Radio Shack Scanner Pro 433 Users Manual
PRO-433_PM_EN PRO-433_PM_EN
2000433_PM_EN 2000433_PM_EN
PRO-433 to the manual f36de4a2-d18d-4f30-b171-4f1a6ce45b5d
2015-01-21
: Radio-Shack Radio-Shack-Scanner-Pro-433-Users-Manual-352561 radio-shack-scanner-pro-433-users-manual-352561 radio-shack pdf
Open the PDF directly: View PDF 
.
Page Count: 40

Please read this user’s guide before installing,
setting up and using your new scanner.
www.radioshack.com
20-433
PRO-433 1,000 ch Trunking 
Desktop/Mobile Scanner
Scanner AC adapter
DC cable with fuse  Antenna
DIN sleeve  Removal keys (2)
Mounting bracket  Knobs (2)
Lock washers (2)  Screws (2)
Rubber feet (4)   User’s guide
Preprogrammed frequency sheet 
Thank you for purchasing your PRO-433 1,000 Channel Trunking 
Desktop/Mobile Scanner from RadioShack. Your scanner is one of 
a new generation of scanners designed to track Motorola® Type I, 
Type II, hybrid analog, and many other systems.
Quick Start 
p. 4- 10

2
Contents
quick start  4
step 1: installing your scanner   4
step 2: power your scanner   5
step 3: connect your scanner  6
step 4: setting up your scanner  8
step 5: monitoring and scanning  10
the basics  11
your scanner’s controls  12
your scanner’s display  13
replacing the fuse  15
beyond the basics  16
channel-storage banks  16
priority channels  16
chain search  17
service bank search  18
weather search and alert  18
FIPS codes  19
Skywarn 20
Signal Stalker I  21
data skip  22
keytones 23
delay 23
memory lock  23
trunking operations  24
programming trunked frequencies  24
talk group ID  25
AFS Format  28
talk group ID search range (EDACS)  28
Status Bit (S-Bit) Ignore  29
trunk search and scan  30

3
Contents
type I and hybrid trunked systems  30
programming base and offset frequencies  33
Motorola disconnect tone detect function  34
special features  35
PC programming  35
scanner cloning  35
care 37
troubleshooting 37
resetting the scanner  38
service and repair  38
specifi cations  39
RF emissions information  40
limited one-year warranty  40

4
Quick Start
quick start
step 1: installing your scanner 
You can mount your scanner as a base station or in your vehicle. If 
you are unsure how to install your scanner in your vehicle, consult 
your automobile manufacturer, dealer, or a qualifi ed installer. 
base station
Attach the four protective rubber feet to the mounting bracket 
when you use the scanner as a base station on a fl at surface such 
as a desk, shelf, or table. Because the speaker is on the bottom 
of the scanner, you can use the mounting bracket to elevate your 
scanner off the surface for better sound. 
vehicle mounting
To mount your scanner under or over the dashboard, use the 
mounting bracket. Before installing, confi rm that your scanner 
fi ts in the desired mounting area and you have all the necessary 
materials to complete the task. 
IMPORTANT: AVOID AIRBAG DEPLOYMENT ZONES. This can 
prevent the airbag from performing properly and result in injury.
1.  Use the supplied mounting bracket as a template to mark 
positions for the two mounting screws.
2.  At the marked positions, drill holes slightly smaller than the 
screws. When drilling holes, be sure to avoid obstructions and 
wires behind the mounting surface. 
3.  Attach the mounting bracket to the surface using the supplied 
screws.
4.  Slide the scanner into the bracket, aligning the scanner’s holes 
with the holes in the bracket, and then screw the mounting 
knobs into the scanner.
4

5
Quick Start
Your scanner requires a 2 x 7-1/8 x 5-5/16 inch (50 x 180 x 135 
mm) mounting area. Allow an additional 2-3/8 inch (60 mm) space 
behind the scanner for connectors and wires.
1.  Remove the four rear screws that secure the outer metal case 
and pull off the case with care.
2.  Insert the DIN sleeve into the opening in your dashboard, lip 
facing out.
3.  Push out the top and bottom tabs to hold the sleeve fi rmly in 
place.
4.  Slowly slide the scanner into the sleeve until it locks in place.
•  When mounting in your dashboard, you will need to 
connect an external antenna and an external speaker.
•  To remove your scanner from the DIN sleeve, insert the 
two removal keys straight into the scanner’s front panel 
and pull the scanner out.
step 2: power your scanner 
You can power your scanner from a wall outlet, through your 
vehicle’s ignition, or from your vehicle’s cigarette lighter or power 
port. You must use a Class 2 power source that supplies 12V DC 
and delivers at least 500mA. Its center tip must be set to positive 
and its plug must fi t the scanner’s DC 12V jack. Using an adapter 
that does not meet these specifi cations could damage the scanner 
or the adapter.
wall outlet 
To prevent electric shock, 
do not use the AC adapter’s 
polarized plug with an 
extension cord, receptacle, 
or other outlet unless you 
can fully insert the blades.
1.  Connect the tip of the supplied AC adapter to the DC 12V jack.
2.  Plug the AC adapter into your wall outlet.
5
DC 12V
Power source connection.
NOTES

6
Quick Start
vehicle cigarette lighter or power port
To power your scanner from your vehicle’s 12V power source, 
use a 12V DC cigarette-lighter adapter (not supplied, available at 
RadioShack).
If you use a cigarette-lighter adapter, you might hear some 
electrical interference from your engine while scanning. 
This is normal.
vehicle ignition (negative ground only)
If you are not experienced in connecting accessories to 
the vehicle fuse box, use a certifi ed installer.
1.  Disconnect the cable from the negative (-) terminal of your 
vehicle’s battery.
2.  Ground the black wire of the supplied DC power cord to your 
vehicle’s chassis. The grounding screw must make complete 
contact with the metal frame of your vehicle.
3.  Connect the red wire of the supplied DC power cord to a 
voltage source that turns on and off with the ignition switch, 
such as a spare accessory terminal in your vehicle’s fuse box.
4.  Insert the adapter’s barrel plug into the scanner’s DC 12V jack.
5.  Reconnect the cable to the negative (-) terminal of your 
vehicle’s battery.
step 3: connect your scanner
ANT
Antenna connection.
EXT SP
External speaker connection.
NOTE
NOTE

