1 radio on state long press 3s 2 3 ALERT radio off state Disable the ALERT: a. Disable it during the detection without any warning: when the display character “ALERT” is lashing, long press the “ ” button for 3 seconds to return to the WB band frequency, and then press the “ ” button to disable it. 2 1 (WB) 3 ALERT b. Disable it when a warning message is being played:just press the “ ” button.