20 418 PDF Radio Shack Pro 2045 VHF Scanner Recieverr Manual

Radio Shack_Pro-2045 VHF Scanner-Recieverr_Manual Radio Shack_Pro-2045 VHF Scanner-Recieverr_Manual

PRO-2045 to the manual 5df894fc-d30c-4d5e-b934-39185a9d6acb

User Manual: PDF T E X T F I L E S

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Page Count: 44

Cat. No. 20-418

OWNER’S MANUAL

PRO-2045

200-Channel Weather Alert Home Scanner

Please read before using this equipment.

20-418.fm Page 1 Wednesday, August 4, 1999 12:42 PM

2

FEATURES

Your RadioShack PRO-2045 200-

Channel Weather Alert Home Scan-

ner lets you in on all the action! This

scanner gives you direct access to

over 49,500 exciting frequencies used

by police and fire departments, ambu-

lance and transportation services, am-

ateur radio, as well as aircraft

communications, Citizen’s Band, and

commercial FM and television broad-

casts.

You can select up to 200 channels for

your scanner to scan, and you can

change your selections at any time. Its

rotary tuning control lets you easily se-

lect frequencies and channels. Plus,

when you turn on the weather alert

function, the scanner sounds an alarm

if the weather service transmits a

weather alert tone.

The secret to your scanner’s ability to

scan so many frequencies is its cus-

tom-designed microprocessor — a

tiny, built-in computer.

Your scanner has these features:

WX Alert — warns you of serious

weather conditions by sounding an

alarm if the weather service transmits

a weather alert tone.

Weather Band Auto Scan — scans

the preprogrammed weather frequen-

cies so you can stay informed about

current weather conditions.

H

y

perscan — scans programmed

channels at up to 50 channels per

second.

H

y

persearch — lets you set the scan-

ner to search at up to 300 steps per

second.

Rotar

y

Tuner — lets you easily tune

and select frequencies or channels.

Auto Sort — lets you scan the chan-

nels stored in a bank, in order from

lowest to highest frequency, to in-

crease scanning speed.

Auto Store — quickly finds and auto-

matically stores active frequencies

into the selected banks (but does not

store the frequency if it is already

stored in another channel).

Ten Channel-Stora

g

e Banks — let

you store 20 channels in each of 10

banks to group frequencies so you

can easily identify calls.

Frequenc

y

Transfer — lets you easi-

ly organize your frequencies by trans-

ferring them from one channel to

another.

Monitor Memories — let you store up

to 10 frequencies you locate during a

frequency search.

Limit Search — lets you search for

transmissions within a set range.

© 1996 Tandy Corporation.

All Rights Reserved.

RadioShack is a trademark used by Tandy Corporation.

Hyperscan and Hypersearch are registered trademarks used by Tandy Corporation.

20-418.fm Page 2 Wednesday, August 4, 1999 12:42 PM

3

Direct Search — lets you search for

transmissions starting from a frequen-

cy you specify.

Count Feature — lets you keep track

of how many times your scanner has

stopped on a channel.

Search Skip — lets you select up to

50 frequencies for the scanner to skip

during a search, so you can avoid fre-

quencies you have already discovered

or that have a continuous transmis-

sion.

Two-Second Scan Delay — delays

scanning for 2 seconds before moving

to another channel, so you can hear

more replies.

Data Skip — skips data signals (non-

modulated signals such as preamble

signals for pagers) during scan, limit

search, and direct search.

Lock-Out Function — prevents

channels you select from being

scanned.

Priority Channels — checks 10 spec-

ified channels every 2 seconds so you

do not miss important calls.

Automatic Modulation Mode — se-

lects the modulation method — nar-

row-band frequency modulation

(NFM) or amplitude modulation (AM)

— most often used for each band, and

lets you manually override the preset

mode.

Attenuator — reduces the scanner’s

sensitivity to help limit reception to

strong, nearby transmitters.

Memory Backup — keeps stored

channel frequencies in memory for up

to 3 days during a power loss.

CTCSS Option — with an optional

CTCSS tone circuit board, you can

use the Continuous Tone Coded

Squelch System (CTCSS) to selec-

tively listen to some business band

and amateur radio transmissions.

Backlit Display — lets you easily see

the indicators on the scanner’s dis-

play, even at night.

We recommend you record your scan-

ner’s serial number here. The number

is on the scanner’s back panel.

