Operating Manual

March 2008 5100 ES Models II/III Portable Radio Operating Manual 3-15
General Operation
3.9.4.1 Systems
A system is a collection of channels or talk groups belonging to the same repeater site. It
defines all the parameters and protocol information required to access a site. Up to 16
systems of any type can be programmed.
The maximum number of channels assignable to a system is limited to 864. Channels may
also be limited by available memory space as described in the following information.
3.9.4.2 Channels
A channel selects a radio (RF) channel or talk group as follows:
Conventional Analog Mode - A channel selects a specific radio channel, Call Guard
(CTCSS/DCS) squelch coding, and other parameters unique to that channel.
Conventional Project 25 Mode - A channel selects a specific radio channel, NAC
squelch coding, talk group ID, and other parameters unique to that channel.
SMARTNET/SmartZone and Trunked Project 25 Modes - A channel selects a
specific talk group, announcement group, emergency group, and other parameters
unique to that talk group.
A maximum of up to 864 channels can be programmed with the preceding modes
depending on the option enabled. These channels can belong to a single system or multiple
systems. The maximum number is also limited by the available memory. For example,
since more memory is required to program a SMARTNET system than a conventional
system, the total number of channels decreases as the number of SMARTNET channels
increases. The programming software displays a bar graph which shows the amount of
available memory space that is used by the current data.
3.9.4.3 Zones
A zone is a collection of up to 16 channels of any type. For example, a zone could include
12 conventional channels and four SMARTNET channels. One use of zones may be to
program the channels used for operation in a different geographical areas. The maximum
number of zones is 54.