You can adjust the squelch threshold in the Squelch menu item.
Setting range:
Low >> 5 dBµV
Middle >> 15 dBµV
High >> 25 dBµV
The squelch threshold is displayed on the home screen in the RF signal level area.
CAUTION
Risk of hearing and material damage
If you set the squelch threshold to a very low value, a very loud hissing noise can occur in the receiver. This hissing noise can be loud enough to cause hearing damage or overload your system’s loudspeakers.
Before adjusting the squelch threshold, set the volume of the audio output to the minimum.
Never change the squelch threshold during a live transmission.
To open the Squelch menu item:
On the home screen, press the SET button to open the operating menu.
Press the UP or DOWN button until the Squelch menu item
appears in the selection frame.
Press the SET button to open the menu item.
Adjust the settings as desired.
Press the SET button to save the changes you made to the settings.
OR
Press the ON/OFF button to cancel the entry without saving the
settings.