Uniden America UB331 MOBLE TYPE SCANNER User Manual Precautions

Download:
Mirror Download [FCC.gov]
Document ID	486410
Application ID	0FQa0YwlqVKqhMStPJ+gXQ==
Document Description	USERS MANUAL
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	52.58kB (657310 bits)
Date Submitted	2004-11-08 00:00:00
Date Available	2004-11-08 00:00:00
Creation Date	2004-11-01 15:32:24
Producing Software	Acrobat Distiller 5.0 (Windows)
Document Lastmod	2004-11-05 10:55:46
Document Title	Precautions
Document Creator	Word 用 Acrobat PDFMaker 5.0
Document Author:	eng

DRAFT
20-426
Owner’s Manual
Please read before using this equipment.
© 2004 RadioShack Corporation. All Rights Reserved.
RadioShack, Adaptaplug, Hypersearch, and Hyperscan are trademarks
used by RadioShack Corporation.
Motorola, Smartnet, and Privacy Plus are registered
trademarks of Motorola Inc.
is a registered trademark of GE/Ericsson Inc.
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Front and Rear Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Icon Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
What are Highway Patrol Alerts? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
What is Scanning? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
What is Searching? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
What is Trunk Tracking? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Feature Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Where to Obtain More Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Information on the Internet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Included with Your Scanner Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Installing the 20-426 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
For Home Use (Desktop Installation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
For Mobile Use (In-Car Installation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Typical Mounting Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Mounting the Scanner in Your Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Applying Power for Vehicle Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
DC power Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Applying Power Using Standard AC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Connecting an External Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Listening Safely . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Connecting the Clone Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Scanning Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Turn the Scanner On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
How Squelch Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Setting the Squelch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Highway Patrol Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Selecting the State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Scanning Highway Patrol Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Highway Patrol Scan Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Highway Warning Alert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Alert Tone Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Muting the Alert Tone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Alert Light Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Skip Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Priority Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Trunked Highway Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Private Bank Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Programming Frequencies into Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Deleting a Stored Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Duplicate Frequency Alert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Memory Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Scanning Private Bank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Hold/Resume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Channel Lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Restoring a Locked-out Channel in Hold Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Restoring All Locked-out Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Priority Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Changing the Priority Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Service Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Band Search . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Setting a Search Band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Search Hold Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Data Skip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Frequency Skip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Storing Search Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
iii
20-426 8/22/03 1:40 PM Page iii
Trunk Tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Setting the Squelch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Programming Trunking Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
STEP 1: Selecting Trunking System Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
STEP 2: Programming Trunking Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Programming Talk Group ID/Scan Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Scan Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Receiving Trunked Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
ID Scan Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
ID Scan Hold Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
ID Search Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
ID Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
ID Search Hold and Direct Entry ID in Hold Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Programming Scan Lists During Search . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Deleting a Stored ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
ID Lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Review ID Lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Restoring Locked-out IDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Setting the Delay Mode for Trunking Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Trunking Frequency Confirmation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Setting Priority in Trunking Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Moving between Scan List Memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Multi-Track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
EDACS® Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
EDACS® Tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Programming EDACS System Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
An EDACS® Trunked system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Special EDACS® Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
EDACS ID Range Search . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
EDACS SCAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
LTR® Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
LTR® Tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Motorola Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Motorola Tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Fleet Map Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Selecting Preset Fleet Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Programming a User Fleet Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Programming a Hybrid System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Setting the Base, Spacing Frequencies and Offset Channel for Motorola VHF/UHF
Trunked Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Toggling the Status Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Control Channel Only Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Disconnect Tone Detect Option (End Code) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Remote Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
PC Control Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Clone Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Care and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
One Year Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
iv
20-426
8/22/03 1:40 PM
Page iv
Terminology
What are Highway Patrol Alerts?
Most highway patrol vehicles on the road today are equipped with a secondary
radio system
known as a “mobile extender” or “vehicular repeater.” Whenever the dispatcher
transmits to
any vehicle in the district, “mobile extender” in every car within the district is
activated.
Using a constant PRIORITY check of specific frequencies in each state, the 20-426
recognizes and alerts you to transmissions from “mobile extender” radios as well as
from
car-to-car, aircraft-to-car and other special-purpose frequencies. You receive an
audible
(beep tone) and visual (flashing Alert light) alert whenever you are within an
approximate
three-mile radius of Highway Patrol/ State Police units using a mobile extender unit.
What is Scanning?
Unlike standard AM or FM radio stations, most two-way communications do not
transmit
continuously. The 20-426 scans the Frequencies you have programmed into the
Scanner’s
channels until it finds an active frequency.
Scanning stops on an active frequency and remains on that channel as long as the
transmission continues. When the transmission ends, the scanning cycle resumes
until
another transmission is received.
What is Searching?
The 20-426 can search each of its 13 bands to find active frequencies. This is
different from
scanning because you are searching for frequencies that have not been
programmed into
your Scanner’s channels. The scanner automatically chooses between two speeds
while
searching. During search mode the scanner will search 100 frequencies per second
for band
with 12.5 kHz steps and during Turbo SEARCH mode the scanner can achieve up
to 300
frequencies per second for bands with 5 kHz steps.
What is Trunk Tracking?
Conventional scanning is a simple concept. You enter a radio frequency in your
scanner’s
memory which is used by someone you want to monitor. For example, the police in
your
area may broadcast on 460.500 MHz, the fire department on 154.445 MHz, the
highway
department on 37.900 MHz, etc. So when your scanner stops on a frequency, you
usually
know who it is, and more importantly, you can stop on a channel and listen to an
entire
conversation. This type of scanning is easy and fun.
As the demand for public communications has increased, many public radio users
don't
have enough frequencies to meet their needs, and this has created a serious
problem.
Trunking radio systems have been implemented to solve this problem.
20-426 8/22/03 1:40 PM Page 4
In a trunked radio system the frequencies are shared among the police and fire
departments
and a computer systematically assigns available frequencies when they are needed
for
communications.
Sharing of the available public service frequencies, or trunking, allows cities,
counties, or
other agencies to accommodate hundreds of users with relatively few frequencies.
Following
a conversation on a trunked system using a scanner is difficult, if not impossible.
Because
when there's a short break during the conversation you're monitoring, it’s possible
that the
talkgroup will be assigned to a completely different frequency in the trunked system.
This
type of scanning is difficult and frustrating.
TrunkTracker Technology changes this! Not only does your new 20-426 scan
channels like
a conventional scanner, it actually follows the users of a trunked radio system. Once
you
know a talkgroups ID, you won’t miss any of the action.
If you're a new scanner enthusiast, you may want to read the first part of this
manual and
use your scanner in conventional mode before you begin trunk tracking.
Understanding
scanning fundamentals and its terminology will make trunk tracking much easier.
20-426 8/22/03 1:40 PM Page 5
Feature Highlights
• Pre-programmed frequencies specific to each state (except Hawaii).
• Pre-programmed Trunked and conventional Highway Patrol frequencies
• Highway Patrol Priority Alert
-Receive audible and visual alert when within three miles of many Highway
Patrol/State
units
• Pre-programmed frequencies for the following categories:
-Local Police and County Sheriffs
-Fire and Emergency Medical Service
-News Media
-Weather (continuous NOAA weather and Canadian Coast Guard broadcasts)
-CB Radio
-Aircraft
-Railroads
-Marine Band
-Department of Transportation
• Pager Screen - lets you set the scanner so it does not detect pager frequencies
during Close Call search.
• Trunk Tracking – Follow VHF High Band UHF 800MHz trunked public safety and
public
service systems just as if conventional two-way communications were used.
• Multi-Track – Track more than one trunking system at a time. Scan conventional
and
trunked systems at the same time.
• 1000 Channels – Program one frequency into each channel. You must have at
least one
channel programmed to use the Scan mode.
• 13 Bands – Includes 13 bands, with aircraft and 800 MHz.
• 10 Banks – 10 banks with 50 channels each are useful for storing similar
frequencies to
maintain faster scanning cycles or for storing all the frequencies of a trunked
system.
• 25 MHz-956 MHz – Indicates the range of frequencies that can be searched within
the
bands of your scanner.
Note: The frequency coverage is not continuous and excludes the cellelar
telephone
Band.
• 5 Priority Channels – You can assign one priority channel in each bank.
Assigning a
priority channel allows you to track activity on your most important channel(s) while
monitoring other channels for transmissions. You can also assign trunking priority
talkgroups.
• Data Skip – Allows your scanner to skip unwanted data transmissions and
reduces
birdies.
• Direct Channel Access – Go directly to any channel without entering
programming mode.
• Turbo Search – Increases the search speed to 300 steps per second. This
applies only to
transmission bands with 5 kHz steps.
• PC Programmable – Allows you to easily program all frequencies and Trunking
Talk
Groups into your 20-426 through Radio Shack 20-426 Scanning software running
on your PC.
– For more information on 20-426 SS Programming software visit our website at
scanner.Radio Shack.com.
20-426 8/22/03 1:40 PM Page 6
Where to Obtain More Information
Before you can scan the PRIVATE bank, you must program frequencies into the
scanner’s
channels. The Frequency Guide lists typical frequencies used around the U.S.A.
and
Canada that you may program into your new scanner. However, this is not a
complete list of
frequencies for your area.
To obtain frequency information for your area, contact one of the following:
• Scanner Master
1 (800) Scanner (722-6637) (Hours are from 10:00 a.m. to 5:00 p.m. Eastern Time
Monday through Friday.) frequencies@scannermaster.com.
To obtain another copy of the frequency guide, contact one of the following:
• Radio Shack Parts Department
(800) 554-3988 (Hours are from 8:00 a.m. to 5:00 p.m. Central Time Monday
through
Friday.)
• Local Dealer
Information on the Internet
If you have access to the internet, you may want to visit one of the following
websites for
additional information:
scanner.Radio Shack.com
www.bearcat1.com
10:36 AM Page 7
Included with Your Scanner Package
• 20-426 Scanner
• AC Adapter (AD 140U)
• DC Power Cord
• Cigarette Lighter Adapter Plug (Model CD007)
• Telescopic Antenna (Model AT129)
• Window Mount Antenna (Model AT002)
• Operating Guide
• Trunk Tracker Frequency Guide
• Other Printed Materials
• Remote Programming Software Demo CD-ROM
• Mobile Mounting Bracket (Model MB-008)
If any of these items are missing or damaged, immediately contact your place of
purchase or
Radio Shack Customer Service at: (800) 297-1023, 8:00 a.m. to 5:00 p.m., Central
Time, Monday
through Friday.
Optional Accessories
The following optional accessories for your 20-426 are available from your local
Radio Shack
Dealer or through the Radio Shack Parts Department by calling: (800) 554-3988,
8:00 AM to 5:00
PM CST, Monday through Friday. We can also be reached on the web at
www.Radio Shack.com.
DC Power Cord (Model PS-001) - For hard wiring power from your car to your
scanner.
Motorola Antenna Adapter (Model PLG-134) - Use only if your antenna has a
Motorolatype
plug.
Page 8
Installing the 20-426
For Home Use (Desktop Installation)
1. Insert the DC plug end of the AC Adapter into the DC 12V jack on the rear panel.
2. Plug the AC Adapter into a standard 120V AC wall outlet.
3. Plug the Telescoping Antenna into the ANT connector.
Extend the antenna to its full height. For frequencies higher than 406 MHz,
shortening
the antenna may improve the reception.
4. Use the desktop stand for a better viewing and operating angle.
Helpful Hints
• If strong interference or electrical noise is received, relocate the scanner or its
antenna
away from the source.
• If you are operating the scanner in a fringe area or need to improve reception, use
an
optional antenna designed for multi-band coverage. (You can purchase this type of
antenna at a local electronics store.)
• If the optional antenna has no cable, use 50-70 ohm coaxial cable for lead-in. A
mating
plug may be necessary for the optional antennas.
For Mobile Use (In-Car Installation)
Installation for Temporary Use:
A Cigarette Lighter Power Cord is provided for easy, temporary installation.
Warning: Do not use the cigarette lighter power cord in a positive ground vehicle.
Plug one end of the Cigarette Lighter Power Cord into the cigarette lighter jack and
the other
end into the DC 12V jack on the back of the scanner.
Connecting the Antenna Plug
Connect the mobile antenna plug into the ANT connector on the rear panel. (For
more
information on antenna installation, please refer to the instruction guide that came
with your
antenna.)
The 20-426 can be mounted using the supplied mounting bracket.
This bracket is available from the Radio Shack parts department (see page 8)
1. Select an ideal location in your vehicle to mount the 20-426. Avoid a location that
could
interfere with your driving. In a passenger car, the ideal location is underneath the
dashboard on the passenger side.
2. Use the supplied mounting bracket as a template for marking the location of the
mounting screws. Note: If there are screws already holding the dashboard, you can
use
the same screw holes to mount the bracket.
Page 9
10
3. Drill the necessary holes and secure the mounting bracket in place using the
screws
provided.
