Radio Shack 20-521 owner manual Search Skip Memory

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When the scanner stops on a transmission, quickly press either:

HOLD to stop searching so you can listen to the transmission. HOLD appears.

MON/CLEAR to store the displayed frequency into the current monitor memory.

To release hold and continue searching, press HOLD or hold down t or s for at least 1 second. Or, if you did not press HOLD, simply press t or s to continue searching.

Note: Because there are many different frequencies al- located to fire and police departments, it takes several minutes to search all these frequencies.

Search Skip Memory

You can skip up to 20 specified frequencies during a limit or direct search and up to 20 specified frequencies during a service bank search. This lets you avoid un- wanted frequencies or ones you have already stored in a channel.

To skip a frequency, press S/S when the scanner stops on the frequency dur- ing a limit, direct, or service

search.

scanner stores

the

in memory

and

re-

sumes the search.

To clear a single frequency from skip memory so the scanner once again stops on it during a limit, direct, or service bank search:

1.Press HOLD to hold the search.

2.Press t or s to select the frequency. L/O ap-pears.

3.Press S/S. L/O disappears.

To clear all the skip frequencies at once while search- ing, press HOLD, then hold down S/S until the scanner beeps twice (about 3 seconds).

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Contents PRO-91 150-Channel Handheld Trunking Scanner Features Page Frequency Step Transmission Range MHz KHz Scanning Legally FCC NoticeContents General Guide to Scanning Special FeaturesTrunk Tracking Page Preparation Power SourcesUsing Internal Batteries Page Charging Nickel-Cadmium Batteries Using AC Power Using Vehicle Battery Power Plug the adapter’s barrel plug into your scanner’s Connecting an Optional Antenna Connecting the AntennaListening Safely Connecting AN EARPHONE/ HeadphonesTraffic Safety Attaching the Belt Clip Connecting AN Extension SpeakerAbout Your Scanner Look AT the Keypad Look AT the Display Page Channel Storage Banks Service BanksUnderstanding Banks Monitor Memories Operation Turning on the Scanner and Setting SquelchStoring Known Frequencies Into Channels Limit Search Searching for and Temporarily Storing Active FrequenciesDirect Search Service Bank Search Search Skip Memory Moving a Frequency from a Monitor Memory to a Channel Listening to the Monitor MemoriesManually Selecting a Channel Scanning the Stored ChannelsPage Turning CHANNEL-STORAGE Banks on and OFF Special FeaturesDelay Priority Locking OUT ChannelsPage Using the Display Backlight Using the KeylockChanging Search Speeds Normal Search HypersearchTurning the KEY Tone OFF/ON Turning the Battery Save Function OFF/ONSkipping Data Signals Types of Trunking Systems Trunk TrackingSetting the Scanner to the Trunk Tracking Mode Storing Trunked Frequencies Setting Squelch for the Trunk Tracking ModePage Scanning a Trunked Bank Temporarily Storing an ID into the Monitor ID Memory Monitoring an Active IDUnlocking All IDs Locking Out IDsUnlocking a Single ID Monitoring IDs Using Trunk Tracking Scan DelayChannel Activity Bars Manually Storing IDs into Scan Lists Scan ListsDeleting a Stored ID Moving IDs to Scan ListsScanning Type I and Hybrid Trunked Systems Scanning the Scan ListsProgramming a Fleet Map Size Fleets Subfleets IDs Blocks Used E1P1 E1P2 E1P3 Size E1P4 E1P5 E1P6 Size Selecting a Preset Fleet Map Programming a Hybrid System Guide to Frequencies General Guide to ScanningNational Weather Frequencies Canadian Weather FrequenciesTypical Band Usage Guide to the Action BandsPrimary Usage VHF BandAbbreviations Band AllocationVery High Frequency VHF Ultra High Frequency UHF Frequency Conversion Problem Possible Remedy Cause TroubleshootingError Adjust squelch for Resetting the Scanner Care and Maintenance Specifications Power Requirement AA Alkaline Batteries 6.0 VDC Page Page RadioShack Division of Tandy Corporation Fort Worth, Texas Limited One-Year Warranty