Cat. No. 20-417
Owner’s Manual
PRO-2048 200-Channel
Programmable Home Scanner
Please read before using this equipment.
Adjustable Tone — lets you turn on
or off the beep you hear when you
press a key.
antenna to the screw-in terminal, or
an external antenna to the BNC con-
nector.
Two-Second Scan Delay — delays
scanning for 2 seconds before mov-
ing to another channel, so you can
hear more replies.
Optional Power Sources — you
can power your scanner using the
supplied AC adapter or an optional
DC cigarette-lighter power cable.
Weather Band Key — scans the
preprogrammed weather frequen-
cies so you can stay informed about
current weather conditions.
Warning: To prevent fire or shock
hazard, do not expose this system
to rain or moisture.
Memory Backup — keeps the chan-
nel frequencies stored in your scan-
ner’s memory for up to 3 days during
a power loss.
CAUTION
RISK OF ELECTRIC SHOCK.
!
DO NOT OPEN.
CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-SERVICE-
ABLE PARTS INSIDE. REFER SERVIC-
ING TO QUALIFIED PERSONNEL.
Squelch Control — lets you adjust
the receiver’s sensitivity low enough
to receive weak signals or high
enough to eliminate receiver noise
when not receiving a signal.
This symbol is intended to alert
you to the presence of uninsulat-
ed dangerous voltage within the
scanner’s enclosure that might be
of sufficient magnitude to consti-
tute a risk of electric shock. Do not
open the scanner’s case.
Lock-Out Function — prevents
channels you select from being
scanned.
Backlit Liquid Crystal Display —
lets you easily see the indicators on
the scanner’s display, even at night.
This symbol is intended to inform
you that important operating and
maintenance instructions are in-
cluded in the literature accompa-
nying this scanner.
!
Audio Output Jack — lets you con-
nect an earphone or headphones for
private listening, or an external
speaker for listening in a remote or
noisy area.
We recommend you record your
scanner’s serial number here. The
number is on the back panel.
Optional Antenna Terminals — let
you connect the supplied telescoping
Serial Number: ________________
3
Your PRO-2048 can receive these bands:
Band
Frequency Range
(MHz)
10-Meter Ham Band
VHF-Lo
29.00–29.7
29.7–50.00
50.00–54.00
108–136.975
137–148
6-Meter Ham Band
Aircraft
Government/Ham
VHF-Hi
148–174
Ham/Government
UHF-Lo
406–450
450–470
UHF-T (TV)
UHF-Hi
470–512
806–823.9375
851–868.9375
896.1125–956
FCC NOTICE
Your scanner might cause radio or TV interference even when it is operating
properly. To determine if your scanner is causing the interference, turn off your
scanner. If the interference goes away, your scanner was causing it. Try to elim-
inate the interference by:
• Moving your scanner away from the receiver
• Connecting your scanner to an outlet that is on a different electrical circuit
from the receiver
• Contacting your local RadioShack store for help
If you cannot eliminate the interference, the FCC requires that you stop using
your scanner.
4
This device complies with Part 15 of FCC Rules. Operation is subject to the fol-
lowing 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.
SCANNING LEGALLY
Your scanner covers frequencies used by many different groups including police
and fire departments, ambulance services, government agencies, private com-
panies, amateur radio services, military operations, pager services, and wireline
(telephone and telegraph) service providers. 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 (either 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), you are sub-
ject to fines and possible imprisonment for intentionally listening to, using, or di-
vulging the contents of such a transmission unless you have the consent of a
party to the conversation (unless such activity is otherwise illegal). We encour-
age responsible, legal scanner use.
Note: Mobile use of this scanner is unlawful or requires a permit in some areas.
Check the laws in your area.
5
CONTENTS
Preparation ..................................................................................................... 8
Connecting Power ..................................................................................... 8
Using Standard AC Power .................................................................. 8
Using Vehicle Battery Power ............................................................... 8
Connecting the Antenna ............................................................................ 9
Connecting an Optional Antenna ...................................................... 10
Resetting the Scanner’s Display .............................................................. 10
Initializing the Scanner ............................................................................ 11
Connecting an Earphone/Headphones/External Speaker ....................... 12
Listening Safely ................................................................................. 12
Traffic Safety ..................................................................................... 12
Understanding Your Scanner ...................................................................... 13
A Look at the Front Panel ........................................................................ 13
A Look at the Display ............................................................................... 15
Understanding the Scanner’s Memory .................................................... 17
Channel-Storage Banks .................................................................... 17
Monitor Memories ............................................................................. 17
Operation ...................................................................................................... 18
Turning On the Scanner/Setting the Volume and Squelch ...................... 18
Manually Storing Frequencies in Channels ............................................. 19
Searching For and Temporarily Storing Active Frequencies .................... 20
Limit Search ...................................................................................... 20
Direct Search .................................................................................... 21
Search Skip Memory ......................................................................... 22
Listening to Monitor Memories ................................................................. 23
Moving a Frequency from a Monitor Memory to a Channel ..................... 23
Scanning the Stored Channels ................................................................ 24
Turning Channel-Storage Banks On and Off ........................................... 24
Manually Selecting a Channel ................................................................. 24
Listening to the Weather Band ................................................................ 25
Special Features ........................................................................................... 26
Using Priority Channels ........................................................................... 26
Using the 2-Second Delay ....................................................................... 27
Locking Out Channels ............................................................................. 27
Changing Scanning and Search Speeds ................................................. 28
Skipping Data Signals ............................................................................. 28
Turning the Key Tone On or Off ............................................................... 29
6
A General Guide To Scanning ..................................................................... 30
Guide to Frequencies ............................................................................... 30
US Weather Frequencies .................................................................. 30
Canadian Weather Frequencies .........................................................30
Ham Radio Frequencies .................................................................... 30
Birdie Frequencies .............................................................................30
Guide to the Action Bands ....................................................................... 31
United States Broadcast Bands ........................................................ 31
Typical Band Usage .......................................................................... 31
Primary Usage ................................................................................... 33
Specified Intervals .................................................................................... 33
Band Allocation ........................................................................................ 34
Frequency Conversion ............................................................................. 39
Troubleshooting ........................................................................................... 40
Care and Maintenance ................................................................................. 41
Specifications ............................................................................................... 42
7
PREPARATION
Your scanner’s display is protected
during shipment by a piece of blue
film. Peel off this film before you use
the scanner.
• Be sure you connect the AC
adapter to the scanner before
you connect it to a standard AC
outlet. Then disconnect the
adapter from the AC outlet
before you disconnect it from the
scanner.
CONNECTING POWER
• If you have difficulty inserting the
AC adapter’s polarized plug, do
not force it. Turn it over and rein-
sert it.