4. Mount the radio to the bracket only after the wiring has been connected to the
rear
panel.
Connecting the Power Cord
Note: If you are not experienced in connecting accessories to the vehicle fuse box,
please
see your automotive dealer for advice on proper installation.
Installation for everyday use:
1. Check the vehicle battery connections to determine which battery terminal
(positive or
negative) is grounded to the engine block or chassis. Most of today’s vehicles use a
negative ground. If your vehicle has a negative ground, follow Steps 2 and 3.
Otherwise,
skip to the note following Step 3.
2. Connect the RED wire of the DC power cord to the accessory contact in your
vehicle’s
+12V DC fuse box.
3. Connect the BLACK wire of the DC power cord to the negative side of the vehicle
(usually the chassis).
Note: In vehicles with a positive ground, the RED wire connects to the chassis and
the
BLACK wire connects to the accessory contact in the fuse box.
4. Insert the DC plug into the DC 12V jack on the back of the scanner.
20-426 8/22/03 1:40 PM Page 10
11
Typical Mounting Methods
The 20-426 can be conveniently mounted on a table, bulkhead, overhead, or any
other
desired location with the supplied mounting bracket (MB008) (refer to figure below
for typical
mounting methods).
Caution: Make sure there are no hidden electrical wires or other items behind the
desired
location before proceeding. Check that free access for mounting and cabling
is available.
Mounting the Scanner in Your Vehicle
Before you mount the scanner, make sure you have all the necessary materials.
Then
confirm that the scanner fits your vehicle’s mounting area. This unit requires a
mounting
area of 2.44 inch high by 7.06 inch wide by 6.10 inch deep (50.8 x 176.5 x 152.5
mm).
Caution: Be sure to avoid obstructions behind the mounting surface.
Follow these steps to mount the scanner in your vehicle.
1. Choose a mounting location, then use the supplied
mounting bracket as a template to mark the positions for
the mounting screw holes.
2. In the marked positions, drill holes slightly smaller than
the supplied screws.
3. Attach the mounting bracket to the mounting location
using the supplied screws and lock washers.
4. Attach the scanner to the mounting bracket using the
supplied mounting knobs.
5. Connect the antenna’s cable to the ANT. connector
on the rear of the scanner.
Note: If the antenna cable’s connector does not fit in the ANT.
connector, you might also need a Motorola-to BNC
antenna plug adapter (available at a local
electronics store).
• Table top mount • Bulkhead mount • Overhead mount
SQL
VOL
ANT.
EXT.
SP.
DC 12V
REMOTE
Page 11
Applying Power for Vehicle Installation
You can power your scanner using the supplied DC cigarette lighter power cord or
an DC
power cord.
DC power Installation
To power the scanner from a vehicle’s 12V power source (such as a
cigarette-lighter
socket), you need a cigarette-lighter adapter.
To connect an DC cigarette-lighter power cable, insert its barrel plug into the
DC 12V jack on the rear of the scanner, then plug the power cable into your
vehicle’s
cigarette lighter socket.
Note : If you use a cigarette-lighter power cable and your vehicle’s engine is
running, you
might hear electrical noise from the engine while scanning. This is normal.
Caution: DC 12 V Jack can use a power source that supplies 12V DC at least 500
mA.
You must use a power source that supplies 12V DC and delivers at least
500 mA. Your standard 12V car battery should be sufficient. The cord connector’s
center tip must be set to positive and its plug must fit the scanner’s DC 12V jack.
The supplied DC power cord meets these specifications. Using a power cord that
does not meet these specifications could damage the scanner or the adapter.
• Always connect the adapter or DC power cord to the scanner before you connect it
to the
power source. When you finish, disconnect the adapter or DC power cord from the
power
source before you disconnect it from the scanner.
• For added safety and to protect your scanner,
disconnect the cable from your vehicle battery’s
negative (-) terminal before you begin.
Follow these steps to connect the DC power cord.
1. Connect the power cord’s black wire to a chassis ground, such as a metal screw
attached to a metal part of the vehicle’s frame. Be sure that the screw is not
insulated
from the frame by a plastic part.
2. Connect the power cord’s red wire (with in-line fuse) to a source
of voltage that turns on and off with the ignition switch, such as
a spare accessory terminal in your vehicle’s fuse box.
3. Insert the power cord’s barrel plug into the DC 12V jack on
the rear of the scanner.
4. Reconnect the cable to the vehicle battery’s negative (-)
terminal.
12
ANT.
EXT.
SP.
DC 12VREMOTE
12
13
Applying Power Using Standard AC Power
To power the scanner from an AC outlet, use the provided AC adapter with a 5.5
mm outer
diameter/2.1mm inner diameter tip.
Caution: You must use a Class 2 power source that supplies 12V DC and delivers
at least
500 mA. The cord connector’s center tip must be set to positive and its plug must
fit the scanner’s DC 12V jack. Using an adapter that does not meet these
specifications
could damage the scanner or the adapter.
• Always connect the AC adapter to the scanner before you connect it to AC power.
When
you finish, disconnect the adapter from the AC power before you disconnect it from
the scanner.
1. Insert the adapter’s barrel plug into the DC
12V jack on the rear of the scanner.
2. Plug the adapter into a standard AC outlet.
Note: Use only the AC adapter supplied with
your scanner.
Connecting an External Speaker
In a noisy area, an external speaker (available at a local electronics store)
positioned in the
right place might provide more comfortable listening.
Plug the speaker cable’s 1/8 inch (3.5 mm)
plug into your scanner’s EXT. SP. jack.
Note: Connecting an external speaker
disconnects the scanner’s
internal speaker.
Listening Safely
• Do not use the earphone. The volume is not adjustable for the Warning Alert
and
damage to your hearing could occur.
Connecting the Clone Cable
You can transfer the programmed data to and from another 20-426 scanner using a
RS232C
Straight Cable (9 pin to 9 pin) (not supplied). Connect the cable between each
scanner’s
REMOTE jacks. See "Clone Mode" on page 49. You can also upload or download
the
programmed data to or from a PC using optional programming software available
through
your local electronics store.
ANT.
EXT.
SP.
DC 12VREMOTE
12V
ANT.
EXT.
SP.
DC 12V
REMOTE
20-426 PM Page 13
Scanning Overview
You can scan in one of four ways:
1. Highway Patrol Scanning When you select a state you want to scan in Highway
Patrol
mode, you can scan pre-programmed Highway Patrol frequencies.
2. Service Scanning Press SVC to select one of the nine services to find an active
frequency.
3. Band Search Select a frequency band to search. The Search function is different
from
scanning. It searches for any active frequency step by step within the lower and
upper
limits of the band. When an active frequency is found, the scanner will stop and stay
on
that frequency as long as that transmission lasts. If that frequency is interesting to
you,
press HOLD/RESUME to hold the frequency on the display. Then program it into
the
private bank you want to store. If you do not want to program that frequency, press
HOLD/RESUME or just wait until the transmission ends. The search resumes
automatically 2 seconds after the last transmission and looks for more active
frequencies.
4. Private Scanning If you have programmed frequencies into this bank, press
PVT to
scan only those that you have programmed in this bank.
Note: Before you can scan the Private Bank, you must program frequencies into the
channels. To program frequencies, see “Programming Frequencies into Channels”
on
page 21.
When scanning stops on an active frequency, it remains on that channel as long as
the
transmission continues. When the transmission ends, the scanner will remain on
the same
channel for 2 more seconds, waiting for a responding transmission. If there is no
responding
transmission within 2 seconds, the scanning cycle resumes.
Turn the Scanner On
1. Turn the VOL knob clockwise.
The scanner is turned on: the Alert Light flashes and the Alert
Tone beeps loudly.
Note: The Alert Tone depends on the currently setting selected
(see page 17).
2. The last setting mode selected before starts.
14
VOL
push
ALERT
MUTE ALERT
Turn
SQL
VOL
push
ALERT
FLASH
MUTE ALERT
Alert
Light
Page 14
15
How Squelch Works
Think of “SQUELCH” as a gate. If the gate is too low (squelch
too low), everything (all noise as well as signals) gets through.
If the gate is set too high (squelch too high), nothing gets
through.
If the gate is set just right (squelch set properly), just the desired
signals get through.
Setting the Squelch
1. To set the squelch, press HOLD/RESUME to stop scanning.
If needed, adjust VOL until you do not hear a signal (see
page 17).
2. Turn SQL fully clockwise until hiss heard.
This lowers the “squelch gate,” allowing all signals and noise
to get through.
3. Turn SQL fully counterclockwise just until hiss stops.
This raises the “squelch gate,” allowing only strong signals to
get through.
In the city, you may want to adjust the Squelch even further
counterclockwise to decrease the range of the Highway Warning
Alert signal.
This prevents the alert from sounding unnecessarily due to
farther, less important sources.
Strong Signals
Medium Signals
Weak Signals
Noise
Strong Signals
Medium Signals
Weak Signals
Noise
Strong Signals
Medium Signals
Weak Signals
Noise
SQL push
FLASH
MUTE ALERT
Turn
SQL push
FLASH
MUTE ALERT
Turn
Page 15
Highway Patrol Scanning
Highway Patrol frequencies are pre-programmed on a state-by-state basis. When
Highway
Patrol scanning, the Highway Warning Alert is activated.
Selecting the State
1. Press STATE to select the state you are operating in.
Press and hold STATE to scroll rapidly.
Hint: For the State Code Order, please see page 56.
2. To step forward through the states (A - W), press STATE
and, within three seconds, press the ▲ key repeatedly. To
step backward through the states (W - A), press STATE and,
within three seconds, press the ▼ key repeatedly.
3. To scroll rapidly, press and hold the ▲ or ▼ key.
Scanning Highway Patrol Frequency
You can scan Highway Patrol frequencies by pressing PVT or HWY/POL.
1. Press HWY/POL to scan through only pre-programmed Highway
Patrol frequencies.
or
Press PVT repeatedly in Highway scanning mode until “HWY/POL”
appears on the display to scan through pre-programmed
Highway Patrol frequencies.
Hint: If you press PVT repeatedly in Highway scanning mode
until “HWY/POL” and “PVT” appears on the display, you can
mix-scan between Highway Patrol frequencies and User
Programmed channels.
2. When the scanner receives communications, scanning stops,
the state code and the frequency appear.
When the transmission ends, the scanner holds for two
seconds on that frequency for a response. For more
information on the Delay feature, please see page 28.
If there is no response, scanning resumes.
16
Page 16
17
Highway Patrol Scan Hold
1. When scanning stops on a desired frequency, press
HOLD/RESUME to hold on that frequency as long as you
like. When in the HOLD mode, press the ▲ or ▼ key to step
up or down the frequency. To step up or down rapidly, press
and hold the ▲ or ▼ key.
If you change into a frequency which is a control channel, the
scanner may display the Active ID (When TRUNK mode is
active).
2. To resume scanning, press HOLD/RESUME.
Note: Highway Warning Alert does not work while in the HOLD
mode.
Highway Warning Alert
The scanner alerts you when Highway Patrol/State Police units using mobile
extenders are
within an approximate three mile radius.
1. The ALERT Light flashes and the Alert Tone beeps twice
when a signal is received.
2. The ALERT Light glows steadily for approximately three
minutes. Then, if no other mobile extender transmissions are
received, the light goes out.
3. If more transmissions are received before three minutes have
passed, the ALERT Light flashes and the Alert Tone beeps once.
Alert Tone Volume
Push VOL to select Loud, Medium, or Soft.
The Alert Tone beeps and the ALERT Light flashes to your
choice.
Muting the Alert Tone
Temporary Mute
Press MUTE during the Highway Warning Alert. The Alert Tone
stops and the MUTE LED flashes until the alarm cycle (three
minutes) is finished.
Continuous Mute
Press and hold MUTE for two seconds to turn Continuous Mute on whenever you
wish. You
hear two beeps and the MUTE LED lights continuously. No Alert Tones will beep.
Canceling Mute
To cancel Mute,
SQ
VOL
push
ALERT
FLASH
MUTE ALERT
Alert
Light
Flashes
VOL
push
ALERT
MUTE ALERT
Push In
VOL
push
ALERT
FLASH
MUTE ALERT
MUTE LED
Flashes
Page 17
• Press MUTE to cancel One Moment Mute.
• Press and hold MUTE for two seconds to cancel Continuous Mute. You hear two
beeps
and the MUTE LED goes out.
• Change states. The MUTE LED goes out after scanning starts.
• Turn the scanner off and on.
Note: If MUTE is pressed for less than 2 seconds during the Continuous Mute
mode,
nothing will be changed.
Alert Light Adjustment
The ALERT Light has three settings: Bright, Dim, and Off.
Push FLASH to select Bright, Dim or Off. The ALERT Light
flashes and the Alert Tone beeps.
If you select Off, “ ” on the display reminds you the ALERT
Light is off.
