Radio Shack 20-423 owner manual Operation, Turning on the SCANNER/SETTING Volume and Squelch

Page 14

ˆOperation

TURNING ON THE SCANNER/SETTING VOLUME AND SQUELCH

1.Turn SQUELCH fully counterclockwise until the indicator points to MIN.

2.Slide POWER to ON to turn on the scanner.

3.Turn VOLUME clockwise until you hear a hissing sound.

4.Turn SQUELCH clockwise, just until the hissing sound stops.

Notes:

To listen to a weak or distant station, turn SQUELCH counterclockwise. If reception is poor, turn SQUELCH clockwise to cut out weak transmissions.

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

5.To turn off the scanner when you finish, slide POWER to OFF.

STORING KNOWN

FREQUENCIES INTO

CHANNELS

Good references for active frequencies are the RadioShack Police Call, Aeronautical Frequency Directory, and Maritime Frequency Directory. We update these directories every year, so be sure to get a current copy.

Follow these steps to store frequencies into channels.

1.Press PGM, enter the channel number (1–200) where you want to store a frequency, then press PGM again. The channel number appears.

2.Use the number keys and • to enter the frequency (including the decimal point) you want to store.

3.Press ENTER to store the frequency into the channel.

Notes:

If you made a mistake in Step 2, Error appears and the scanner beeps when you press ENTER.

Simply start again from Step 2.

Your scanner automatically rounds the entered frequency down to the closest valid frequency. For example, if you enter a frequency for 151.473, your scanner accepts it as 151.470.

If you entered a frequency that is already stored in another channel, the scanner beeps three times and displays the lowest channel number where the frequency is already stored, and -dUPL-then the frequency flashes. If you want to store the frequency anyway, press ENTER again. Press MON/CL to clear the frequency.

Press DELAY if you want the scanner to pause 2 seconds on this channel after a transmission ends before it proceeds to the next channel (see “Using the Delay Function” on Page 20). The scanner also stores this setting in the channel.

14

Operation

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Contents Channel VHF/AIR/UHF Desktop Scanner Introduction Dual Conversion helps prevent FCC NoticeScanning Legally Contents Guide to the Action Bands TroubleshootingSpecifications Using Vehicle Battery Power Power SourcesUsing AC Power PreparationConnecting an Outdoor Antenna Connecting AN AntennaConnecting the Supplied Antenna Understanding Your Scanner Look AT the ControlsLook AT the Display Understanding Service BANKS/BANKS Channel Storage BanksAmateur Radio Service BanksAir Marine Channel Frequency MHzFire/Police 45.880 45.900Storing Known Frequencies Into Channels Turning on the SCANNER/SETTING Volume and SquelchOperation Searching the Service Banks Finding and Storing Active FrequenciesUsing Direct Search Listening to a Monitor Memory Frequency Using the Monitor MemoryScanning the Stored Channels Moving a Frequency from a Monitor Memory to a ChannelClearing a Stored Channel Turning Channel Storage Banks on and OFFMonitoring a Stored Channel Scanning OptionsListening to the Marine Bank Weather Channel Frequency ChartUsing the Weather Alert Listening to Weather BandLocking OUT Channels and Frequencies Special FeaturesUsing the Delay Function Locking Out ChannelsReviewing Locked-Out Frequencies Using PriorityTurning the KEY Tone on and OFF Removing All Locked-Out Tags From FrequenciesUnited States Broadcast Band Using a Computer to Program the ScannerBirdie Frequencies Primary Usage Guide to the Action BandsTypical Band Usage VHF BandAbbreviations Services Band AllocationAmateur Band 50-54 MHz Government Band 406-450 MHz Avoiding Image Frequencies Frequency ConversionResetting the Scanner TroubleshootingRESETTING/INITIALIZING the Scanner Care Initializing the ScannerSpecifications Channels of OperationNominal Limited One-Year Warranty