Note: If a power failure occurs or if
the DC cigarette-lighter power cable
or AC adapter is disconnected, the
scanner’s memory backup circuit
keeps information in memory for up
to 3 days.
1. Insert the supplied AC adapter’s
barrel plug into the scanner’s DC
12V jack.
Using Standard AC Power
EXT SP
DC 12V
RESET
You can power your scanner from a
standard AC outlet using the sup-
plied AC adapter.
Warning: Do not use the AC adapt-
er’s polarized plug with an extension
cord receptacle unless the blades
can be fully inserted to prevent blade
exposure.
2. Plug the adapter’s power mod-
ule into a standard AC outlet.
ANT
EXT SP
DC 12V
Cautions:
• The supplied AC adapter sup-
plies 12 volts and delivers 500
milliamps. Its center tip is set to
positive, and its plug properly fits
the scanner’s DC 12V jack.
Using an AC adapter that does
not meet these specifications
could damage the scanner or
the adapter.
Using Vehicle Battery Power
To power your scanner from your ve-
hicle’s cigarette-lighter socket, you
need a DC cigarette-lighter power
cable such as Cat. No. 270-1533).
8
Cautions:
Note: If the scanner does not oper-
ate properly when you use a ciga-
rette-lighter power cable, unplug the
power cable from the cigarette-
lighter socket and clean the socket to
remove ashes and other debris.
• The DC cigarette-lighter power
cable must be capable of deliv-
ering 12 volts and 500 milli-
amps, its center tip must be set
to positive, and its barrel plug
must correctly fit the scanner's
DC 12V
jack. The recommended
CONNECTING THE
ANTENNA
power cable meets these speci-
fications. Using a power cable
that does not meet these specifi-
cations could damage the scan-
ner or the power cable.
To attach the supplied telescoping
antenna to your scanner, simply
screw it into the hole on top of your
scanner.
• Always plug the power cable
into the scanner before you plug
it into your vehicle's cigarette-
lighter socket. Always unplug
the power cable from the vehi-
cle's cigarette-lighter socket
before you unplug it from the
scanner.
Follow these steps to use vehicle
battery power.
ANT
EXT SP
DC 12V
RESET
The antenna’s length controls its
sensitivity. Adjust the length of the
telescoping antenna as follows for
the best reception.
1. Insert the power cable’s barrel
29–54 MHz
Extend all 3
segments
DC 12V
plug into the scanner’s
jack.
108–174
MHz
Extend only 2
segments
2. Plug the other end of the power
cable into the vehicle’s cigarette-
lighter socket.
406–956
MHz
Collapse fully
(only 1 segment
extended)
9
Warning: Use extreme caution when
installing or removing an outdoor an-
tenna. If the antenna starts to fall, let
it go! It could contact overhead power
lines. If the antenna touches a power
line, contact with the antenna, mast,
cable or guy wires can cause electro-
cution and death! Call the power
company to remove the antenna. Do
not attempt to do so yourself.
Connecting an Optional
Antenna
The supplied telescoping antenna re-
ceives strong, local signals. Howev-
er, to receive weaker, more distant
signals in all bands, you can attach
an optional antenna, such as an ex-
ternal mobile antenna or outdoor
base station antenna. Your local Ra-
dioShack store sells a variety of an-
tennas.
Cautions:
• Do not run the cable over sharp
edges or moving parts.
Note: If you connect an external an-
tenna, remove the telescoping an-
tenna from the top of the scanner.
• Do not run the cable next to
power cables or other antenna
cables.
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. If your antenna’s cable
does not have a BNC connector, use
a BNC adapter available at your local
RadioShack store.
• Do not run the cable through
areas that produce extreme
heat.
• Follow all cautions and warnings
included with the antenna.
Follow the installation instructions
supplied with the antenna, route the
antenna cable to the scanner, then
connect it to the ANT jack on the back
of the scanner.
RESETTING THE
SCANNER’S DISPLAY
If the scanner’s display stops work-
ing after you connect a power
source, follow these steps to reset it.
1. If the scanner is off, press
ANT
EXT SP
POWER to turn it on.
10
INITIALIZING THE
SCANNER
If the scanner or its display does not
work properly even after resetting it,
follow these steps to initialize the
scanner.
Initializing the scanner
Caution:
2. Using a pointed object, such as
a straightened paper clip, press
RESET on the back of the scan-
ner. The display resets, and the
scanner turns off.
clears all the channels you stored in
memory. Initialize the scanner only
when you are sure it is not working
properly.
1. If the scanner is off, press
POWER to turn it on.
DC 12V
RESET
EXT SP
2. Hold down /CLEAR, then press
•
RESET on the back of the scan-
ner using a pointed object, such
as a straightened paper clip.
The display resets, and the
scanner turns off.
3. Press POWER to turn on the
scanner again.
ANT
EXT SP
DC 12V
RESET
3. Press POWER to turn on the
scanner.
11
Listening Safely
CONNECTING AN
EARPHONE/
HEADPHONES/
EXTERNAL SPEAKER
To protect your hearing, follow these
guidelines when you use an ear-
phone or headphones.
• Do not listen at extremely high
volume levels. Extended high-
volume listening can lead to per-
manent hearing loss.
1
EXT SP
The /8-inch
jack on the back
of the scanner lets you connect an
optional earphone (such as Cat. No.
33-175), headphones (such as Cat.
No. 20-210), or an external speaker
(such as Cat. No. 21-549).
• Set the volume to the lowest set-
ting before you begin listening.
After you begin listening, adjust
the volume to a comfortable
level.
ANT
EXT SP
DC 12V
RESET
• Once 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.
Note: Connecting any external de-
EXT SP
disconnects the internal speaker.
vice to the
jack automatically
Traffic Safety
Do not wear an earphone or head-
phones while operating a motor vehi-
cle or riding a bicycle. This can
create a traffic hazard and could be
illegal in some areas.
Even though some earphones and
headphones let you hear some out-
side sounds when listening at normal
volume levels, they still can present a
traffic hazard.
12
UNDERSTANDING YOUR SCANNER
Once you understand a few simple terms we use in this manual and familiarize
yourself with your scanner’s features, you can put the scanner to work for you.
You simply find the communications you want to receive, then set the scanner
to scan those frequencies.
A frequency is the tuning location of a station (expressed in kHz or MHz). To
find active frequencies, you can use the limit search function which lets you
search within a specific range of frequencies or the direct search function
which lets you search up or down from the currently displayed frequency.
When you find a frequency, you can store it into a permanent memory location
called a channel, which is grouped with your other channels in a channel-
storage bank. You can then scan the channel-storage banks to see if there is
activity on the frequencies stored there. Each time the scanner finds an active
frequency, it stays on that channel until the transmission ends.