WARNING: You can turn off the ALERT Light and completely
mute the Alert Tone at the same time.
This deactivates the Highway Warning Alert.
Skip Frequencies
To skip a frequency, press L/O.
You can program up to 50 skip frequencies for priority channels. And also you can
program
up to 100 skip frequencies for other frequencies (See page 27). If you skip a
preprogrammed frequency in one state and that frequency is programmed into
another state,
the frequency is skipped of both states. If you change the state code, skipped
frequencies
are cancelled as soon as scanning starts.
Priority Channels
Each state preprogrammed in the scanner contains a number of Priority channels.
The
scanner automatically checks a state’s Priority channels every two seconds for
activity. If
there is activity on one of the Priority channels, the ALERT Light will flash and the
alarm
tone will beep (see “Highway Warning Alert,” page 17).
18
SQL push
FLASH
MUTE ALERT
Push In
Page 18
19
You will experience a slight in the conversations you hear as the scanner checks
the
Priority channels. You can cancel the priority check and the interruptions in the
conversations by pressing HOLD/RESUME to hold on the frequency.
Note: The Highway Warning Alert is inoperative while the scanner is on Hold.
Remember to press HOLD/RESUME to return to normal priority-scan operation.
Priority channel cannot be changed, but you can lock-out priority channels using
L/O.
Priority channels have been pre-determined by the manufacturer as those Highway
Patrol
frequencies most commonly used for mobile extenders and for car-to-car and
aircraft-to-car
operations. Mobile extenders re-transmit every radio broadcast received on the
patrol car
radio to the officer’s walkie-talkie at low-power. Every time any officer or dispatcher
talks
(transmits), the signal is broadcast like a beacon at low-power whether or not the
officer is
out of the car.
You can select Priority Scanning mode by pressing PRI.
• Normal Priority Scan mode.
The scanner checks the Priority frequency every two seconds. “PRI” will be
displayed.
• Priority only mode.
To only monitor the priority frequencies, press and hold PRI to select Priority Only.
This
mode is especially recommended for the following states:
(Arizona) (Michigan)
(Delaware) (Oklahoma)
(Florida) (Wisconsin)
“PRI” flashes when you select Priority Only Mode.
• Priority off mode
The scanner does not check the Priority frequency. “PRI” will not displayed.
20-426 8/22/03 1:40 PM Page 19
Trunked Highway Frequency
Trunked Highway frequencies are pre-programmed for each
state. When the scanner finds the control channel data, the
scanner begins to find any active IDs. If the scanner finds any ID,
the active ID appears on the display and you will hear it.
If you press the ▲ key while monitoring an ID, the scanner will check to see if any
other IDs
are active. If none are active, scanning resumes.
When the scanner finds a control channel, it will stay on that control channel until
reception
of the control channel is lost. To force the scanner off of the trucking control channel,
press
DATA.
If you press the ▼ key while a talk group ID is active, the
frequency on which talk group is transmitting flashes on the
display.
Or press and hold the ▼ key for two seconds, and the ID and the frequency
alternately
appears on the display. To return to the normal display, press the ▼ key again.
Like conventional scanning, you can lockout reception of unwanted traffic.
You can lockout up to 30 IDs. Press L/O on the ID you want to lockout.
If you lockout 31st ID, the 1st ID already locked out is restored.
If you want to restore all the locked out IDs, pres and hold L/O for two seconds.
Or, when the state code is changed, all lockout IDs are restored as soon as
scanning starts.
If you find an interesting ID you want to continue listening to,
press HOLD/RESUME.
Press HOLD/RESUME to resume scanning.
You can set the scanner to hold on an ID for two seconds to wait for a replay before
scanning resumes. While trunking, press DELAY. “DLY” appears on the display.
20
Page 20
21
Private Bank Scanning
Programming Frequencies into Channels
Before the scanner begins Private Bank scanning, you must program a frequency
into at
least one channel. Program frequencies you purchased from your dealer, from
various free
and FCC-based sources on the internet, or from the Frequency guide included in
20-426
package. You will need to program each frequency into the
scanner’s channels in order to hear these frequencies.
1. While Private Bank scanning is activated, press
HOLD/RESUME and enter the channel number where you
want to store a frequency by using the keypad, then press
HOLD/RESUME.
✎ Change the channel by using the ▲ or ▼ key.
2. Enter the frequency you want to store by using the keypad
and (decimal key).
3. Press E to store the frequency into the channel.
4. If you want to program another frequencies into the channel,
select another channel by using the ▲ or ▼ key.
Note: • To clear a mistake while entering the frequency, press (decimal key)
repeatedly until the display is cleared.
• If you enter a invalid frequency, an error tone will sound and appears on the
display. To clear the Error message immediately, press (decimal key).
• Even if you don't enter full numbers as a frequency number, the scanner will
automatically
select the nearest valid frequency.
Deleting a Stored Frequency
To delete a stored frequency:
a. Select a channel.
b. Press 0.
c. Then press E.
Note: Channels with no frequencies are automatically locked out.
20-426 8/22/03 1:40 PM Page 21
22
Duplicate Frequency Alert
If you enter a frequency which has been stored in another channel, you will hear an
error
tone and the other channel displays.
Press (decimal key) to clear and start again.
––– OR –––
Press E again to store the frequency in both channels.
Note: The smallest channel appears on the display when you store same frequency
in two
or more channels.
Memory Lock
To avoid the accidental programming frequencies and talk group IDs, you can lock
the
memory with Memory Lock.
Press and hold M-LOCK for 2 seconds to activate this feature ,and “M-LOCK”
appears on
the display. If you press E to program memory, you will hear two beeps. To
deactivate
Memory Lock, press and hold M-LOCK for 2 seconds again.
Scanning Private Bank
1. After programming frequencies, simply press HOLD/RESUME
to begin scanning. Or pressing PVT repeatedly until “PVT”
appears on the display, you can start Private Bank Scanning.
The scanner scans only upward all the channels.
2. The bank indicators selected for scanning appear on the display, and the bank
being
currently monitored flashes. You can deselect banks from active scanning by
entering
their numbers on your keypad. The indicator for each deselected bank disappears,
and
the bank’s channels are not scanned.
Note: One bank must always be active. You cannot deactivate all five banks at the
same
time. If you try to deselect all the banks, the first bank is automatically selected.
To restore a bank to active scanning, enter the bank’s number on your keypad.
The bank’s indicator will display again.
3. During normal scanning the scanner skips unprogrammed or
locked out channels.
4. When a transmission is received, the scanner stops on that
channel. When the transmission ends, scanning resumes
automatically.
Note: You can set the scanner to hold for two seconds on the
frequency for a response. For more information on Delay
feature, please see page 28.
1 3 4 5 2 BANK
Frequency not entered
or Locked Out (L/O)
SCAN
Page 22
23
Hold/Resume
If you want to stop on a channel during scanning, press
HOLD/RESUME.
If you want to resume scanning, press HOLD/RESUME.
Direct channel access:
There are several ways to access a specific channel quickly.
1. Press HOLD/RESUME.
2. Using the keypad, enter the channel number.
3. Press HOLD/RESUME again.
Note: You can also use the PVT, ▲ or ▼ key instead of
pressing HOLD/RESUME.
Channel Lockout
You can lockout any channel so it is not checked during normal scanning. You can
also
restore the channel to scanning when you wish.
Lockout in Hold Mode
１. Press HOLD/RESUME and enter the channel number by using the keypad, then
press
HOLD/RESUME.
––– OR –––
1. Press HOLD/RESUME and enter the channel by using the ▲
or ▼ key.
2. Press L/O to lockout the channel.
“L/O” appears on the display.
Lockout in Scanning Mode
If the scanner keeps stopping on a particular channel due to noise or frequent
transmissions,
you may want to keep that channel from scanning.
1. Wait until the scanner stops on the channel.
2. Then press L/O.
3. The scanner immediately resumes scanning because the locked out channel is
no longer
in the scanning sequence.
Lockout Tips Write down your locked-out channels and put in a convenient place
in
case you need to restore them.
Restoring a Locked-out Channel in Hold Mode
1. Press HOLD/RESUME and select the channel number you want to restore by
using the
keypad, the ▲ or ▼ key, then press HOLD/RESUME.
2. Press L/O to unlock the channel. The “L/O” disappears.
Page 23
Restoring All Locked-out Channels
You can restore all locked-out channels in a bank only when a bank is selected for
scan. If
you have deselected a bank and you want to restore all of its locked-out channels
using the
steps below, you must press PVT until “PVT” appears and then enter the number of
the
bank on your keypad.
1. Press HOLD/RESUME.
Note: You must be in Hold mode before restoring all locked-out channels.
2. Press and hold L/O for about 2 seconds. You will hear two beeps when all the
channels
have been restored.
Priority Scan
When Priority Scan is turned ON, your scanner checks the priority channel in the
banks you
selected every two seconds for activity. If a signal is present on the priority channel,
your
scanner monitors the channel until the transmission ends, then resumes normal
scanning.
You can designate one channel in each bank as a Priority Channel. By default, the
first
channel in each bank is the Priority Channel, but you can change this.
To activate Priority Scan (in either the Hold or Scan mode):
1. Press PRI. “PRI” appears.
Note: If you have locked out the priority channel, error message
appears when you select Priority mode.
2. Press PRI again to deactivate Priority Scan. “PRI” disappears.
Changing the Priority Channel
You cannot eliminate the Priority Channel, but you can change it to any one of the
50
available channels in each bank.
1. Press HOLD/RESUME.
2. Select a new Priority Channel:
a. Enter the channel number using the keypad.
b. Then press HOLD/RESUME.
3. Press and hold PRI for 2 seconds to designate this channel
as your new Priority Channel.
When you hear two beeps, the Priority Channel has been
changed. “P” appears on the display.
Note: Priority in Trunking mode works just the same, except you set them for
talkgroup IDs
instead of setting priorities for channels. The scanner only checks priority talkgroups
between transmission.
24
Page 24
25
Service Scanning
The service scan feature allows you to rotate through the following nine service
banks.
q Local Police and County Sheriffs *1
w Fire and Emergency Medical Service
e News Media
r Weather (NOAA, weather and Canadian Coast Guard broadcasts)
t CB Band
y Aircraft *2
u Railroads
i Marine Band
o Department of Transportation *1
*1) Frequencies are pre-programmed on every U.S. state.
*2) Except Aeronautic Radio Navigation (108-117.9875 MHz)
1. Press SVC to select a Service.
The current service bank icon appears on the display.
2. Continue pressing SVC until your desired Service is
displayed.
3. After a three second delay scanning begins. If you want to
start scanning immediately, press HOLD/RESUME.
Notes:• Press HOLD/RESUME at any time to hold the frequency. Press the ▲ or
▼ key to
move up or down the frequency. If you find the frequency you want to store, while
in Hold mode you can store the frequency (see page 21).
• If you want to remain on a frequency until a responding transmission is received,
press DELAY to activate the delay feature (See page 28).
• To skip a frequency, press L/O. You can program up to 100 skip frequencies for
Local Police, County Sheriffs and Department of transportation. And you can
program up to 50 skip frequencies for other services (See page 27).
• If you select POLICE or DOT, press STATE to select the desired state.
Page 25
26
Band Search
Setting a Search Band
The 20-426 can search up to 13 separate frequency ranges to help you discover
new stations
in your area.
To set a Search Bands, enter into the Band Search mode.
1. Press SRCH. The upper and lower limits of the Bands
currently selected are on the display.
2. Use the ▲ or ▼ key to select the band you want to search.
Wait for about two seconds and the scanner will begin
searching that band. Or press HOLD/RESUME to begin
immediately.
Notes:• You must set the Search Bands prior to any searching.
• The scanner automatically increases its search speed up to 300 steps per second
for bands having 5 kHz steps. (Turbo Search)
• While searching, you can change the search direction by using the ▲ or ▼
key.
Make sure which of icon, “▲SRCH” or “SRCH▼” appears on the display.
Band
Page 26
27
• While Private Scanning in the trunking banks, press SRCH, then it will move to ID
Search mode.
Search Hold Feature
1. Press HOLD/RESUME at anytime to stop the search. To move up or down 1
frequency
step, use the ▲ or ▼ key.
2. Press HOLD/RESUME to resume searching.
Data Skip
A scanner will normally stop on any transmission it receives. This
means the 20-426 will occasionally stop on data signals and
unmodulated transmissions. You can automatically skip many of
these types of transmissions during search.
1. To activate the Data Skip feature, press DATA in Scan or Search mode. “ ”
appears on the display.
2. To deactivate the Data Skip feature, press DATA again. “ ” disappears.
When Data Skip is active, your scanner may pause momentarily on an unwanted
signal
but will resume searching in two or three seconds. The Data Skip feature is active
as
well as Scan mode and Service Search mode. Data Skip does not function during
Service Scanning band (for AIR, CB, or Weather band), Priority Scan, and Trunking
mode.
