Conventional Scanning, Simplex Operation | Uniden UBCD996T specs

Conventional Scanning

Conventional scanning is a relatively simple concept. Each group of users in a conventional system is assigned a single frequency (for simplex systems) or two frequencies (for repeater systems). Any time one of them transmits, their transmission always goes out on the same frequency. Up until the late 1980s, this was the primary way that radio systems operated.

Even today, there are many 2-way radio users who operate using a conventional system:

Aircraft

Amateur radio

UHF/PRS

Broadcast AM/FM/TV stations

Many business radio users

When you want to store a conventional system, all you need to know is the frequencies they operate on. When you are scanning a conventional system, the scanner stops very briefly on each channel to see if there is activity. If there isn’t, the scanner quickly moves to the next channel. If there is, then the scanner pauses on the transmission until it is over.

Simplex Operation

Simplex systems use a single frequency for both transmit and receive. Most radios using this type of operation are limited to line-of-sight operation. This type of radio is frequently used at construction job sites, and with inexpensive consumer radios such as UHF/PRS radios. The range is typically 1-12 kms, depending upon the terrain and many other factors.

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Uniden UBCD996T manual Conventional Scanning, Simplex Operation

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 Menu Program System Select the system How the Scanner’s Controls Are Represented in This ManualEntering Text Within a Menu Option Page Page Understanding Quick Keys Understanding Scanning and the UBCD996TUnderstanding the Scanner’s Memory What is CTCSS/DCS? What is Scanning?What is Searching? Simplex Operation Conventional Scanning Repeater Operation What is Trunk Tracking? Motorola Trunking Trunked ScanningTypes of Trunking Systems Edacs Trunking LTR Trunking Multi-Site Trunking Startup ConfigurationSetup/Operation Information On The Internet Where To Get More InformationCall Motorola/EDACS Included With Your Scanner Base Station Setting Up Your Scanner UBCD996T Mounting Using the Bracket Setting Up an Audio Recording Device or Computer RecordingVehicle Installation Mounting Using the DIN-E Sleeve Page Removing the Scanner from the DIN-E Sleeve Mounting Using ISO Technique Removing the Display Sticker Connecting an Optional AntennaConnecting an Earphone/Headphone Connecting an Extension Speaker Controls, Keys, and Functions + Press Srvc Page Srvc Look At The Display Startup Key Operation Turning On the Scanner and Setting the SquelchOperation Menu Search for… Edit Custom Scanning Systems Selecting System Channel Groups Selecting Systems to Scan Locking/Unlocking Channels ID Scan/ID Search ModeLocking/Unlocking Systems 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 Setting the Backlight Color Adjusting the Key BeepSetting the Audio AGC 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 Menu Program System New System Programming Trunked Radio SystemsEditing the System Name 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 I-Call Operation Setting the Status BitSetting End Code Operation Set Level Setting the Emergency Alert OptionSetting the Edacs ID Format Edit Sys Option Emergency Alert Clearing All Locked Out ID’s Setting the System Record OptionReviewing ID Search Lockouts Editing Channel Groups Adjust the P25 Decode ThresholdEditing Sites Deleting Systems Setting the Site NameProgramming Sites Copying Systems Menu Program System Select a trunked system Edit Site Setting the Site Quick Key Set Frequencies New Setting the Site Startup KeySetting Site Frequencies 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 Locking Out Channel Groups Setting the Group Quick KeyEditing Channels Delete Group Confirm Delete? Yes=E / No= Deleting Channel GroupsCreating a Channel Editing the Channel Name Alpha Tag Edit Frequency Editing FrequenciesEditing the Talk Group ID Set Audio Type Select from All, Digital Only, Analog Only Setting the Audio TypeSelecting CTCSS/DCS Tones Edit Tgid Set Audio Type Analog Only Setting Channel Modulation MethodQuick CTCSS/DCS Save Set Priority Setting Channel AttenuationSetting Channel 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 Quick Search? Yes=E / No= Press .No then to Edit Custom Editing a Custom Search RangeMenu Search for Edit Custom Custom 1, Custom 2 to 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 Menu Close Call Using the Close Call FeatureSetting Close Call Options 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 Set Priority Choose Off, On, or Plus On Menu Srch/CloCall Opt Adjust P25 LevelPriority Scan 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 New Location Setting the OptionsMenu Program 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