7
Quick Start
antenna
Expand the antenna according to the 
frequencies you want to montitor:
Frequency ..................................... Antenna Length
25-174 MHz .....................Extend fully (4 segments)
400-512 MHz ................... Extend half (2 segments)
806-1300 MHz ................Collapse fully (1 segment)
The scanner’s ANT jack supports a variety of 
antennae (available at RadioShack). 
•  An external antenna is optional if 
you use your scanner as a base 
station. If you mount your scanner 
in your vehicle, you will need to 
connect an external antenna. 
•  The antenna should be as high 
as possible and vertical for best 
performance.
•  Keep the antenna and cable as far as possible from 
sources of electrical noise, such as appliances or other 
radios.
Always use 50-ohm coaxial cable, such as RG-58 or RG-8, to 
connect an outdoor antenna. For lengths over 50 feet, use RG-8 
low-loss dielectric coaxial cable. You also may need a BNC adapter 
(not supplied). 
external speaker
To use an external speaker (available at your local RadioShack 
store), plug the speaker’s 1/8 inch (3.5 mm) plug into the scanner’s 
EXT SP jack.
Connecting an external speaker mutes the scanner’s 
internal speaker.
ANT
Match the 
antenna 
connector 
arrow to 
the ANT 
jack’s upper 
projection.
CAUTION: Use extreme caution when installing or removing 
an outdoor antenna. If the antenna starts to fall, let it go! If the 
antenna touches a power line, touching the antenna, mast, 
cable, or guy wires can cause electrocution and death. Call the 
power company to remove the antenna. Do not attempt to do so 
yourself.
NOTES
NOTE

8
Quick Start
step 4: setting up your scanner
turning on your scanner
To turn on your scanner, turn the VOLUME knob clockwise 
until it clicks. To set the squelch, turn the SQUELCH knob fully 
counterclockwise, then rotate it clockwise until the hissing sound 
stops.
storing frequencies in channels
Your scanner comes with 150 preprogrammed frequencies. You 
can manually store frequencies using a frequency guide such as 
the “RadioShack Police Call Guide including Fire and Emergency 
Services, and Offi cial Aeronautical Frequency Directory.”
1. Press E/PGM. PGM appears in the display.
2  Enter the channel number where you want to store a frequency.
3. Press SCAN/MANUAL.
4.  Enter the frequency including the decimal point.
5. Press E/PGM to store the frequency. The scanner automatically 
rounds the entered number to the nearest valid frequency. For 
example, 151.473 (MHz) becomes 151.475. 
If you entered a frequency that is already saved on 
another channel, the scanner beeps and displays the 
channel. Press . /CLR /DELAY to exit, or press E/PGM to 
store the frequency on both channels.
copying / moving frequencies
To copy or move a frequency, complete the following steps:
1. Press  or   to select the channel that contains the frequency, 
and press E/PGM.
2.  Press and hold E/PGM. The scanner copy/move menu appears.
3. Press  or   to select Copy or Move, then press E/PGM.
NOTE

9
Quick Start
4.  Select the target bank. The smallest empty channel number 
fl ashes over the frequency.
5. Press  or   to access the target channel.
6. Press E/PGM. If there is no empty channel, the scanner 
automatically selects the fi rst channel of the bank.
To cancel the copy or move, press . /CLR /DELAY. 
searching for frequencies
You can search for frequencies up or down using direct search. 
1.  Press and hold SRCH. SRCH appears in the display.
2.  (Optional) To set a starting frequency, press HOLD and enter 
the frequency. 
3. Press  or   to begin searching up or down the frequencies.
4.  (Optional) To avoid unwanted frequencies, you can skip up to 
200 specifi ed frequencies during a search. To skip a frequency, 
press L/O when the scanner fi nds the frequency.
•  You cannot skip frequencies during a weather service 
search.
•  If you skip all frequencies within the search range, the 
scanner cannot search.
•  If you try to skip more than 200 frequencies, the 
scanner will stop skipping the earliest skipped 
frequencies.
 To clear a skipped frequency, complete the following steps:
1. Press HOLD/RESUME to stop the search.
2.  Select the frequency. L/O appears.
3. Press L/O. L/O disappears.
4.  (Optional) To clear all the skipped frequencies, press HOLD/
RESUME, then hold down L/O until the scanner beeps twice.
NOTES

10
Quick Start
step 5: monitoring and scanning
monitoring
To monitor a channel, press SCAN/MANUAL while the scanner is 
pausing on the channel, or stop the scanning by pressing SCAN/
MANUAL, enter the channel number, and press SCAN/MANUAL.
scanning
To scan, press SCAN/MANUAL. When the scanner fi nds a 
transmission, it monitors the transmission until it ends.
•  If you have not stored frequencies into any channels, 
the scanner cannot scan.
•  If the scanner picks up weak transmissions, turn 
SQUELCH clockwise to decrease the scanner’s 
sensitivity to these signals. To listen to a weak or 
distant station, turn SQUELCH counterclockwise.
Press SCAN/MANUAL to stop scanning, or press HOLD/RESUME 
to pause the scan without losing your position.
earphones / headphones
For private listening, you can plug earphones or headphones into 
your scanner’s headphone jack. Do not use headphones with your 
scanner when operating a motor vehicle in or near traffi c. Doing so 
can create a traffi c hazard and could be illegal in some areas. Some 
headphones let you hear some outside sounds when listening at 
normal volume levels, but they still can present a traffi c hazard. 
To protect your hearing, follow these guidelines for headphones.
•  Do not listen at extremely high volume levels. Extended high-
volume listening can lead to permanent hearing loss.
•  Set the volume to the lowest setting before you begin listening, 
then adjust the volume to a comfortable level.
•  After you set the volume, do not increase it. Over time, your 
ears adapt to the volume level, so a volume level that does not 
cause discomfort might still damage your hearing.
NOTES

11
The Basics
the basics
A frequency is the tuning location of a station. A channel is a 
programmable memory location for storing frequencies that 
you can scan for activity. Channels are grouped into 10 channel-
storage banks, each of which contains 100-channels. Service banks 
are preset channel-storage banks of frequencies used by HAM 
operators, marine, aircraft, and police (fi re/emergency) services. 
For example, many amateur radio frequencies are located in the 
HAM service bank. 
Your scanner provides many features that help you locate, 
monitor, and organize useful transmissions in your area, including 
frequencies used by police and fi re departments, ambulance 
services, government agencies, private companies, amateur 
radio services, military operations, pager services, and wireline 
(telephone and telegraph) service providers. 
This scanner is designed to prevent reception of illegal 
transmissions, in compliance with laws that require that scanners 
be manufactured to not be easily modifi able to pick up those 
transmissions. Do not open your scanner’s case to make any 
modifi cations that could allow it to pick up transmissions that it is 
not legal to listen to. Doing so could subject you to legal penalties.
It is legal to listen to almost every transmission your scanner can 
receive. However, there are some transmissions you should never 
intentionally listen to. These include:
•  telephone conversations (cellular, cordless, or other private 
means of telephone signal transmission)
• pager transmissions
•  any scrambled or encrypted transmissions
According to the Electronic Communications Privacy Act (ECPA), 
as amended, you are subject to fi nes and possible imprisonment 
for intentionally listening to, using, or divulging the contents of 
such a transmission unless you have the consent of a party to the 
communication (unless such activity is otherwise illegal).
We encourage responsible, legal scanner use.

