Grecom EZ Scan-SD PSR-700, Руководство пользователя

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“Talkgroups” on the top line of the display while you are browsing
the library. When browsing the EZ Scan-SD
ʼ s library, everything
you find below the “Systems” level under States or Counties/
Cities will be trunked radio systems and associated sites and
talkgroups. Unlike conventional channels, trunking talkgroups
have dependency - at least one site from the system must be
selected in order for picked talkgroups to imported to Scanlists.
There are many different manufacturers and flavors of trunked
radio systems, each with their own special programming
nuances. Fortunately, the EZ Scan-SD takes the guesswork out
of programming talkgroup objects. You simply browse the library
to find what you want to hear, and regardless of whether it
ʼ s a
conventional channel or a trunking talkgroup, most of the time it ʼ s
as simple as picking the objects you want and importing them to
your desired Scanlists.
There is one key difference between trunking talkgroups and
conventional channels. A conventional frequency typically
operates from a single tower or building rooftop site. A few
conventional systems may have more than one site, but they still
use the same frequency, so there are no special considerations
for programming these in the EZ Scan-SD.
On the other hand, trunked radio systems consist of one or more
discrete
sites strategically located throughout the service area of
the system to provide the desired level of coverage. Each site
has its own set of frequencies. One type of trunked radio system
technology known as “simulcast” has multiple radio sites that all
operate on the same set of frequencies - to the trunked system,
a simulcast subsystem appears as a single site.
It ʼ s important to understand that at least one Site for a system
must be selected when you are importing talkgroups from the
Library to Scanlists. Many of the talkgroups you pick will be a
part of systems that have only one site, and you need only
ensure that this one site is also selected when you import.
In cases where there are more than one site to choose, you have
a few options.
In every case, the easiest way to bring in a system ʼ s sites and
talkgroups is to simply place a checkbox next to the system ʼ s
name after you drill in from the Systems level of the library from
either the States or Counties/Cities level. This selects every site
in the system, and every talkgroup as well. For example:
EZ Scan-SD User Manual ! Page 34