Menu+1+9]Lamp Color L Amp C; Menu+2+0]Lamp Type L Amp T; Menu+2+1/2/3]Setting Channel Names - Leixen UV-52 User Manual

second.
You can choose what controls are locked as follows:
KEY: Numeric and function keys, excluding the
"Menu" key.
K + S: KEY +▲▼. Numeric +function keys +
"▲▼" excluding the "Menu".
PTT: PTT Key.
ALL: KEY + ▲▼ + PTT excluding "Menu" key.
Default is K + S.
．
19 [ MENU+1+9]Lamp Color
Four option: OFF, Orange, Blue, Purple.
．
20 [ MENU+2+0]Lamp type
You can set backlight behavior through Menu 20.
Select from the following settings:
OFF: Backlight is disabled.
KEY: Backlight is active only when a key is pressed.
CONT: Backlight is always enabled. The default
setting is CONT.
．
21-23

[ MENU+2+1/2/3]Setting Channel Names

Menu 21 determines whether the transceiver allows
the user-defined channel names to be displayed. If it is
enabled, channels would display user-defined channel
name, if it is disabled, all user-defined channel names
would not be displayed.
Menu 22 determines whether a user-defined channel
name will be displayed. Set this option to ON if you
would like to see channel names instead of merely
（
L amp C
（ ）
L amp T
）