Frequency Skip
If a particular frequency continues to interrupt search scanning, it is possible to set
the
scanner to skip the frequency.
To skip over a frequency, press L/O when stopping on the frequency you want to
skip or
when in Search Hold mode.
Note: You can program up to 100 skip frequencies.
The 101st skip frequency entered causes the first skipped frequency to unlock.
To restore a Locked out/Skipped channel.
1. Select the desired frequency by using the ▲ or ▼ key in Search Hold mode.
2. Press L/O, and then press HOLD/RESUME.
To restore all skipped frequencies, press and hold L/O for 2 seconds in Search Hold
mode.
27
Storing Search Frequencies
You can quickly store any frequency you find during Search.
1. During Search, press HOLD/RESUME. If you want to change
the frequency, use the ▲ or ▼ key to move up or down 1
frequency step. Then press E. Or when the scanner stops on
the frequency you want to store, press E.
2. Select a bank you want to store by using the keypad. The
smallest empty channel number and the frequency alternately
appear on the display. If necessary, you can also change the
channel by using the keypad, the ▲ or ▼ key.
3. Press E.
Note: • If the frequency you want to store exists already in a bank, you will hear an
error
tone and other channel appears on the display. (See “Duplicate Frequency Alert”
on page 22.)
• After storing the frequency, it moves to the Search Hold mode.
• If there is no free channel, the frequency you want to store will automatically be
stored in the first channel in the selected bank.
4. Press SRCH to resume searching.
Delay
To help prevent missing a reply on a specific channel or frequency, you can
program a two second
delay into any channel, frequency, service band or band search. When scan or
search stops on a channel or frequency, there is a two-second pause before the
scanning
cycle resumes.
To activate the Delay feature (in either Scan mode or Search mode):
1. For Highway Scan mode or Private Scan mode, when in Hold mode, select the
desired
frequency or channel and then press DELAY. Or when the scanner stops on an
active
frequency or channel, quickly press DELAY before it continues scanning again.
––– OR –––
1. For Search mode, while searching press DELAY.
2. “DLY” will appear on the display.
28
20-426 8/22/03 1:40 PM Page 28
29
Trunk Tracking
Your 20-426 is tracks three major types of trunked radio systems. These systems
are
described here.
✎MOTOROLA - Including Type I, Type II, Hybrid, SMARTNET, and Privacy Plus.
Motorola systems are widely used by public safety and business users. Most are on
the 800 MHz band, and recent systems are appearing on other bands. (see page
43).
✎EDACS - Including "Wideband" 9600 baud and SCAT. "Wideband" systems are
mostly on
the 800 MHz band, and are used by public safety, utilities, and business users.
Some
systems are used on the VHF and UHF bands. (see page 39). SCAT systems are
single-channel EDACS systems, and are mainly used in the Midwestern United
States.
✎LTR - These systems are mostly for business users, and found on the UHF, 800
and 900
MHz bands. (See page 42).
For details on the operation and programming for all of these systems, see pages
29-47.
When tracking these types of systems, remember these important points:
• Your scanner defaults to monitor Motorola Type II 800; however, you can change
this if
the system in your area is different. (The types of systems are discussed below.)
• The frequencies for many of the trunked public safety systems are listed in the
TrunkTracker
Frequency Guide included with your 20-426 scanner. Frequencies sometimes
change, check
with www.trunktracker.com.
• If you have internet access, you can visit scanner.Radio Shack.com or
www.trunktracker.com
for additional information, for current news and frequency information, about Trunk
Tracking Scanning.
* Motorola, SMARTNET, and PRIVACY PLUS are trademarks of Motorola Inc.
EDACS is a
registered trademark of the M/A - COM Inc. LTR is a registered trademark of E.F.
Johnson
Company.
Setting the Squelch
For trunked reception, a good setting for the SQL control is in the
center of the range with the color marker pointing up. See the
illustration.
If it is set too high, it could prevent your scanner from locking to the
Control Channel reliably. If it is set too low, it will slightly delay finding
the Control Channel. The best setting is the same as for conventional
reception, and is critical for monitoring trunked systems.
SQL push
FLASH
MUTE ALERT
Page 29
30
Programming Trunking Frequencies
There are three steps for programming a trunked system:
1. Program the Trunk Type – What type of system will the scanner be tracking,
Motorola
Type II, Type I, EDACS, LTR, etc.
2. Program the Trunked Frequencies – Within a trunked system, the frequencies
are
shared among all the users, called “Talk Groups”.
3. Program the Talk Groups – Within the trunked system, each agency or
department is
assigned a Talk Group ID. This ID must be programmed into the scanner in order
for it to
monitor that specific agency or department.
Before you start programming your scanner to track a trunked system, consider the
following:
• You can only program one trunking system in each bank of your scanner.
• Trunked frequencies must be entered while in the Trunk Programming mode.
• If you’re in the Trunk Programming mode, you cannot select channels in other
banks.
For example, if you are programming Bank 4, you can only select channels 151-200
with
the ▲ or ▼ key.
• IMPORTANT: If you are programming an EDACS ® trunked system, you must
enter the
frequencies in a specific order. Check the frequency guide included with the radio
and the
listed web sites for details.
STEP 1: Selecting Trunking System Type
The first step in a Trunk Tracking system is storing the frequencies in one of the five
available banks in your scanner.
1. Press TRUNK for 1.5 seconds.
You will hear two beeps, and “BANK” and “TRUNK” will begin to flash on the
display.
2. Select the bank you want to store the frequency by using the
keypad.
3. Select the system you want to track by using the ▲ or ▼ key,
then press E.
List of trunking systems as follows:
E2-800 (Motorola Type II 800 MHz)
E2-Hi (Motorola Type II VHF 136-174 MHz) *
E2-UHF (Motorola Type II UHF 406-512 MHz) *
E1 (Motorola Type I and Hybrid) **
Ed (EDACS® Wide Band: 9600 band)***
Ed SCt (EDACS Scat)
Lt (LTR)
* Requires programming of a Base and Spacing frequency Offset channel (See
page 45).
** Requires programming of a Fleet map (See page 44).
Page 30
31
*** Requires programming of frequencies in exact order and location.
STEP 2: Programming Trunking Frequencies
1. Select and press E. Use the keypad and (decimal key) to enter a frequency
for the trunked system.
For example, enter .
Note: To clear a mistake while entering a frequency, press
(decimal key) twice, and start over.
2. Then press E.
The “E” (EDACS), “M” (Motorola) or “L” (LTR) appears depending on the trunked
system selected.
If the frequency is out of the range of the system chosen in this step, you will hear
an
error tone, the channel number flashes and an error message appears on the
display.
3. Use the ▲ or ▼ key to select the next channel in the bank and press E.
4. Repeat steps 2 and 3 until all frequencies have been entered.
5. Press SRCH to begin searching the bank you‘ve
programmed.
Then select the programmed bank by using the keypad.
✎ Remember! To lockout the keypad to prevent re-programming of talkgroups,
you can
use Memory Lock (Refer to “Memory Lock” on page 22).
Hint: If you want to return to the previous menu screen, press HOLD/RESUME in
the
Trunk Programming mode.
Programming Talk Group ID/Scan Lists
Scan Lists
Each bank of your 20-426 can be a trunk tracking bank and it can be a conventional
scanning
bank. When you designate a bank as a trunking bank, your scanner sets up 5 Scan
Lists,
which are simply lists used to store your favorite Talk Group IDs. Each list can
contain up to
10 IDs, so you can store a total of 50 IDs for each trunk tracking bank. (250 IDs if
you use
all the banks as trunking banks!)
Scan Lists help you organize the trunking system users into categories. For
example, you
might use List#1 for police IDs, List#2 for fire department IDs, List#3 for emergency
medical
service IDs, etc. Once IDs are stored in lists, you can scan them as you scan
conventional
frequencies and you can lockout any one (up to 4) of the 5 Scan Lists by pressing
the
corresponding numeric key. When an ID is active, the Scan List number will appear
on the
display. You can program your Scan Lists either manually or during Trunking
Search mode.
Check the web site www.trunktracker.com for a complete list of talkgroups for
your area
that you can program into your Scan Lists.
Page 31
32
In order to program Talk Group ID’s, you must first complete Step1–“Selecting
Trunking
System Type”, page 30 and Step 2 – “Programming Trunking Frequencies”, page
31.
1. After programming a frequency, press HOLD/RESUME to return to the main
screen of
system type selected and select . Then press E.
2. Select the Scan List location by using the ▲ or ▼ key.
3. Enter the Talk Group IDs for each trunk system as follows.
To enter a Type 2 Talk Group ID:
1. Enter the ID you want to store by using the keypad.
2. Press E.
To enter a Type 1 ID:
For a Type I ID, the Block number, Fleet number and Subfleet number make up the
Talk
Group ID number. For detail please see page 59.
1. Enter the ID you want to store by using the keypad (ID = Block number + Fleet
number +
(decimal key) + Subfleet number).
2. Press E.
To enter a Full EDACS ID®:
1. Enter the Agency number.
2. Press (decimal key) for the “dash”.
3. Enter the Fleet number and Subfleet number.
4. Press E.
To enter a Partial EDACS® ID:
1. Enter the Agency number you want to store.
Use the (decimal key) for the "dash".
2. Press E.
Or you can program all the Talk Group numbers within one fleet of an Agency.
1. Enter the Agency number.
2. Press (decimal key) for the “dash”.
3. Enter the Fleet number.
4. Press E.
Hint: Remember that Radio Shack's AFS format allows you to enter full or partial
EDACS IDs for
powerful flexibility in all modes. Be sure to read the section "EDACS Reception" on
page 39 to learn how this works.
Note: The 20-426 default to "AFS" talkgroup displays for EDACS® only.
To enter a LTR ID:
For a LTR ID, the Area Code, Home Repeater number and ID make up the Talk
Group ID.
Page 32
33
Please see page 42 for more information.
1. Enter the Area Code.
2. Enter the Home Repeater number.
3. Enter the ID you want to store
4. Press E.
Note: To clear a stored ID while entering an ID, press 0 and E successively, and
start over.
Receiving Trunked Systems
When you have properly programmed all the frequencies for a trunked system, you
can
monitor the system in several different ways. You will find that Search, Hold,
Lockout, Scan
and Delay are all similar to conventional scanning.
✎ ID SCAN lets you receive those talkgroups that you store in Scan Lists.
✎ ID SCAN HOLD lets you selectively listen to a talkgroup in your Scan Lists.
✎ ID SEARCH lets you hear all system talkgroup activity. This is the best way to
get
started.
✎ ID SEARCH HOLD works with Search mode to let you quickly freeze reception
on an
interesting transmission. Or you can manually specify a talkgroup with DIRECT
ENTRY in ID HOLD.
✎ ID LOCKOUT works with Search and Scan to exclude talkgroups that you don't
want
to hear.
✎ ID DELAY works with each talkgroup to be delayed when the communication
ends.
When receiving EDACS systems, remember that Radio Shack's AFS talkgroups
give you powerful
flexibility. In a few key presses, you can specify a single talkgroup, a fleet, or an
entire
agency in all the above modes. Read the section "EDACS Reception" to
understand how
this works.
Hint: If the scanner is not in the Trunking mode, you can enter the Trunk mode by
pressing
TRUNK. Pressing TRUNK in the Trunking mode will move to the Private Scan Hold
mode.
ID Scan Mode
1. When in the Trunking mode, press PVT to begin scanning the lists you have
programmed.
If you haven't programmed any IDs, the scanner cannot stop
on an active conversation.
2. To remove a Scan List from active scanning, press the
number of the Scan List on your keypad.
The Scan List indicator turns Off, and the IDs in that list are not scanned.
20-426 8/22/03 1:40 PM Page 33
Note: One Scan List must always be active. If you try and deactivate all the Scan
Lists,
Scan List 1 will automatically be active.
3. To restore a Scan List to active scanning, press its number again.
✎ Remember! When you press TRUNK in the Trunking mode, you can be out of
the
Trunking mode and enter into Private Scan Hold mode.
Note: • appears on the display during Trunk Scan instead of simply .
ID Scan Hold Feature
If you want to stop on a ID during ID scanning, press
HOLD/RESUME.
To directly access a specific ID location:
There are several ways to access a specific ID quickly.
1. Press HOLD/RESUME to enter into Hold mode.
2. Using the keypad, ▲ or ▼ key, enter the ID location number
(See page 31).
3. Press HOLD/RESUME.
If you want to resume scanning, press HOLD/RESUME.
ID Search Mode
Once you have programmed all the frequencies for a trunked system, Search will let
you
immediately start hearing transmissions.
When in the Trunking mode, press SRCH and the scanner begins to find any active
IDs.
When the scanner finds any ID, you will hear it.
Talkgroups display differently in Motorola, EDACS and LTR systems. You should
read the
appropriate parts of this guide to understand the formats.