Another option is to store the frequency into a temporary memory location
called a monitor memory until you decide to move it to a channel.
Just keep in mind — you search frequencies and scan channels.
A LOOK AT THE FRONT PANEL
This look at the scanner’s front panel will help you understand each control’s
function.
VOLUME
Sets the scanner’s volume.
SQUELCH
Adjusts the scanner’s receiver sensitivity to help you elim-
inate background noise.
13
SCAN
Starts scanning through the stored channels.
MANUAL
Stops scanning and lets you manually enter a channel
number.
L/O/SEARCH SKIP
Turns the selected channel’s lockout function on and off,
or skips a specified frequency during a limit or direct
search.
DELAY
Programs a 2-second delay for the selected channel.
PRI/HYPER SEARCH Sets and turns on and off the priority function for a partic-
ular channel, or selects the HyperSearch speed.
MON
Stores frequencies into and accesses the 10 monitor
memories.
LIMIT
Used to set the lower or upper limit during frequency
searches.
SPEED
Changes the scanning or search speed.
Turns the scanner on and off.
POWER
D —
Enters the up or down direction in the search mode.
Number Keys
Each key has a single-digit label and a range of numbers.
The single digits are used to enter a channel or a frequen-
cy. The range of numbers (21–40, for example) above the
key indicates the channels that make up a channel-stor-
age bank.
/CLEAR
Enters the decimal point in a frequency, or clears an incor-
rect entry. Also used when you initialize the scanner.
•
ENTER
PGM
WX
Enters programmed frequencies into channels.
Programs frequencies into channels.
Searches through the seven preprogrammed weather
channels.
DATA
Turns the data skip feature on and off.
14
A LOOK AT THE DISPLAY
The display’s indicators show the scanner’s current operating mode.
MON
Appears when you listen to a monitor memory.
BANK
Appears with numbers (1–10) next to it to show which
channel-storage banks are turned on for scanning.
SCAN
Appears when you scan channels. Blinks when the scan-
ner is in the HyperScan mode.
MANUAL
Appears when you manually select a channel.
PROGRAM
Appears while you program frequencies into the scan-
ner’s channels.
P
Appears when you are hearing a priority channel.
CH
Digits to the left of this indicator show which channel the
scanner is tuned to.
MHz
Digits to the left of this indicator show which frequency the
scanner is tuned to.
PRIORITY
LOCKOUT
Appears when you turn on the priority channel feature.
Appears when you manually select a locked channel, or
during a search hold when the frequency is stored in
search skip memory.
15
DATA
Appears while the data skip function is turned on.
DELAY
Appears when you program a channel for a two-second
delay before scanning or when you listen to a channel
programmed with the delay feature.
WX
Appears when the scanner is in the weather band mode.
and
Indicates the search direction. Blinks in the high speed
search mode.
s
t
SEARCH
Appears during a limit (-L-) or direct (-d-) search or
weather scan. Blinks in the HyperSearch mode.
Error
Lo
Appears when you make an incorrect entry.
Appears when you program the lower limit for a frequency
search.
Hi
Appears when you program the upper limit for a frequency
search.
-h-
-H-
Appears during a direct search hold.
Appears during a limit or weather search hold.
16
Monitor Memories
UNDERSTANDING THE
SCANNER’S MEMORY
The scanner has 10 monitor memo-
ries. You can use these memories to
temporarily store frequencies while
you decide whether or not to store
them into channels. This is handy for
quickly storing an active frequency
when you search through an entire
band. You can manually select these
memories, but you cannot scan
them. See “Searching For and Tem-
porarily Storing Active Frequencies”
on Page 20.
You can store up to 210 frequencies
into your scanner’s memory. This
scanner has 200 channel memories
and 10 monitor memories.
Channel-Storage Banks
To make it easier to identify and se-
lect the channels you want to listen
to, channels are divided into 10 chan-
nel-storage banks of 20 channels
each. Use each storage bank to
group frequencies, such as the po-
lice department, fire department, am-
bulance services, or aircraft (see
“Guide to the Action Bands” on
Page 31).
For example, the police department
might use four frequencies, one for
each side of town. You could pro-
gram the police frequencies starting
with Channel 1 (the first channel in
Bank 1) and program the fire depart-
ment starting with Channel 21 (the
first channel in Bank 2).
17
OPERATION
4. Turn VOLUME clockwise to set
TURNING ON THE
SCANNER/SETTING
THE VOLUME AND
SQUELCH
1
the scanner’s volume about /4
of the way between MIN and
MAX.
1. Turn SQUELCH fully clockwise.
5. Turn SQUELCH counterclock-
wise until you hear a hissing
noise.
2. Press POWER to turn on your
scanner. The scanner continu-
ously scans the unlocked chan-
nels.
6. Adjust VOLUME to a comfortable
level.
7. Slowly turn SQUELCH clockwise
until the hissing noise stops.
Squelch Tips:
• If the scanner picks up un-
wanted or weak transmis-
sions, slightly turn SQUELCH
clockwise to decrease re-
ceiver sensitivity.
Note: If you have not stored any
frequencies into channels, the
scanner does not scan.
• If the scanner does not pick
up any transmissions, slightly
turn SQUELCH counterclock-
wise to increase receiver sen-
sitivity.
3. Press MANUAL to stop the scan-
ning. The display shows the cur-
rent channel.
8. To turn off the scanner, press
POWER.
18
PGM
3. Press
. BANKand the bank
MANUALLY STORING
FREQUENCIES IN
CHANNELS
number, the selected channel
number and CH, 000.0000
MHz, and PROGRAMappear.
You can manually store up to 200 fre-
quencies into your scanner’s chan-
nels.
Great references for active frequen-
cies are the RadioShack “Police Call
Guide including Fire and Emergency
Services,” “Official Aeronautical Fre-
quency Directory,” and “Maritime
Frequency Directory.” We update
these directories every year, so be
sure to get a current copy.
4. Enter the frequency you want to
store, including the decimal
point.
Note: When you enter a fre-
quency, the scanner automati-
cally rounds it to the nearest
valid number. For example, if
If you do not have a reference to fre-
quencies in your area, you can use a
limit or direct search to find a trans-
mission (see “Searching For and
Temporarily Storing Active Frequen-
cies” on Page 20).
151.473
you enter
, your scanner
rounds it up to 151.475.
ENTER
5. Press
to store the fre-
quency into the selected chan-
nel.
Follow these steps to manually store
frequencies.
MANUAL
1. Press
ning.
to stop the scan-
Note: If you made a mistake in
Step 4, Errorappears. Repeat
Steps 4 and 5.
