RadioShack Pro 2051 Trunk Track Scanner Owners Manual

							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 al l the front panel keys on the radio 
remain operational 
in Remote mode. 
For information on purchasing 20-426 Scanner software to program and con\
trol 
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 : 9600/19200/38 400/57600 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 st raight 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 conn ectors, 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 con\
trol 
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 : 9600/19200/38 400/57600 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 st raight 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 conn ectors, 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 al l the front panel keys on the radio 
remain operational  
						

							in Remote mode. 
For information on purchasing 20-426 Scanner software to program and con\
trol 
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 : 9600/19200/38 400/57600 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 st raight 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 conn ectors, 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 freq uencies 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 interferen ce 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, an d 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-programme d 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 whic h 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 channels frequency to see  if it is still stored in Memory and is 
correct. 
5. Its possible that none of the pr ogrammed 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 fo r 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 wont work. 
Improper reception. 
Scan wont stop. 
Scan wont start. 
Weather Scan wont 
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 Cust omer 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 syst ems 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 wont track.  
						

							Scanner wont 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; 
Wa r n i n g  :  “ L 1 ”  
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 st andard 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 wi\
ll 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 a\
lert, 
you must set the scanner to the alert mode, and then leave the scanner 
monitoring the weather service.  Yo u 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. “ALLF ‚hPS” is displayed. 
If the scanner is set to alert only th e area you have programmed, “F1” is 
displayed. 
Press  []  or  []  to move FIPS code “F1” to “F15”. 
If FIPS code is no progra mmed, “------“ 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 inputte d, FIPS code will be cleared.  
						

							To set to alert all FIPS, press []  or  []  to move “ALLF ‚hPS”. 
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 scanners 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 othe r 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, et c.), 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 bette r with some types of