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For example, APCO-25 can be used as a voice type on a Motorola system that is
not actually a P25 system. When we're trying to determine whether a system is a
P25 system, we need to ignore the System Voice line and focus on the System Type
line. If there is P25 Voice on a non-P25 system, the scanner can sort this out while
scanning.
System Frequencies
The system frequencies section in the database lists all the frequencies used by the
system. For Motorola and P25 systems, you will need to program only the system
control channel frequencies for primary control channels and for alternate control
channels in the database.
For EDACS and LTR systems, you will need to program all the listed frequencies
and their associated LCN. Some systems have multiple sets of frequencies. These
are called multi-site systems: each set of frequencies corresponds to a different
physical antenna site.
Talk Group IDs (Channels)
The Talk Group information section shows the different channels on the system
and which agency uses them. You'll need to go through the list and make a note of
the channels you want to hear. Then you can start thinking about how you want to
organize those channels.
(One of the great features available to subscribers on RadioReference is the ability
to tag channels directly on the site and print out a nicely-formatted hardcopy of
each system. It makes this task much, much easier.)