DEEPELEC DP-666

Unknown - CUSTOM BUILT: China

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  • Year
  • 2024 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 357327

 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.
  • 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
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: DEEPELEC DP-666 - Unknown - CUSTOM BUILT: China
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 142 x 80 x 30 mm / 5.6 x 3.1 x 1.2 inch
  • Notes

  • The DeepElec DP-666 receiver is developed in China and distributed worldwide by DeepElec. It is one of several commercial and DIY projects based on the PE5PVB TEF6686_ESP32 open source project. Currently (Oct-2024), the radio is being shipped with a DeepElec open source firmware forked from the original PE5PV that is not supporting the LCD Touchscreen, although a Beta version of the PE5PV and another proprietary Megatron test version are both supporting it. 

    Main specifications

    • FM-RDS: 65 - 108 MHz in five sub-bands
      • Stepping: OIRT 30kHz default, FM 100kHz default (50, 100, 200 kHz options)
      • Bandwidth: 17 values from 56 to 311kHz, and Auto BW
      • Sensitivity: <0.5uV (30dB S/N)
      • RDS, AF, iMS, EQ, AUTO BW, FM DX
    • SW: 1700 - 27000 kHz
      • Stepping: 5 kHz
      • Bandwidth: 3, 4, 6, 8 kHz
      • Sensitivity: <10uV (20dB S/N)
    • MW: 520 - 1720 kHz (default 10 kHz steps), 522 - 1719 kHz (default 9 kHz steps)
      • Bandwidth: 3, 4, 6, 8 kHz
      • Sensitivity: <10uV (20dB S/N)
    • LW: 144 - 513 kHz (default 9 kHz steps)
      • Bandwidth: 3, 4, 6, 8 kHz
      • Sensitivity: <10uV (20dB S/N)
    • SMA RF antenna socket
    • Manual, Direct entry, Automatic and store
    • Squelch knob (disabled by default)
    • 3.5mm stereo earphones jack
    • Internal 5000mAh Lithium battery
    • USB-C port for charging and communication (CH340 USB-Serial interface)
    • BOOT button on left side for easy firmware flashing
    • Internal Wi-Fi/BT antenna (fully operation is under firmware development - Oct-2024)
    • 2.8" IPS 320x240 Color LCD Touchscreen (touch is fully functional when using the proprietary Megatron firmware or the PE5PV Beta version - oct-2024)

    Brief technical details

    PCB assembly reference "Mini6686 V2.5"

    The radio is built around the MXP F8602 TEF6686HN (v102) DSP tuner chip, managed by one ESP32-WROOM-32U dual Core with integrated 4MB SPI Flash and Wi-Fi+BT module, a XL9555 GPIO Expander, a XPT2046 Touch Screen Controller, and a CH340N USB-UART bridge controller. 

    The 4Ω, 3W 45mm sealed cavity speaker is driven by a TI2B AYK/TPA6211A1 mono fully differential audio power amplifier and a +AIF/MAX97220AETE+ differential input direct drive headphone amplifier is used for the 3.5mm stereo jack.

    The power supply and control usess several other active devices, like a TP4056 Battery charger, three DE=/RT9193-33PB LDO regulators, a A5SHB/SI2305 P-MOSFET, and a Y1/SS8050 NPN transistor.

  • Net weight (2.2 lb = 1 kg)
  • 0.3 kg / 0 lb 10.6 oz (0.661 lb)
  • Author
  • Model page created by Jose Mesquita. See "Data change" for further contributors.

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