Radio Shack PRO-72 owner manual Operation, Turning on the SCANNER/ Setting Volume and Squelch

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OPERATION

TURNING ON THE SCANNER/ SETTING VOLUME AND SQUELCH

Note: Make sure the scanner’s antenna is connected be- fore you turn it on.

1. Turn SQUELCH fully counterclockwise.

VO L UME SQ UEL CH

O F F M A X M I N MA X

2.Turn VOLUME clockwise until it clicks and you hear a hissing sound.

VO L UME SQ UEL CH

O F F M A X M I N MA X

3.Turn SQUELCH clockwise until the hissing sound stops.

Notes:

If the scanner picks up unwanted, partial, or very weak transmissions, turn SQUELCH clockwise to decrease the scanner’s sensitivity to these signals. If you want to listen to a weak or distant station, turn SQUELCH counterclockwise.

If SQUELCH is adjusted so you always hear a hissing sound, the scanner does not scan properly.

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Image 26 Contents
PRO-72 50-Channel Portable Scanner Features Serial Number Page FCC Notice Scanning Legally Contents Care and Maintenance Specifications Special FeaturesTroubleshooting General Guide to ScanningPreparation Power SourcesUsing Batteries Page Page Using Standard AC Power Using Vehicle Battery Power Charging a Rechargeable Battery Pack Connecting the Antenna Connecting AN EARPHONE/ Headphones Connecting an Optional AntennaTraffic Safety Listening SafelyConnecting AN Extension Speaker Using the Belt ClipYour Scanner Look AT the Keypad Page Look AT the Display Page Understanding BANDS/MONITOR Memory Search BandsMonitor Memory Turning on the SCANNER/ Setting Volume and Squelch OperationStoring Active Frequencies Manually Storing FrequenciesPage Band Search Page Direct Search Moving a Frequency from the Monitor Memory to a Channel Monitoring a Stored ChannelScanning the Channels Listening to the Monitor Memory Clearing a ChannelListening to a Weather Band Locking OUT a Channel Special FeaturesDelay Using the Display Backlight Using the Keylock Turning the KEY Tone on and OFFOther Weather Frequencies Guide to FrequenciesUS Weather Frequencies Ham Radio FrequenciesBirdie Frequencies 486.400 499.200Typical Band Usage Guide to the Action BandsUnited States Broadcast Bands VHF BandPrimary Usage ActivitiesSpecified Intervals Band AllocationVery High Frequency VHF Government Band Ultra High Frequency UHF Frequency Conversion Troubleshooting Problem Possible Causes RemediesProblem Possible Remedies Causes RESETTING/INITIALIZING the Scanner Resetting the ScannerInitializing the Scanner Care and Maintenance Page Specifications US Patent Numbers Limited One-Year Warranty
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