12
The Basics
your scanner’s controls
SCAN/MANUAL
Starts and stops channel scans, or lets you 
directly enter a frequency or channel number.
SRCH
Searches for frequencies, or active talk group IDs.
SVC
Starts a service bank search.
TRUNK
Accesses trunk tracking and stores trunked frequencies.
WX / 
Controls weather searches and activates the Skywarn function.
MENU
Accesses the scanner menu, which appears in the display.
PRI
Activates and sets the priority features.
L/O
Locks out selected channels, skips specifi ed talk group IDs and 
frequencies during a search.
Accesses the Signal Stalker I function.
SQUELCH
Adjusts the squelch. 
VOLUME
Turns on the scanner and 
adjusts the volume.
PC/IF
PC interface cable connection.
Headphone connection.

13
The Basics
Number keys
Enter a channel, a frequency, or an ID number.
HAM
Selects the ham band when in service mode.
MRN
Selects the marine band when in service mode.
AIR
Selects the air band when in service mode.
POL
Selects the police band when in service mode.
ALERT
Activates the NWR-SAME weather alert.
CLR /DELAY
Clears error messages, or accesses the delay feature.
E/PGM
Stores frequencies into channels, and programs the trunking 
frequency, fl eet map, and ID memories.
DM/M-LOCK
Lets you set the display brightness, or locks the 
memory. To set the brightness of the display 
backlight select BRIGHT, DIMMER or OFF.
 or 
Searches or scans up and down, or selects options.
HOLD /RESUME
Stops and resumes searching.
your scanner’s display
BANK
Indicates active channel-storage banks 
(1–10) or talk group ID lists (trunking).
TRUNK
Appears during trunking operations.
P
Indicates priority channels and talk 
groups.

14
The Basics
DATA
Appears when the data skip function is active, and in the trunking 
mode when the dis connect tone detect function is off.
Appears when Signal Stalker I is active.
SCAN
Appears during channel scan.
LIST
Appears with numbers (1–5) during trunking. A bar indicates which 
ID scan list banks are turned on for scanning.
SRCH
Appears during chain, direct, and ID searches.
SVC
Appears during Service Search mode.
PRI
Appears when the priority feature is turned on.
HOLD
Appears during chain, direct, service, and ID searches, and ID 
monitor holds, and fl ashes while the scanner is temporarily 
monitoring a programmed ID.
DLY
Appears when you select a Delay option.
L/O
Appears when you manually select a locked out channel and talk 
group.
M-LOCK
Appears when you select a memory lock option.
Appears when you select a Skywarn channel.
PGM
Appears while you store a frequency into a channel, enter a 
frequency range during a chain search, or program trunking 
frequencies, fl eet maps, or ID memories while trunking.

15
The Basics
 or 
Indicates the search direction during a chain, direct, or service 
search, and normal and weather scan.
ALERT
Appears when the weather alert is turned on, or fl ashes when the 
scanner detects an alert coded signal.
M, E or L
Indicates the trunking system: Motorola (M), EDACS (E), or LTR (L).
CH
Indicates the current channel.
replacing the fuse
To replace your scanner’s fuse, turn off the scanner and your 
vehicle’s ignition, then replace the fuse only with another fuse of 
the same type and rating (1-amp, fast-acting glass fuse).

16
Beyond the Basics
beyond the basics
channel-storage banks
The scanner displays the channel-storage bank number while 
scanning a channel. You can turn off a bank by pressing the bank’s 
number, but one bank must always be active. To increase scanning 
speed, you can lock out channels with continuous transmission, 
such as weather channels or birdies. Birdies are internally 
generated signals inherent in the electronics of the receiver. If your 
scanner stops during scan mode and no sound is heard, it may be 
receiving a birdie. 
To lock out a channel, manually select the channel, then press L/O. 
L/O appears in the display. To unlock a channel, press L/O when the 
scanner stops on the channel or manually select the channel and 
press L/O. L/O disappears. To unlock all channels in the banks that 
are turned on, press HOLD/RESUME to stop scanning, then hold 
down L/O until the scanner beeps twice. 
You can manually select locked-out channels.
priority channels
You can set one priority channel for each bank. The scanner checks 
the current priority channel every 2 seconds. To activate the priority 
feature, press PRI. PRI appears in the display. To turn off the priority 
feature, press PRI again.
If you have locked out all priority channels, CH Loc Out 
appears when you activate the priority feature.
Each bank’s fi rst channel is the priority channel by default. To 
change a priority channel, complete the following steps:
1. Press E/PGM. 
2.  Enter the number for the priority channel, and press PRI. P 
appears to the right of the selected channel number. Press PRI 
to review all priority channels. 
NOTE
NOTE

17
Beyond the Basics
chain search
Chain search lets you search through preset frequency ranges and 
store found frequencies. You can also modify each range.
At least one bank must be active. If you disable all the 
banks, the error tone beeps.
1. Press SRCH. SRCH appears. 
2.  (Optional) Press 0 – 9 to enable / disable search banks:
Bank No.   Frequency (MHz)  Step (kHz)
1 ...................................................29.0000 – 54.0000 ..............................5
2  ..................................................137.0000 – 147.9950 ..........................5
3 ...................................................179.7500 – 215.7500 ....................6000
4 ...................................................216.0000 – 224.9950 ..........................5
5 ...................................................225.0000 – 399.9875 .....................12.5
6 ...................................................400.0000 – 449.99375 ...................6.25
7 ...................................................450.0000 – 469.99375 ...................6.25
8 ...................................................470.0000 – 512.0000 .....................6.25
9 ...................................................806.0000 – 956.0000 .....................12.5
10 .................................................1240.0000 – 1300.0000 .................12.5
3. Press  or   to search up or down.
4.  When the scan pauses, press HOLD/RESUME. To step through 
the frequencies, press   or  . 
5.  To save a frequency, press E/PGM. The bank numbers fl ash.
6.  Enter the target bank number. The smallest empty channel 
number fl ashes over the frequency.
7. Press  or   to select to target channel.
8. Press E/PGM.
To program a search range, complete the following steps:
1.  During a chain search, press and hold E/PGM. The lowest and 
the highest frequencies of Bank 1 appear alternately.
2.  Press the number of the bank you want to change. The lower 
frequency range appears.
NOTE

