User Manual

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4
displays the volume series.
5>. Frequency regulation
Turn the FRE encoder to adjust the reception frequency, while the
LCD screen displays the current frequency, and press the encoder handle
to the mute/non-mute switch.
6>. Mute
Press the VOL knob to switch the mute/non-mute button down.
7>. AMCAP switch
Long press the FRE knob to switch on or off the AMCAP, the LCD
display subtitle ON means to turn on the AMCAP, and OFF means to turn
off the AMCAP.
8>. AMCAP threshold adjustment( when the AMCAP switch on)
Short press the FRE knob to AMCAP threshold adjustment interface,
you can adjust the movement threshold of the AMCAP according to the
specific usage situation. The adjustment range is 0-20. The higher the
value is, the higher the threshold is, the easier the weak signal is to be
silent. Vice versa.
9>. Serial port (without serial port control)
The module reserved TTL level serial port control interface. TTL serial
port and this module communication need to connect the module's
UART_RX, UART_TX and GND (the corresponding position of PCB is
marked). You can use the external MCU or the computer serial port to