Changing the Call Ring
To select a favorite call ringer melody:
1.Press and hold the CALL button and, at the same time, press and hold the Power button for at least 2 seconds.
2.
3.Press the Up or Down button to select one of three call ringer melodies; each melody will sound as it is chosen.
4.Stop at the desired melody and press the Monitor (M) or PTT button to confirm your selection.
Low Battery Alert
When the battery level becomes low, the battery icon ( 
) flashes and produces an audible tone every ten seconds. In this case, recharge or replace the batteries with new ones.
Monitor Button (M)
You can monitor channel activity by pressing the Monitor (M) button (2). If pressed for more than 2 seconds, you can continuously monitor channel activity. Press again, and channel activity monitoring is disabled.
Function Select (F) Button
Pressing the Function button will allow selection of frequency channels, as well as selection of the various unit functions. Each press permits selection of the desired channel 
) when pressed and held for more than 2 seconds.
Channel Selection
Press function button once until large 
) or Down (
) buttons to select desired channel
CTCSS Selection
To select a CTCSS channel code, press function button twice until small two- digit display flashes. Then press Up or Down button to select desired code (1-
38)for that channel. The CTCSS primary code feature allows you to ignore transmissions from other transceivers that are using the same channel. How