000 - 138.0000 MHz continuous scan (5 sub-bands)
    • Stepping: 25, 12.5, 8.3 kHz
    • Bandwidth: 6, 4, 3, 2.5, 2, 1.8, 1 kHz
    • Modulation: AM
    • Sensitivity: 1 μV
  • CB:
    • Coverage: 25.00000 - 28.00000 MHz
    • Stepping: 5, 1, 0.1, 0.02, 0.01 kHz
    • Bandwidth: 6, 4, 3, 2.5, 2, 1.8, 1 kHz
    • Modulation: AM, NFM
    • Sensitivity: 10dBμV
  • VH/UHF: 
    • Coverage: 30.0000 - 520.0000 MHz continuous scan (8 sub-bands)
      • VHF: 30.0000, 136.0000, 174.0000, 220.0000 MHz
      • UHF: 409.0000, 446.0620, 462.5620, 443.0000 MHz
    • Stepping: 25, 12.5, 7.5, 5, 1 kHz
    • Bandwidth: 4.5, 3.75, 2.5, 1.7 kHz
    • Modulation: NFM
    • Sensitivity: -9dBμV
  • WX: (North American weather band)
    • Coverage: 162.4000 162.5500 MHz (7 fixed frequencies)
    • Bandwidth: 3 kHz
    • Modulation: NFM
    • Sensitivity: -9dBμV
    • Scan abd Alert mode (NOAA)
  • Squelch with 9 levels for SW, AIR, CB, and VHF/UHF bands
  • Manual and ATS tuning
  • 1000 memory presets
  •  
  • 3.5 mm Stereo earphone jack
  • 3.5 mm External antenna jack
  • USB-C port for battery charging
  • Digital thermometer
  • Clock, Sleep timer, and Alarm

  Brief technical details

  There are at least four revisions of the PCB assembly. Please see the schematic diagrams for details:

  • BY-747 V2.6 2021.4.15
  • BY-747 V3.6 2021.9.23
  • BY-747 V4.2 2022.11.11
  • BY-747 V5.0 2023.5.18

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

• Otros modelos

• Donde encontrará 6 modelos, 6 con imágenes y 3 con esquemas.
  Ir al listado general de Retekess Technology Co., Ltd.; Shenzhen