Optimizing P25 Performance, Conventional System | Uniden UBCD996T

Optimizing P25 Performance

You can optimize the scanner’s performance with digital APCO 25 systems. Follow these steps for each system where you can hear APCO 25 traffic.

Notes:

These steps work only when you can clearly receive the system. If you are in a weak-signal area or receive interference, these steps will not work. These steps do not compensate for weak signals or signals subject to interference.

If you set an incorrect decode threshold level in Step 5, the scanner might stop decoding all digital signals in the system. If this happens, change the setting to a value between 8 and 12 then repeat these steps.

Conventional System

[MENU] Program System

Select the system

Edit Sys Option

Adjust P25 Level

Trunked System

[MENU] Program System

Select the system

Edit Site

Select the site

Adjust P25 Level

Make sure the system’s P25 Level option is set to Auto.

Press [HOLD/RESUME] on an active digital channel on the system. HOLD appears on the display.

Press then [VOL]. disappears and APCO Threshold Adjust Mode appears at the bottom of the display.

This number shows the current threshold setting.

Threshold voltage levels.

*In Manual mode or Auto mode, if you rotate the knob clockwise, the threshold level is adjusted wider than default level. If you rotate the knob counterclockwise, the level is adjusted narrower.

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Uniden UBCD996T manual Optimizing P25 Performance, Conventional System, Trunked System, Edit Sys Option Adjust P25 Level