6. To program the next channel in
sequence, repeat Steps 3–5. To
program other channels not in
sequence, repeat Steps 2–5.
2. Enter the channel number where
you want to store a frequency.
19
SEARCHING FOR AND
TEMPORARILY
STORING ACTIVE
FREQUENCIES
You can search for frequencies using
a limit or direct search, then tempo-
rarily store frequencies into monitor
memories.
Note: If you enter an invalid fre-
quency, Errorappears. To cor-
rect this, simply repeat the step.
Limit Search
LIMIT
3. Press
. Hiand a frequency
appear.
A limit search lets you search for ac-
tive transmissions within a specified
range of frequencies.
Note: You can also use the scan-
ner’s delay feature while using a limit
search (see “Using the 2-Second De-
lay” on Page 27).
4. Using the number keys, enter
the highest frequency you want
to search within the desired fre-
quency range, then press
Follow these steps to search for ac-
tive frequencies using a limit search.
ENTER
.
PGM
LIMIT
. Loand a
1. Press
, then
frequency appear.
5. Press D to search upward from
the lower to the upper limit, or
press — to search downward
from the upper to the lower limit.
-L-, SEARCH, and s or t
appear, and the next available
monitor memory flashes.
2. Using the number keys, enter
the lowest frequency (including
the decimal point) you want to
search within the desired fre-
quency range, then press
ENTER
.
20
6. When the scanner finds an
active frequency, you can do
one of the following:
Follow these steps to search for ac-
tive frequencies using
search.
a
direct
• To store the displayed fre-
quency into the current moni-
tor memory, quickly press
MON.
1. Press MANUAL.
• To continue the search, press
D or —.
• To hold the frequency, press
LIMIT. -H-appears.
2. Using the number keys, enter
the frequency (including the dec-
imal point) you want to start the
search from, or the channel
number containing the starting
frequency.
Press LIMIT again to cancel the
hold and resume the limit
search.
Notes:
• If you press D or — during the
hold mode, the frequency
changes in the current step
increment toward the upper or
lower limit (see “Specifica-
tions” on Page 42).
3. Press D to search up or — to
search down starting from the
specified frequency or channel.
-d-, SEARCH, and s or
t
appear, and the next available
monitor memory flashes.
• If you tune to a search skip
frequency, the display shows
LOCKOUT (see “Search Skip
Memory” on Page 22).
Direct Search
A direct search lets you specify a
starting frequency, then search for
active transmissions above or below
the specified frequency.
If you enter an invalid fre-
quency, Error appears. Re-
peat Steps 2 and 3.
Note:
You can also use the scan-
Note:
ner’s delay feature while using direct
search (see “Using the 2-Second De-
lay” on Page 27).
21
4. When the scanner finds an
active frequency, you can do
one of the following:
To skip a frequency, press L/O/
SEARCH SKIP when the scanner
stops on the frequency during a limit,
direct, or weather search.
• To store the frequency into the
current
monitor
memory,
press MON.
• To continue the search, press
D or —.
• To hold the frequency, press
LIMIT. -h-appears.
Press LIMIT again to cancel the
hold and resume the direct
search.
To clear a single frequency from skip
memory so the scanner can stop on
it during a limit, direct, or weather
search, press LIMIT to hold the
search, press D or — to select the
skipped frequency, then press L/O/
SEARCH SKIP until LOCKOUTdisap-
pears.
Notes:
• If you press D or — while a
frequency is held, the fre-
quency changes in the current
step increment.
• If you tune to a search skip
frequency, the display shows
LOCKOUT (see “Search Skip
Memory”).
Search Skip Memory
You can skip specified frequencies
during a limit, direct, or weather
search (see “Listening to the Weath-
er Band” on Page 25). This lets you
avoid unwanted frequencies or ones
you have already stored in a channel.
You can program up to 20 frequen-
cies to skip into the scanner’s memo-
ry.
To clear all the skip frequencies at
once, while in the search mode, hold
down L/O/SEARCH SKIP until the
scanner beeps 2 times.
22
Notes:
• If you program more than 20
Note: To listen to the monitor memo-
ries, the priority channel feature must
be turned off (see “Using Priority
Channels” on Page 26).
skip frequencies, each new fre-
quency replaces old ones, start-
ing from the first stored
frequency.
MOVING A FREQUENCY
FROM A MONITOR
MEMORY TO A
• You can select the skipped fre-
quency when the scanner is in
the hold mode. The scanner dis-
plays LOCKOUT when you
select a skipped frequency.
CHANNEL
MANUAL
1. Press
ning.
to stop the scan-
• If you skip all frequencies in the
weather band or within a search
range, the scanner sounds three
beeps and will not start search-
ing.
LISTENING TO
MONITOR MEMORIES
After you temporarily store frequen-
cies into the scanner’s monitor mem-
ories, you can listen to them by
2. Enter the channel number where
you want to store the monitor
PGM
frequency, then press
.
MANUAL MON
, then the
pressing
,
PROGRAM appears.
number for the monitor memory you
want to listen to.
23
3. Press MON, then enter the moni-
tor memory number that has the
frequency you want to store.
MON and the entered frequency
appear, and the channel number
blinks.
When you turn off a bank, the scan-
ner does not scan any of the 20
channels in the bank.
While scanning, press the number
key for the bank you want to turn on
or off. If the memory bank indicator is
on, the bank is turned on and the
scanner scans all channels within
that bank that are not locked out. If
the indicator is off, the scanner does
not scan any of the channels within
that bank.
4. Press ENTER. The scanner
stores the frequency into the
selected channel.
Notes:
• You can manually select any
channel in a bank, even if the
bank is turned off.
• You cannot turn off all banks.
There must be at least one
active bank.
SCANNING THE
STORED CHANNELS
To scan the stored channels, press
SCAN. Your scanner scans through
all the stored channels except the
ones you lock out (see “Locking Out
Channels” on Page 27).
MANUALLY
SELECTING A
CHANNEL
If necessary, readjust SQUELCH so
you do not hear the hissing sound
between transmissions.
You can continuously monitor a spe-
cific channel without scanning. This
is useful if you hear an emergency
broadcast on a channel and want to
hear all the details (even though
there might be periods of silence) or
if you want to monitor only a specific
channel or a locked-out channel.
TURNING CHANNEL-
STORAGE BANKS ON
AND OFF
To manually select a channel, press
MANUAL, enter the channel number,
then press MANUAL again.
You can set your scanner to scan
more efficiently by turning selected
channel storage banks on or off.
24
Your scanner searches through the
weather band and stops on an active
broadcast. If a broadcast is weak,
press WX again to continue to search
through the weather band.
