Radio Shack ADV0801 Owner's Manual page 24

ADV0801 Owner's Manual Draft
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
Much like the other object types, there are only a few parameters that are essential in order for
a search range to function correctly. The FrLO: and FrHi: lower and upper frequency limits
must be specified, so the scanner will know where to begin the search, and where to end the
search and start again. The Mode: must be set properly, although by default the scanner will
automatically choose the receive mode that most likely applies to the active frequency as the
search proceeds. And again, we recommend that you give the LMIT object a name in the Tag:
field so that you can easily find or identify it later.
To create a new LMIT object, press PGM to place your scanner into Program Mode, then press
the NEW softkey, then press the SRCH softkey to view the available Search types, then press
the LMIT softkey. Use the data entry methods you have already learned for CONV and TGRP
object setup to specify the FrLO: and FrHi: limits, and provide a name for your search in the
Tag: field. When finished, press the Save softkey to store your LMIT search as a new object.
Once your LMIT object is saved, you can use it while scanning, or launch the LMIT search by
itself by pressing the SRCH softkey (note that we are referring to the SRCH softkey, and not the
SRCH key on the keypad) after navigating to the LMIT object in Manual Mode.
When the LMIT search stops on an active frequency, the display will appear as follows:
LCD illustration
Press PSE to hold on the active frequency. To resume, press PSE again.
HINT: It can take some time for the Pro-106 to process all of the frequencies in a LMIT search.
You can experiment with different size frequency ranges to find a LMIT search setup that does
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