Kenwood NEXEDGE NX-200 Function Reference page 230

9 NXDN TRUNKING SYSTEM
9.2 Control Channel Hunt
System Search Policy
System Search Policy is the policy used when the transceiver searches for a system.
Using this function, the transceiver can be configured to start roaming easily in order for a user to select the system having
good signal strength. The transceiver can also be configured not to start roaming in order to keep using the system in use
as much as possible around the system critical point.
System Search Policy
This is normal configuration considering both roaming and coverage. This configuration is used for normal
Normal
communications.
This configuration gives higher priority for roaming to maintain communication quality and allows the
Roaming Preferential transceiver to start the system search easily.
This configuration is used to install many multiple sites having relatively small communication area.
This configuration prioritizes the coverage of the current site, and the transceiver is less likely to start a
system.
Site Preferential
This configuration is used when the transceiver is operated with a single site, or the transceiver is used to
widen the operation area of the transceiver by installing a small number of sites having wide coverage.
Note
• For the signal strength level while the transceiver acquires a control channel, Roaming Preferential is the strongest level followed by
Normal and Site Preferential.
• For the frequency of the transceiver to migrate from the current site to another site, Roaming Preferential is the highest frequency rate
followed by Normal and Site Preferential.
Configuration using KPG-111D/ DN
Configuring the System Search Policy (
Retaining the Site Information Used When the Transceiver Is Turned OFF
(Last Control Channel)
The Last Control Channel can be used to retain the information for the last-used site if the transceiver is turned OFF while
the transceiver is operated in an NXDN Trunking system.
There are two types of operation for the system. Whether the transceiver starts searching for a control channel from the
last-used site or from the preferred channel when the transceiver searches for a control channel can be configured
depending on the operation mode of the system.
 If giving preference to always using the site having good signal strength:
Since the last-used site normally has high signal strength, it is effective to start searching for a control channel from the
last-used site.
 If giving preference to always using the preconfigured site:
The transceiver may register at a site having poor signal strength every time. To avoid this problem, it is effective to
always start searching for a preferred channel.
If this function is enabled, the information for the last-used site is retained even if the transceiver is turned OFF. When the
transceiver is turned ON again, the transceiver starts searching for a control channel from a control channel in the retained
site.
If this function is disabled, the information for the last-used site is not retained after the transceiver is turned OFF. When
the transceiver is turned ON again, the transceiver starts searching for a control channel from the control channel
configured as a Preferential Hunt Control Channel. Preferential Hunt Control Channel is the channel having the highest
priority when searching for a control channel. (
FUNC (K)/Ver 4.00
Table 9-3 System Search Policy
Description
See FPRG 8.25.13 System Search Policy)
FPRG 8.8 Zone Edit Window (NXDN Trunking System))
See
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