Serial Number: _________________

Your scanner has the following pre-

programmed weather channels:

• 162.4000 MHz (NFM)

• 162.4250 MHz (NFM)

• 162.4500 MHz (NFM)

• 162.4750 MHz (NFM)

• 162.5000 MHz (NFM)

• 162.5250 MHz (NFM)

• 162.5500 MHz (NFM)

20-418.fm Page 3 Wednesday, August 4, 1999 12:42 PM

4

Your scanner can receive all of these

bands:

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 eliminate the interference by:

• Moving your scanner away from

the receiver

• Connecting your scanner to an

outlet that is on a different electri-

cal circuit from the receiver

• Contacting a RadioShack store for

help

If you cannot eliminate the interfer-

ence, the FCC requires that you stop

using your scanner.

SCANNING LEGALLY

Your scanner covers frequencies

used by many different groups includ-

ing police and fire departments, ambu-

lance services, government agencies,

private companies, amateur radio ser-

vices, military operations, pager ser-

vices, 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 trans-

mission)

• Pager transmissions

• Any scrambled or encrypted

transmissions

According to the Electronic Communi-

cations Privacy Act (ECPA), you are

subject to fines and possible imprison-

ment for intentionally listening to, us-

ing, or divulging the contents of such a

transmission unless you have the con-

sent of a party to the conversation (un-

less such activity is otherwise illegal).

RadioShack encourages responsible,

legal scanner use.

Range

(MHz) Step

(kHz) Mode

29–54 5 NFM

108–136.975 12.5 AM

137–174 5 NFM

216–224.9875 12.5 NFM

225–399.9875 12.5 AM

400–512 12.5 NFM

806–823.9375 12.5 NFM

851–868.9375 12.5 NFM

896.1125–1,000 12.5 NFM

20-418.fm Page 4 Wednesday, August 4, 1999 12:42 PM

5

CONTENTS

Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Connecting Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Using Standard AC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Using Vehicle Battery Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Connecting an Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Telescoping Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Optional Outdoor Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Resetting the Scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Using the Feet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Testing Alert Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Testing Alert Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Testing the Weather Alert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Connecting an Earphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Listening Safely . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Traffic Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Connecting an Amplified Extension Speaker . . . . . . . . . . . . . . . . . . . . . . . . 12

Installing an Optional CTCSS Tone Board . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Understandin

g

Your Scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

A Look at the Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

A Look at the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Understanding Channel-Storage Banks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Channel-Storage Banks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Monitor Memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Turning On the Scanner/Setting Volume and Squelch . . . . . . . . . . . . . . . . . 19

Using the Rotary Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Storing Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Searching For and Temporarily Storing Active Frequencies . . . . . . . . . . . . . 20

Limit Search . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Direct Search . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Search Skip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Automatically Storing Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Listening to Monitor Memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Moving a Frequency from a Monitor Memory to a Channel . . . . . . . . . . . . . 24

Scanning Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Turning Channel-Storage Banks On and Off . . . . . . . . . . . . . . . . . . . . . 24

Locking Out Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Manually Selecting a Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Scanning the Weather Band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Weather Alert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Using the Weather Alert Standby Mode . . . . . . . . . . . . . . . . . . . . . . . . . 26

20-418.fm Page 5 Wednesday, August 4, 1999 12:42 PM

6

Special Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Changing Search Speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Using the Programmable Attenuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Using Auto Sort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Skipping Data Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Turning On or Off the Key Tone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Changing the Modulation Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Transferring a Frequency to Another Channel . . . . . . . . . . . . . . . . . . . . . . . 30

Transferring to an Empty Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Transferring to a Channel that has a Stored Frequency . . . . . . . . . . . . . 30

Exchanging Frequencies Between Two Programmed Channels . . . . . . 30

Using the Count Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Using CTCSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

CTCSS Tone Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Assigning a CTCSS Tone Frequency to a Channel . . . . . . . . . . . . . . . . 32

Changing or Deleting a CTCSS Tone Frequency for a Channel . . . . . . . 32

A General Guide to Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Guide to Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

National Weather Service Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Ham Radio Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Birdie Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Guide to the Action Bands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Typical Band Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Primary Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Specified Intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Band Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Frequency Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Care and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

20-418.fm Page 6 Wednesday, August 4, 1999 12:42 PM

7

PREPARATION

CONNECTING POWER

You can power your scanner from a

standard AC outlet using the supplied

AC adapter or from your vehicle’s bat-

tery using an optional DC power cord.

If a power failure occurs or if the pow-

er cord is disconnected, the scanner’s

memory backup circuit keeps informa-

tion in memory for up to 3 days.

