110Trunked Radio Features Operation (cont.)
SmartZoneTM Operation (cont.)
Site Switching in SmartZone
Site Switching in SmartZone mainly uses signal strength to determine whether or not to switch sites. Other factors used to determine whether the radio should switch sites is the radio's preferred site selection (which is programmable via the RSS), and whether the radio is site locked or not. Because the radio at all times knows the site ID, active control mode, and the signal strengths of its adjacent sites, the radio is capable of quickly switching sites, which under normal conditions is invisible to the user.
Viewing the Current Site and Forcing a Site Change
1.Momentarily press the search button (programmed via the RSS).
a.If the radio is presently locked onto a site, the display will show either the name of the current site or the site number (determined by RSS programming).
b.If the radio is scanning for a new site, the display will show “SCANNING SITES” (MTS 2000 III radios only) until it locks onto a new site. This is a timed display which will disappear after a few seconds.
c.If the radio has not yet received a site ID outbound signalling word (OSW), the radio will display “SITE XX” until either the display times out or the radio receives the site ID OSW.
2.Press and hold down the search button to manually force the change to a new site. You will hear a tone and the display will show “SCANNING SITE“ (MTS 2000 III radios only) while the radio scans for a new site.
3.When a new site is found, the new site's name will be momentarily displayed if it is known, otherwise “SITE XX” will be displayed.
Locking and Unlocking a Site
As in an AMSS radio, you can force the radio to stay locked onto a site, regardless of whether the signal level of an adjacent site is higher or not. Of course, locking a radio onto a particular site will defeat the automatic site switching mechanisms of the radio. Note that you can still force the radio to scan to another site while site locked. The radio will automatically become site locked to the next site it finds. Refer to the section on AMSS operation for a description of how to enter the radio into and out of the locked state.