18
Beyond the Basics
3.  Enter the lower limit frequency, and then press E/PGM.
4. Press  or   to change to the upper limit frequency.
5.  Enter the upper limit frequency, and then press E/PGM.
6. When you fi nish programming frequency ranges, press SRCH.
service bank search
You can search preprogrammed frequencies allocated to HAM, 
marine, aircraft, or police (fi re/emergency) transmissions. To use 
service bank search, complete the following steps:
1. Press SVC. The most recently used service symbol appears 
and the scanner starts searching. 
2.  To select a different service bank, press 1/HAM, 2/MRN, 3/AIR 
or 4/POL. The selected service symbol appears. 
3. Press  or   to search up or down.
It can take several minutes to search all the service 
frequencies.
weather search and alert
The National Oceanic and Aerospace Administration (NOAA) 
broadcasts Specifi c Area Message Encoding (SAME) alerts with 
digitally-encoded data, including the alert severity. This scanner 
detects SAME signals and displays the alert severity.
You cannot scan frequencies and monitor for weather alerts at the 
same time. To start weather scan, complete the following steps:
1. Press WX. WX appears in the display. 
2. Press  or   to change the search direction.
3.  To stop the search, press HOLD/RESUME. HOLD appears.
4.  To set the weather alert, press 6/ALERT. ALERT appears. This 
mutes the audio until the scanner receives a SAME alert. 
NOTE

19
Beyond the Basics
When the scanner receives a SAME-coded signal, ALERT fl ashes 
one of the following codes to indicate the alert level:
L1... ................................................................................................. Warning
L2.. ......................................................................................................Watch
L3... ................................................................................................ Advisory
WXA ...................................................................... Weather Alert (1050 Hz)
To activate tones for the alert levels, press WX to activate the 
weather service, then hold down ALERT for about 1 second. Each 
alert code appears as its tone sounds. Press any key to end the test 
sequence.
FIPS codes
To limit weather alerts to specifi c areas, you can program FIPS 
codes for those areas. The scanner can be set to either, alert for all 
areas, or only the areas you have programmed.
SAME uses a standard established by the US Census bureau, called 
FIPS. The format of a FIPS code is PSSCCC, where:
  P ......................................................... 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)
1.  During weather scan, press HOLD. 
2. Press E/PGM. The scanner enters FIPS programming mode. 
If the scanner is set to alert for all FIPS, ALLFIPS appears on 
the display. If the scanner is set to alert only the area you have 
programmed, F1 appears.
3.  To set the scanner to scan all FIPS codes, press   or   to move 
ALLFIPS. Then press E/PGM. Then go to WX hold mode.
4.  To program a FIPS code, press   or   to select a displayed FIPS 
code (F1 to F15), and enter the FIPS code using the numbered 
keypad.
5. Press E/PGM to store the FIPS code. If an invalid value has 
been inputted, the FIPS code is cleared. 

20
Beyond the Basics
Skywarn
Skywarn jumps directly to the last channel in memory from any 
mode. The scanner pauses any active scans and starts receiving 
transmissions in the last channel. If no frequency is programmed in 
the last channel, No Prog appears and the scanner sounds an error 
tone.
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 (which can 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 
Skywarn broadcasts can help you 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 
1000 on your scanner. Then, listen to Skywarn fi rst 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 offi cial reports to a 
net control station which 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.
NOTE

21
Beyond the Basics
Signal Stalker I
Signal Stalker I searches for frequencies in a specifi ed range. 
This works well for locating 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, traffi c control devices, etc.), Signal Stalker I may not 
correctly display.
Signal Stalker I can work in the background while scanning other 
frequencies and automatically saves strong signals to one of 10 
log channels, located after Channel 1000. You can scan the log 
channels along with the normal channels, or you can manually 
access log channels as Channel 1001, Channel 1002, ... Channel 
1010. “-1-”, “-2-”, ... “-10-” appear as channel numbers.
•  Turn off the data skip feature if it is on.
•   You cannot program frequencies in the log channels. 
The frequencies in the log channels are deleted when 
you turn off the scanner. 
To turn on Signal Stalker I, turn SQUELCH fully clockwise, then 
press the Signal Stalker I button  . The Signal Stalker I icon 
appears in the display. 
To turn off Signal Stalker I, press the Signal Stalker I button  .
To set Signal Stalker I settings, complete the following steps:
1. Press MENU. 
2. Press  or   to select SIG-St., and press E/PGM. The Signal 
Stalker I options appear.
3. Repeatedly press  or   to select the option you want, then 
press E/PGM.
S-S.bnd ................................................................................................Band
One of the following band names appears: 29-54, 108-137, 
137-174, 179-320, 320-512, 806-956. Repeatedly press   or 
 to select a band, then press E/PGM.
NOTES

22
Beyond the Basics
S-S.ALt ................................................................................... Alert  settings
S-S.Lit ............................................................................. Back light settings
S-S.PS .......................................................................Pager screen settings
S-S.OnlY ...............................................................................Mode settings
To turn off normal scanning, when Signal Stalker I is 
running, turn S-S.OnlY setting to ON. 
S-S.Int .................................................................... Voice interrupt settings 
To keep Signal Stalker I active while receiving an audio 
signal, set this function to ON. If you turn this function 
OFF, the scanner does not check signals while receiving 
an audio signal.
S-S.LOG ............................................................................Logging settings
Set S-S.LOG to ON to scan the log channels along with the 
normal channels. 
4.  For other settings, press   or   to select ON or OFF, then press 
E/PGM.
5. Press . /CLR /DELAY to exit the option mode.
6. Press MENU to exit the menu mode.
data skip
Data skip prevents the scanner from stopping on nonmodulated or 
data signals (such as fax or modem transmissions) during a search 
or scan.
Data skip does not apply to the air band and weather 
search mode, as data signals are not generally found in 
these services.
To turn on the data skip feature, complete the following steps:
1.  Turn off the priority feature if it is on.
2. Press MENU.
3. Repeatedly press  or   to display dAtA-S, then press E/PGM.
4 .  Press   or   to select OFF or ON, then press E/PGM. 
NOTE

