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LTR ® Reception
LTR ® Tracking
LTR ® (Logic Trunked Radio) 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 specic
talkgroups, which are identied 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 rst
decodes the LTR data included with the transmission. In the ID Search mode, the scanner
stops on the transmission and displays the talkgroup ID on the display. In the ID Scan
mode, the scanner only stops on the transmission if the LTR data matches a talkgroup ID
that you have stored in the bank’s talkgroup ID list and have not locked out.
LTR systems are frequently programmed so that each radio has a unique ID code.
UBCT9 OM 42 12/11/07 3:53:56 PM