The display indicates the bank and the type of trunked system you are monitoring.
While
monitoring on ID, press the ▲ key, and the scanner will check if any other IDs are
active.
Regardless of the system, you won't know exactly who you are receiving until you
listen for
a while, or refer to frequency guides or internet sites such as
www.trunktracker.com.
Of course, figuring out who each ID represents is half the fun of Trunk Tracking.
Later, when you learn more about a system, you will want to store lists of talkgroups.
Then
you can scan specific agencies and users, and use the many other features your
radio
provides.
34
Page 34
35
ID Monitor Mode
By using ID Monitor mode, you can determine which talk groups are the most active
without
hearing conversations.
1. Press and hold SRCH for 2 seconds until you hear two beeps. Then begins
flashing and all active talk group IDs appear on the display every 0.5 seconds.
2. To activate ID search mode, press SRCH
Note: Lockout ID also appears on the display.
ID Search Hold and Direct Entry ID in Hold Mode
Just like in Conventional Search, Hold lets you pause ID Search on an interesting
transmission without storing the talkgroup into memory.
If you hear an interesting ID during Search mode,
and want to continue listening to it -• Press HOLD/RESUME to stop the search.
If you want to listen to a specific ID, while in Hold mode -• Use the keypad to enter the ID you want and press
the ▼ key.
If you want to resume searching -• Press HOLD/RESUME to return to Search mode.
Note: ID Hold feature is also applied to ID Scan mode.
Programming Scan Lists During Search
To select a Scan List location and store an ID during Search
mode, follow these steps:
1. When your scanner stops on an ID you want to store, press
HOLD/RESUME.
2. You can change the Scan List memory location by using the
▲ or ▼ key. And then press E.
3. Press SRCH to return to Trunk Tracking Search mode.
Deleting a Stored ID
To delete a stored ID:
1. Press HOLD/RESUME in the ID Scan mode.
2. Select the Scan List location you want to delete by using the ▲ or ▼ key.
3. Press 0.
4. Then press E.
Page 35
36
ID Lockout
Like conventional scanning, it’s possible to lockout unwanted traffic. This is
particularly
important in trunked systems because in many areas, water meters, door alarms,
traffic
signals, and other mechanical devices are assigned IDs just like other users. Also
some
departments scramble or encrust their communications, and you may want to lock
out these
unintelligible broadcasts.
To Lockout an ID, press L/O on the ID you want to lockout.
The ID is locked out. You can Lockout up to 100 IDs. The 101st skip frequency
entered
causes the first skipped freqnency to unlock.
Note: If you Lockout an ID in Search mode, it is also locked out in Scan List mode.
Conversely, if you Lockout an ID while in Scan List mode, it is locked out in Search
mode. For information about Scan Lists see page 31.
EDACS BLOCKOUT is a powerful form of ID Lockout that can be used only with
AFS and
EDACS systems. This feature lets you lockout entire Agencies or Fleets, not just
individual
talkgroups. Using EDACS Blockout you can, for example, prevent Search from
stopping on
any of hundreds of talkgroups in the Utilities agency. You can do this with just a few
key
presses. To use this mode just enter the Agency-part, or the Agency-Fleet part, of
the
talkgroup code and press L/O. For example, to Blockout Agency 4 in Trunk Search,
press
HOLD/RESUME, 0, 4, (decimal key), and then L/O. For other ways to use partial
AFS
entry, be sure to read the section "EDACS Reception".
Review ID Lockout
You can check all IDs already locked out.
1. Press and hold TRUNK for 1.5 seconds in the Trunking mode.
2. Select the bank you want to review by using the keypad, and then the trunked
system
selected appears on the display. Then press E.
3. Select by using the ▲ or ▼ key ,and then press E.
4. You can see the locked out IDs by using the ▲ or ▼ key.
Hint: Press and hold L/O for 2 seconds to check all locked out IDs when in the
Trunking
mode.
Restoring Locked-out IDs
To restore a single ID, follow these steps:
• While in locked out review mode, select the locked out ID you want to restore and
press
L/O.
The ID is restored and “L/O” disappears.
To restore all locked out IDs in a bank once:
• While in locked out review mode, press and hold L/O for 3 seconds. All locked out
IDs in a
bank are restored.
Page 36
37
Setting the Delay Mode for Trunking Mode
A default delay of 2 seconds is automatically set for each talkgroup for ID Scan
mode and ID
Search mode. To set the delay feature on or off, press DELAY while trunking,
“DLY” will
appear or disappear depending on your setting.
Trunking Frequency Confirmation
You can check the frequency while a talkgroup ID is active.
Press the ▼ key ,and the active frequency on which the talk group is transmitting
will flash on
the display. Or press and hold the ▼ key for 2 seconds, the ID and the frequency
alternately
appears on the display. To cancel this mode, press the ▼ key again.
Hint: This feature is applied to ID Scan mode and ID Search mode.
Setting Priority in Trunking Mode
You can set priority in your Scan lists, just as you do in your conventional ones.
Default
setting for the Priority ID is the first location in each Scan List. You can set the
priority by
pressing and holding PRI for 2 seconds in ID Scan Hold mode. After you’ve set up
your
Scan List, press PRI to activate it.
It’s very similar to conventional priority although there is no "interrupt" during the
transmissions. Priorities are checked in between transmissions.
With Priority ON, you can hold on an ID in your Scan List, such as Scan List 3,
memory
location 7, and the scanner will check all the priorities in all the active Scan Lists in
between
any transmissions on the ID on which you’re holding. The lowest numbered priority
will be
checked first. For example, the Priority ID in List 1 will be checked before the
Priority in List
2, etc.
Note: • This function does not work in LTR tracking.
• Priority Scan does not operate when Priority IDs are locked out.
Moving between Scan List Memories
There are a number of ways to step and move through your Scan List memories:
1. Press HOLD/RESUME in the ID Scan mode and use the ▲ or ▼ key to
move to up or
down.
2. Or, press HOLD/RESUME in the ID Scan mode, next press 0-9 (scan list
number), then
press 0-9 (memory position). For example to move to Scan List 4, memory position
10,
press: HOLD/RESUME, 4, 0, HOLD/RESUME
Page 37
38
Multi-Track
The 20-426 allows you to track more than one system at a time. Here are some
highlights of
this feature:
✎ You can actually track up to 5 trunking systems at one time.
✎ You can trunk scan, or search and scan conventional frequencies at the same
time.
✎ You can program conventional frequencies in the same bank as trunking
systems.
After the scanner finishes checking a trunked system for activity, it will
conventionally
scan the other frequencies in the bank (remember, only trunking frequencies are
programmed in Trunk mode).
To scan a mix of trunking and conventional banks, select the banks you wish to be
active,
and then press TRUNK. The scanner will instantly begin scanning. You can switch
to Search
mode and the scanner will search for any active ID’s on the system.
Note: To switch ID Scan or ID Search, press PVT or SRCH in the trunked system.
Multi-Track Operational Details
When more than one trunk system is active (for example two or more trunked
systems or a
trunked system and one or more conventional frequencies), the radio jumps
between
systems/frequencies as follows:
TRUNK SCAN: The scanner moves to a trunked system and looks for IDs in your
Scan
List(s) for up to 1 second. If it finds no activity on your programmed talkgroups, it
moves
on to conventional channels in the same bank or to the next active bank.
If the scanner finds a talkgroup in one of your active Scan Lists, you will begin to
hear that
communication and the scanner will of course display the proper talkgroup number.
When
the communication ends, the scanner will wait for 2 seconds for any further replies
and, if
none, the scanner will move to the conventional channels in the same bank or to the
next
bank.
The scanner will not look for any other IDs within the same trunked system (as this
would slow the scan process). If you press the ▲ key while you are listening to
one ID,
the scanner will check to see if another ID in your Scan List is active. It will disregard
the
ID to which you were just monitoring.
TRUNK SEARCH: This mode works similarly to Trunk Scan. If the scanner finds
any (nonlockedout) ID when it checks the control channel, you will hear it. You will then hear any
replies that follow within 2 seconds. After that the scanner will move on and not
continuously search the system for additional IDs (on busy systems you would
never leave
the system if this were the case). If you press the ▲ key while monitoring one ID,
the radio
will check if any other IDs are active (it will disregard the ID you just left), and if none
are
active, it will move on.
Page 38
38
Multi-Track
The 20-426 allows you to track more than one system at a time. Here are some
highlights of
this feature:
✎ You can actually track up to 5 trunking systems at one time.
✎ You can trunk scan, or search and scan conventional frequencies at the same
time.
✎ You can program conventional frequencies in the same bank as trunking
systems.
After the scanner finishes checking a trunked system for activity, it will
conventionally
scan the other frequencies in the bank (remember, only trunking frequencies are
programmed in Trunk mode).
To scan a mix of trunking and conventional banks, select the banks you wish to be
active,
and then press TRUNK. The scanner will instantly begin scanning. You can switch
to Search
mode and the scanner will search for any active ID’s on the system.
Note: To switch ID Scan or ID Search, press PVT or SRCH in the trunked system.
Multi-Track Operational Details
When more than one trunk system is active (for example two or more trunked
systems or a
trunked system and one or more conventional frequencies), the radio jumps
between
systems/frequencies as follows:
TRUNK SCAN: The scanner moves to a trunked system and looks for IDs in your
Scan
List(s) for up to 1 second. If it finds no activity on your programmed talkgroups, it
moves
on to conventional channels in the same bank or to the next active bank.
If the scanner finds a talkgroup in one of your active Scan Lists, you will begin to
hear that
communication and the scanner will of course display the proper talkgroup number.
When
the communication ends, the scanner will wait for 2 seconds for any further replies
and, if
none, the scanner will move to the conventional channels in the same bank or to the
next
bank.
The scanner will not look for any other IDs within the same trunked system (as this
would slow the scan process). If you press the ▲ key while you are listening to
one ID,
the scanner will check to see if another ID in your Scan List is active. It will disregard
the
ID to which you were just monitoring.
TRUNK SEARCH: This mode works similarly to Trunk Scan. If the scanner finds
any (nonlockedout) ID when it checks the control channel, you will hear it. You will then hear any
replies that follow within 2 seconds. After that the scanner will move on and not
continuously search the system for additional IDs (on busy systems you would
never leave
the system if this were the case). If you press the ▲ key while monitoring one ID,
the radio
will check if any other IDs are active (it will disregard the ID you just left), and if none
are
active, it will move on.
Page 38
EDACS® Reception
EDACS® Tracking
TrunkTracker III now allows tracking of EDACS® trunked systems. Until now
these widely
used systems have been almost impossible to monitor with a conventional
scanner. With
your TrunkTracker III listening to EDACS(s) is remarkably easy, and perhaps
even easier
than conventional scanning.
EDACS systems use 'Transmission Trunking', which means that each
transmission is
assigned a new frequency. As the conversation moves through the system's
frequencies,
your TrunkTracker III automatically follows it.
This chart shows a 30 second sample of EDACS transmissions. Eight different
talkgroups
are using the system as their transmissions switch between the thirteen system
frequencies.
Notice how the dotted line shows talkgroup 02-023 moving from channel to
channel. Your
20-426 can clearly and automatically follow this talkgroup, or any other, as you
select.
EDACS systems are organized in a logical way that keeps related talkgroups
together. Your
scanner is designed to take maximum advantage of this organization to make
your scanning
easy. It lets you zero in on just the part of the system you want to hear, whether
it is an
individual channel, an entire department or city.
Programming EDACS System Frequencies
When you program EDACS frequencies, it is critical that you store each one in
the
CORRECT LOCATION. By the nature of EDACS systems this is necessary for
tracking. This
often is not the frequency order, so you must be sure you have the right
sequence. Sources
for this information can be found at scanner.Radio Shack.com.
An EDACSR Trunked system
This chart shows how talkgroups are organized within an
EDACS system at the Agency level. The individual
talkgroups cannot be shown at this scale because there
are over 2000. However the chart can show the 16
Agencies in this example. The system is logical and easy
to understand. EDACS systems are typically arranged in
an outline structure.
The system users are given blocks of talkgroups. Sizes
vary but most large cities and other agencies have blocks
of 128 channels. Smaller cities have only 64 or 32
channels.
In this example, the County Sheriff is agency 01. The city
of Sullivan is Agency 03. Adams Hill and Matthew Junction
share Agency 08.
Your scanner shows EDACS talkgroups in AFS (AgencyFleet-Subfleet) format. This helps you see, at a glance,
who you are monitoring. And with the partial-entry feature
you can easily include nearby, related channels in the
same Fleet or Agency. You can just as easily exclude
entire unwanted Fleets and Agencies.
When in Search mode, with the system frequencies
programmed, and your scanner locked to the control
channel, you can select a desired city by keying in the
Agency part of the AFS talkgroup. For example, in Hold
mode you can select the entire city of Sullivan with 4 key
presses 0, 3,
(decimal key), SRCH key.
