Radio Shack PRO-2055 User Manual page 26

The Basics
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 LTR system are assigned to
specifi c talk groups, which are identifi ed by the radio
as six-digit numbers. These numbers are in the form
AHHUUU, where:
A = Area code (0 or 1)
H = Home repeater (01 through 20)
U = User ID (000 through 254)
When the scanner receives a transmission on a channel
set to the LTR mode, it fi rst decodes the LTR data
included with the transmission. In the open mode,
the scanner stops on the transmission and displays
26