Motorola BC796D, APCO25 manual Understanding Banks and Channels, LTR Trunking

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LTR Trunking

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 control information as digital subaudible data that accompanies each transmission, so there is no separate control channel. Users on an LTR system are assigned to specific talkgroups, which are identified 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 first 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 User ID.

LTR systems also need to be programmed into your scanner in channel-order.

Since many LTR systems use only odd-numbered channel slots, you would program these systems using only the corresponding odd-numbered channels in a bank (for example, you would program a system with channels at 1, 3, 5, and 9 into Trunk 2 channels 101, 103, 105, and 109).

Understanding Banks and Channels

The memory in your scanner is organized into 10 banks of 100 channels each. Each bank can contain conventional channels as well as 1 trunking system. For each trunking system, each bank can also store 10 groups of 10 talkgroup ID’s (100 per bank).

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Contents Page Page Contents General Programming Setting Apco 25 Sound Quality Programming LTR Systems Page FCC Wants You To Know Scanning Legally Introduction Page Using this Manual Repeater Operation Understanding ScanningConventional Scanning Simplex OperationMotorola Trunking Trunked ScanningEdacs Trunking LTR Trunking Understanding Banks and ChannelsGetting More Information BC796D Front and Rear ViewIcon Description Display IconsIncluded With Your Scanner Optional Antenna Setting Up Your ScannerConnecting an Antenna Mounting an AntennaMounting the Scanner in Your Vehicle Typical Mounting MethodsApplying Power for Vehicle Installation Connecting an Earphone Desktop InstallationApplying Power Using Standard AC Power Connecting an External SpeakerRemember Connecting the Clone CableConnecting the Tape Recorder Listening SafelySetting the Squelch Basic OperationTurning On the Scanner Locking/Unlocking Banks Using the MenuManually Selecting a Channel Scanning Programmed ChannelsPriority Plus Scanning Locking/Unlocking ChannelsRestoring All Locked Out Channels Priority ScanningLocking the Enter key Dimmer Light SettingControlling How Much Information Appears Turning the Key Beep On/OffTrunk Scanning Options Setting Squelch ModeDisabling the APCO25 Card Muting All AudioHolding on a Single Talkgroup Scanning Only Stored Talkgroups ID ScanMonitoring Talkgroup ID’s Selecting Talkgroup Lists to ScanEdacs Blockout Unlocking All TalkgroupsEdacs Patch Tracking Holding on an Active Frequency Setting Chain SearchSetting Data Skip SearchingAutomatically Storing Frequencies Storing Found FrequenciesAttenuating All Search Ranges Setting Subaudible Tones for SearchingSetting Delay for All Search Ranges Searching for Subaudible TonesSearching for Trunk Systems Setting a Search RangePage Service Search Skip Service SearchUsing Weather Search and Weather Alert Same Using Weather Alert SameSearching for a Weather Broadcast Testing the Weather Alert Bank Configuration Programming Bank InformationAssigning Bank Names Entering Alpha Information General ProgrammingDeleting Frequencies from Channels Transferring Channel InformationPage Assigning a Text Tag Programming Conventional ChannelsSelect a Channel to Program Enter the FrequencySetting the Subaudible Tone Option Setting the DelaySetting Beep Alert Setting the AttenuatorChanging the Frequency Step Setting Priority Channels Setting the Modulation ModeProgramming Trunked Systems Setting Trunking Delay Using I-Call Motorola and Edacs onlyTurning I-Call On and Off for ID Search Multi-Track Operational Details Setting Priority Talkgroups Motorola and Edacs onlyMulti-Track Turning I-Call On for ID ScanPage Using Control Channel Programming Programming Motorola SystemsProgramming Type 2/Digital 800 and 900 MHz Systems Programming Type2/Digital VHF and UHF Systems Programming Type I and IIi Hybrid Systems Toggling End Code Detect Toggling the Status BitSetting Edacs Emergency Alert Programming Edacs SystemsProgramming Edacs Channels Setting Edacs Decimal Mode Programming Apco 25 Systems Setting Apco 25 Sound QualityProgramming LTR Systems Programming Talkgroups Storing Known TalkgroupsStoring Found Talkgroups Deleting Stored Talkgroup ID’s Adding a Text Tag to an ID ListSeeing Talkgroup Activity Using the Remote Interface PC Control ModeCloning Scanner Settings Clone Master Unit Slave Unit Care and Maintenance Troubleshooting Problem Suggestion Specifications Glossary of Terms Page Page Appendix Preset Fleet MapsPreset Map Block Type I Programming Information User Defined Fleet MapsSize Code Restrictions Fleet Map Size CodesNWR-SAME Event Code SVS Severe WX Reverse List BC796D Flow Charts Beep Alert System Option Dimmer Uniden America Corporation One Year Limited WarrantyMemo Memo Memo