When you hear an interesting talkgroup, in Hold mode
capture it to your Scan List by pressing E during the
transmission.
Or hold on it by pressing HOLD/RESUME.
If you want to monitor the Sullivan Police Dispatch channel (which is talk
group 03-062), press 0, 3, (decimal key), 0, 6, 2, the ▼ key. Your scanner
can also work in decimal format.
Talkgroup 03-62 in decimal format is 402. But decimal format does not give you
any information
about the system hierarchy.
For example Sullivan, in decimal, uses channels from 384 to 511. This is not as
easy to
remember as Agency 03. But decimal is useful if you need to work from decimal
talkgroup lists.
41
Special EDACSR Features
AFS Partial Entry Feature
AFS is Radio Shack's method of encoding EDACS talkgroups.
AFS stands for 'Agency-Fleet-Subfleet'.
AFS talkgroups are used in all EDACS reception -- in ID Search, ID Lockout
and ID Scan. The
powerful AFS Partial Entry feature designed into the 20-426 lets you use either
a complete
talkgroup code, or just the most significant part.
This feature lets you expand or narrow searching and
scanning to one of 4 levels. By entering only the desired part
of an AFS talkgroup, you can select 128 talkgroups, 8
talkgroups, or a single talkgroup.
For example, you could program every talkgroup in a police
department with just 4 key presses. You can use the AFS
Partial Entry feature anywhere you need to specify EDACS
talkgroup.
Your 20-426 can also enter or display EDACS talkgroups in decimal format
(0-2047).
1. Press and hold TRUNK for 1.5 seconds and select the bank you want to
change.
2. Use the ▲ or ▼ key to select , then press E.
3. Use the ▲ or ▼ key to select , then press E.
4. Use the ▲ or ▼ key to select or , then press
E.
You can use this feature to translate decimal talkgroups lists to the much more
powerful
AFS format.
Examples of how you might use AFS are shown above in the description of an
EDACS
trunked system, and elsewhere in this manual. It is very easy to use. Be sure to
become
familiar with AFS Partial Entry, and your scanning will become far more
flexible and efficient.
EDACS ID Range Search
When the scanner searches EDACS talk group IDs, the scanner can search
within a range
you set for Agency or Fleet listings. For example if you want to search within
the 01 agency,
while in Hold mode press 0, 1, (decimal key) then SRCH. Or if you want to
search within
the 01 agency and 01 fleet, while trunking press 0, 1, (decimal key), 0, 1, then
SRCH.
To stop the ID range search, press SRCH.
EDACS SCAT
With the EDACS SCAT feature, the data stream transmissions will be
eliminated allowing
you to clearly monitor the voice communications on EDACS SCAT systems.
To monitor EDACS SCAT systems you only need to program the frequency in
the Trunk
Tracking Programming mode. You do not need to enter group ID’s.
Note: As EDACS SCAT is different from the other tracking feature, and it is not
a feature
which the scanner tracks any ID, you do not need to program Talk Group ID’s.
LTRR Reception
LTRR Tracking
LTRR (Logic Trunked Radio) systems are trunking systems used primarily by
business or
private communications service providers, such as taxicabs, delivery trucks,
and repair
services. These systems encode all trunking information as digital subaudible
data that
accompanies each transmission. Users on an LTR system are assigned to
specific
talkgroups, which are identified by the radio as six digit numbers.
These numbers are in the form AHHUUU, where:
A= Area code (0 or 1)
H= Home repeater (01 through 20)
U= User ID (000 through 254)
When the scanner receives a transmission on a channel set to the LTR mode, it
first
decodes the LTR data included with the transmission. In the ID Search mode,
the scanner
stops on the transmission and displays the talkgroup ID on the display. In the
ID Scan mode,
the scanner only stops on the transmission if the LTR data matches a talkgroup
ID that you
have stored in the bank’s talkgroup ID list and have not locked out.
LTR systems are frequently programmed so that each radio has a unique ID
code.
Motorola Reception
Motorola Tracking
There are really two types of Motorola trunking systems. These are usually
referred to as
Type I and Type II systems. Type I only occurs on some 800 MHz systems. All
VHF and
UHF trunking systems use Type II.
One important distinction between these two systems is the amount of data
transmitted by
each radio when its push-to-talk button (PTT) is pressed. Every radio in a
trunked system is
assigned a unique ID so the central site computer can identify it when it’s used.
Both Type I
and Type II systems place radios (or radio users) into groups, called talkgroups,
and these
talkgroups are also assigned unique IDs. Some radios have access to only one
talkgroup,
while others have access to many talkgroups. The talkgroup(s) each radio can
access is
called the radio’s affiliation(s).
In a Type II system, when someone uses their radio, only the radio ID is
transmitted when
PTT is pressed, whereas in a Type I system the radio ID and its current
affiliation are both
transmitted when PTT is pressed.
Why the difference? Type II systems are slightly more advanced because the
central
computer maintains a database which is used to determine each radio’s
affiliation(s).
Changes to a Type II system are easier than Type I because the system manager
only
needs to update the database instead of reprogramming individual radios.
Another difference between the systems is that Type I systems are arranged in
a FleetSubfleet hierarchy. For example, its possible for a city using a Type I system to
designate 4
Fleets, each with 8 Subfleets. Their fleets might be the Police Department, the
Fire
Department, Utilities, and Administration. The Police may decide to further
divide their fleet
into subfleets such as Dispatch, Tactical Operations, Detectives, North, South,
East and
West Side Patrols, and Supervisors. All the available police radios would then
be assigned
to one of the police subfleets. Determining the exact Fleet-Subfleet hierarchy for
a particular
area is referred to as Fleet Map Programming, which is discussed further in this
manual.
The disadvantage of a Type I system is that when PTT is pressed, the brief
burst of data
must contain the radio’s ID and its Fleet and Subfleet. This is three times the
amount of data
a Type II system radio sends, and as a result Type I systems usually
accommodate fewer
users than Type II systems.
Even though there are many Type II systems, Type I systems are still in use.
There are also
Hybrid systems which are a combination of both Type I and Type II. Your
scanner defaults
to monitor Type II systems, but its possible to select a Preprogrammed Fleet
Map or create
a Custom Fleet Map for your area.
For VHF and UHF Type II trunking systems, you will need to know the base,
spacing
frequencies and offset channels. See page 45 for details.
Fleet Map Programming
If you have programmed a trunk tracking bank for Motorola, press TRUNK to
start MultiTrack, and you will see user IDs on the display. Since the 20-426 defaults to
Type II systems,
all the IDs will appear as numbers. However, if you notice a mix of odd and even
user IDs,
for example 6477, 2560, 6481, 6144, 1167, etc., then you are probably
monitoring either a
Type I or Hybrid systems.
You may also notice that you are missing responses when you hold on an active
ID. Unlike
Type II, Type I/Hybrid systems require a Fleet Map that sets specific
Fleet-Subfleet
parameters. It is easy to select a Fleet Map for your scanner; what is not always
easy is
selecting or programming a map that matches your particular area.
There are 16 preset Fleet Maps listed in the Appendix that you can choose, and
these are
usually a good place to start when setting up a Type I/Hybrid trunk tracking
bank. If you
choose a preset map and still have difficulty following complete conversations,
then you'll
have to program your own Fleet Map.
Selecting Preset Fleet Map
1. Press and hold TRUNK for 1.5 seconds and select the bank you want to
change.
2. Use the ▲ or ▼ key to select (Type 1 system), then press E.
3. Use the ▲ or ▼ key to select , then press E.
4. Use the ▲ or ▼ key to select the map you want, then press
E. The scanner returns to FLEET Map list item.
Note: You will now begin to see Type I Fleet-Subfleet IDs. For
example, 100-12, 100-9, 000-12, 400-8, etc.
See "User Defined Fleet Maps in the Appendix" for
more information about Type I IDs.
How do you know if the preset map is correct? You will have to listen to see if
you're
following complete conversations. If not, you should try another preset map.
Programming a User Fleet Map
You may want to read "User Defined Fleet Maps" in the Appendix before
programming a
Fleet Map. It contains a detailed explanation of Scanner Fleet Map
Programming, as well as
a table listing the Fleet Map Size Codes.
1. Press and hold TRUNK for 1.5 seconds and select the bank you want to
change.
2. Use the ▲ or ▼ key to select (Type 1 system), then press
E.
3. Use the ▲ or ▼ key to select , then press E.
4. Use the ▲ or ▼ key to select , then press E.
5. Use the ▲ or ▼ key to select the size code for the first block,
then press E.
The next available block appears on the display.
6. Repeat step 5 until you have selected a size code for each
block.
For details about each size code, see "Fleet Map Size Codes"
in the Appendix.
Programming a Hybrid System
A Hybrid system is simply a Type I system with some blocks designated as Type
II blocks.
To program a Hybrid system, follow the steps listed in "Programming a User
Fleet Map" in
the previous section. However, if you want a block to be Type II, select Size
Code .
When you begin searching a trunking bank with a Hybrid Fleet Map, you will
see both types
of system IDs. That is, Type II IDs usually appear as an even number without a
dash; Type I
IDs appear as a three or four digit number, followed by a hyphen, followed by a
one or two
digit number.
Setting the Base, Spacing Frequencies and Offset Channel for Motorola
VHF/UHF Trunked Systems
To properly track Motorola VHF and UHF trunked systems, you must enter
what is known as
the Base, Spacing Frequencies and Offset Channels for each system.
To find these out, check the scanner.Radio Shack.com or www.trunktracker.com
and other
web sites and frequency resources.
To enter the Base, Spacing Frequencies and Offset Channel: (You can set up to
three sets
of these, but almost all systems only use one set)
1. Press and hold TRUNK for 1.5 seconds and select the bank you want to
change.
2. Use the ▲ or ▼ key to select (Motorola Type2 VHF) or (Motorola Type2
UHF), then press E.
3. Use the ▲ or ▼ key to select , then press E.
4. Use the keypad to enter Configuration Block Number(1-3).
5. Use the keypad to enter a new Base Frequency, then press
E.
6. Press the ▲ key and select for entering the Spacing
Frequency.
7. Use the keypad to enter a new Spacing Frequency, then
press E.
Note: You can only enter within a range of 5-100 kHz, and 5 or
12.5 kHz multiples.
8. Press the ▲ key and select for entering the Offset
Channel.
9. Use the keypad to enter a new Offset Channel, then press E.
Note: . You can only input within a range of 380-759.
. If the system is not tracking properly, you may need to
try a new Base Frequency or Offset Channel, or you
may be missing frequencies from the system.
. You can set up to three Base, Spacing and Offsets for Motorola VHF/UHF
trunked
systems.
Toggling the Status Bit
On Type II trunking systems there is a method by which specialized types of
communications
utilize unique talkgroup numbers. An emergency call will occur on a unique
talkgroup from its
primary assignment, for example. Because the 20-426 defaults to Status-Bit ON
mode, you
never need to worry about missing these transmissions. If you have
programmed talkgroup
33264 into Scan List memory, for example, and there is an emergency call
within the group,
you will hear it on 33264.
The only time you may wish to turn Status Bits OFF is if you're trying to figure
out the proper
Fleet Map of a Type I trunking system.
1. Press and hold TRUNK for 1.5 seconds and select the bank you want to
change.
2. Use the ▲ or ▼ key to select (Motorola TYPE2 800MHz), (Motorola Type2
VHF) or (Motorola Type2 UHF), then press E.
3. Use the ▲ or ▼ key to select , then press E.
4. Use the ▲ or ▼ key to select or , then press E. The scanner returns to
Status Bit list item.
Control Channel Only Mode
When this function is activated, trunking is performed using Control Channel
data only.
Voice channel (also known as "DATA channel") frequencies do not have to be
programmed
into memory. This feature only applies to Motorola 800 MHz systems.
1. Press and hold TRUNK for 1.5 seconds and select the bank you want to
change.
2. Use the ▲ or ▼ key to select (Motorola Type2 800MHz) or (Motorola Type1
800 MHz), then press E.
3. Use the ▲ or ▼ key to select , then press E.
4. Use the ▲ or ▼ key to select a plan from 4 frequency plans,
then press E. The scanner returns to Control Channel Only
list item.
Note: You must choose a plan before you begin to Control Channel Trunk (Only
when 800
MHz system is selected).
When you deselect Control Channel only mode, appears on the display.
Read the descriptions of the Plan 1~4 for details on which may apply for you.
PL1 (plan 1): This plan is the most common. Use Plan 1 if the last three digits of
ALL the
frequencies in use end in one of the following three digits: 125, 375, 625, or 875
(example:
856.1125, 860.7375, 859.6625, 855.8875).
PL2 (plan 2): If the last three digits of frequencies are less than 860.000 and end
in one of
the following three digits (125, 375, 625, or 875) and if ANY other frequencies
end in (000,
250, 500, or 750) use Plan 2.