Note: The memory backup circuit be-

gins to protect memory within a few

minutes after you plug in the scanner.

Using Standard AC Power

Warnin

g

: Do not use the AC adapter

with an extension cord unless the

blades can be fully inserted.

Cautions:

• The supplied AC adapter supplies

12 volts and delivers 500 milli-

amps. Its center tip is set to posi-

tive, and its plug properly fits the

scanner’s DC 12V jack. Using an

AC adapter that does not meet

these specifications could dam-

age the scanner or the adapter.

• Connect the adapter to the scan-

ner before you connect it to an AC

outlet. Disconnect the adapter

from the AC outlet before you dis-

connect it from the scanner.

• If you have difficulty inserting the

AC adapter’s plug, do not force it.

Turn it over and reinsert it.

Follow these steps to use AC power.

1. Insert the supplied AC adapter’s

barrel plug into the scanner’s DC

12V jack.

2. Plug the adapter’s power module

into a standard AC outlet.

Using Vehicle Battery Power

Use a DC power cord (not supplied),

such as RadioShack Cat. No. 270-

1533, to power your scanner in your

vehicle.

Cautions:

• The DC power cord you select

must supply 12 volts and deliver

at least 500 mA. Its center tip

must be positive, and its plug

must fit the scanner’s DC 12V jack.

The recommended power cord

meets these specifications. Using

a power cord that does not meet

these specifications could dam-

age the scanner or power cord.

• Connect the power cord to the

scanner before you plug it into

your vehicle. Disconnect the

power cord from the vehicle

before you disconnect it from the

scanner.

DC 12V

20-418.fm Page 7 Wednesday, August 4, 1999 12:42 PM

8

• If you use your scanner in your

vehicle with the engine running,

you might hear electrical noise

from the scanner. This is normal.

Note: Mobile use of this scanner is

unlawful or requires a permit in some

areas. Check the laws in your area.

Follow these steps to use vehicle bat-

tery power.

1. Insert the DC power cord’s barrel

plug into the scanner’s DC 12V

jack.

2. Plug the DC power cord’s ciga-

rette-lighter plug into your vehi-

cle’s cigarette-lighter socket.

CONNECTING AN

ANTENNA

You can connect either the supplied

telescoping antenna or an optional an-

tenna to your scanner.

Telescoping Antenna

The supplied telescoping antenna

helps your scanner receive strong lo-

cal signals. Follow these steps to in-

stall the supplied antenna.

1. Hold the antenna so it stands

straight up.

2. Gently push the antenna’s plug

onto the ANT jack on the scan-

ner’s back panel.

The antenna’s length affects recep-

tion. Adjust the antenna’s length as

follows for the best results.

Optional Outdoor Antenna

The supplied antenna is usually good

for strong, local signals. However, for

the best results in receiving weaker,

more distant signals on all bands, you

can attach an optional outdoor anten-

na (not supplied), such as a mobile,

telescoping, multi-band, or outdoor

base antenna.

Warning: When installing or removing

an outdoor antenna, follow all cautions

and warnings included with the anten-

na.

DC 12V

29–150 MHz Extend fully

150–174 MHz Extend only 3 seg-

ments

216–406 MHz Extend only 2 seg-

ments

406–1000 MHz Collapse Fully (only

1 segment extended)

ANT

20-418.fm Page 8 Wednesday, August 4, 1999 12:42 PM

9

Note: Always use 50-ohm coaxial ca-

ble to connect an outdoor antenna to

your scanner. For lengths under 50

feet, use RG-58 or RG-8/M coaxial ca-

ble. For lengths over 50 feet, use RG-

8, low-loss coaxial cable. If the coaxial

cable’s connector does not fit the ANT

jack, you might also need an adapter.

Your local RadioShack store sells a

complete line of outdoor antennas,

adapters, BNC connectors, and

mounting hardware.

For the best performance, consider

the following when deciding on an out-

door antenna and its location:

• The location of the external

antenna should be as high as pos-

sible.

• The external antenna and

antenna cable should be as far

away as possible from sources of

electrical noise (appliances, other

radios, and so on).

• The external antenna should be

vertical.

Mount the antenna following the in-

structions supplied with the antenna

and its mounting hardware, then route

the antenna cable to the scanner and

connect it to the ANT jack on the back

of the scanner.

RESETTING THE

SCANNER

If the scanner’s display locks up or

does not work properly after you con-

nect power or after a power surge, you

might need to reset the scanner.

