Radio Shack 20-521 owner manual Using Vehicle Battery Power

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1.Turn VOLUME/OFF counterclockwise until it clicks to make sure the power is turned off.

2.Plug the adapter’s 3.4 mm outside diameter/1.3 mm inside diameter barrel plug into your scanner’s

POWER jack.

3.Plug the other end of the adapter into a standard AC outlet.

If rechargeable batteries are installed and ALKALINE

JACK NI-CDis set to NI-CD, the adapter powers the scanner and recharges the batteries at the same time.

Using Vehicle Battery Power

You can power the scanner from your vehicle’s battery power using an optional DC adapter such as Cat. No. 270-1560.

Cautions:

•The recommended DC adapter supplies 9 volts and delivers at least 300 milliamps. It has a barrel plug with a center negative tip that correctly fits the scanner’s POWER jack. Using an adapter that does not meet these specifications could damage the scanner or the adapter.

•To protect your vehicle’s electrical system, always plug the adapter into the scanner before you plug it into your vehicle’s cigarette-lighter socket. Always unplug the adapter from the vehicle’s cigarette- lighter socket before you unplug it from the scan- ner.

•If batteries are installed, make sure the battery switch inside the battery compartment is set to the correct position (see “Using Internal Batteries” on Page 9).

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Contents PRO-91 150-Channel Handheld Trunking Scanner Features Page Frequency Step Transmission Range MHz KHz Scanning Legally FCC NoticeContents Trunk Tracking Special FeaturesGeneral Guide to Scanning Page Using Internal Batteries Power SourcesPreparation 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 AntennaTraffic Safety Connecting AN EARPHONE/ HeadphonesListening Safely Attaching the Belt Clip Connecting AN Extension SpeakerAbout Your Scanner Look AT the Keypad Look AT the Display Page Understanding Banks Service BanksChannel Storage 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 Delay Special FeaturesTurning CHANNEL-STORAGE Banks on and OFF 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 a Single ID Locking Out IDsUnlocking All IDs 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