E.F. Johnson Company 5100 ES, Operating Manual

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3-18 ES Series Models II/III Portable Radio Operating Manual
General Operation
3.9.5.2 Multi-Net Systems
Multi-Net systems are structured somewhat differently than non-Multi-Net systems.
Characteristics of Multi-Net systems as used with this radio are as follows:
• Each system is programmed with a site list that includes all the sites into which the radio
can roam. Up to 32 sites can be specified per system.
• A system defines the characteristics of a single home channel for all of these sites.
Therefore, one system must be programmed for each home channel to which group calls
are placed. Up to 16 systems can be programmed. Channels are linked to a system
which determines the home repeater of the group calls.
• Some other system parameters are unit ID (unique ID), fixed priority, block, and
transmit inhibit IDs; emergency zone/channel, telephone and unit call priority and
permissions; and group scan list.
3.9.5.3 Channels
A channel selects a radio (RF) channel or talkgroup 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, talkgroup ID, and other parameters unique to that channel.
SMARTNET/SmartZone and Trunked Project 25 Modes - A channel selects a
specific talkgroup, announcement group, emergency group, and other parameters
unique to that talkgroup.
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.
3.9.5.4 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 different geographical areas. The maximum
number of zones is 32 or 54 depending upon the option selected.