21 Band Radio Music Player M168

Unknown - CUSTOM BUILT: China

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  • Year
  • 2022 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 356396

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • DSP, Digital Signal Processor
  • Wave bands
  • Broadcast, more than 2 SW bands plus FM or UHF.
  • Details
  • HD or solid state memory
  • Power type and voltage
  • Batteries / addl. power jack / Li-Ion 3.7 / USB 5 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4.5 cm = 1.8 inch
  • Power out
  • 3 W (unknown quality)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: 21 Band Radio Music Player M168 - Unknown - CUSTOM BUILT: China
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 118 x 69 x 30 mm / 4.6 x 2.7 x 1.2 inch
  • Notes

  • The M168 pocket radio was sold under several brand names, like ALLOYSEED, ALLOET, or VAKIND and features FM/FML, MW, and SW bands, and plays MP3 music files.

    For specifications see the similar BJL-166. It is identical, except it misses the sleep timer.

    The M168 succeeds the BJL-166 and the main difference is that the M168 uses an audio Class-F amplifier, introducing lots of noise in the MW and SW lower bands. The older BJL-166 uses a Audio IC set to Class-AB operation.

    Brief technical details

    The PCB assembly reference is "M168 2022-10-18"

    The design is based around the same BK1198 DSP Mechanical tuning AM/FM/SW radio Mono audio (SOP16 package version), by BEKEN, as seen on the BJL-166 model.

    Instead of the LTK5128D audio amplifier IC of the BJL-166, it uses a MIX2018A Class-F driving a 45mm 4 Ohm 3W speaker.

    A custom  CXX014B5C audio processor IC manages the radio and drives the LCD.

     

     

  • Net weight (2.2 lb = 1 kg)
  • 0.270 kg / 0 lb 9.5 oz (0.595 lb)
  • Author
  • Model page created by Jose Mesquita. See "Data change" for further contributors.

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