Squelch and Attenuator | Radio Shack 20-164 instruction

To turn on the backlight:

1.Hold down LIGHT until the light turns on.

2.To turn off the backlight, press LIGHT.

To change the backlight mode:

1.	Turn on the scanner. “Multi-system Trunking
	Scanner” appears.
2.	While “Multi-system Trunking Scanner”
	appears, press LIGHT.
3.	Press  or  to select a backlight mode
	and duration (seconds).

		Normal	Keypress	Ignore

		3	K3	I3

		5	K5	I5

		10	K10	I10

		20	K20	I20

4.	Press ENT.

To change the display contrast:

1.Press MAN.

2.Press FUNC then 9.

3.Press  or  to select the contrast.

4.Press ENT.

Squelch and Attenuator

The squelch and attenuator help you control your scanner’s sensitivity. If you hear a hissing sound, the scanner will remain on an active channel, even after a disconnect tone or a stopped transmission.

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Radio Shack 20-164 manual Squelch and Attenuator, To turn on the backlight, To change the backlight mode

Contents

Triple Trunking What’s Included Contents Contents Your Scanner Volume / OFF To attach the supplied antenna Connecting the AntennaAttaching the Belt Clip Batteries Powering Your Scanner To charge batteries To install batteries To use an external power source External Power Headphones and Speakers To lock the keypad Keytones and KeylockBacklight and Contrast To set the keytone To change the display contrast To change the backlight modeSquelch and Attenuator To turn on the backlight To set squelch To set the attenuator mode To turn the delay on / off Scanner SetupDelay To define a channel Defining a Channel To copy a frequency Copying a Frequency To delete all saved frequencies in a bank Deleting Saved FrequenciesTo delete a saved frequency To save a Ctcss or DCS code Scanner CloningTo define a channel’s Ctcss or DCS code To activate Seek Search SearchingSeek Search To clone the scanner data To search preprogrammed search banks Search Banks To search banks SR0-SR2 Zeromatic To program the search range of Bank SR7 Signal StalkerProgramming a Search Range To activate Zeromatic To use Signal Stalker Special Signal Stalker To review and unlock frequencies To use Special Signal StalkerLocking Out Frequencies To lock out a frequency To save a frequency found during a search Saving Found FrequenciesTo unlock all frequencies in a search bank To locked out a channel ScanningLocking Out Channels To scan To review all locked out channels To turn on the priority featurePriority Scanning To modify the Priority channel Weather AlertsTo make an existing channel a Priority channel To program a Fips code Same Standby ModeTo perform a weather scan To program a weather channel into priority channel To review stored Fips codes Code. The format of a Fips code is To test the weather alert SkywarnTo enter Same standby To find a frequency to monitor MonitoringTo use Skywarn To monitor a channel To define a Trunking Bank Trunking SetupTo set a default tuning frequency Defining a Trunking Bank Trunking Modes Motorola Trunking SetupTo set Open or Closed mode for a bank To program a fleet map Fleet Maps For Motorola Type II, enter Base and Offset Frequencies UHF-Hi 806-960 MHz To program 800 MHz Motorola trunking Edacs Trunking Setup To save a correct Home Repeater LTR Trunking Setup To search for Talk Group IDs Searching for Talk Group IDsSaving a Talk Group ID To define a Talk Group ID Deleting Talk Group IDs To delete ALL talk group IDs in a bank Saving Trunking ChannelsTo delete a Talk Group ID To change the scanning direction, press  or  Trunk Scanning To lock out Talk Group IDs Trunking DelayTo set a Talk Group ID delay Locking Out Talk Group IDs To turn off a sub-bank while scanning Turning Off Sub-BanksTo review locked-out Talk Group IDs To turn off a sub-bank To set Talk Group ID Hold Scanner MaintenanceTalk Group ID Hold Text TagsPage Working at all TroubleshootingTo display the Talk Group ID Scanner is not Does not scan Scanner does notReceive any stations Or reception is poor Scanner is on but Birdie Frequencies To initialize the scanner Service and RepairInitializing the Scanner Scanning Legally FCC Notice Appendix B Search Banks ReferencesAppendix a Glossary 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 Codes DCS Codes Appendix D Signal Stalker BandsAll Band PubSafety Band To use AFS format Appendix E Talk Group FormatMotorola 406-512 MHz 764-960 MHz Appendix F Specifications 9V DC Limited One-year Warranty