E F Johnson Company 2425180 Benutzerhandbuch

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TRANSCEIVER PROGRAMMING
3-15
September 2001
Part No. 001-5100-001
Call Encryption PID - Indicates which DES-OFB 
encryption key should be used for secure private 
calls.
Call Timer - Sets the maximum time that the radio 
remains in the individual call mode after an individ-
ual call is received. A response must be made before 
this timer expires.
3.5.4 CONVENTIONAL SYSTEM TALK GROUP 
SCREEN
The conventional system Talk Group screen 
shown above is used to set up Project 25 talk groups (it 
is not used with analog channels). These talk groups 
are assigned to channels on the Channel screen (see 
Section 3.5.7). The parameters in this screen are as 
follows: 
Talk Group - Displays the talk group to be edited. To 
select another, click the scroll button to the right of 
the box.
 - Displays the screen used to change 
the alias of the selected talk group.
 - Displays the following screen that is 
used to add a new Project 25 talk group. The alias 
and ID of the talk group are specified in this screen. 
Group IDs from 1-65535 can be programmed with 
Project 25 operation. 
 - Deletes the selected talk group.
Strapping Mode - Selects if secure communication is 
not used, always selected, or is switch selectable on 
that talk group (see Section 2.6.17).
Secure Code - If secure communication is enabled, 
selects the secure code key used on that talk group.
3.5.5 SETTING UP CONVENTIONAL 
CHANNELS 
The conventional Channel screen shown in 
Figure 3-3 is displayed when a conventional analog 
channel is selected, and the screen shown in Figure 3-4 
is displayed when a conventional Project 25 (digital) 
channel is selected. These screens program unique 
channel parameters and also assign channels to the 
selectable zones displayed by the transceiver.
The general procedure for setting up a conven-
tional channel is as follows. Refer to the descriptions 
which follow this procedure for information on the 
parameters in the channel screens.
1. Make sure that the desired zone is selected in the 
Zone box. 
2. Select the channel number in the Channels Index 
box which is to be programmed with the channel 
(this will be the number displayed when the channel 
is selected).
3. To assign a conventional channel, select “Conven-
tional” as the channel type. Then select “Analog” if 
it is an analog channel or “Project 25” if it is a 
Project 25 channel. 
4. Click the Modify button to display the screen which 
enables that channel and programs the alias (tag) 
and transmit and receive frequencies. Then program 
the other parameters in the main part of the screen. 
Refer to the next section or Section 3.5.7 for more 
information, whichever is applicable.