23
Beyond the Basics
5. Press MENU to exit the menu mode.
keytones
The keytones feature beeps when you press a button on the 
scanner. To modify keytone settings, complete the following steps:
1. Press MENU.
2. Press  or   to until bEEP appears in the display, then press 
E/PGM.
3. Press  or   to select OFF or ON, then press E/PGM. 
4. Press MENU to exit the menu mode.
delay
When the delay feature is active, the scanner automatically 
monitors channel frequency for an additional 2 seconds after a 
transmission stops before resuming scanning or searching.
To access the delay, press . /CLR /DELAY while the scanner is 
monitoring a channel, scanning, or searching. DLY appears when 
the delay is active and disappears when inactive.
Signal Stalker I also has a delay feature. It’s delay time 
is 10 seconds. See “Signal Stalker I” for how to program 
Signal Stalker I Delay.
memory lock
The memory lock feature protects the scanner from accidental 
program changes. 
To turn on the memory lock, hold down DM/M-LOCK until M-
LOCK appears. To turn it off, hold down DM/M-LOCK until M-LOCK 
disappears. When the scanner is locked, it beeps an error tone if 
you try to program a frequency or talk group ID.
Using the memory lock does not prevent the scanner from 
scanning channels.
NOTE
NOTE

24
Trunking Operations
trunking operations
The scanner can track transmissions for up to 10 Motorola Type I, 
Type II, hybrid, EDACS or LTR analog trunking systems. When the 
scanner fi nishes checking activity in the trunked system, it scans 
other conventional frequencies in the bank.
For trunked reception, set the squelch at the center position. If set 
too high, it could prevent your scanner from locking on the control 
channel reliably. If it is set too low, it can delay fi nding the control 
channel. The best setting is critical for monitoring trunked systems. 
programming trunked frequencies
To program trunked frequencies, complete the following steps:
1. Press E/PGM in conventional mode to set the scanner in 
programming mode. Then, press TRUNK. Your scanner beeps, 
then all the bank numbers fl ash.
2.  Press the number key for the desired target storage bank. 
3. Press  or   to select a trunking system type, then press 
E/PGM. You can select from the following systems:
You See  Trunk System
E2 – 800  ........................................Motorola Type II, 800 MHz frequencies
E2 – 900  ........................................Motorola Type II, 900 MHz frequencies
E2 – Hi  ........................ Motorola Type II, VHF (136-174 MHz) frequencies
E2 – UHF  ..................... Motorola Type II, UHF (400-512 MHz) frequencies
E1   .................................................................. Motorola Type I, and Hybrid
Ed   ............................................................. EDACS Wide Band: 9600 baud
Ed – SCt .................................................................................... EDACS Scat
Lt..... ........................................................................................................ LTR
4.  Prog F appears, then press E/PGM. The scanner automatically 
selects the fi rst channel in the selected banks.
5.  Use the number keys to enter a valid frequency within the trunk 
system, then press E/PGM. The bank number, the channel 
number, and E (EDACS), M (Motorola) or L (LTR) appears 
depending upon the trunk system selected.

25
Trunking Operations
•  For EDACS and LTR systems, you must enter the 
frequencies in logical channel number (LCN) order.
•  If you try to enter a duplicate frequency in a bank, the 
scanner beeps and the channel which was previously 
stored appears.
6. Press  or   to select the next channel in the bank and repeat 
Step 4 to enter frequencies in that bank.
7. Press SRCH to begin searching for the trunk’s data channel 
and scan conventional frequencies at the same time. After the 
data channel is acquired, the scanner begins a trunk search that 
fi nds all active talk groups in the trunked system.
8.  (Optional) To turn a bank on or off, press and hold the SCAN/
MANUAL button during trunk scanning. When the trunked bank 
appears, press the bank number (0–9).
talk group ID
Each trunk scanning bank contains ten talk group ID lists (with up to 
10 talk group IDs each), for a total of 100 talk group IDs each. These 
lists organize trunking system users into categories. For example, 
you might use List 1 for police IDs, List 2 for fi re department IDs, 
and List 3 for emergency medical service IDs. After you store talk 
group IDs in a list, you can scan them just as you scan conventional 
channels.
To locate talk group ID lists for your local police, fi re, or 
other agencies, refer to frequency guides available at your 
local RadioShack store. 
Storing talk group IDs
1.  Select the trunking programming mode and the bank you want 
to change.
2. Press  or   to choose trunk system, and press E/PGM.
3. Press  or   to choose Prog id, and press E/PGM.
4. Press  or   to select the scan list location.
NOTES
NOTE

26
Trunking Operations
5.  Enter the talk group IDs for each trunk system. 
LTR talk groups are identifi ed as six-digit numbers in the form 
AHHUUU:
  A ................................................................................Area code (0 to 1)
  H .......................................................... Home repeater (01 through 20)
  U ...................................................................User ID (000 through 254)
6. Press E/PGM.
scanning a talk group ID list
Press SCAN/MANUAL to begin scanning the lists you have stored. 
If an ID is incorrect, Error fl ashes twice and the scanner beeps 
several times, then the scan list numbers appear at the top of the 
display. To correct the entry, delete the incorrect ID.
One of the ten scan lists must always be active. You 
cannot remove all of them.
To remove a scan list from active scanning, use the number keys to 
enter the scan list’s number. The scan list number turns off, and the 
IDs in that list are not scanned.
To restore a scan list to active scanning, use the number keys to 
enter the number of the list again.
locking out a talk group ID
Many municipal and commercial services use trunk systems to 
transmit signals from devices such as water-meter transmitters, 
door alarms, and traffi c signals. These are not voice signals, but are 
assigned talk group IDs. To scan more effi ciently, you can lock out 
up to 100 talk group IDs. 
To lock out an ID, press L/O when the ID appears. The ID is locked 
out, and the next active ID appears. If you lock out an ID while 
searching, it is also locked out of the scan list(s).
To unlock a single ID, complete the following steps:
1.  Select the trunking programming mode and the bank you want 
to review.
NOTE

