Conventional Scanning, Simplex Operation | Uniden BC95XLT manual

frequency, it stops on that frequency as long as the transmission lasts. If you think the frequency is interesting, you can program it into one of the banks. If not, you can continue to search.

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 1980’s 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

•FRS/GMRS users

•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

UnderstandingFeature HighlightsScanning

15

Image 15

Uniden BC95XLT manual Conventional Scanning, Simplex Operation

Contents

BC95XLT Precautions Precautions Precautions BC95XLT Controls and Display BC95XLT Controls and Display Contents Page FCC Wants You To Know Scanning LegallyFCC Wants You To Know FCC Wants You To Know Introduction Introduction Frequency Range Step Mode Transmission MHz KHz Feature Highlights Feature Highlights Feature Highlights About This Manual Understanding Scanning What is Scanning?What is Searching? UnderstandingFeature HighlightsScanning Simplex Operation Conventional Scanning Where To Obtain More Information Repeater OperationInformation On The Internet For more information about Uniden and our other Included With Your Scanner Included With Your Scanner Setting Up Your Scanner Setting Up Your ScannerUsing Internal Batteries Using Non-Rechargeable Batteries Setting Up Your Scanner Using Rechargeable Batteries Setting Up Your Scanner Using AC Power Connecting the AntennaConnecting an Optional Antenna Connecting an Extension Speaker Connecting an Earphone/Headphone Belt Clip Connecting to a PC About Your Scanner About Your Scanner Hold/ C Look At The Keypad Func + Pgm Look At The Display About Your Scanner Service Banks Understanding BanksChannel-Storage Banks Operation Turning On The Scanner Setting SquelchOperation Storing Known Frequencies Into Channels Searching For and Temporarily Storing Active Frequencies Service Search Scanning the Stored Channels Storing Frequencies into Channels During Service Search Manually Selecting a Channel Special Features Special FeaturesClose CallTM RF Capture Technology Setting the Close Call Options Special Features To Step Chain Search Using Close Call RF Capture Chain Search Hold Mode Chain Search Mode Program Band Select Mode Direct Entry Search Direct Entry Search Hold Mode Search Skip Memory Delay Turning Channel-Storage Banks On and Off Priority Locking Out Channels Using the Display Backlight Using Keylock Troubleshooting Troubleshooting Troubleshooting Resetting the Scanner General Use Care and MaintenanceCleaning Care and Maintenance Birdies Repairs Specifications Specifications Sensitivity 12dB Sinad 21.3 MHz Optional Accessories Optional Accessories One-Year Limited Warranty One-Year Limited Warranty One-Year Limited Warranty Page Page World Without Wires