PL3 (plan 3): If the last three digits of ALL the frequencies in use end in one of
the
following three digits (000, 250, 500, or 750) use Plan 3.
PL4 (plan 4): If the last three digits of frequencies are less than 866.0000 and
end in one
of the following three digits (000, 250, 500, or 750) and if ANY other frequencies
end in
(125, 375, 625, or 875) use Plan 4.
Of course you will know the Control Channel frequency itself so that will help
you determine
the proper plan. If you try one plan and you receive errors (such as the scanner
jumping to
channels that are obviously not part of the system), you should try an alternate
Plan.
Note: . You can assign a Fleet Map to TYPE 1 or Hybrid systems scanned in
Control
Channel Only mode by going into the Trunk Programming mode. You can also
program
IDs, set a delay, and all the other parameters for systems scanned in this
mode. You can then either search the system to find new IDs or you can
program
IDs into memory and then scan them.
. The Control Channel Only feature is an extremely powerful tool. You can use it
to
determine if systems you are familiar with may have added new frequencies or
you
can use it to discover new systems by simply finding active control channels
(using
Search) and then programming them for Control Channel operation only.
Remember that this feature only applies to Motorola 800 systems, that you do
have
to set the proper system type (800 MHz of Type 1 or Type 2) and you do have to
program the Control Channel frequency into memory and identify the frequency
as
trunked in the Trunk Programming mode.
Disconnect Tone Detect Option (End Code)
When this function is disabled, the radio looks for squelch before returning to
the Control
Channel instead of waiting for the Disconnect Tone. Only in rare instances will
you need to
adjust the default settings. The condition to return to Control Channels
depends on whether
the signal is present or not.
1. Press and hold TRUNK for 1.5 seconds and select the bank you want to
change.
2. Use the ▲ or ▼ key to select (Motorola TYPE2 800MHz), (Motorola Type2
VHF) or (Motorola Type2 UHF), then press E.
3. Use the ▲ or ▼ key to select , then press E.
4. Use the ▲ or ▼ key to select or , then press E.
Note: Set the SQL control so that you hear a hissing, and the scanner will
remain on the
voice channel (even when a disconnect tone is transmitted or there is no signal
at
all).
Remote Interface
You can communicate and program your 20-426 in numerous ways with
peripheral devices
using a Remote Interface Cable port. This radio offers the following modes:
. PC Control mode
Program and control your scanner from a PC using Radio Shack’s 20-426
Scanner Software.
. Clone mode
Clone all the frequencies, trunking talkgroups, and fleet maps programmed into
your
scanner to another 20-426 scanner or another 20-426.
PC Control Mode
To connect Scanner to PC:
Plug the scanner end of the RS232C straight cable into the remote port which is
on the rear
of the scanner. Plug the other end of the cable (DB-9 serial connector) into a
personal
computer’s serial port. A few PC’s may require an adapter, most will not. Of
course, make
sure your PC is turned ON.
To program your scanner:
You can program and control your scanner remotely from a PC using Radio
Shack’s 20-426
Scanner software.
After connecting the scanner to a PC, turn the scanner ON.
To use the Remote (PC Control) mode, you must install Radio Shack’s 20-426
Scanner software
and use as directed. Make sure that your scanner is connected to the serial port
of the PC
using the RS232C straight cable.
Start Remote Mode and Change Transfer Speed:
1. Press and hold RMT for 2 seconds to activate the Remote
mode.
2. Select the transfer speed except for , then press E and
the scanner will start Remote mode.
A unique feature of the 20-426 is that all the front panel keys on the radio
remain operational
in Remote mode.
For information on purchasing 20-426 Scanner software to program and control
your 20-426,
you can contact the following:
Radio Shack Parts Department (800) 554-3988
(Hours are from 8:00 a.m. to 5:00 p.m. Central Time
Monday through Friday)
scanner.Radio Shack.com
PC Control Parameter
For your information:
Transfer speed : 9600/19200/38400/57600 bps (adjustable)
Start/Stop bit : 1 bit, 1 bit
Data Length : 8 bit
Parity Check : None
Code : ASCII code
Flow Control : None
Return Code : Carriage Return only
Clone Mode
You will need to purchase a RS232C straight cable a null modem adapter.
RS232C straight
cables are available as male to male or male to female. Even if the RS232C
straight cable
you buy already has the male to male connectors, you will still have to have the
null modem
adapter. On the next page you will see the pin connections that are internal to a
standard
device. (These items are available at your local electronics stores.)
Start Remote Mode and Change Transfer Speed:
1. Press and hold RMT for 2 seconds to activate the Remote
mode.
2. Select the transfer speed except for , then press E and
the scanner will start Remote mode.
A unique feature of the 20-426 is that all the front panel keys on the radio
remain operational
in Remote mode.
For information on purchasing 20-426 Scanner software to program and control
your 20-426,
you can contact the following:
Radio Shack Parts Department (800) 554-3988
(Hours are from 8:00 a.m. to 5:00 p.m. Central Time
Monday through Friday)
scanner.Radio Shack.com
PC Control Parameter
For your information:
Transfer speed : 9600/19200/38400/57600 bps (adjustable)
Start/Stop bit : 1 bit, 1 bit
Data Length : 8 bit
Parity Check : None
Code : ASCII code
Flow Control : None
Return Code : Carriage Return only
Clone Mode
You will need to purchase a RS232C straight cable a null modem adapter.
RS232C straight
cables are available as male to male or male to female. Even if the RS232C
straight cable
you buy already has the male to male connectors, you will still have to have the
null modem
adapter. On the next page you will see the pin connections that are internal to a
standard
device. (These items are available at your local electronics stores.)
Start Remote Mode and Change Transfer Speed:
1. Press and hold RMT for 2 seconds to activate the Remote
mode.
2. Select the transfer speed except for , then press E and
the scanner will start Remote mode.
A unique feature of the 20-426 is that all the front panel keys on the radio
remain operational
in Remote mode.
For information on purchasing 20-426 Scanner software to program and control
your 20-426,
you can contact the following:
Radio Shack Parts Department (800) 554-3988
(Hours are from 8:00 a.m. to 5:00 p.m. Central Time
Monday through Friday)
scanner.Radio Shack.com
PC Control Parameter
For your information:
Transfer speed : 9600/19200/38400/57600 bps (adjustable)
Start/Stop bit : 1 bit, 1 bit
Data Length : 8 bit
Parity Check : None
Code : ASCII code
Flow Control : None
Return Code : Carriage Return only
Clone Mode
You will need to purchase a RS232C straight cable a null modem adapter.
RS232C straight
cables are available as male to male or male to female. Even if the RS232C
straight cable
you buy already has the male to male connectors, you will still have to have the
null modem
adapter. On the next page you will see the pin connections that are internal to a
standard
device. (These items are available at your local electronics stores.)
To connect the Scanner to Scanner:
Plug the male end of the RS232C straight interface cable into the
remote port on the rear of one of the two scanners. Then connect the
DB-9 to DB-9 null modem adapter to the cable. Plug the other end of
the null modem adapter into the other scanner (DB9 Gender Changers
are also available at your local electronics store.).
You can clone all of the programming of one 20-426 into another, including
frequencies,
talkgroup IDs, delay settings, etc. After connecting the two scanners, turn the
radios ON.
Prepare each scanner for clone mode as follows.
After connecting the two scanners, make sure the scanners are turned off.
1. While you press and hold E, turn the radio on for each scanner.
2. Determine the scanner which has the frequency data that you want to
transfer. This one
must be set up as the "First Unit", and the other must be set as the "Clone
Unit".
3. On the scanner that is the "Clone Unit", use the ▲ or ▼ key
to select , then press HOLD/RESUME.
4. On the scanner that is the "First Unit", use the ▲ or ▼ key to
select , then press HOLD/RESUME.
Care and Maintenance
General Use
. Turn the scanner OFF before disconnecting the power.
. Always write down the programmed frequencies in the event of memory loss.
. If memory is lost, simply reprogram each channel.
The display shows 000.0000 in all channels when there has been a memory loss.
Location
. Do not use the scanner in high-moisture environments such as the kitchen or
bathroom.
. Avoid placing the unit in direct sunlight or near heating elements or vents.
. If the scanner receives strong interference or electrical noise, move it or its
antenna away
from the source of the noise. If possible, a higher elevation may provide better
reception.
Cleaning
. Disconnect the power to the unit before cleaning.
. Clean the outside of the scanner with a mild detergent.
To prevent scratches, do not use abrasive cleaners or solvents. Be careful not to
rub the
LCD window.
. Do not use excessive amounts of water.
Repairs
. Do not attempt any repair. The scanner contains no user serviceable parts.
Contact the
Radio Shack Customer Service Center or take it to a qualified repair technician.
Birdies
. All radios can receive birdies (undesired signals). If your scanner stops during
Scan mode
and no sound is heard, it may be receiving a birdie. Birdies are internally
generated
signals inherent in the electronics of the receiver.
Press L/O to lockout the channel, and then press HOLD/RESUME to resume
scanning.
Troubleshooting
If your 20-426 is not performing properly, try the following steps.
Problem Suggestion
1. Make sure you are scanning in Highway Mode.
2. Check antenna connections.
3. Conditions to activate the alarm are variable and depend upon the timing of
the dispatcher transmissions and proximity of patrol car to your vehicle. Also,
terrain and other factors may be involved.
4. Officer has the ability to turn off the mobile extender when off-duty, or when
going to court, etc., but will normally leave extender operating when on traffic
duty.
5. If you’re monitoring user-programmed frequencies, switch to one of the
preprogrammed frequency banks.
6. Check to see if MUTE and FLASH are both turned off.
7. Some priority frequencies may be locked out.
1. Check the connections at both ends of the AC Adapter.
2. Turn ON the wall switch of your room. You could be using an outlet
controlled by the wall switch.
3. Move the AC Adapter to another wall outlet.
1. Check the antenna connection.
2. Move the scanner.
3. You may be in a remote area which could require an optional multi-band
antenna. Check with your dealer or local electronics store.
1. Adjust squelch threshold - refer to page 15, "Setting the Squelch".
2. Check the antenna connection.
3. Check to see if many of the channels are Locked Out.
If so, the scanner has less chance of finding an active channel.
4. Review each channel's frequency to see if it is still stored in Memory and is
correct.
5. It's possible that none of the programmed frequencies are currently active.
1. Press PVT key again.
2. Adjust the SQL control.
3. Check to see if all channels are Locked Out.
1. Adjust squelch threshold - refer to page 15, "Setting the Squelch".
2. Check the antenna.
1. The priority system is checking for alarms. Use HOLD/RESUME to hold on
a frequency without checking priority channels every two seconds.
2. Select Priority off mode or Priority only mode.
Going by patrol cars and
not receiving alarms.
Scanner won't work.
Improper reception.
Scan won't stop.
Scan won't start.
Weather Scan won't
work.
Radio transmissions
(conversations) are
cutting in and out in
Highway mode.
If you experience difficulty while in TrunkTracker mode, try the following steps.
If you still cannot get satisfactory results while using your scanner or if you
want additional
information, please call or write the Radio Shack Parts and Service Division.
The address and
phone number is listed in the warranty at the end of this manual. If you would
like immediate
assistance, please call Customer Service at (800)297-1023.
If you have internet access, you can visit scanner.Radio Shack.com for
additional information.
Problem Suggestion
1. Missing the Data Frequency.
2. Change to a Type 1 Scanner setup.
Review Fleet Map Programming on page 45.
1. No IDs have been programmed.
2. The IDs you have stored are not active.
1. Adjust the squelch for Trunking mode - refer to page 29.
2. Missing the frequency used for the data channel.
Check your frequency list.
1. Change a Type 1 scanner setup.
Review Fleet Map Programming on page 44.
2. Try another Preset Fleet Map or Program your own Fleet Map.
3. Check to see that all of the system's frequencies have been entered.
1. May be a telephone interconnect call, which are intentionally blocked by
your scanner.
2. The ID on your display is not active.
1. Logical channel numbers (frequencies) for the system are not programmed
in the correct order. Check frequency resources and reprogram.
2. Not all frequencies for the system are programmed.
Check frequency resources.
Scanner won't track.
Scanner won't stop
during Scan List mode.
Scanner will not acquire
data channel.
Missing replies to
conversations.
Channel Activity
Indicators are flashing
but no sound is heard.
Scanner not tracking an
EDACS system properly.
Specifications
Certified in accordance with FCC Rules and Regulations Part 15, Subpart C, as
of date
of manufacture.