27
Trunking Operations
2.  When the selected trunked system is displayed, press E/PGM.
3. Use  or   to choose Id Lout, and press E/PGM.
4. Press L/O, the ID is unlocked and the next locked ID displays.
5.  If you unlocked all locked IDs, the scanner displays Non.
To unlock all talk group IDs, hold L/O untill you hear two beeps.
priority talk group ID scanning
Your scanner checks priority IDs more frequently than the other 
IDs. Each group ID list can have one priority ID, and the priority talk 
group ID in List 1 has the highest priority of all.
To turn priority ID scanning on or off, press PRI during ID scanning 
or manual operation. PRI appears when priority scanning is on.
To designate a priority ID, press and hold PRI. P appears. 
Priority ID scanning does not operate if the priority IDs are 
locked out.
monitoring a talk group ID
Your scanner displays activity for talk group IDs. You cannot hear 
conversations in this mode, but it is an excellent way to determine 
which talk group IDs are the most active. 
To monitor a talk group ID, complete the following steps:
1. Hold down SRCH until you hear two short beeps. SRCH 
fl ashes, and all active group IDs appear in succession. 
2. Press HOLD/RESUME. HOLD appears and the scanner stays on 
the current ID.
3.  If you want to listen to (and hold) a different ID, use the number 
keys to enter that ID.
4. Press . HOLD fl ashes, then the scanner monitors the ID.
To stop monitoring the ID, press HOLD/RESUME.
NOTE

28
Trunking Operations
AFS Format
Your scanner can translate decimal talk group lists to the much 
more powerful AFS format. Become familiar with AFS partial entry, 
and your scanning will become more fl exible and effi cient.
The AFS format allows you to enter full or partial EDACS IDs for 
powerful fl exibility in all modes. 
1.  Select the trunking programming mode and a bank.
2. Press  or   to select EDACS, then press E/PGM.
3. Press  or   to select AFS, then press E/PGM.
4. Press  or   to select AFS ON or AFS OFF, then press E/PGM.
talk group ID search range (EDACS)
You can program a specifi c talk group such as 01-011 into the scan 
list memory. In AFS mode, you can program the talk groups for an 
entire agency by pressing corresponding keys.
You can set a range for agencies or fl eet listings for the scanner’s 
EDACS talk group ID search. 
To set a search range, complete the following steps:
1. Press HOLD.
2.  Use the number keys to enter the agency number. For example, 
“01.”
3.  (Optional) To search within a specifi c fl eet, see the number keys 
to enter the agency number. For example, “01.”
For example:
You Press  To Scan
01.E  ......................................................................................... all 01 groups
01.01E  ...........................................all 01 talk groups within the 01 agency
4. Press SRCH.

29
Trunking Operations
You can enter partial group numbers for EDACS talk groups. By 
entering only the desired portion of a group, you can select either 
128, 8, or 1 talk group. For example, you might program every talk 
group in a police department by pressing just four keys.
You cannot use partial talk groups in decimal mode.
To enter a partial EDACS ID:
1.  Enter the agency number.
2.  (Optional) To program all the talk group numbers for one fl eet 
of an agency, enter the fl eet number.
3. Press E/PGM.
Status Bit (S-Bit) Ignore
Some systems use status bits to identify special situations. For 
Motorola Type II systems, the last four bits of a talk group ID are the 
status bits. Your scanner is preset to ignore status bits, but you can 
set the scanner to interpret status bits.
Important: For Motorola Type I systems, you might have 
to turn off status bit ignore to determine the proper fl eet 
map. For other systems, turn on the status bit ignore or 
you will miss some transmissions.
To set the status bit ignore feature, complete the following steps:
1.  Set the scanner to conventional programming mode and then 
press TRUNK.
2.  Select the bank.
3.   Press   or   to select the system type (Motorola), then press 
E/PGM.
4. Press  or   to select S-bit, then press E/PGM. 
5. Press  or   to select ON or OFF, then press E/PGM. 
NOTE
NOTE

30
Trunking Operations
trunk search and scan
You can trunk scan and scan conventional frequencies at the same 
time. You can program conventional frequencies in the same bank 
as trunking systems, but not while in trunk mode.
To scan both trunking and conventional banks, turn off trunking, 
select the banks to scan, then turn on trunking again.
To switch to trunk modes while scanning conventional frequencies, 
complete the following steps:
1. Press TRUNK. The scanner begins scanning both trunking and 
conventional banks.
2. Hold down TRUNK for about 1 second. The scanner switches 
to the trunk scan mode.
3. Hold down TRUNK for about 1 second again. The scanner 
switches to the trunk search mode.
To identify a trunked frequency while scanning or searching, 
press  . The frequency fl ashes twice. Then hold down   until a 
confi rmation tone sounds and the ID and the frequency alternate.
To return to normal operation, press  .
type I and hybrid trunked systems
Your scanner is preset to scan Type II system IDs. When you scan 
trunked frequencies, each Type II user ID appears as an even 
number without a dash (example 2160). Your scanner can also scan 
Type I trunked systems. Each Type I ID appears as a three- or four-
digit number, followed by a hyphen, followed by a one- or two-digit 
number (example 200-14).
•  If you notice a mix of odd- and even-user IDs (examples 
6477, 2160, 6481, 6144, and 1167), then you are 
probably monitoring either a Type I or hybrid (a 
combination of Type I and Type II user IDs) system with 
the S-Bit function turned off.
•  If you consistently miss responses even with scan 
delay, change your default system type or fl eet map.
NOTES

31
Trunking Operations
Subfl eet information is included with the frequency list for a Type 
I system. There are 16 preset fl eet maps to choose from, and it is 
best to start with these when setting up a Type I or hybrid trunk 
scanning bank. 
preset fl eet maps
1.  Set the scanner for conventional scanning and press E/PGM, 
then press TRUNK to select the trunking programming mode 
and the bank you want to change.
2. Repeatedly press  or   to select TYPE 1 SYSTEM (E1), then 
press E/PGM.
3. Repeatedly press  or   to select FLEEt, then press E/PGM. 
4. Repeatedly press  or  to select the name of the desired map 
(example E1P7). 
E1P1 Block Code 0 1 234567
Size S11 S11 S11 S11 S11 S11 S11 S11
E1P2 Block Code 0 1 234567
Size S4 S4 S4 S4 S4 S4 S4 S4
E1P3 Block Code 0 1 234567
Size S4 S4 S4 S4 S4 S4 S12 (S12)
E1P4 Block Code 0 1 234567
Size S12 (S12) S4 S4 S4 S4 S4 S4
E1P5 Block Code 0 1 234567
Size S4 S4 S12 (S12) S4 S4 S4 S4
E1P6 Block Code 0 1 234567
Size S3 S10 S4 S4 S12 (S12) S12 (S12)
E1P7 Block Code 0 1 234567
Size S10 S10 S11 S4 S4 S4 S4 S4
E1P8 Block Code 0 1 234567
Size S1 S1 S2 S2 S3 S3 S4 S4
E1P9 Block Code 0 1 234567
Size S4 S4 S0 S0 S0 S0 S0 S0

