Radio Shack 20-501 manual About your scanner

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about your scanner

We use a few simple terms in this manual to explain the features of the scanner. Familiarize yourself with these terms and the scanner's features, and you can put the scanner to work for you right away. Simply determine the type of communications you want to receive, and then set the scanner to scan those communications.

A frequency, expressed in kHz or MHz, is the tuning location of a station. To find active frequencies, you use the search function or refer to a frequency refer- ence.

Besides searching within a selected frequency range, you can also search your scanner's service banks. Service banks are preset groups of frequen- cies categorized by the type of services that use those frequencies. For example, many amateur radio frequencies are located in the HAM service bank.

When you search and find a desired frequency, you can store it into a programmable memory location called a channel. Channels are grouped into channel-storage banks. The scanner has 10 channel- storage banks and each bank has 20 channels. You can scan the channel-storage banks to see if there is activity on the frequencies stored there.

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The Basics

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Contents Read this user’s guide completely before using your scanner Contents Storing frequencies into channels during service search FCC wants you to know Powering your scanner Basics Using rechargeable batteries Basics Basics Using AC power Using vehicle battery power Basics Connecting an optional antenna Setting up your scannerConnecting the antenna Listening safely Connecting an earphone/headphoneConnecting an extension speaker Traffic safetyAttaching the belt clip About your scanner Look at the keypad SCAN/SRCH SVC PGM Look at the display Basics Channel storage banks Understanding banks service banksStoring known frequencies into channels Turning on the scanner and setting squelchOperating your scanner Beyond the Basics Beyond the Basics Searching for and temporarily storing active frequencies Service searchStoring frequencies into channels during service search Manually selecting a channel Scanning the stored channelsSignal stalker Setting the signal stalker options Beyond the Basics Beyond the Basics Using signal stalker About Skywarn SkywarnBeyond the Basics Chain search WX alert Turning on the weather alert featureChain search mode Paging system eliminator Chain search hold modeProgram band select mode Direct entry search Direct entry search hold mode Beyond the Basics Search skip memory Beyond the Basics Delay Locking out channels Turning channel-storage banks on and offPriority Using keylock Wired programming Using the display/key backlight My scanner isn’t working at all. How do I turn it on? Frequently asked questionsBeyond the Basics Flashes on the display. What is it? Error appears on the display. What does it mean? Glossary ALKALINE/RECHARGEABLE Switch Lets youBelt Clip IndexEarphone Connecting Extension Speaker Setting Options Warranty Accessories Beyond the Basics 20-501 07A04