Radio Shack 20-423 owner manual Look AT the Display

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L/O RVW, L/O

WX — scans through the seven preprogrammed weather channels.

SCAN — scans through the programmed channels.

MANUAL — stops scanning and lets you directly enter a channel number.

(Lock Out Review/Lock Out) — lets you review locked-out frequencies, or lets you lock out selected channels/ frequencies so they will not be scanned or searched.

8#and 9 — enters the direction the scanner will search or scan.

MON/CL (Monitor/Clear) — accesses the 20 monitor memories or clears an incorrect entry.

PGM (Program) — programs frequencies into channels.

Number Keys — each key has a single-digit label and a range of numbers. Use the digits on the keys to enter the numbers for a channel or a frequency. Use the range of numbers above the key (21–40, for example) to select the channel in a channel-storage bank.

DELAY/. —- programs a 2-second delay for the selected channel, or enters a decimal point (necessary when programming frequencies).

ENTER —- enters frequencies into channels.

A LOOK AT THE DISPLAY

The display shows the scanner’s current operating mode.

FD/PD — appears when you search the fire/ police service bank.

BANK — appears with numbers (1–10). Bank numbers with a bar under them show which ones are turned on for scanning.

AIR — appears when you search the air service bank.

HAM — appears when you search the ham radio service bank.

MARINE — appears when you search the marine service bank.

8or 9 — indicates the search or scan direction.

M — flashes with a number (1–20) to show which monitor memory you are listening to.

CH —- the digits that precede this indicator (1–200 and P) show which channel the scanner is tuned to.

L/O — appears when you manually select a channel you locked out while scanning or when you review a locked out frequency.

WX — appears when you scan the weather channels.

Understanding Your Scanner

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Contents Channel VHF/AIR/UHF Desktop Scanner Introduction FCC Notice Scanning LegallyDual Conversion helps prevent Contents Troubleshooting SpecificationsGuide to the Action Bands Using AC Power Power SourcesUsing Vehicle Battery Power PreparationConnecting AN Antenna Connecting the Supplied AntennaConnecting an Outdoor Antenna Look AT the Controls Understanding Your ScannerLook AT the Display Channel Storage Banks Understanding Service BANKS/BANKSService Banks AirAmateur Radio Channel Frequency MHz Marine45.880 45.900 Fire/PoliceTurning on the SCANNER/SETTING Volume and Squelch OperationStoring Known Frequencies Into Channels Finding and Storing Active Frequencies Searching the Service BanksUsing Direct Search Scanning the Stored Channels Using the Monitor MemoryListening to a Monitor Memory Frequency Moving a Frequency from a Monitor Memory to a ChannelMonitoring a Stored Channel Turning Channel Storage Banks on and OFFClearing a Stored Channel Scanning OptionsUsing the Weather Alert Weather Channel Frequency ChartListening to the Marine Bank Listening to Weather BandUsing the Delay Function Special FeaturesLocking OUT Channels and Frequencies Locking Out ChannelsTurning the KEY Tone on and OFF Using PriorityReviewing Locked-Out Frequencies Removing All Locked-Out Tags From FrequenciesUsing a Computer to Program the Scanner Birdie FrequenciesUnited States Broadcast Band Typical Band Usage Guide to the Action BandsPrimary Usage VHF BandBand Allocation Abbreviations ServicesAmateur Band 50-54 MHz Government Band 406-450 MHz Frequency Conversion Avoiding Image FrequenciesTroubleshooting RESETTING/INITIALIZING the ScannerResetting the Scanner Initializing the Scanner CareChannels of Operation SpecificationsNominal Limited One-Year Warranty
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