32
Trunking Operations
E1P10 Block Code 0 1 234567
Size S0 S0 S0 S0 S0 S0 S4 S4
E1P11 Block Code 0 1 234567
Size S4 S0 S0 S0 S0 S0 S0 S0
E1P12 Block Code 0 1 234567
Size S0 S0 S0 S0 S0 S0 S0 S4
E1P13 Block Code 0 1 234567
Size S3 S3 S11 S4 S4 S0 S0 S0
E1P14 Block Code 0 1 234567
Size S4 S3 S10 S4 S4 S4 S12 (S12)
E1P15 Block Code 0 1 234567
Size S4 S4 S4 S11 S11 S0 S12 (S12)
E1P16 Block Code 0 1 234567
Size S3 S10 S10 S11 S0 S0 S12 (S12)
5. Press E/PGM . The scanner return to the previous screen 
(FLEEt).
When the scanner searches for transmissions, you see 
Type I fl eet and subfl eet IDs such as 100-12, 100-9, 000-12, 
or 400-8.
programming a fl eet map
If no preset fl eet maps let you follow complete conversations, then 
you can program a fl eet map.
1.  Select the trunking programming mode and the bank you want 
to change.
2. Press  or   to select Type 1 System (E1), then press E/PGM. 
3. Press  or   to select FLEEt, then press E/PGM. A 
preprogrammed fl eet map appears.
4. Press  or   until USr appears. Then press E/PGM.
5. Press  or   to select the size code for the fi rst block, then press 
E/PGM. The next available block appears. If you select size 
NOTE

33
Trunking Operations
codes S-12, S-13, or S-14, these restrictions apply:
•  S-12 can only be assigned to Blocks 0, 2, 4, or 6
•  S-13 can only be assigned to Blocks 0 and 4
•  S-14 can only be assigned to Block 0
Because these size codes require multiple blocks, the 
scanner prompts you for the next available block when 
you program a fl eet map. For example, if you set Block 0 
as S-12, b2 is the next block instead of b1. If you assign 
Block 0 as S-14, you would not see another prompt 
because S-14 uses all available blocks.
6.  Selecte a size code for each desired block.
For Motorolla Type II, instead of selecting the size block, 
enter size code S-0.
7. Press SRCH. The scanner searches using the map you 
programmed.
programming base and offset frequencies
To properly track Motorola VHF and UHF trunked systems, you 
must program the applicable base and offset frequencies for each 
system.
1.  Select the trunking programming mode.
2.  Press the number key of the bank where you want to store the 
base frequency.
3. Press  or   to select Motorola Type II UHF or VHF system, then 
press E/PGM. 
4. Press  or   to  select bASE, then press E/PGM. 
5.  Press the confi guration Block Number (1-3) .
6.  Press the number keys to enter a new base frequency, then 
press E/PGM.
7. Press . The display changes to spacing-frequency entry mode. 
NOTE
NOTE

34
Trunking Operations
8.  Enter the frequency using the number keys according to the 
following guide, then press E/PGM.
•  For Motorola Type II VHF (E2-VHF Hi band) use 5kHz steps 
between 5 kHz – 100 kHz.
•  For Motorola Type II UHF (E2-UHF band) use 12.5kHz steps 
between 12.5 kHz – 100 kHz.
9. Press . The display changes to the offset channel entering 
mode.
10. Enter an offset channel using the number keys, then press 
E/PGM. You can only input the frequency between 380 – 759.
11. Press . /CLR /DELAY. The scanner returns to the previous 
screen. Repeat steps 5-10 if you want to program another 
confi guration.
Motorola disconnect tone detect function
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.  Select the trunking programming mode and the bank you want 
to change.
2. Press  or   to select Motorola Type 2 or Motorola Type 1, then 
press E/PGM.
3. Press  or   to select Eot, then press E/PGM.
4. Press  or   to select Eot ON or Eot OFF, then press E/PGM.
If you set the squelch so you hear a hissing sound, the 
scanner will remain on the voice channel, even when a 
disconnect tone is transmitted or there is no signal at all.
NOTE

35
Special Features
special features
PC 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).
1.  Turn off your scanner.
2.  Connect the interface cable to your computer and then connect 
the other end of the cable to the scanner’s PC/IF port.
3.  Install the software to your computer and run the program.
4.  To set up the program, click on Tools, select Confi guration, and 
select PRO-433 (if necessary).
5.  Turn the scanner on. PGM and WirEd appear automatically. 
6.  Send the data from the PC. Data frame numbers being received 
appear.
If the scanner receives no data from the PC for more than 
20 seconds, T-Err appears and wired programming stops.
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. C-Err indicates the packet number 
where a communication error occurred. S-Err indicates the packet 
number where a checksum error occurred. L-Err indicates the 
packet number where a length fi eld error occurred.
scanner cloning
You can clone all the frequencies, trunking talk groups, and fl eet 
maps programmed in your PRO-433 to another PRO-433 or PRO-
528 using an optional interface cable (available at your local 
RadioShack or www.radioshack.com).
1.  Turn off your scanner.
NOTE

36
Special Features
2.  Connect the interface cable into each scanner’s PC/IF port.
3.  While you press and hold E/PGM on both scanners, turn on 
both scanners.
4.  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
5. Press E/PGM on the First Unit and then the Clone unit. The 
First Unit checks whether the Clone unit is connected correctly. 
When a First Unit receives the response from the Clone unit, 
the data transfer starts. During data transfer, SND and REC 
fl ashes.
6.  When the data transfer is completed, donE appears. If the data 
transfer is not successful, Error appears.
7.   After the clone operation is complete, remove the cable, turn 
both units off and then on again.