You can press LIMIT to pause the
weather search, then press D or —
repeatedly to move forward or back-
ward through the channels. To con-
tinue the search, hold down LIMIT, D,
or — for more than 1 second.
If the scanner is scanning and stops
at the desired channel, press MANU-
AL once. Repeatedly press MANUAL
to step through the channels one at a
time.
If you tune to a search skip fre-
Note:
quency, the display shows LOCK-
OUT(see “Search Skip Memory” on
Page 22).
LISTENING TO THE
WEATHER BAND
Your scanner is preprogrammed with
the following weather frequencies.
162.400 MHz
162.425 MHz
162.450 MHz
162.475 MHz
162.500 MHz
162.525 MHz
162.550 MHz
To hear your local forecast and re-
gional weather information, simply
press WX. WXappears.
25
SPECIAL FEATURES
Note: If the scanner cannot find a pri-
ority channel, P CH LOCOUt ap-
pears when you turn on the priority
feature.
USING PRIORITY
CHANNELS
The priority feature lets you scan
through channels and still not miss
important or interesting calls on spe-
cific channels. You can program one
stored channel in each bank as a pri-
ority channel (up to 10 stored chan-
nels in total). As the scanner scans
the bank, if the priority feature is
turned on, the scanner checks the
priority channels every 2 seconds for
activity.
To confirm all priority channel num-
bers, press PGM, then repeatedly
press PRI/HYPER SEARCH to see the
priority channels.
To turn on the priority feature, press
PRI/HYPER SEARCH during scan-
ning. PRIORITYappears and every
2 seconds the scanner checks the
priority channel in each bank that is
turned on, starting from the lowest-
numbered to the highest-numbered
priority channel. If there is a trans-
mission on the priority channel, the
scanner tunes the transmission until
it stops.
The scanner automatically desig-
nates each bank’s first channel as its
priority channel. Follow these steps
to select a different channel as the
priority channel for a bank.
1. Press PGM.
The scanner does not check the
channel if it is in a bank which is
turned off or if the priority channel is
locked out.
2. Enter the channel number you
want to select as the priority
channel, then press PRI/HYPER
SEARCH.
appears to the left
P
of the channel number.
To turn off the priority feature, press
PRI/HYPER SEARCH. PRIORITY
disappears.
3. Repeat Steps 1–2 for the chan-
nel in each bank you want to
program as a priority channel.
26
• If the scanner is searching,
DELAY
DELAY appears and the scan-
ner automatically adds a 2-sec-
ond delay to every transmission
it stops on.
USING THE 2-SECOND
DELAY
press
during the search.
Many agencies use a two-way radio
system that might have a pause of
several seconds between a query
and a reply. To avoid missing a reply,
you can program a 2-second delay
into any of your scanner’s channels
or frequencies. Then, when the scan-
ner stops on the channel or frequen-
cy, DELAYappears and the scanner
continues to monitor the channel/fre-
quency for 2 seconds after the trans-
mission stops before it resumes
scanning or searching.
DELAY
To turn off delay, press
when
DELAYis displayed.
LOCKING OUT
CHANNELS
You can set your scanner to scan
more efficiently by locking out chan-
nels you do not want to monitor. This
is handy for locking out channels
where you stored a frequency with a
continuous transmission, such as a
weather channel.
You can program a 2-second delay in
any of these ways:
MANU-
To lock out a channel, press
AL
, enter the desired channel num-
MANUAL
PGM
ber, press
or
to select
L/O/SEARCH
so LOCKOUTappears.
the channel, then press
SKIP
• If the scanner is scanning and
stops on an active channel,
DELAY
quickly press
before it
starts to scan again. DELAY
appears.
• If the desired channel is not
selected, manually select the
DELAY
channel then press
.
DELAYappears
Note: You can still manually select
locked out channels.
27
To unlock a channel, manually select
the channel, then press L/O/SEARCH
SKIP so LOCKOUTdisappears.
To select the HyperSearch speed,
during a limit or direct search, press
PRI/HYPER SEARCH. SEARCHflash-
es during HyperSearch speed.
To unlock all channels, while the
scanner is scanning, select the
banks containing the locked chan-
nels you want to unlock, press MAN-
UAL, then hold down L/O/SEARCH
SKIP until the scanner beeps twice.
You can use HyperSearch
speed only in 5 kHz-step bands.
Note:
SKIPPING DATA
SIGNALS
CHANGING SCANNING
AND SEARCH SPEEDS
You can set the scanner to skip non-
modulated or data signals (such as
control signals for pagers or trunked
systems) when searching or scan-
ning.
The PRO-2048 has two scan and
three search speeds.
This feature does not work and
Note:
Type
Speed
DATA does not appear in the AM
mode. Also, the scanner might not
skip data signals that have varied
patterns of pauses and frequencies.
Normal Scan
12 channels/
second
HyperScan
50 channels/
second
Normal Search
50 steps/second
To skip data signals, press DATA.
DATAappears.
High Speed
Search
100 steps/
second
300 steps/
second (5 kHz
steps only)
HyperSearch
To change the scanning speed, dur-
ing scanning, press SPEED to switch
between normal and HyperScan
speeds. SCANflashes during Hyper-
Scan speed.
To turn off data skip, press DATA so
DATAdisappears.
To change the search speed, during
a limit, direct, or weather search,
press SPEED to switch between the
normal and high speed search
speeds. s or t flashes during high
speed search.
28
TURNING THE KEY
TONE ON OR OFF
Your scanner beeps each time you
press a key. Follow these steps to
turn off the key tone beep.
1. Turn off the scanner.
L/O/SEARCH SKIP
2. Hold down
,
then turn on the scanner. OFF
bEEPappears.
To turn on the beep, repeat these
steps. on bEEPappears.
29
A GENERAL GUIDE TO SCANNING
Reception of the frequencies covered by your scanner is mainly “line-of-sight.”
That means you usually cannot hear stations that are beyond the horizon.
GUIDE TO FREQUENCIES
US Weather Frequencies
162.400
162.425
162.450
162.475
162.500
162.525
162.550
Canadian Weather Frequencies
161.650
161.775
163.275
Note: These frequencies are not pre-programmed in the weather service bank
but can be manually programmed into a channel.
Ham Radio Frequencies
Ham radio operators often transmit emergency information when other means of
communication break down. The following chart shows the frequencies the scan-
ner receives that Ham radio operators normally use:
Wavelength (meters)
10–Meter
6–Meter
Frequencies (MHz)
29.000–29.700
50.000–54.000
2–Meter
70–cm
33–cm
144.000–148.000
420.000–450.000
902.000–928.000
Birdie Frequencies
Every scanner has birdie frequencies. Birdies are signals created inside the
scanner’s receiver. These operating frequencies might interfere with broadcasts
on the same frequencies. If you program one of these frequencies, you hear only
noise on that frequency. If the interference is not severe, you might be able to
turn SQUELCH clockwise to cut out the birdie.
