LTR Trunking | Uniden UBCD996T specification

agency is then subdivided up to 16 times to provide fleet identification, and then 8 more times to identify subfleets.

For example, the complete AFS for the Police Department West District’s dispatch channel might be 01-062. 01 identifies the agency as the police department, 06 identifies the fleet as the West district, and 2 identifies the subfleet as the dispatch channel. While these assignments are somewhat arbitrary and vary from system to system, there are many resources on the web for finding the assignments for most systems. Because of the logical hierarchy of the AFS system, your UBCD996T lets you assign wildcard ID’s that let you, for example, use only one ID memory to identify all units in either an agency or a fleet.

EDACS SCAT — (Single Channel Autonomous Trunking) systems operate on a single channel and alternate control data with analog voice traffic. While your UBCD996T cannot track ID’s in this system, it can eliminate the control data so that all you hear is the voice transmissions when you monitor this type of system.

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 sub audible data that accompanies each transmission, so there is no separate control channel. Users on an LTR system are assigned to specific talk groups, 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 talk group ID on the display. In the ID scan mode, the scanner only stops on the transmission if the LTR data matches a talk group ID that you have stored in the talk group ID list and have not locked out. LTR systems are frequently programmed so that each radio has a unique user ID.

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Uniden UBCD996T manual LTR Trunking

