Sihuadon FM/MW/SW/LW/AIR DSP Receiver R-108

• Country
• People's Republic of China

• Manufacturer / Brand
• Dongguan Xinhuaide Electronic Commerce Co. (XHDATA); Dongguan

• Year
• 2020 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 333296

• Picture
• Schematics

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Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• DSP, Digital Signal Processor

• Wave bands
• Broadcast, Long Wave, more than 2 x SW plus FM or UHF.

• Power type and voltage
• Batteries / addl. power jack / Lion: 3.7 / DC 5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Power out
• 1 W (max.)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Sihuadon FM/MW/SW/LW/AIR DSP Receiver R-108 - Dongguan Xinhuaide Electronic

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 118 x 73 x 27 mm / 4.6 x 2.9 x 1.1 inch

• Notes

• Sihuadon belongs to the same Group making Radiwow and XHDATA radios.

  The original Radiwow R-108 released in 2018, was later produced as Sihuadon R-108 released in 2020, together with an updated Radiwow R-108. 

  The differences between the three versions are not officially disclosed, but are inferred from publicly available documents and pictures:

  	Sihuadon (2020)	Radiwow (2020 update)	Radiwow (2018 original)
  Cabinet colors	Black, Gray	Gray	Gray
  Cabinet front label	R-108 500 Memory Presets	R-108 500 Memory Presets	R-108 500 MEMORIES PRESET
  Built-in Speaker	4 Ω  5 W	4 Ω  5 W	4 Ω  3 W
  Backlight color	Randomly White or Amber (As of Oct-2021, some sellers offer color choice at Customer's request)	Randomly White or Amber (As of Oct-2021, some sellers offer color choice at Customer's request)	White
  Firmware version	Unknown, but operation behavior changes have been reported.	Unknown, but operation behavior changes have been reported.	Unknown

   

  Main specifications

  • Band coverage
    • FM: 64 - 108 MHz (Russia), 76 - 108 MHz (Japan), 87.5 - 108 MHz (EU, USA) - Selectable in the setup
      • Sensitivity < 3 uV @ 30 dB S/N 
      • Selectivity > 60 dB (± 150 kHz)
    • MW: 520 - 1710 kHz (USA), 522 - 1620 kHz - Selectable
      • Sensitivity <0.5 mV/m @ 26 dB S/N 
      • Selectivity > 60 dB (BW=3kHz, ± 9 kHz)
    • LW: 150 - 450 kHz
      • Sensitivity < 10 mV/m @ 26 dB S/N
      • Selectivity > 60 dB (BW=3kHz, ± 9 kHz)
    • SW: 1711 - 29999 kHz
      • Sensitivity < 10 uV @ 26 dB S/N
      • Selectivity > 60 dB (BW=3kHz, ± 5 kHz)
    • AIR: 118 - 137 MHz
      • Sensitivity < 0.5 uV @ 26 dB S/N
      • Selectivity > 60 dB (BW=3kHz, ± 25 kHz)
  • Memory presets: 500
  • Audio output: 1 Watt @ 10% distortion
  • Built-in speaker: 5 Watt, 4 Ohm
  • 3.5mm stereo earphone socket
  • Clock and Alarm (buzzer or radio)
  • Power Supply
    • 3.7 V DC BL-5C Li-Ion battery
    • 5 V DC via USB charger port

• Net weight (2.2 lb = 1 kg)
• 0.190 kg / 0 lb 6.7 oz (0.419 lb)

• Author
• Model page created by Jose Mesquita. See "Data change" for further contributors.

• Other Models

• Here you find 5 models, 5 with images and 5 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Dongguan Xinhuaide Electronic Commerce Co. (XHDATA); Dongguan