Caution: This procedure clears all the

information you have programmed

into the scanner. Use this procedure

only when you are sure your scanner

is not working properly.

1. Turn off the scanner.

2. While you press and hold down 2

and 9, turn on the scanner.

USING THE FEET

To tilt the display for the best viewing

angle and to provide the best traction,

pull down on the scanner’s feet so

they lock into place.

ANT

20-418.fm Page 9 Wednesday, August 4, 1999 12:42 PM

10

TESTING ALERT

OPERATION

For your scanner’s weather alert func-

tion to be effective, you must place the

scanner:

• Where it can receive an emer-

gency alert broadcast (see “Test-

ing Alert Reception” on this page)

• Where you can hear its alert tone

(See “Testing the Weather Alert”

on Page 11).

Once you determine a location that

meets these two conditions, leave the

scanner there for the best protection.

Testing Alert Reception

The fact that you get clear voice re-

ception or that the tone sounds when

you test the weather alert does not

guarantee that an emergency alert

broadcast will trigger your scanner’s

alert tone. Also, if you are in a

fringe

area, your scanner might be triggered

by a broadcast in one area, but not be

triggered if you place it somewhere

else (even close by).

To test for actual reception, your radio

must receive a test or emergency alert

broadcast. The National Weather Ser-

vice (NWS) broadcasts a test alert ev-

ery week on Wednesday between 11

AM and 12 Noon. To find out the spe-

cific test schedule in your area, con-

tact your local National Oceanic and

Atmospheric Administration (NOAA)

or National Weather Service office.

These offices are usually listed in the

telephone book under “US Govern-

ment, Department of Commerce.”

To verify that your scanner receives

the test alert properly, set the scanner

to the weather alert standby mode

(see “Using the Weather Alert Stand-

by Mode” on Page 25) during the time

when the test alert is broadcast in your

area.

If the test alert broadcast does not trig-

ger your scanner’s tone, you are out of

range of the broadcast.

Note: If you use your scanner’s

weather alert feature when you travel,

you cannot guarantee that an emer-

gency alert broadcast will trigger the

scanner in all areas.

Notes for Weather Alerts:

• To ensure your scanner will sound

the alert tone when it receives an

emergency signal, keep the

antenna fully extended at all

times.

• If severe weather threatens, do

not wait for an alert tone; turn on

your scanner and monitor the lat-

est weather information.

20-418.fm Page 10 Wednesday, August 4, 1999 12:42 PM

11

Testing the Weather Alert

Follow these steps to test the weather

alert — to hear how it sounds and en-

sure that the circuitry is working.

Note: This test does not ensure that

your scanner will sound an alert when

the weather service transmits an

emergency signal (see “Weather

Alert” on Page 25). Proper operation

is affected by the strength of the

weather service’s signal.

1. Press WX.

2. When the scanner stops on a

weather channel, press ALERT.

ALERT appears on the display.

3. Press and hold PRIORITY for more

than 2 seconds until the scanner

sounds a loud alarm.

To turn off the alarm, press ALERT or

WX.

CONNECTING AN

EARPHONE

For private listening, plug an earphone

or mono headphones’ 1/8-inch plug

into the jack on the front of the

scanner. This disconnects the internal

speaker.

Note: Your local RadioShack store

has a wide selection of earphones and

headphones.

Listening Safely

To protect your hearing, follow these

guidelines when you use an earphone

or headphone.

• Do not listen at extremely high

volume levels. Extended high-vol-

ume listening can lead to perma-

nent hearing loss.

• Set the volume to the lowest set-

ting before you begin listening.

After you begin listening, adjust

the volume to a comfortable level.

• 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.

20-418.fm Page 11 Wednesday, August 4, 1999 12:42 PM

12

Traffic Safety

Do not wear an earphone or head-

phones while operating a motor vehi-

cle. This can create a traffic hazard

and can 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.

CONNECTING AN

AMPLIFIED EXTENSION

SPEAKER

In a noisy area, an amplified extension

speaker might provide more comfort-

able listening. Plug the speaker ca-

ble’s 1/8-inch (3.5 mm) mini plug into

the scanner’s jack. This discon-

nects the internal speaker.

Note: RadioShack stores sell an am-

plified communications extension

speaker.

INSTALLING AN

OPTIONAL CTCSS

TONE BOARD

The scanner’s CTCSS (Continuous

Tone Control Squelch System) feature

lets you choose to listen only to trans-

missions that transmit one of 38 stan-

dard CTCSS tones. To use CTCSS,

you must install an optional CTCSS

tone board (Cat. No. 20-0031).

