Radio Shack 20-423 owner manual Using a Computer to Program the Scanner, Birdie Frequencies

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2.While you hold down 2 and ENTER, turn on the scanner. The display shows oFF tonE or on tonE. Then release the keys.

USING A COMPUTER TO PROGRAM THE SCANNER

You can connect your scanner to a personal computer and program frequencies into the scanner from the computer using an optional cable and software.

Note: The necessary cable and software, and additional information about using your personal computer to program your scanner, are available at your local RadioShack store.

BIRDIE FREQUENCIES

Every scanner has birdie frequencies. Birdies are signals created inside the scanner’s receiver. These operating frequencies might interfere with transmissions on the same frequencies. If you program one of these frequencies, you hear only noise on that frequency. If the interference is not severe, you might be able to turn SQUELCH clockwise to cut out the birdie.

To find the birdies in your scanner, follow these steps.

1.Disconnect the antenna and move it away from the receiver. Make sure that no other operating radio or TV sets are nearby.

2.Search in each frequency band from the lowest frequency to the highest. If the search stops on a frequency, but you hear no sound, chances are you have located a birdie. Note all birdie frequencies for reference.

The known birdie frequencies to watch for are:

29.800

122.9375

388.3875

30.375

128.000

398.5625

32.075

128.375

414.6125

38.400

136.5875

426.7875

40.000

149.400

431.1625

40.980

152.655

441.3875

51.200

160.470

457.4375

112.4875

162.200

462.7875

115.200

168.495

478.8375

120.5125

384.550

 

UNITED STATES

BROADCAST BAND

In the United States, there are several broadcast bands. The standard AM and FM bands are probably the most well known. There are also four television audio broadcast bands — the lower three transmit on the VHF band and the fourth transmits on the UHF band. You can use your scanner to monitor the 470–512 MHz portion of the UHF band.

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Special Features

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Contents Channel VHF/AIR/UHF Desktop Scanner Introduction Scanning Legally FCC NoticeDual Conversion helps prevent Contents Specifications TroubleshootingGuide to the Action Bands Using Vehicle Battery Power Power SourcesUsing AC Power PreparationConnecting the Supplied Antenna Connecting AN AntennaConnecting an Outdoor Antenna Understanding Your Scanner Look AT the ControlsLook AT the Display Understanding Service BANKS/BANKS Channel Storage BanksAir Service BanksAmateur Radio Marine Channel Frequency MHzFire/Police 45.880 45.900Operation Turning on the SCANNER/SETTING Volume and SquelchStoring Known Frequencies Into Channels 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 FrequenciesBirdie Frequencies Using a Computer to Program the ScannerUnited States Broadcast Band 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/INITIALIZING the Scanner TroubleshootingResetting the Scanner Care Initializing the ScannerSpecifications Channels of OperationNominal Limited One-Year Warranty
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