30
The birdie frequencies on this unit to watch for are:
31.200 MHz
116.0375 MHz
132.1755 MHz
145.600 MHz
823.800 MHz
36.0500 MHz
120.1625 MHz
140.1900 MHz
163.2200 MHz
940.900 MHz
114.400 MHz
128.1750 MHz
145.195 MHz
813.400 MHz
To find the birdies in your scanner, begin by disconnecting the antenna and mov-
ing it away from the scanner. Make sure that no other nearby radio or TV sets
are turned on near the scanner. Use the search function and scan every frequen-
cy range from its lowest frequency to the highest. Occasionally, the searching will
stop as if it had found a signal, often without any sound. That is a birdie. Make a
list of all the birdies in your scanner for future reference.
GUIDE TO THE ACTION BANDS
United States Broadcast Bands
In the United States, there are several broadcast bands. The standard AM and
FM bands are probably the most well known. There are also four television audio
broadcast bands — the lower three transmit on the VHF band and the fourth
transmits on the UHF band.
Typical Band Usage
HF Band
10-Meter Amateur Band
High Range
29.00–29.70 MHz
29.70–29.90 MHz
VHF Band
Low Range
6-Meter Amateur
Aircraft
U.S. Government
2-Meter Amateur
High Range
30.00–50.00 MHz
50.00–54.00 MHz
108.00–136.00 MHz
138.00–144.00 MHz
144.00–148.00 MHz
148.00–174.00 MHz
31
UHF Band
U.S. Government
0.6-Meter Amateur
Low Range
406.00–420.00 MHz
420.00–450.00 MHz
450.00–470.00 MHz
470.00–806.00 MHz
851.00–856.00 MHz
856.00–861.00 MHz
861.00–866.00 MHz
866.00–869.00 MHz
896.00–940.00 MHz
940.00–950.00 MHz
FM-TV Audio Broadcast, Wide Band
Conventional Systems
Conventional/Trunked Systems
Trunked Systems
Public Safety
Private Trunked
General Trunked
UHF Band
10-Meter Amateur Band
High Range
29.00–29.70 MHz
29.70–29.90 MHz
VHF Band
Low Range
30.00–50.00 MHz
50.00–54.00 MHz
6-Meter Amateur
Aircraft
108.00–136.00 MHz
138.00–144.00 MHz
144.00–148.00 MHz
144.00–148.00 MHz
U.S. Government
2-Meter Amateur
2-Meter Amateur
32
Primary Usage
As a general rule, most of the radio activity is concentrated on the following fre-
quencies:
VHF Band
Activities
Frequencies
Government, Police, and Fire
Emergency Services
Railroad
153.785–155.980 MHz
158.730–159.460 MHz
160.000–161.900 MHz
UHF Band
Activities
Frequencies
Land-Mobile “Paired” Frequencies
Base Stations
Mobile Units
Repeater Units
Control Stations
450.000–470.000 MHz
451.025–454.950 MHz
456.025–459.950 MHz
460.025–464.975 MHz
465.025–469.975 MHz
Note: Remote control stations and mobile units operate at 5 MHz higher than
their associated base stations and relay repeater units.
SPECIFIED INTERVALS
Frequencies in different bands are accessible only at specific intervals. For ex-
ample:
Band Type
Specified Interval
VHF, HAM, and Government
All Others
Aircraft
5.0 kHz steps
12.5 kHz steps
25.0 kHz steps
33
BAND ALLOCATION
To help decide which frequency ranges to scan, use the following listing of the
typical services that use the frequencies your scanner receives. These frequen-
cies are subject to change, and might vary from area to area. For a more com-
plete listing, refer to the “Police Call Radio Guide Including Fire and Emergency
Services,” available at your local RadioShack store.
Abbreviations
Services
AIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Aircraft
BIFC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Boise (ID) Interagency Fire Cache
BUS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Business
CAP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Civil Air Patrol
CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Citizens Band
CCA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Common Carrier
CSB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Conventional Systems
CTSB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Conventional/Trunked Systems
FIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fire Department
HAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Amateur (Ham) Radio
GOVT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Federal Government
GMR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Mobile Radio
GTR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Trunked
IND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Industrial Services
(Manufacturing, Construction, Farming, Forest Products)
MAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Military Amateur Radio
MARI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maritime Limited Coast
(Coast Guard, Marine telephone,
Shipboard Radio, Private stations)
MARS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Military Affiliate Radio System
MED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Emergency/Medical Services
MIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .U.S. Military
MOV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Motion Picture/Video Industry
NEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .New Mobile Narrow
NEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Relay Press (Newspaper reporters)
OIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Oil/Petroleum Industry
POL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Police Department
PUB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Public Services
(Public Safety, Local Government, Forestry Conservation)
PSB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Public Safety
PTR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Private Trunked
ROAD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Road & Highway Maintenance
RTV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Radio/TV Remote Broadcast Pickup
TAXI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Taxi Services
34
TELB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Mobile Telephone
(Aircraft, Radio Common Carrier, Landline companies)
TELC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cordless Phones
TELM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Telephone Maintenance
TOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tow Trucks
TRAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Transportation Services
(Trucks, Tow Trucks, Buses, Railroad, Other)
TSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Trunked Systems
TVn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .FM-TV Audio Broadcast
USXX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Government Classified
UTIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power & Water Utilities
WTHR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Weather
HIGH FREQUENCY (HF)
10-Meter Amateur Band (28.0-29.7 MHz)
29.000–29.700 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .HAM
VERY HIGH FREQUENCY (VHF)
VHF Low Band (in 5 kHz steps)
29.700–29.790 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IND
29.900–30.550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL
30.580–31.980 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, PUB
32.000–32.990 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL
33.020–33.980 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS, IND, PUB
34.010–34.990 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL
35.020–35.980 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS, PUB, IND, TELM
36.000–36.230 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL
36.250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil Spill Clean up
36.270–36.990 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL
37.020–37.980 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUB, IND
38.000–39.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL
39.020–39.980 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUB
40.000–42.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL, MARI
42.020–42.940 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . POL
42.960–43.180 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IND
43.220–43.680 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELM, IND, PUB
43.700–44.600 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TRAN
44.620–46.580 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . POL, PUB
46.600–46.990 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, TELC
47.020–47.400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUB
47.420 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . American Red Cross
35
47.440–49.580 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IND, PUB
49.610–49.990 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MIL, TELC
6-Meter Amateur Band
50.00–54.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HAM
Land Mobile Service Band
72.00–76.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .LMS
FM Radio Broadcast, Wide Band
88.00–108.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .FM
Aircraft Band
108.000–121.490 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AIR
121.500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AIR Emergency
121.510–136.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AIR
U.S. Government Band
138.000–144.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL
2-Meter Amateur Band
144.000–148.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HAM
VHF High Band
