RadioShack Pro 2051 Trunk Track Scanner Owners Manual

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Programming Frequencies into Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 
Deleting a Stored Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 
Duplicate Frequency Alert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 
Memory Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

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...

different from 
scanning because you are searching for frequencies that have not been 
programmed into 
your Scanner’s channels. The scanner aut omatically chooses between two speeds 
while 
searching. During search mode the sc anner 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...

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 ac tually follows the users of a trunked radio system. Once 
you 
know a talkgroups ID, you w on’t miss any of the action. 
If youre a new scanner enthusiast, you ma y want to read the first part of this 
manual and 
use your scanner in conventional m ode before you begin trunk tracking. 
Understanding 
scanning fundamentals and its...

frequencies to 
maintain faster scanning cycles or for storing all the frequencies of a trunked 
system. 
•  25 MHz-956 MHz  – Indicates the range of frequencie s 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 activi ty on your most important channel(s) while 
monitoring other...

(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 
8 
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) 
•...

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. Fo r frequencies higher than 406 MHz, 
shortening 
the antenna may improve the reception. 
4. Use the desktop stand for a bet ter viewing and operating angle. 
Helpful Hints 
• If strong interference or electrical noise  is...

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 connecti ons to determine which battery terminal 
(positive or...

mm). 
Caution: Be sure to avoid obstructions behind the mounting surface. 
Follow these steps to mount t he 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 bracke t to the mounting location 
using the supplied screws and lock washers. 
4. Attach the scanner to the mounting bracket...