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Radio Shack 20-163 manual Scanner Setup, To set the attenuator mode

Models: 20-163

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With the attenuator on, the scanner might not receive weak signals. You can reduce interference using two attenuator modes:

•Global – (Default) The attenuator setting is applied to all channels, bands, or groups.

•Normal – Lets you set the attenuator in each channel, band, or group.

You cannot set the attenuator while scanning.

To set the attenuator mode:

1. To set Global mode, press FUNC and then ATT. On the display “G” appears.”

2. To set the attenuator for each channel, press FUNC and then ATT. On the display “G” disappears. For each channel:

•On – Press ATT. “A” appears.

•Off – Press ATT again. “A” disappears.”

Scanner Setup

A frequency, expressed in kHz or MHz, is the tuning location of a station.

Your scanner saves frequencies to channels and groups the channels into banks. The scanner’s 10 banks each hold 100 channels (1,000 channels total).

The scanner is preset to the most common AM or FM receive modes for each frequency range. However, some amateur transmissions may operate in a different mode. If the transmission sounds weak or distorted, you may have the channel set to the wrong receive mode:

AM – Amplitude Modulation, primarily used for aircraft, military, some amateur and government transmissions.

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Radio Shack 20-163 manual Scanner Setup, To set the attenuator mode

Contents

What’s Included Mobile / Base Radio ScannerContents Contents Your Scanner Pause EXT SP Bracket Mounting Installing Your ScannerSetting Up a Mobile Base To you use the scanner on a flat surfaceDashboard Installation Connecting the Antenna To attach the supplied antennaPowering Your Scanner Wall OutletVehicle Power Socket Vehicle DirectHeadphones and Speakers Keytones and BrightnessDelay Squelch and AttenuatorScanner Setup To set the attenuator modeDefining a Channel To define a channelCopying a Frequency To copy a frequencyTo delete all saved frequencies in a bank Deleting Saved FrequenciesTo delete a saved frequency To define a channel’s Ctcss or DCS codeTo clone the scanner data Scanner CloningTo save a Ctcss or DCS code Search Banks SearchingSeek Search To activate Seek SearchTo search banks SR0-SR2 To activate Zeromatic ZeromaticProgramming a Search Range To program the search range of Bank SR7Signal Stalker To use Signal StalkerLocking Out Frequencies Special Signal StalkerTo use Special Signal Stalker To lock out a frequencyTo unlock all frequencies in a search bank Saving Found FrequenciesTo review and unlock frequencies To save a frequency found during a searchTo scan ScanningLocking Out Channels To locked out a channelTo review all locked out channels To turn on the priority featurePriority Scanning To make an existing channel a Priority channelTo perform a weather scan Weather AlertsTo modify the Priority channel To program a weather channel into priority channelSame Standby Mode To program a Fips codeTo test the weather alert To review stored Fips codesTo enter Same standby To use Skywarn MonitoringSkywarn To monitor a channelDefining a Trunking Bank Trunking SetupTo set a default tuning frequency To define a Trunking BankTrunking Modes Motorola Trunking SetupTo set Open or Closed mode for a bank Fleet Maps To program a fleet mapBase and Offset Frequencies For Motorola Type II, enterEdacs Trunking Setup UHF-Hi 806-960 MHz To program 800 MHz Motorola trunkingTo save a correct Home Repeater LTR Trunking SetupSearching for Talk Group IDs To define a Talk Group ID Saving a Talk Group IDTo search for Talk Group IDs To delete ALL talk group IDs in a bank 1. Press Prog Deleting Talk Group IDsTo delete a Talk Group ID Trunk Scanning Saving Trunking ChannelsTrunking Delay To set a Talk Group ID delayTo lock out Talk Group IDs Locking Out Talk Group IDsTurning Off Sub-Banks To review locked-out Talk Group IDsTo turn off a sub-bank while scanning Scanner MaintenanceTalk Group ID Hold To set Talk Group ID HoldText Tags To define a Text TagTo display the Talk Group ID Troubleshooting Issue SolutionBirdie Frequencies Error message appearsWhen trying to upload or CauseTo initialize the scanner Service and RepairInitializing the Scanner Scanning Legally Appendix a Glossary ReferencesFCC Notice Search bank SR0 Marine band Receive mode FM Freq. MHz Appendix B Search BanksSearch bank SR1 CB band Receive mode AM Freq. MHz Group Search bank SR4 Aircraft Receive mode AM, FM Appendix C Ctcss / DCS Codes Ctcss CodesDCS Codes Appendix D Signal StalkerAll Band PubSafety Band To use AFS format Appendix E Talk Group FormatMotorola Appendix F Specifications Sensitivity 20 dB S/NDB +/-4 kHz Addendum Cat. No -163Purple DOT Purple DOT BB Business Band Police Departments Police Dept Nascar Track Announcer Security Alarm Security Company Companies DOT Business Band DOT BB Limited One-year Warranty