User's Manual
 9 
4.  To make a call, press and hold the PTT switch, then speak into the microphone using your normal 
speaking voice. 1.5 inches (3 to 4 cm) from your lips. 
● Hold the microphone approximately 
5. Release the PTT switch to receive. 
◆  When the battery pack voltage becomes too low, transmission will stop and an alert tone will 
sound. See "Low Battery Warning" on page 13. 
ADVANCED OPERATIONS 
The following functions are programmable by your dealer, as described on page 8. 
KEY LOCK 
Press and hold the key programmed as Key Lock for 1 second to lock/unlock the transceiver keys. 
The following keys/functions can still be used when Key Lock is active: Key Lock, Monitor, Monitor 
Momentary, PTT, Squelch Off, Squelch Off Momentary, and Volume.   
If the key is programmed "with backup", when the transceiver power is turned OFF and then ON again, 
the keys remain locked.   
Otherwise, when the transceiver power is turned OFF and then ON again, the Key Lock function will be 
cancelled. 
MONITOR/SQUELCH OFF 
You can use the key programmed as Monitor or Squelch Off to listen to weak signals that you cannot 
hear during normal operation, to deactivate channel signalling, and to adjust  the volume when no 
signals are present on your selected channel. 
● Squelch Off: Momentarily press to hear background noise. Press the key again to return to normal 
operation. 
● Squelch Off Momentary: Press and hold to hear background noise. Release the key to return to 
normal operation. 
● Monitor: Momentarily press to deactivate QT, DQT Signal, Press the key again to return to normal 
operation. 
● Monitor Momentary: Press and hold to deactivate QT, DQT Signal, Release the key to return to 
normal operation. 










