9V DC | Radio Shack 20-164 instruction

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 Included Contents Contents Your Scanner Volume / OFF Attaching the Belt Clip Connecting the AntennaTo attach the supplied antenna Batteries Powering Your Scanner To charge batteries To install batteries To use an external power source External Power Headphones and Speakers Backlight and Contrast Keytones and KeylockTo set the keytone To lock the keypad Squelch and Attenuator To change the backlight modeTo turn on the backlight To change the display contrast To set squelch To set the attenuator mode Delay Scanner SetupTo turn the delay on / off To define a channel Defining a Channel To copy a frequency Copying a Frequency To 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 Search To search preprogrammed search banks Search Banks To search banks SR0-SR2 Zeromatic Programming a Search Range Signal StalkerTo activate Zeromatic To program the search range of Bank SR7 To use Signal Stalker Special Signal Stalker Locking Out Frequencies To use Special Signal StalkerTo lock out a frequency To review and unlock frequencies To 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 channel Priority 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 code To review stored Fips codes Code. The format of a Fips code is To enter Same standby SkywarnTo test the weather alert To use Skywarn MonitoringTo monitor a channel To find a frequency to monitor To set a default tuning frequency Trunking SetupDefining a Trunking Bank To define a Trunking Bank To set Open or Closed mode for a bank Motorola Trunking SetupTrunking Modes 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 Saving a Talk Group ID Searching for Talk Group IDsTo search for Talk Group IDs To define a Talk Group ID Deleting Talk Group IDs To delete a Talk Group ID Saving Trunking ChannelsTo delete ALL talk group IDs in a bank To change the scanning direction, press  or  Trunk Scanning To set a Talk Group ID delay Trunking DelayLocking Out Talk Group IDs To lock out Talk Group IDs To review locked-out Talk Group IDs Turning Off Sub-BanksTo turn off a sub-bank To turn off a sub-bank while scanning Talk Group ID Hold Scanner MaintenanceText Tags To set Talk Group ID HoldPage To display the Talk Group ID TroubleshootingScanner is not Working at all Receive any stations Or reception is poor Scanner does notScanner is on but Does not scan Birdie 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 Codes All 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 Specifications 9V DC Limited One-year Warranty