Channel: 1000
Banks: 10 (50 channels each)
Service Bands: 9 preprogrammed search bands
(including the NOAA and Canada Weather Service band)
Frequency Range: 25.0-28.0 MHz Petroleum Prod., CB Class D channels,
Business and Forest Products
28.0-30.0 MHz 10 Meter Amateur Band
30.0-50.0 MHz VHF Low Band
50.0-54.0 MHz 6 Meter Amateur Band
108-137 MHz Aircraft Band
137-144 MHz Military Land Mobile
144-148 MHz 2 Meter Amateur Band
148-174 MHz VHF High Band
400-420 MHz Federal Government
420-450 MHz 70 cm Amateur Band
450-470 MHz UHF Standard Band
470-512 MHz UHF T Band
806-956 MHz 800 Band
Operating Temperature: E0 °C to +60 °C (-4 °F to +140 °F)
Scan Rate: 100 channels per second (conventional mode)
Search Rate: 100 steps per second (Normal Search)
300 steps per second (Turbo Search)
Audio Output: Maximum 2.6W (2.2W normal @ 10% THD)
Internal Speaker: 8 ohms (57 mm outer diameter)
Power Requirements: AD140U AC Adapter (12V DC, 500mA)
Antenna: Telescopic Antenna (included)
Window Mount Antenna (included)
Antenna Jack: BNC type
External Jacks: External Speaker (EXT.SP.) (3.5 mm)
DC 12 V Power Jack, (center is positive)
Remote Control (REMOTE) Jack (DB-9)
Size: 7.06 in. (W) x 6.10 in. (D) x 2.44 in. (H)
176.5mm (W) x 152.5mm (D) x 50.8mm (H)
Weight: 1.1 kg (2 lbs 7 oz.)
Features and specifications are all subject to change without notice.
Limited Warranty
RadioShack Corporation
Fort Worth, Texas 76102
Cat. No. 20-426
09A04
Printed in China
UBZZ01331ZZ
NWR SAME
During weather scanning, press [HOLD] to go to hold mode.
Press F+[WX ALT] to enable NWR SAME alert.
When WX alert is on, “ALERT” LED is displayed ON. And the audio mute is
set on.
Press F+[WX ALT] to turn off NWR SAME alert.
If the scanner receives a SAME event code from the local weather service, it
sounds an alert and displays the description for any alert received.
And then audio mute is off. And “ALERT” LED is blinking.
The scanner display in channel area the following message;
Warning : “L1”
Watch : “L2”
Advisory : “L3”
Test : “TST”
WX alert (1050 Hz) : WXA
During an alert, press any key, then an alert stops. If you do not press any key,
then the scanner continues sounding the alert beep.
Although alert beep (warning beep, watch beep ,advisory beep) is sounded at
short intervals for 5 minutes, after that, the emergency beep will be sounded
beep at intervals of 10 sec.
Programming FIPS code
To specify a county, SAME uses a standard established by the US Census
bureau, called FIPS. The format of a FIPS code is:
DSSCCC
Where
D = area subdivision (0=entire area)
SS = State code (00=all states)
CCC = County code (000=all counties)
For example, the FIPS code for Tarrant County, Texas is:
048439 (48=Texas; 439=Tarrant County).
Some counties are further subdivided, in which cases, the first digit will be 0 for
all subdivisions in the county and each subdivision will be labeled 1-9.
To program your scanner to alert you when the weather service issues an alert,
you must set the scanner to the alert mode, and then leave the scanner
monitoring the weather service. You cannot scan and monitor for weather
alerts at the same time.
To limit alerts to a specific area, you must also program in the FIPS code(s) for
the area(s) you want to receive alerts for. The scanner can be set to either alert
for all areas, or only the areas you have programmed.
Programming FIPS
To program weather alert operation:
During weather scan hold mode, press F+[E], go to FIPS programming mode.
If the scanner is set to alert for all FIPS. “ALLFＩPS” is displayed.
If the scanner is set to alert only the area you have programmed, “F1” is
displayed.
Press [▲] or [▼] to move FIPS code “F1” to “F15”.
If FIPS code is no programmed, “------“ is displayed.
Input FIPS code by numeric key.
Press [./CLR] to cancel inputted FIPS code.
Press [E] to store FIPS code.
Press [0], [E] to clear FIPS code. “------“ is displayed.
If an invalid value has been inputted, FIPS code will be cleared.
To set to alert all FIPS, press [▲] or [▼] to move “ALLFＩPS”.
And press [E]. Then go to WX hold mode.
To set to alert only the area you have programmed, press [▲] or [▼] to move
“F1” to “F15”. And press [E]. Then go to WX hold with WX alert.
Press [HOLD] to exit this mode.
SIGNAL STALKER
Signal Stalker
Your scanner's Signal Stalker feature lets you set the
scanner so it detects then displays the frequency of
a nearby strong radio transmission. You can set the
scanner so Signal Stalker works "in the background"
while you are scanning other frequencies, turn off
normal scanning while Signal Stalker is working, or
turn off Signal Stalker and use the scanner normally.
You can set the scanner so it alerts you when Signal
Stalker finds a frequency. You can also set the
frequency band where you want the scanner to look
for transmissions.
Notes:
. Signal Stalker works well for locating the source
of strong local transmissions such as mobile
and handheld two-way radios in areas with no
other strong transmission sources. However, if
you are in an area with many transmission
sources (such as pager radio transmitters, multiuse
radio towers, traffic control devices, etc.), Signal Stalker might not find the
transmission
you are searching for, or it might find a
transmission other than the one you are
searching for. You can screen unwanted
transmissions by pressing FUNC + L/O to lock
them out. See “Locking Out Frequencies” on
Page 49 for more information.
. Signal Stalker cannot detect satellite dishes or
any transmitter with a frequency above or below
the frequency ranges listed under “Setting the
Signal Stalker Options” on Page 32.
. Signal Stalker works better with some types of
transmissions than others. It might not correctly
display frequency information for transmitters
using a highly directive antenna (such as an
amateur radio beam antenna), if there are many
transmitters operating at the same time in the
same area, or if the transmitter is a broadcast
television station.
Setting the Signal Stalker Options
Press FUNC then press and hold for 2
seconds. One of the following signal stalker
options appears.
S-S.bnd: Lets you select the signal stalker band.
S-S.ALt: Lets you select the signal stalker alert
settings.
“S-S.PS”
: Setting of pager screen
Repeatedly press or to select the option
you want, then press E.
If you selected S-S.bnd, one of the following
band names appears.
bnd Lo: VHF Low Band (25.0000 - 54.0000 MHz)
bnd Air: AIR Band (108.0000 - 136.9875 MHz)
bnd Hi: VHF High Band (137.0000 - 174.0000
MHz)
bnd UHF: UHF Band (406.0000 - 512.0000 MHz)
bnd 800: 800MHz Band (806.0000 - 956.0000 MHz)
If you selected S-S.Alt, skip to Step .
Repeatedly press or until the band you
want to search appears, then press E to select it.
Otherwise, press ./CLR if you do not want to
select it.
The scanner displays the following options.
Lo On or Lo OFF
Air On or Air OFF
Hi On or Hi OFF
UHF On or UHF OFF
800 On or 800 OFF
Repeatedly press or until the option you
want appears, then press E to select it.
Otherwise, press ./CLR if you do not want to
select it. Then skip to Step .
Press E while S-S.Alt appears. One of the
following alert options appears.
ALt bEEP: The scanner beeps when a signal
stalker signal is detected.
ALt Light: The scanner flashes the display
backlight when a signal stalker signal is detected.
ALt bP-Lt: The scanner flashes the display
backlight and beeps when a signal stalker signal
is detected.
ALt OFF: The scanner does not provide any alert
when a signal stalker signal is detected.
Repeatedly press or until the option you
want appears, then press E to select it.
Otherwise, press ./CLR if you do not want to
select it.
When you select the option, press ./CLR to exit
the option mode. Otherwise, to continue normal
scanning, repeatedly press FUNC until
disappears then press SCAN.
Using Signal Stalker
To turn on Signal Stalker, turn SQUELCH fully
clockwise, then press FUNC + once except in
Weather service, band select, state select, or program mode.
appears. Every 2 seconds, the scanner searches
for frequencies in the range you specified in “Setting
the Signal Stalker Options” on Page 32.
Note: To continue scanning normally while Signal
Stalker is working, simply press SCAN.
When the scanner finds a frequency, it sounds the
alert you specified in “Setting the Signal Stalker
Options” on Page 32, and Found flashes. Press any
key to confirm the displayed frequency. Press SCAN
to resume scanning. Or press or while the
frequency and appear to select the band where
you are searching.
To turn on Signal Stalker and turn off normal
scanning, press FUNC + twice. and - - - - - flash.
To turn off Signal Stalker and turn on normal
scanning, press FUNC + three times.
disappears.
SKYWARN
Skywarn
The Skywarn function lets you jump directly to the
last channel in memory (Channel 200) from any
mode by pressing FUNC + . The scanner goes
into scan hold mode and starts receiving
transmissions in the last channel. If no frequency is
programmed in the last channel, No Prg appears
and the scanner sounds an error tone.
About Skywarn
Skywarn is an organized group of trained weather
observers. A Skywarn group exists in virtually every
US county with a significant population. During
inclement weather, reports made by Skywarn
observers include information about:
. pea-sized and larger hail
. wind and wind gusts 40 MPH and greater
. heavy rainfall
. lightning (cloud-to-cloud and especially
cloud-to-ground)
. wall clouds seen in severe thunderstorms
(which spawn tornadoes)
. severe lowering of a wall cloud
. turbulence in a wall cloud
. funnel clouds
. tornadoes
. high water areas
. downed power lines
. other emergency conditions that affect life or
property
Listening to Skywarn broadcasts makes it easy to
quickly find out about and prepare for inclement
weather conditions in your immediate area, even
before your local NOAA weather broadcast and
local TV or radio station can announce them.
Enter the local Skywarn frequency for your area into
Channel 200 on your scanner, then listen to Skywarn
first when severe weather threatens.
Listen to NOAA: for weather alerts and warnings,
watch box notices, and weather forecasts
Listen to Skywarn: to hear trained observers in your
vicinity call in official reports to a "net control"
station who relays those reports to NOAA and other
emergency agencies.
If you tune to a Skywarn frequency when the
Skywarn net is not active, you may hear nothing or
you may hear amateur radio operators talking on a
local repeater system.
Most importantly, you get Skywarn reports directly
from trained observers - that means you get them
several minutes before they can be relayed for
broadcast by NOAA and as much as 5 or 10 minutes
sooner than you will hear them on local TV or radio!
Those few minutes can be worth a lot when it
comes to deciding if your family needs to take cover.
PC INTERFACE
Wired Programming
You can transfer programming data to your scanner
using your PC and an optional interface cable
and software (available at your local RadioShack or
www.radioshack.com).
Note: If the scanner receives no data from the PC
for more than 20 seconds, T-Err appears and wired
programming stops.
Make sure your scanner is turned off.
Connect the interface cable to your computer
then connect the other end of the cable to PC/IF
on the side of the scanner.
Install the software to your computer and run the
program.
To set up the program, click on Tools, select
Configuration, and select PRO-83 (if necessary).
Turn on the scanner. The scanner automatically
goes into the wired programming mode. PGM
and WirEd appear. Then send the data from the
PC.
Data frame numbers being received appear.
When the scanner has successfully received all
data, End appears. If the scanner received an
error while receiving data, End, d-Err, and its
frame number appear. If the scanner received a
communication error while receiving data, C-Err
indicates the packet number where the error
occurred. If the scanner received a checksum
error while receiving data, S-Err indicates the
packet number where the error occurred. If the
scanner received a length field error while
receiving data, L-Err indicates the packet number
where the error occurred.
150 CH PREPROGRAMMED FREQUENCY
Follow these steps to restore the 150
preprogrammed frequencies stored in the
scanner.
The FCC Wants You to Know
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio
communications.
However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Consult your local RadioShack store or an experienced radio/TV
technician for help.
• If you cannot eliminate the interference, the FCC requires that you stop
using your scanner.
Changes or modifications not expressly approved by RadioShack may
cause interference and void the user’s authority to operate the equipment.
You must use shielded interface cables with this equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.

---

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.5
Linearized                      : No
Page Count                      : 66
Page Mode                       : UseNone
XMP Toolkit                     : XMP toolkit 2.9.1-13, framework 1.6
About                           : uuid:e5914af7-5537-40ad-b999-07705de5efa5
Producer                        : Acrobat Distiller 5.0 (Windows)
Create Date                     : 2004:11:01 15:32:24+09:00
Modify Date                     : 2004:11:05 10:55:46-05:00
Metadata Date                   : 2004:11:05 10:55:46-05:00
Creator Tool                    : Word 用 Acrobat PDFMaker 5.0
Document ID                     : uuid:448b6c1a-ce0c-4fec-8638-ede3e2147a49
Format                          : application/pdf
Creator                         : eng
Title                           : Precautions
Tagged PDF                      : No
Author                          : eng

EXIF Metadata provided by EXIF.tools