Radio Shack 20-164 manual Headphones and Speakers

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If you use an external power source for regular operation, install alkaline batteries for emergencies. Rechargeable batteries will self- discharge, even when not used, and could have no usable power.

Caution: You must use a Class 2 power source that supplies 9V DC and delivers at least .

400 mA. Its center tip must be set to positive and its plug must fit the scanner’s PWR DC 9V jack. Using an adaptor that does not meet these specifications could damage the scanner or the adaptor.

Headphones and Speakers

You can plug headphones or an amplified speaker (neither included) into your scanner’s headphone jack. This automatically mutes the scanner’s speaker.

Even though some earphones/headphones let you hear some outside sounds when listening at normal volume levels, they still can present a traffic hazard.

To protect your hearing, follow these earphone or headphones guidelines:

•Do not listen at extremely high volume levels. Extended high-volume listening can lead to permanent hearing loss.

•Set the volume to the lowest setting before listening. Turn on the scanner, and adjust the volume to a comfortable level.

•After you set the volume, do not increase it. Over time, your ears adapt to the volume level, so a volume level that does not cause discomfort might still damage your hearing.

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Contents Triple Trunking What’s IncludedContents Contents Your Scanner Volume / OFFConnecting the Antenna Attaching the Belt ClipTo attach the supplied antenna Batteries Powering Your ScannerTo charge batteries To install batteriesTo use an external power source External PowerHeadphones and Speakers Backlight and Contrast Keytones and KeylockTo set the keytone To lock the keypadSquelch and Attenuator To change the backlight modeTo turn on the backlight To change the display contrastTo set squelch To set the attenuator modeScanner Setup DelayTo turn the delay on / off To define a channel Defining a ChannelTo copy a frequency Copying a FrequencyDeleting Saved Frequencies To delete a saved frequencyTo delete all saved frequencies in a bank Scanner Cloning To define a channel’s Ctcss or DCS codeTo save a Ctcss or DCS code Seek Search SearchingTo clone the scanner data To activate Seek SearchTo search preprogrammed search banks Search BanksTo search banks SR0-SR2 ZeromaticProgramming a Search Range Signal StalkerTo activate Zeromatic To program the search range of Bank SR7To use Signal Stalker Special Signal StalkerLocking Out Frequencies To use Special Signal StalkerTo lock out a frequency To review and unlock frequenciesSaving Found Frequencies To unlock all frequencies in a search bankTo save a frequency found during a search Locking Out Channels ScanningTo scan To locked out a channelTo turn on the priority feature Priority ScanningTo review all locked out channels Weather Alerts To make an existing channel a Priority channelTo modify the Priority channel To perform a weather scan Same Standby ModeTo program a weather channel into priority channel To program a Fips codeTo review stored Fips codes Code. The format of a Fips code isSkywarn To enter Same standbyTo test the weather alert To use Skywarn MonitoringTo monitor a channel To find a frequency to monitorTo set a default tuning frequency Trunking SetupDefining a Trunking Bank To define a Trunking BankMotorola Trunking Setup To set Open or Closed mode for a bankTrunking Modes To program a fleet map Fleet MapsFor Motorola Type II, enter Base and Offset FrequenciesUHF-Hi 806-960 MHz To program 800 MHz Motorola trunking Edacs Trunking SetupTo save a correct Home Repeater LTR Trunking SetupSearching for Talk Group IDs Saving a Talk Group IDTo search for Talk Group IDs To define a Talk Group ID Deleting Talk Group IDsSaving Trunking Channels To delete a Talk Group IDTo delete ALL talk group IDs in a bank To change the scanning direction, press  or  Trunk ScanningTo set a Talk Group ID delay Trunking DelayLocking Out Talk Group IDs To lock out Talk Group IDsTo review locked-out Talk Group IDs Turning Off Sub-BanksTo turn off a sub-bank To turn off a sub-bank while scanningTalk Group ID Hold Scanner MaintenanceText Tags To set Talk Group ID HoldPage To display the Talk Group ID TroubleshootingScanner is not Working at allReceive any stations Or reception is poor Scanner does notScanner is on but Does not scanBirdie Frequencies Service and Repair Initializing the ScannerTo initialize the scanner Scanning Legally FCC Notice References Appendix a GlossaryAppendix B Search Banks Search bank SR1 CB band Receive mode AM Search bank SR2 FRS/GMRS/MURS band Search bank SR4 Aircraft Receive mode AM, FM Ctcss Codes Appendix C Ctcss / DCS CodesAppendix D Signal Stalker Bands All BandDCS Codes PubSafety Band Appendix E Talk Group Format MotorolaTo use AFS format 406-512 MHz 764-960 MHz Appendix F Specifications9V DC Limited One-year Warranty

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