UBCD396XT
37.Scan mode
Scanning vs. Searching
Scan and Search mode have very similar operations. In both Scan and Search modes, the scanner steps through a set of frequencies and checks for activity. For Scan mode, you program each individual frequency or Talk Group ID you want the scanner to check; for Search mode, you designate a range of frequencies and the scanner will check each individual frequency that falls within that range.
With trunked systems, Scan mode and Search mode are very similar, so the scanner can combine the two in a single operation, switching from one to the other depending on the settings of each individual system:
Scanning trunked systems
∙The scanner scans a system if the ID Scan Search option is set to ID Scan
∙The scanner only checks for activity on unlocked Talk Group IDs that are programmed for this system.
∙If any programmed Talk Group ID becomes active, the scanner switches to the voice channel and monitors the transmission until it ends or until the Delay Time expires.
∙The scanner checks each unlocked Talk Group ID at least once; if the hold time has expired, it moves on to the next system.
Searching trunked systems
∙The scanner searches a system if the ID Scan Search option is set to ID Search.
∙When any Talk Group ID becomes active, the scanner checks to see if that ID is locked out.
∙If the ID is unlocked, the scanner switches to the voice channel and monitors the transmission until it ends or until the Delay Time expires.
∙The scanner monitors the system until the hold time expires, then moves on to the next system.
Default Scan Mode
In the default Scan mode, the scanner checks frequencies in the following order:
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