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Radio Shack 20-164 manual 9V DC

Models: 20-164

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1240–1300 MHz		0.7 uV
AM:
25–54 MHz		1 uV
108–136.99166 MHz		1 uV
137–174 MHz		1.5 uV
216.0025–224.975MHz		1.5 uV
225-299.975 MHz		2 uV
300-405.975 MHz		3 uV
406–512 MHz		2 uV
764–960 MHz		2 uV
1240–1300 MHz		3 uV
Selectivity:
All AM and FM (except AM 25 – 27.995 MHz)
..............................................................	6 dB +/-7 kHz
AM......................................................................................................................25 – 27.995 MHz	-50 dB +/-13 kHz
	-6 dB +/-4 kHz
...........................................................	-50 dB +/-6 kHz
Spurious Rejection (at 154.1 MHz FM)		40 dB
Scanning Rate	Up to 60 Channels per Second
Search Rate	Up to 78 Steps per Second
Delay Time		2 seconds
Intermediate Frequencies (IF):
1st		380.8 MHz
2nd		21.4 MHz
3rd		455 kHz
Priority Sampling		2 seconds
Operating Temperature		14 to 140° F
IF Rejection	(-10 to 60° C)

380.8 MHz at 154.1 MHz		60 dB
21.4 MHz at 154.1 MHz		100 dB
Squelch Sensitivity:
Threshold (FM and AM)		0.5 uV
Tight (FM)		25 dB
Tight (AM)		20 dB
Antenna Impedance		50 Ohms
Audio Output Power (10% THD)		170 mW
Built-in Speaker	1 3/8 Inches (36 mm)
	(8-ohm, Dynamic Type)
Power Requirements:
Batteries		4 AA
External Power		9V DC
Current Drain (Squelched)		90 mA
Battery Charge Current		150 mA
Dimensions (HWD)	5 3 /4 x 2 9 /16 x 1 5 /8 Inches
	(145 x 65 x 42 mm)
Weight (without antenna and batteries)		8.5 oz.
		(240 g)

Specifications and depictions are subject to change

and improvement without notice. Actual product may vary from the images found in this document.

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Image 61

Radio Shack 20-164 manual 9V DC

Contents

Triple Trunking What’s IncludedContents Contents Your Scanner Volume / OFFAttaching the Belt Clip Connecting the AntennaTo 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 modeDelay Scanner SetupTo turn the delay on / off To define a channel Defining a ChannelTo copy a frequency Copying a FrequencyTo delete a saved frequency Deleting Saved FrequenciesTo delete all saved frequencies in a bank To define a channel’s Ctcss or DCS code Scanner CloningTo 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 frequenciesTo unlock all frequencies in a search bank Saving Found FrequenciesTo save a frequency found during a search Locking Out Channels ScanningTo scan To locked out a channelPriority Scanning To turn on the priority featureTo review all locked out channels To make an existing channel a Priority channel Weather AlertsTo 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 isTo enter Same standby SkywarnTo 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 BankTo set Open or Closed mode for a bank Motorola Trunking SetupTrunking 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 SetupSaving a Talk Group ID Searching for Talk Group IDsTo search for Talk Group IDs To define a Talk Group ID Deleting Talk Group IDsTo delete a Talk Group ID Saving Trunking ChannelsTo 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 Initializing the Scanner Service and RepairTo initialize the scanner Scanning Legally FCC Notice Appendix a Glossary ReferencesAppendix 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 CodesAll Band Appendix D Signal Stalker BandsDCS Codes PubSafety Band Motorola Appendix E Talk Group FormatTo use AFS format 406-512 MHz 764-960 MHz Appendix F Specifications9V DC Preprogrammed Frequencies AddendumPurple 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