E.F. Johnson Company 7780 Series, Preliminary Service Manual, Page: 54 / 116

TRANSCEIVER PROGRAMMING
3-18
November 1999
Part No. 001-7780-500
Announcement Groups Screen
This screen programs the announcement groups
that are used to communicate with several talk groups
simultaneously. There can be up to 3 announcement
groups per system, and each announcement group can
have up to 15 talk groups.
To create an announcement group, click the “Add
AG” button and the “Add TGs to the AG” screen
shown above is displayed. Enter the announcement
group ID, click the talk groups to select/de-select those
that are to be included, and then create the announce-
ment group by clicking the “Create AG” button. To
delete the current announcement group, click the
“Delete AG” button.
To edit an announcement group, click the
“Modify List” button on the right and the preceding
screen is displayed. Select the announcement group to
be edited from a pull-down menu selecting by clicking
the “AG” arrow. Then click the talk groups to select/
de-select them and then click the “Update List” button
to make the changes.
Control Channels Screen
This screen allows the system manager to view
and edit the control channels. Each SMARTNET
system can have up to four control channels, and each
SmartZone system can have up to 32 control channels.
Only one control channel is active at a time.
To edit this list, click the Control Channels tab
and then the “Modify List” button on the right side.
The following information is then programmed in the
dialog box that is displayed:
Control Channel - Selects the control channel to be
edited. To add a new channel, click the “New Entry”
button.
Frequency - The transmit and receive frequency of
the control channel. These are the mobile frequen-
cies, not the repeater frequencies. Only multiples of
5 kHz and 6.25 kHz are valid. With 800 MHz fre-
quencies, a receive frequency 45 MHz above the
transmit frequency is automatically entered.
New Entry Button - Click this button to display the
dialog box used to add another control channel.