Operating Manual

5-18 5100 ES Models II/III Portable Radio Operating Manual March 2008
Conventional Mode Features
5.14.3 Network Access Code
Project 25 conventional channels also use a NAC (Network Access Code) to control which
calls are received on a channel. The NAC can be 0-4095, and each transmit and receive
channel can be programmed for a different code. Other operation, such as monitoring
before transmitting, is similar to that of analog channels. NAC (and talk group ID) detect
can be disabled by the monitor mode described in Section 5.2.
5.14.4 P25 Group Calls
P25 group calls are placed by simply selecting the channel programmed for the desired
group, monitoring the channel if required, and transmitting.
When a P25 group call is received, the alias (or frequency) of the selected channel is
displayed. The radio can be programmed so that the following are also displayed for 0.5-
7.0 seconds or continuously during the call.
P25 PTT ID- The unit ID of the radio placing the call is displayed.
P25 Talk Group - The alias of the talk group on which the call is being received is
displayed.
User Group ID - If the group ID of the call being received is included in a pre
programmed User Group ID list, the alias programmed in that list for that group is
displayed.
5.14.4.1 Changing a Channel Talk Group
If the Digital Talk Group Select option switch or Select TG menu parameter is
programmed, the talk group assigned to a channel can be changed by the user. The new
talk group continues to be assigned to the channel until it is manually changed again
(cycling radio power or selecting another channel does not reselect a default talk group).
Change the talk group assigned to a channel as follows:
1 Select the channel to be changed.
2 To select the talk group from the list of programmed talk groups, briefly press the Talk
Group Select option switch or select the Select TG > ID List menu parameter. Then
press the Up/Down switch until the alias of the desired talk group is displayed. If talk
group selection has been disabled on the channel by programming, “NO LIST” is
displayed, a tone sounds, and no change occurs. Press the <F2> switch to select the talk
group and return to normal operation.
3 To enter a new talk group number from 1-65,535, press and hold the Talk Group Select
option switch or select the Select TG > Enter ID menu parameter. Enter the desired
talk group directly using the keypad. If less than five digits are entered, press the <F2>
switch to select the talk group and return to normal operation.