Kenwood MASTER PROTALK TK-3131 - Manual (Page 33)

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You can turn this function ON or OFF:
1 Turn the transceiver power OFF.
2 Press and hold the MENU key while turning
the transceiver power ON (for 1 second).
3 Press the ▲ or ▼ key to select “ ”.
4 Press the MENU key to select “ ” (battery
indicator on) to “ ” (battery indicator off).
5 Press the PTT, MON, or CAL key to exit
Setting Mode.
C
ALLING
A
LERT
T
ONES
Calling alert tones are used to identify yourself to your party
members. You can set up a calling alert tone to one of 6
types. If each party member uses a different calling alert
tone, it is easy to know who is making the call. Pressing the
CAL key before making a call will send your calling alert tone
to your party members.