User's Manual

enables the scanner to find the previously stored TGRP objects that need to be checked before declaring
that the found talkgroup is new and should be scanned as a Wildcard “hit”.
If you park on a Wildcard TGRP object in MAN mode, the scanner is not able to “see” the previously stored
TGRP objects, and every call on the trunked radio system will come up as a wildcard hit.
Displaying Memory Usage
Your scanner can report how much free memory is available for new objects, and show how much memory
has been used, and how the memory is allocated to different types of objects. To display the memory usage
report, use the power-on shortcut by pressing 0, then 0 again while the Welcome/Owner screen is
displayed just after the radio is powered on, or, press PGM, then the GLOB softkey to access the Global
configuration menu, then scroll down using the v key until Memory Info:SEL appears in the display. Press
SEL to view the memory usage report. Use the ^v keys to scroll the display.
Search Object Types
A very powerful feature of your PSR-310 is the ability to define different types of frequency searches and
process them while scanning. Frequency searches are just another type of Scannable Object in the
hierarchy of the radio's memory organization, so they can be manipulated and scanned in the same
manner as conventional channels and trunking talkgroups.
There are several different types of frequency searches available in your scanner.
Limit Search Object (LMIT)
A Limit Search Object (LMIT) is a search object that stores the parameters necessary for the radio to
search each frequency within a lower and an upper limit for activity. A LMIT object can be used for
standalone searching - the radio just searches and stops when activity is detected on a frequency, or for
searching that is performed while the radio is scanning. The radio treats LMIT objects just like any other
Scannable Object when in Scan Mode. If you create a LMIT object, assign it to a Scan List and press the
SCAN key, the radio will check for activity on all the Scannable Objects - TGRP objects, CONV objects, and
even LMIT objects. An example of when this might be handy would be when you want to scan for activity
on a collection of TGRP and CONV objects, then run through a range of frequencies to look for activity
there, such as the entire 2 meter amateur radio band or the entire VHF marine radio band. When used in
Scan Mode, this capability is best suited for small ranges of frequencies that contain more frequencies than
practical to program as individual channels. Any size range can be used, but larger ranges that take more
time to search will increase the chances of missed activity on other object types.
Essential Limit Search parameters