148.050–150.345 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CAP, MAR, MIL
150.775–150.790 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MED
150.815–150.965 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TOW
150.980 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Oil Spill Clean up
150.995–151.130 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ROAD
151.145–151.475 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .POL
151.490–151.955 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IND, BUS
151.985 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TELM
152.0075 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MED
152.030–152.240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELB
152.270–152.465 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, TAXI
152.480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BUS
152.510–152.840 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELB
152.870–153.020 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, MOV
153.035–153.725 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IND, OIL, UTIL
153.740–154.445 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PUB, FIRE
154.490–154.570 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IND, BUS
154.585 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil Spill Clean-Up
154.600–154.625 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BUS
36
154.655–156.240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MED, ROAD, POL, PUB
156.255 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OIL
156.275–157.425 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MARI
157.450 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MED
157.470–157.515 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TOW
157.530–157.725 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IND, TAXI
157.740 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BUS
157.770–158.100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELB
158.130–158.460 . . . . . . . . . . . . . . . . . . . . . . . . . . BUS, IND, OIL, TELM, UTIL
158.490–158.700 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELB
158.730–159.465 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . POL, PUB, ROAD
159.480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OIL
159.495–161.565 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TRAN
161.580 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OIL
161.600–162.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MARI, RTV
162.0125–162.35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL, USXX
162.400–162.550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WTHR
162.5625–162.6375 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL, USXX
162.6625 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MED
162.6875–163.225 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL, USXX
163.250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MED
163.275–166.225 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL, USXX
166.250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, RTV, FIRE
166.275–169.400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GOVT, BIFC
169.445 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Wireless Mikes
169.500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GOVT
169.505 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Wireless Mikes
169.55–169.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL, USXX
170.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BIFC
170.025–170.150 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, RTV, FIRE
170.175–170.225 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GOVT
170.245–170.305 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Wireless Mikes
170.350–170.400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, MIL
170.425–170.450 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BIFC
170.475 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUB
170.4875-173.175 . . . . . . . . . . . . . . . . . . . . . . . . . GOVT, PUB, Wireless Mikes
173.225–173.375 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MOV, NEWS, UTIL
173.3875–173.5375 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MIL
173.5625–173.5875 . . . . . . . . . . . . . . . . . . . . . . . . . . MIL Medical/Crash Crews
173.60–173.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GOVT
37
Ultra High Frequency (UHF) (300 MHz–3 GHz)
U. S. Government Band
406.125–419.975 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GOVT, USXX
70-cm Amateur Band
420.000–450.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HAM
Low Band
450.050–450.925 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .RTV
451.025–452.025 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IND, OIL, TELM, UTIL
452.0375–453.00 . . . . . . . . . . . . . . . . . . . . . . . .IND, TAXI, TRAN TOW, NEWS
453.0125–453.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PUB
454.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OIL
454.025–454.975 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TELB
455.050–455.925 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .RTV
457.525–457.600 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BUS
458.025–458.175 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MED
460.0125–460.6375 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FIRE, POL, PUB
460.650–462.175 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BUS
462.1875–462.450 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BUS, IND
462.4625–462.525 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IND, OIL, TELM, UTIL
462.550–462.725 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GMR
462.750–462.925 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BUS
462.9375–463.1875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MED
463.200–467.925 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BUS
FM-TV Audio Broadcast, UHF Wide Band
(Channels 14 through 69 in 6 MHz steps)
475.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Channel 14
481.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Channel 15
487.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Channel 16
.
.
.
.
.
.
805.750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Channel 69
Note: Some cities use the 470–512 MHz band for land/mobile service.
Conventional Systems Band—Locally Assigned
851.0125–855.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CSB
38
Conventional/Trunked Systems Band—Locally Assigned
856.0125–860.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CTSB
Trunked Systems Band—Locally Assigned
861.0125–865.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TSB
Public Safety Band—Locally Assigned
866.0125–868.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PSB
Common Carrier
869.010–894.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CCA
Private Trunked
935.0125–939.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PTR
General Trunked
940.0125–940.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GTR
FREQUENCY CONVERSION
The tuning location of a station can be expressed in frequency (kHz or MHz) or
in wavelength (meters). The following information can help you make the neces-
sary conversions.
1 MHz (million) = 1,000 kHz (thousand)
To convert MHz to kHz, multiply the number of megahertz by 1,000:
9.62 (MHz) x 1000 = 9620 kHz
To convert from kHz to MHz, divide the number of kilohertz by 1,000:
2780 (kHz) ÷ 1000 = 2.780 MHz
To convert MHz to meters, divide 300 by the number of megahertz:
300 ÷ 7.1 MHz = 42.25 meters
39
TROUBLESHOOTING
If you have problems, here are some suggestions that might help. If they do not,
take your scanner to your local RadioShack store for assistance.
PROBLEM
POSSIBLE CAUSE
REMEDY
Scanner is on but will not
scan.
SQUELCH is not correctly
adjusted.
Adjust SQUELCH clockwise.
Only one channel or no
channels are stored.
Store frequencies into more
than one channel.
The scanner’s display
must be reset.
Reset the scanner’s display
(see “Resetting the Scan-
ner’s Display” on Page 10).
Scanner is totally inopera- No power.
tive.
Make sure the scanner is
plugged into a working AC
or DC outlet.
The AC or DC adapter is
not connected.
Be sure the adapter’s barrel
plug is fully plugged into the
DC 12V jack.
The scanner’s display
dims.
The AC or DC adapter is
not providing the required adapter is set to provide the
Make sure the AC or DC
voltage.
required voltage.
Keypad does not work or
display randomly
changes.
The scanner’s display
must be reset.
Reset the scanner’s display
(see “Resetting the Scan-
ner’s Display” on Page 10).
Poor or no reception.
An antenna is not con-
nected or connected
incorrectly.
Make sure an antenna is
correctly connected to the
scanner.
Programmed frequencies
are the same as “birdie”
frequencies.
Avoid programming fre-
quencies listed under
“Birdie Frequencies” on
Page 30, or only listen to
them manually.
Errorappears.
Programming error.
Reprogram the frequency
correctly, including the deci-
mal point.
While scanning In the
scan mode, the scanner
locks on frequencies that
have an unclear transmis-
sion.
