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be disabled. To disable all keys except push-to-talk and backlight, turn
power on with the LCK key pressed. If a key is then pressed, all that
happens is that “KEYLOCK” is displayed. To re-enable the keypad,
simply turn power on again with the LCK key pressed.
Key Press Tone Disable
If the tone that sounds when a key is pressed is distracting or
annoying, it can be disabled. To enable or disable this tone, turn power on
with the SCN key pressed. When the key press tone is disabled, “MUTE”
is displayed.
High/Low Power Select
Some transceivers have selectable high and low power output (your
system operator will tell you if yours does). If your transceiver has this
feature, power output is changed by turning power on with the RTN key
pressed. Either HI PWR or LOW PWR is then flashed in the display to
indicate which power setting is currently selected. The low power setting
may increase battery life but decrease range. The opposite may occur
with the high power setting. If your transceiver does not have selectable
power output, this information is still indicated even though no power
change occurs.