37
Care
care
You can extend the life of your scanner by following these basic 
care guidelines:
•  Keep the scanner dry; if it gets wet, wipe it dry immediately. 
•  Use and store the scanner only in normal temperature 
environments. 
•  Handle the scanner carefully; do not drop it. 
•  Keep the scanner away from dust and dirt, and wipe it with a 
damp cloth occasionally to keep it looking new.
troubleshooting
If your scanner is not working as it should, these suggestions might 
help you eliminate the problem. If the scanner still does not operate 
properly, take it to your local RadioShack store for assistance.
Why won’t my scanner scan?
Before you can scan frequencies, you must save some 
frequencies into channels. You can enter these frequencies 
manually or search for them. 
You may need to adjust your SQUELCH setting. 
You may need to check your antenna connection.
Why is my scanner’s display so dark?
You may need to adjust your dimmer setting. Press DM/M-LOCK to 
adjust the dimmer setting.
Why doesn’t my scanner acquire a data channel?
You may have need to adjust your SQUELCH setting.
Your scanner may be missing the data channel frequency. Press 
SRCH to search for the data channel.

38
Care
Why am I missing replies to conversations? Why isn’t my scanner 
scanning trunked frequencies? 
You may have selected an incorrect fl eet map. Try another fl eet 
map or program your own.
You may be monitoring a Type I system, but your scanner is 
set to scan Type II systems. Set you scanner to Type 1 trunked 
frequencies.
resetting the scanner
Caution: This procedure clears all the information you have stored 
in the scanner. Before you reset the scanner, try turning it off and 
on to see if it begins working properly. Reset the scanner only when 
you are sure it is not working properly.
1.  Turn off the scanner.
2.  While holding down 2, 9 and HOLD, turn on the scanner. CLEAr 
fl ashes for about 5 seconds as the scanner clears its memory.
To ensure that the scanner clears its memory properly, 
leave it on until CLEAr stops fl ashing.
Follow these steps to restore the 150 preprogrammed frequencies 
stored in the private bank.
1.  Turn off the scanner.
2.  While holding down 3 and E/PGM, turn on the scanner. After 
several seconds, the scanner restores the frequencies.
service and repair
If your scanner is not performing correctly, take it to your local 
RadioShack store for assistance. To locate the nearest RadioShack, 
use the store locator feature on RadioShack’s website (www.
radioshack.com), or call 1-800-The Shack (800-843-7422) and follow 
the menu options. Modifying or tampering with the scanner’s 
internal components can cause a malfunction and might invalidate 
its warranty and void your FCC authorization to operate it.
NOTE

39
Specifi cations
specifi cations
Frequency Coverage: ...................................... 29–54 MHz (in 5 kHz steps)
   .................................................. 108–136.9875 MHz (in 12.5 kHz steps)
   ................................................................ 137–174 MHz (in 5 kHz steps)
   ............................................. 179.7500-215.7500 MHz (in 6 MHz steps)
   ......................................................... 216–224.995 MHz (in 5 kHz steps)
   ...................................................225-399.9875 MHz (in 12.5 kHz steps) 
   ........................................................... 400–512 MHz (in 6.25 kHz steps)
   ......................................... 806.0000–823.9875 MHz (in 12.5 kHz steps)
   ......................................... 849.0125–868.9875 MHz (in 12.5 kHz steps)
   ......................................... 894.0125–956.0000 MHz (in 12.5 kHz steps)
   ..................................... 1240.0000–1300.0000 MHz (in 12.5 kHz steps)
Number of Banks ..................................................................................... 10
Channels .............................................................................................. 1000
Sensitivity (AM/FM/WFM):
FM  ................................................................ 20 dB S/N at 3 kHz deviation)
 29–54 MHz ....................................................................................0.4 μV
 137–174 MHz ................................................................................0.5 μV
 216–225 MHz ................................................................................0.5 μV
 400–512 MHz ................................................................................0.4 μV
 806–956 MHz ................................................................................0.6 μV
 1240–1300 MHz ............................................................................1.0 μV
AM ............................................................... 20 dB S/N at 60% modulation
 108–136.9875 MHz .......................................................................1.6 μV
 225–400 MHz ................................................................................1.5 μV
WFM ......................................................... 20 dB S/N at 22.5 kHz deviation
 179.750–215.750 MHz ..................................................................2.0 μV
IF Rejection (at 162.4 MHz) .................................................................80 dB
Operating Temperature  
  Normal ..........................................................–4° to 140°F (–20° to 60°C)
  Signal Stalker I .............................................14° to 140°F (–10° to 60°C)
Scan Speed ................................................................ 90 Channels/Second
Search Speed:
 Normal ........................................................................ 90 Steps/Second
  Hypersearch ..................... 250 Steps/Second (5 kHz step bands only)
Priority Sampling ........................................................................2 Seconds
Delay Time ..................................................................................2 Seconds
IF Frequencies ............................ 265.55/380.75 MHz, 10.85 MHz, 450 kHz
Antenna Impedance ..............................................................................50Ω
Audio Output  ....................................................................... 2W maximum
Built-in Speaker ................................................................3 Inches (77 mm)
  ................................................................................... 8Ω Dynamic Type
Power Requirements ..................Supplied AC Adapter (12V DC, 500 mA)
Current Drain:
 Squelched ................................................................................. 105 mA
 Full Output ................................................................................. 460 mA
Dimensions (HWD) ................2.25 x 7.35 x 6 inches (56 x 187 x 152 mm)
Weight .......................................................... 37 oz (1.05 kg) (without case)
  53 oz  (1.5 kg) (with case)
Specifi cations are typical; individual units might vary. Specifi cations are 
subject to change and improvement without notice.

©2006. RadioShack Corporation.
All rights reserved. RadioShack and RadioShack.com are 
trademarks used by RadioShack Corporation.
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. 
•  Connect the equipment into an outlet on a circuit different from that to which the receiver is 
connected. 
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 
modifi cations not expressly approved by RadioShack may cause interference and void the user’s 
authority to operate the 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.
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
This product is warranted by RadioShack against manufacturing defects in material and 
workmanship under normal use for one (1) year from the date of purchase from RadioShack 
company-owned stores and authorized RadioShack franchisees and dealers. For complete 
warranty details and exclusions, check with your local RadioShack store.
RadioShack Customer Relations
300 RadioShack Circle
Fort Worth, TX 76102  04/04
Printed in China
UBZZ01345ZA(0)
07A06
Hypersearch, Hyperscan, and Adaptaplug are trademarks used by RadioShack 
Corporation.
Motorola, Smartnet, and Privacy Plus are registered trademarks of Motorola Inc.
EDACS is a registered trademark of MA-COM Inc.
LTR is a registered trademark of EF Johnson.