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to prevent the interruptions from making a message 
difficult to understand. Times of 0.5-8.0 seconds can 
be programmed in 0.5-second steps.

Changing The Priority Channel

If a fixed priority channel is associated with the 

current scan list, it can be changed to another channel 
if the PRI ED option switch is programmed. With dual 
priority, this changes only the first priority channel. To 
change both priority channels, use the Scan List Edit 
function described in Section 4.12.1. Proceed as 
follows to change a priority channel using the PRI ED 
option switch:

1. Make sure that both standard and radio wide scan-

ning are off (the rotating   icon is not indicated in 
the right status display).

2. Select the channel that you want to be the priority 

channel using the Select switch in the normal 
manner. If the channel is in a different zone, also 
select the appropriate zone.

3. Press the PRI ED option switch and “Priority” is 

briefly displayed to indicate that the selected 
channel is now the priority channel. Other indica-
tions that may occur are as follows:

•

If “No Priority” is displayed, priority sampling 
may not be enabled on the scan list.

•

If “Sel Chan” is displayed, the priority channel is 
always the selected channel and cannot be 
changed.

•

If no indication displayed, the scan list may not be 
user editable or the channel may not be in the scan 
list. 

Standard conventional calls can be placed to other 

mobile units monitoring the selected channel. The 
proper coded Call Guard squelch tone or code or P25 
NAC may need to be transmitted by your radio for 
them to receive your call (see Sections 5.5 and 5.15.3).

Placing a Standard Conventional Call

1. Turn power on and set the volume as described in 

Section 3.1 on page 12. Select the channel 
programmed for the mobile you want to call (see 
Section 3.4.2 on page 13).

2. Monitor the channel automatically or manually as 

3. Press the PTT switch and if the Busy Channel 

Lockout feature is programmed on the channel, the 
transmitter is automatically disabled if the channel 
is busy (see Section 5.4). Otherwise, busy and out-
of-range conditions are not indicated and speaking 
can begin after monitoring the channel. 

4. Press (and hold) the PTT switch to talk and release 

it to listen. When the call is finished, place the 
microphone back on-hook.

Receiving a Standard Conventional Call

1. Select or scan the channel programmed for the call 

you want to receive (refer to Section 5.11 for more 
scanning information).

2. When the call is received, take the microphone off-

hook and press the PTT switch to talk and release it 
to listen. If scanning, responses may occur on the 
priority, selected, or receive channel as described in 
Section 5.11.3. 

3. When the call is finished, place the microphone 

back on-hook. 

DTMF (Dual Tone Multi-Frequency) tones can 

be generated for ANI (Automatic Number Identifica-
tion) and other purposes on conventional analog 
channels. One of the following options may be 
enabled on each channel:

Pre-Tx ANI - A preprogrammed ANI sequence is 
automatically sent each time the PTT switch is 
pressed.

Post-Tx ANI - A preprogrammed ANI sequence is 
automatically sent each time the PTT switch is 
released.