Radio Shack 20-423 owner manual Introduction

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ˆIntroduction

Thank you for purchasing the RadioShack 200-Channel VHF/AIR/UHF Desktop Scanner. This scanner gives you direct access to over 25,000 frequencies, including those used by police and fire departments, ambulance services, government agencies, air, and amateur radio services. You can select up to 200 channels to scan, and you can change your selection at any time.

The secret to your scanner's ability to scan so many frequencies is its built-in microprocessor. Your scanner also has these special features:

Four Service Banks — let you search preset frequencies in separate fire/police, air, ham radio, and marine banks, to make it easy to locate specific types of calls.

Two-Second Scan Delay — delays scanning for 2 seconds before moving to another channel, so you can hear more replies.

Ten Channel-Storage Banks — let you store up to 20 channels in each of 10 different banks, to group channels so you can more easily identify calls.

20 Monitor Memories — let you temporarily save up to 20 frequencies you locate during a search, so you can move selected frequencies to channel storage later.

Memory Backup — keeps the channel frequencies stored in memory for about 1 hour during a power loss.

HyperSearchTM and HyperScanTM — let you set the scanner to search at up to 50 steps per second and to scan at up to 25 channels per second, to help quickly find interesting transmissions.

Duplicate Frequency Check — automatically notifies you if you are about to store a frequency you have already stored, to help avoid wasting storage space.

Direct Search — lets you search for new and unlisted frequencies starting from a specified frequency.

Priority Channel — lets you program a frequency in the priority channel to be scanned every 2 seconds so you do not miss important calls.

Weather Band (WX) Key — scans seven preprogrammed weather frequencies to keep you informed about current weather conditions.

Weather Alert — automatically sounds the alarm tone to advise of hazardous weather conditions when the scanner detects an alert signal on the local NOAA weather channel.

Lock-Out Function — lets you set your scanner to skip over specified channels or frequencies when scanning or searching.

Liquid Crystal Display — makes it easy to view and change programming information at any time.

Display Backlight — makes the scanner easy to read in low light situations.

Supplied Telescoping Antenna — lets the scanner receive strong local signals.

External Antenna Terminal — lets you connect an external antenna (not supplied) to the scanner.

© 2001 RadioShack Corporation.

All Rights Reserved.

RadioShack and RadioShack.com are trademarks used by RadioShack Corporation.

Hyperscan, Hypersearch, and Adaptaplug are trademarks used by RadioShack Corporation.

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Introduction

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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
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