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The Basics
LTR mode
You can set your scanner so it decodes the talk group IDs
used with LTR systems. This setting is called the LTR mode.
LTR frequencies are organized in a specifi c order. Each
frequency is assigned a Home Repeater Number (HR). For
the scanner to correctly switch to an active frequency, you
must program the frequencies in HR order, starting with
Memory X01 in the selected bank.
Your PRO-97 scanner features a new tool to help you
determine the correct channel mapping for LTR system
frequencies. The scanner’s LTR Repeater Finder displays the
current Home Repeater when monitoring LTR transmissions
in manual mode.
To determine the correct Home Repeater programming,
enter the system channels of an LTR system in any order. Be
sure to program the mode for each LTR channel to LT. Listen
to each channel one at a time in manual mode and watch for
the decoded LTR data at the bottom of the scanner’s display.
When an LTR transmission occurs, you should see the LTR
talkgroup information on the bottom line of the display, and
a number preceded by “R” in the bottom right hand corner
(i.e., R12). The “R” number is the Home Repeater number
that the current transmission is occurring on. To correctly
program this Home Repeater number into your scanner,
be sure that the channel number in the bank is equal to
the number that is displayed after the “R”. For example, if
you see R12 displayed on a particular LTR frequency, that
frequency needs to be programmed into Channel 12 of
the current bank in order to track the LTR system activity
properly.
LTR systems are trunking systems used primarily by
business or private communications service providers,
such as taxicabs, delivery trucks, and repair services. These
systems encode all trunking information as digital subaudible
data that accompanies each transmission. Users on an