RadioShack Pro 2051 Trunk Track Scanner Owners Manual

							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, th en 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. 
F 
 
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 KnowThis 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.