Contents

UBCD996T Earphone Warning Precautions Power Related Issues Table of Contents Optimizing P25 Performance Programming Your Scanner Using the Close Call Feature 100 Care and Maintenance 125 This page is intentionally blank This page is intentionally blank Introduction General Feature HighlightsPage GPS PC Control and Cloning SearchAuto Store Priority Memory Storage Limits Search Lockout Limits About This Manual Using the Scroll Control How the Scanner’s Controls Are Represented in This Manual Entering Text Within a Menu OptionMenu Program System Select the system Page Page Understanding Scanning and the UBCD996T Understanding the Scanner’s MemoryUnderstanding Quick Keys What is Scanning? What is Searching?What is CTCSS/DCS? Simplex Operation Conventional Scanning Repeater Operation What is Trunk Tracking? Trunked Scanning Types of Trunking SystemsMotorola Trunking Edacs Trunking LTR Trunking Startup Configuration Setup/OperationMulti-Site Trunking Where To Get More Information Call Motorola/EDACSInformation On The Internet Included With Your Scanner Base Station Setting Up Your Scanner UBCD996T Setting Up an Audio Recording Device or Computer Recording Vehicle InstallationMounting Using the Bracket Mounting Using the DIN-E Sleeve Page Removing the Scanner from the DIN-E Sleeve Mounting Using ISO Technique Connecting an Optional Antenna Connecting an Earphone/HeadphoneRemoving the Display Sticker Connecting an Extension Speaker Controls, Keys, and Functions + Press Srvc Page Srvc Look At The Display Turning On the Scanner and Setting the Squelch OperationStartup Key Operation Menu Search for… Edit Custom Scanning Systems Selecting System Channel Groups Selecting Systems to Scan ID Scan/ID Search Mode Locking/Unlocking SystemsLocking/Unlocking Channels Quick-Storing Channels or Talk Group ID’s Tgid Holding On a SystemHolding On a Channel Quickly Storing an ID During ID Search Trunking Activity Indicators Toggling the Display Mode Trunked System Edit Sys Option Adjust P25 LevelOptimizing P25 Performance Conventional SystemPage Using the Menu Menu Settings Set Backlight Set Dimmer Programming General SettingsSetting and Using the Backlight Setting the Dimmer Adjusting the Key Beep Setting the Audio AGCSetting the Backlight Color Setting the Position Format Setting the Display OrientationAdjusting the Display Contrast Setting the GPS Format Setting the Distance Units Setting the Serial Port SpeedSetting the Time Format Setting the Time Zone Viewing the Firmware Version and Electronic Serial Number Displaying Scanner InformationInitializing the Scanner’s Memory Viewing Memory Used Restore Preprogram List? Yes=E/No= Connecting Your Scanner to a Personal ComputerWired Cloning Volume/Squelch with PC ControlPage General Notes Programming Your ScannerPage Page Page Programming Conventional Systems Programming Trunked Radio Systems Editing the System NameMenu Program System New System Edit Name Specifying the Correct System TypeProgramming System Options Editing the System Quick Key Setting the System Lockout Setting the Startup Key Setting Data Skip Setting the System Hold TimeSetting ID Scan/ID Search Setting Channel Delay Time Edit Sys Option Edit Fleet Map Setting Location InformationSetting the Fleet Map Program System Setting the Status Bit Setting End Code OperationSetting I-Call Operation Set Level Setting the Emergency Alert OptionSetting the Edacs ID Format Edit Sys Option Emergency Alert Setting the System Record Option Reviewing ID Search LockoutsClearing All Locked Out ID’s Adjust the P25 Decode Threshold Editing SitesEditing Channel Groups Deleting Systems Setting the Site NameProgramming Sites Copying Systems Menu Program System Select a trunked system Edit Site Setting the Site Quick Key Setting the Site Startup Key Setting Site FrequenciesSet Frequencies New Set Modulation Setting Site ModulationSetting Site Attenuation Setting Site Lockout Editing the Band Plan VHF and UHF only Setting Site Hold Time Edit Site current Setting P25 Band PlansSetting Control-Channel Only Mode Except for P25 Edit Band Plan Adjust P25 Level Setting Site Location Information Deleting Sites Setting Up a Channel GroupProgramming Channel Groups Editing a Channel Group Name Setting the Group Quick Key Editing ChannelsLocking Out Channel Groups Delete Group Confirm Delete? Yes=E / No= Deleting Channel GroupsCreating a Channel Editing the Channel Name Alpha Tag Editing Frequencies Editing the Talk Group IDEdit Frequency Set Audio Type Select from All, Digital Only, Analog Only Setting the Audio TypeSelecting CTCSS/DCS Tones Edit Tgid Setting Channel Modulation Method Quick CTCSS/DCS SaveSet Audio Type Analog Only Setting Channel Attenuation Setting Channel PrioritySet Priority Set Alert Setting Channel Alert Edit Group Edit Channel Setting LockoutCopying a Channel Deleting a Channel Quick Search? Yes=E / No= Service SearchMenu Search for Service Search Searching and Storing Quick Search? Yes=E / No= Press .No then to Custom Search Quick SearchCustom Search Menu Search for Custom Search Editing a Custom Search Range Menu Search for Edit Custom Custom 1, Custom 2 to CustomQuick Search? Yes=E / No= Press .No then to Edit Custom Search With Scan Method Two Set Delay TimeEditing a Service Search Method One Saving a Found Channel Quick Save Set AttenuatorSet Record Assigning a Search Range to a Search Key Menu Search for Search and Store Auto Search and StoreSelecting a System Conventional Search and Store Trunked Search and Store Using the Close Call Feature Setting Close Call OptionsMenu Close Call 10/15/30/45/60 sec Close Call Hits with Scan Close Call Hits 103 Managing Locked-Out Frequencies Search and Close Call Options Screening Out Broadcast Sources Unlocking All FrequenciesReviewing Locked-Out Frequencies Searching for Subaudible Tones Srch/CloCall Opt Finding Repeater Output Frequencies Menu Srch/CloCall Opt Max Auto Store Setting the Maximum Auto Store ValueSetting the Modulation Type Repeater Find On or Off Menu Srch/CloCall Opt Set Data Skip Setting AttenuationSetting Data Skip Menu Srch/CloCall Opt Set Attenuator Adjust P25 Level Setting the Delay TimeSetting the Search Frequency Step Setting Record Menu Srch/CloCall Opt Adjust P25 Level Priority ScanMenu Set Priority Choose Off, On, or Plus On This page is intentionally blank 112 113 Fire Tone-Out Setting Tone-Out StandbySetting Up Tone-Out Menu Tone-Out for Tone-Out Setup 115 Tone-Out Multi-Channel Monitoring Initial GPS Operation Connecting Your Scanner to a GPS DeviceLocation-Based GPS Scanning GPS Compatibility 118 Non-Radio Location Based GPS Features Setting the Options Menu Program LocationNew Location Delete Location Deleting a Location GPS Display Mode GPS Review Location Mode 124 Location Care and MaintenanceCleaning General Use Troubleshooting 127 128 Frequency Range MHz Specifications NFM 131 Reference Preset Fleet Maps 133 Type I Programming Information User Defined Fleet Maps Size Code Restrictions 136 137 138 139 Index LTR CTCSS/DCS 143 Parts Covered 145 Memo 147