Only send the alert code when SOS
button is pressed.
Send an alert tone when SOS button is
pressed.
Only the device emits an alarm sound
when SOS is pressed.
Turn off busy channel lock.
Activate busy channel lock.
Disable transmission time limit.
30 sec, 60 sec, 120
sec, 240 sec, 480
sec
Set the maximum transmission time when
PTT is pressed.
Keep the backlight always on, not turning
off automatically.
5s、10s、15s、20s、
30s、1min、2min、
3min
Set the duration after which the system
automatically turns off the backlight
without any operation.
Do not automatically lock the keyboard;
keep it always active.
Set the duration after which the system
automatically locks the keyboard with no
operation; only PTT, Side Key 2, and Side
Key 3 remain usable. Press and hold the
FM key to unlock.
Up/down keys are disabled when the
keyboard is locked.
Up/down keys can still change channels
(not effective in frequency mode) when
the keyboard is locked.
Turn off S-meter display.
Display S9+ and the specific dB value when
the received signal report is greater than 59