Your dealer can activate a variety of transceiver functions to perform without any additional operation on your part.
BACKGROUND OPERATIONS
TOPTIME-OUT TIMER (TOT)
The Time-out Timer prevents you from using a channel for an extended duration. If you continuously transmit for a preset time, the transceiver will stop transmitting and an alert tone will sound. Release the PTT switch.
BATTERY SAVER
The Battery Saver decreases the amount of power used when a signal is not being received and no operations are being performed, elongating your battery life.
LOW BATTERY WARNING (Type I Only)
Your dealer can set an alert tone to sound and the LED indicator to blink red when the battery power is low. The battery power icon displays the battery power remaining, as shown below. When the battery power is very low, recharge or replace the battery pack.

SIGNAL STRENGTH INDICATOR (Type I Only)
The signal strength indicator displays the strength of received calls. No icon appears when no signal is available.

COMPANDER
If programmed by your dealer for a channel, the compander will remove excessive noise from transmitted signals, to provide higher clarity of signals.
BUSY CHANNEL LOCKOUT (BCL)
When activated, BCL prevents you from interfering on a channel that is already in use. Pressing the PTT switch will cause an alert tone to sound and the transceiver will not transmit. Release the PTT switch to stop the tone.
If BCL Override has been programmed, you can transmit over the current signal:
If the channel is already in use, a warning tone will sound.
VOICE ANNUNCIATION
When changing the zone and/or channel, an audio voice will announce the new zone and channel number.