LTR (E. F. Johnson) Mode
This sets the scanner to decode the talk group ID’s used with an LTR system. This is a trunking system used pri- marily by business or private communications service providers, such as taxi cabs, delivery trucks, and repair services. LTR systems encode all trunking information as digital subaudible data that accompanies each transmis- sion. Users on an LTR system are assigned to specific talk groups, which are identified by the radio as a
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 first decodes the LTR data includ- ed with the transmission. In the Open mode, the scanner stops on the transmission and displays the talk group ID on the bottom line of the display. In the Closed mode, the scanner only stops on the transmission if the LTR data matches a talk group ID that you have stored in the bank’s talk group ID list and have not locked out.
LTR systems are frequently programmed so that each ra- dio has a unique ID code.
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