RadioShack Pro 2051 Trunk Track Scanner Owners Manual

							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 Shacks AFS forma t 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 R epeater number and ID make up the Talk 
Group ID. 
. 
. 
. 
. 
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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 wh ile entering an ID, press 0 and  E successively, and 
start over. 
Receiving Trunked Systems 
When you have properly programmed all t he 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 m anually specify a talkgroup with DIRECT 
ENTRY in ID HOLD. 
✎ ID LOCKOUT works with Search and Scan  to exclude talkgroups that you dont 
want 
to hear. 
✎  ID DELAY works with each talkgroup to be delayed when the communication \
ends. 
When receiving EDACS systems, remember  that Radio Shacks AFS talkgroups 
give you powerful 
flexibility. In a few key presses, you c an 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 c an 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 havent 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 tu rns 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 acti ve 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 frequenci es 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 gui de to understand the formats. 
The display indicates the bank and the ty pe of trunked system you are monitoring. 
While 
monitoring on ID, press the   key, and the scanner will che ck if any other IDs are 
active. 
Regardless of the system, you wont 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, y ou 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 
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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 s\
econds. 
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 spec ific 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. 
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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 encru st 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 freq\
uency 
entered 
causes the first skipped freqnency to unlock. 
Note: If you Lockout an ID in Search mode, it is also locked out in Scan Lis\
t mode. 
Conversely, if you Lockout an ID while in Sc an 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 lo ckout 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 t he 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 se ction 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. 
.  
						

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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 lo cation 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 w hen Priority IDs are locked out. 
Moving between Scan List Memories 
There are a number of ways to step and move through your Scan List memor\
ies: 
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 exam ple to move to Scan List 4, memory position 
10, 
press:  HOLD/RESUME, 4 , 0, HOLD/RESUME 
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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 sc an conventional frequencies at the same 
time. 
✎  You can program conventional frequencie s 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 (re member, 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 convent ional 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 y our 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 (nonlocked- 
out) 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 t he 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. 
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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 sc an conventional frequencies at the same 
time. 
✎  You can program conventional frequencie s 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 (re member, only trunking frequencies are 
programmed in Trunk mode). 
To scan a mix of trunking and conventiona l 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 convent ional 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 y our 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 (nonlocked- 
out) 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 t he 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 EDAC S(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 systems 
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 talk group 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 logica l 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. Th e 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 Sh eriff is agency 01. The city