Contents

UBCD996T Precautions Earphone Warning 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 Feature Highlights GeneralPage GPS Search Auto StorePriority PC Control and Cloning Memory Storage Limits Using the Scroll Control Search Lockout Limits About This Manual Entering Text Within a Menu Option How the Scanner’s Controls Are Represented in This ManualMenu Program System Select the system Page Page Understanding the Scanner’s Memory Understanding Scanning and the UBCD996TUnderstanding Quick Keys What is Searching? What is Scanning?What is CTCSS/DCS? Conventional Scanning Simplex Operation What is Trunk Tracking? Repeater Operation Types of Trunking Systems Trunked ScanningMotorola Trunking Edacs Trunking LTR Trunking Setup/Operation Startup ConfigurationMulti-Site Trunking Call Motorola/EDACS Where To Get More InformationInformation On The Internet Included With Your Scanner Setting Up Your Scanner Base Station UBCD996T Vehicle Installation Setting Up an Audio Recording Device or Computer RecordingMounting Using the Bracket Mounting Using the DIN-E Sleeve Page Mounting Using ISO Technique Removing the Scanner from the DIN-E Sleeve Connecting an Earphone/Headphone Connecting an Optional AntennaRemoving the Display Sticker Connecting an Extension Speaker Controls, Keys, and Functions + Press Srvc Page Srvc Look At The Display Operation Turning On the Scanner and Setting the SquelchStartup Key Operation Scanning Systems Menu Search for… Edit Custom Selecting Systems to Scan Selecting System Channel Groups Locking/Unlocking Systems ID Scan/ID Search ModeLocking/Unlocking Channels Holding On a System Holding On a ChannelQuickly Storing an ID During ID Search Quick-Storing Channels or Talk Group ID’s Tgid Trunking Activity Indicators Toggling the Display Mode Edit Sys Option Adjust P25 Level Optimizing P25 PerformanceConventional System Trunked SystemPage Using the Menu Programming General Settings Setting and Using the BacklightSetting the Dimmer Menu Settings Set Backlight Set Dimmer Setting the Audio AGC Adjusting the Key BeepSetting the Backlight Color Setting the Display Orientation Adjusting the Display ContrastSetting the GPS Format Setting the Position Format Setting the Serial Port Speed Setting the Time FormatSetting the Time Zone Setting the Distance Units Displaying Scanner Information Initializing the Scanner’s MemoryViewing Memory Used Viewing the Firmware Version and Electronic Serial Number Connecting Your Scanner to a Personal Computer Wired CloningVolume/Squelch with PC Control Restore Preprogram List? Yes=E/No=Page Programming Your Scanner General NotesPage Page Page Programming Conventional Systems Editing the System Name Programming Trunked Radio SystemsMenu Program System New System Specifying the Correct System Type Programming System OptionsEditing the System Quick Key Edit Name Setting the Startup Key Setting the System Lockout Setting the System Hold Time Setting ID Scan/ID SearchSetting Channel Delay Time Setting Data Skip Setting Location Information Setting the Fleet MapProgram System Edit Sys Option Edit Fleet Map Setting End Code Operation Setting the Status BitSetting I-Call Operation Setting the Emergency Alert Option Setting the Edacs ID FormatEdit Sys Option Emergency Alert Set Level Reviewing ID Search Lockouts Setting the System Record OptionClearing All Locked Out ID’s Editing Sites Adjust the P25 Decode ThresholdEditing Channel Groups Setting the Site Name Programming SitesCopying Systems Deleting Systems Setting the Site Quick Key Menu Program System Select a trunked system Edit Site Setting Site Frequencies Setting the Site Startup KeySet Frequencies New Setting Site Modulation Setting Site AttenuationSetting Site Lockout Set Modulation Setting Site Hold Time Editing the Band Plan VHF and UHF only Setting P25 Band Plans Setting Control-Channel Only Mode Except for P25Edit Band Plan Edit Site current Setting Site Location Information Adjust P25 Level Setting Up a Channel Group Programming Channel GroupsEditing a Channel Group Name Deleting Sites Editing Channels Setting the Group Quick KeyLocking Out Channel Groups Deleting Channel Groups Creating a ChannelEditing the Channel Name Alpha Tag Delete Group Confirm Delete? Yes=E / No= Editing the Talk Group ID Editing FrequenciesEdit Frequency Setting the Audio Type Selecting CTCSS/DCS TonesEdit Tgid Set Audio Type Select from All, Digital Only, Analog Only Quick CTCSS/DCS Save Setting Channel Modulation MethodSet Audio Type Analog Only Setting Channel Priority Setting Channel AttenuationSet Priority Setting Channel Alert Set Alert Setting Lockout Copying a ChannelDeleting a Channel Edit Group Edit Channel Service Search Menu Search for Service SearchSearching and Storing Quick Search? Yes=E / No= Quick Search Custom SearchMenu Search for Custom Search Quick Search? Yes=E / No= Press .No then to Custom Search Menu Search for Edit Custom Custom 1, Custom 2 to Custom Editing a Custom Search RangeQuick Search? Yes=E / No= Press .No then to Edit Custom Search With Scan Set Delay Time Editing a Service SearchMethod One Method Two Set Attenuator Set RecordAssigning a Search Range to a Search Key Saving a Found Channel Quick Save Auto Search and Store Selecting a SystemConventional Search and Store Menu Search for Search and Store Trunked Search and Store Setting Close Call Options Using the Close Call FeatureMenu Close Call 10/15/30/45/60 sec Close Call Hits Close Call Hits with Scan 103 Search and Close Call Options Managing Locked-Out Frequencies Unlocking All Frequencies Reviewing Locked-Out FrequenciesSearching for Subaudible Tones Screening Out Broadcast Sources Finding Repeater Output Frequencies Srch/CloCall Opt Setting the Maximum Auto Store Value Setting the Modulation TypeRepeater Find On or Off Menu Srch/CloCall Opt Max Auto Store Setting Attenuation Setting Data SkipMenu Srch/CloCall Opt Set Attenuator Menu Srch/CloCall Opt Set Data Skip Setting the Delay Time Setting the Search Frequency StepSetting Record Adjust P25 Level Priority Scan Menu Srch/CloCall Opt Adjust P25 LevelMenu Set Priority Choose Off, On, or Plus On This page is intentionally blank 112 113 Setting Tone-Out Standby Setting Up Tone-OutMenu Tone-Out for Tone-Out Setup Fire Tone-Out 115 Tone-Out Multi-Channel Monitoring Connecting Your Scanner to a GPS Device Location-Based GPS ScanningGPS Compatibility Initial GPS Operation 118 Non-Radio Location Based GPS Features Menu Program Location Setting the OptionsNew Location Deleting a Location Delete Location GPS Display Mode GPS Review Location Mode 124 Care and Maintenance CleaningGeneral Use Location Troubleshooting 127 128 Specifications Frequency Range MHz NFM 131 Preset Fleet Maps Reference 133 User Defined Fleet Maps Type I Programming Information Size Code Restrictions 136 137 138 139 Index LTR CTCSS/DCS 143 Parts Covered 145 Memo 147