Programmed frequencies
are the same as “birdie”
frequencies.
Avoid programming fre-
quencies listed under
“Birdie Frequencies” on
Page 30, or only listen to
them manually.
40
CARE AND MAINTENANCE
Your RadioShack PRO-2048 200-Channel Programmable Home Scanner is an
example of superior design and craftsmanship. The following suggestions will
help you care for your scanner so you can enjoy it for years.
Keep the scanner dry. If it gets wet, wipe it dry immediately. Liquids
might contain minerals that can corrode the electronic circuits.
Handle the scanner gently and carefully. Dropping it can damage
circuit boards and cases and can cause the scanner to work improp-
erly.
Use and store the scanner only in normal temperature environ-
ments. Temperature extremes can shorten the life of electronic de-
vices and distort or melt plastic parts.
Keep the scanner away from dust and dirt, which can cause prema-
ture wear of parts.
Wipe the scanner with a damp cloth occasionally to keep it looking
new. Do not use harsh chemicals, cleaning solvents, or strong de-
tergents to clean the scanner.
Modifying or tampering with the scanner’s internal components can cause a mal-
function and might invalidate your scanner’s warranty and void your FCC autho-
rization to operate it. If your scanner is not performing as it should, take it to your
local RadioShack store for assistance.
41
SPECIFICATIONS
Frequency Coverage:
VHF-Lo ............................................................... 29-50 MHz (in 5 kHz steps)
Ham ................................................................... 50-54 MHz (in 5 kHz steps)
Aircraft ................................................ 108-136.975 MHz (in 12.5 kHz steps)
Government ................................................... 137-144 MHz (in 5 kHz steps)
Ham ............................................................... 144-148 MHz (in 5 kHz steps)
VHF-Hi ........................................................... 148-174 MHz (in 5 kHz steps)
Ham/Government ...................................... 406-450 MHz (in 12.5 kHz steps)
UHF-Standard ........................................... 450-470 MHz (in 12.5 kHz steps)
UHF-T (Television) .................................... 470-512 MHz (in 12.5 kHz steps)
UHF-Hi .................................. 806.0000 - 823.9375 MHz (in 12.5 kHz steps)
UHF-Hi .................................. 851.0000 - 868.9375 MHz (in 12.5 kHz steps)
UHF-Hi ........................................... 896.1125 - 956 MHz (in 12.5 kHz steps)
Channels of Operation .................... 200 channels in any combination of bands
Sensitivity:
AM: 20 dB Signal-to-Noise Ratio at 60% modulation
108–136.975 MHz ............................................................................... 1.5 µV
FM: 20 dB Signal-to-Noise Ratio at 3 kHz deviation
29–54 MHz .......................................................................................... 0.5 µV
137–174 MHz ...................................................................................... 0.6 µV
406–512 MHz ...................................................................................... 0.6 µV
806–956 MHz ...................................................................................... 0.8 µV
Scanning Rate:
Normal ................................................................................ 12 channels/sec
Hyper .................................................................................. 50 channels/sec
Search Speed:
Normal ...................................................................................... 50 steps/sec
High ......................................................................................... 100 steps/sec
Hyper ................................................. 300 steps/sec (only 5 kHz step band)
Delay Time ........................................................................................ 2 Seconds
IF Frequencies ........................................ 380.7 MHz, 10.85 MHz, and 450 kHz
Antenna Impedance ............................................................................. 50 Ohms
Audio Power ........................................................................ 1.3 Watts maximum
42
Built-In Speaker ................................... 21/4-Inch (57 mm), 8-ohm, dynamic type
Power Requirements .......................................................... AC 120 Volts, 60 Hz
Current Drain ................................................................ DC 230 mA (squelched)
DC 400 mA (full volume unsquelched)
Dimensions (HWD) ...................................................... 23/4 × 81/16 × 711/16 Inches
(70 × 205 × 195 mm)
Weight ..................................................................................................... 1.5 lbs
(680 g)
Specifications are typical; individual units might vary. Specifications are subject
to change and improvement without notice.
43
Limited One-Year Warranty
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 autho-
rized RadioShack franchisees and dealers. EXCEPT AS PROVIDED HEREIN, RadioShack MAKES NO EX-
PRESS WARRANTIES AND ANY IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE DURATION OF
THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. EXCEPT AS PROVIDED HEREIN, Ra-
dioShack SHALL HAVE NO LIABILITY OR RESPONSIBILITY TO CUSTOMER OR ANY OTHER PERSON
OR ENTITY WITH RESPECT TO ANY LIABILITY, LOSS OR DAMAGE CAUSED DIRECTLY OR INDI-
RECTLY BY USE OR PERFORMANCE OF THE PRODUCT OR ARISING OUT OF ANY BREACH OF THIS
WARRANTY, INCLUDING, BUT NOT LIMITED TO, ANY DAMAGES RESULTING FROM INCONVE-
NIENCE, LOSS OF TIME, DATA, PROPERTY, REVENUE, OR PROFIT OR ANY INDIRECT, SPECIAL, IN-
CIDENTAL, OR CONSEQUENTIAL DAMAGES, EVEN IF RadioShack HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
Some states do not allow the limitations on how long an implied warranty lasts or the exclusion of incidental
or consequential damages, so the above limitations or exclusions may not apply to you.
In the event of a product defect during the warranty period, take the product and the RadioShack sales re-
ceipt as proof of purchase date to any RadioShack store. RadioShack will, at its option, unless otherwise
provided by law: (a) correct the defect by product repair without charge for parts and labor; (b) replace the
product with one of the same or similar design; or (c) refund the purchase price. All replaced parts and prod-
ucts, and products on which a refund is made, become the property of RadioShack. New or reconditioned
parts and products may be used in the performance of warranty service. Repaired or replaced parts and
products are warranted for the remainder of the original warranty period. You will be charged for repair or re-
placement of the product made after the expiration of the warranty period.
This warranty does not cover: (a) damage or failure caused by or attributable to acts of God, abuse, accident,
misuse, improper or abnormal usage, failure to follow instructions, improper installation or maintenance, al-
teration, lightning or other incidence of excess voltage or current; (b) any repairs other than those provided
by a RadioShack Authorized Service Facility; (c) consumables such as fuses or batteries; (d) cosmetic dam-
age; (e) transportation, shipping or insurance costs; or (f) costs of product removal, installation, set-up ser-
vice adjustment or reinstallation.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to
state.
RadioShack Customer Relations, Dept. W, 100 Throckmorton St., Suite 600, Fort Worth, TX 76102
We Service What We Sell
3/97
RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
UBZZ01272ZZ
10A7
Printed in the Philippines
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