Upgrades:
1. Our hardware version is the latest 4.0.
2. Our latest firmware version is 1.18.
3. Upgraded on the basis of the old version, frequency storage is added.

Features:
- Adding a LNA preamplifier (optional) to increase the signal by 20dB
- TEF6686 full-band finished radio
- 3.2" large screen. Dual speaker stereo! Strong anti-interference! PCB double-sided full copper! The pcb case is sturdy and durable
- With voltage display (please pay attention to charging below 3.3v) ; the charging voltage is 5v
- Antenna with SMA male connector
- Medium wave, short wave, and FM
- 5000MAH lithium battery
- Size: 115 x 106 x 20mm/4.5 x 4.2 x 0.8"
- Weight: 334g/0.7lb

Brush:
(1. Hold the boot button of the motherboard. 2. Insert the type-c data cable and connect to the computer. 3. Turn the power-on knob to power on.)
Use the corresponding software to flash the firmware of the host computer. Disconnect the data cable after successful flashing. Reboot. Brush is complete!

System Settings:
- Volume (audio level)
A converter offset (local oscillator frequency of any converter used)
A low frequency band edge (lowest frequency that can be selected)
- High frequency band edge (highest frequency that can be selected possible)
A level offset (signal table deviation due to cable loss or antenna amplifier/converter gain)
- Stereo separation threshold (adjust channel separation if signal strength is below this)
- High chamfer frequency (cutoff frequency for high points of low signal strength)
A high cut threshold (belonging to the previous option, this is the signal value below which should activate the previous option)
A low level threshold (if the signal becomes very weak, the data crosstalk of the whole circuit can be heard in the sound. With this option you can delay the data stream of low signal strength, ideal for DX)
- Display Brightness (TFT Contrast)

Attention:
- It is not recommended to update the flash firmware by yourself. (Remove the 6 hexagon socket screws in the rear case and use an M3 hexagon screwdriver to disassemble)

Package Included:
- 1 x Main Unit
- 1 x Antenna