Cautions:

• Make sure the scanner is off and

disconnect the power before you

install a CTCSS tone board.

• Discharge static electricity buildup

by touching a metal object before

you open the scanner.

1. Use a Phillips screwdriver to

remove the two side screws on

the scanner’s top cover and three

screws on the bottom.

Caution: The scanner’s speaker

is attached to the top cover and

the circuit board. Use care when

you remove the top cover to not

damage the speaker or its con-

nector.

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13

2. Remove the scanner’s top cover.

3. Gently plug the CTCSS board into

sockets J9 and J10 on the top of

the scanner’s circuit board.

4. Replace the scanner’s top cover,

then replace the two side screws

and three bottom screws.

Note: For information about using

CTCSS, see “Using CTCSS” on

Page 30.

CTCSS BORD

CTCSS Board

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14

UNDERSTANDING YOUR SCANNER

A LOOK AT THE KEYBOARD

A quick glance at this section should help you understand each key’s function(s).

VOLUME — rotate to turn the scanner

on or off and adjust the volume.

SQUELCH — rotate to adjust the

squelch.

AUTO — lets you automatically pro-

gram frequencies into banks; sets the

the scanner to scan banks from the

lowest to the highest frequency.

H/S-PRIORITY — sets and turns on

and off priority for a particular channel;

turns on and off Hypersearch.

REVIEW — lets you review locked-out

channels or search skip memory.

TRANSFER — transfers the contents

of a channel to an empty or desired

channel, or exchanges the contents of

two channels.

MODE — selects the modulation mode

(AM and FM) function.

DATA — turns on or off data skip.

ATT — turns on or off the attenuator to

let you limit reception to strong, local

transmitters.

ALERT — sets the scanner to the

weather alert mode.

COUNT — sets the scanner to display

the number of times the scanner de-

tected a transmission on a channel

since you turned the scanner on.

CTCSS — lets you use the optional

CTCSS mode if you installed a

CTCSS tone board.

WX — starts scanning the weather fre-

quencies.

LIMIT — starts a limit search.

CLEAR — clears an incorrect entry.

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15

Number Keys — each key has a sin-

gle digit with a range of numbers print-

ed above it. The single digits are used

to enter the number of a channel or

frequency. The range of numbers (21–

40, for example) indicates the chan-

nels that make up a memory bank.

See “Understanding Channel-Storage

Banks” on Page 17.

• — enters a decimal point when you

set a frequency.

E — enters the frequency when you

program channels.

s and t — select the search direction.

SCAN — scans through programmed

channels.

MANUAL — stops scanning and lets

you directly enter a channel number.

PROGRAM — programs frequencies

into channels.

MONITOR — accesses the 10 monitor

memories. See “Moving a Frequency

from a Monitor Memory to a Channel”

on Page 23.

DELAY — programs a 2-second delay

for the selected channel and turns on

or off the delay during a limit or direct

search or weather scan.

LOCKOUT-S/S — lets you lock out a

selected channel, or skip a specified

frequency during a limit or direct

search.

FREQ/CHAN-LOCK — selects the rota-

ry tuner’s mode — frequency tuning,

channel tuning, or locked.

Rotary Tuner — turn to tune through

channels or frequencies. Turn the ro-

tary tuner faster to increase the tuning

speed.

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16

A LOOK AT THE DISPLAY

The display has several indicators that show the scanner’s current operating mode.

A good look at the display will help you understand how your scanner operates.

MON — appears during a search or

when you listen to a monitor memory.

The number to the right of this shows

the current monitor memory number.

See “Listening to Monitor Memories”

on Page 23.

FREQ, CHAN, LOCK — shows the

rotary tuner’s current setting.

BANK — shows which channel-

storage banks are turned on. See “Un-

derstanding Channel-Storage Banks”

on Page 17.

HYPER — appears when you scan

channels or when the scanner is in the

Hypersearch mode during limit

search, direct search, and auto store.

AUTO — appears when the scanner is

in the auto store mode or when the

auto sort function is turned on.

COUNT — appears when you use the

scanner’s count feature.

CTCSS — appears when the CTCSS

feature is turned on.

DATA — appears when you turn on

the data skip feature.

FM/AM — shows the current modula-

tion mode; flashes when you override

the default mode.

P — appears when you listen to a pri-

ority channel.

CH — digits that precede this indicator

show which of the 200 channels the

scanner is tuned to.

ATT — appears when the attenuator

is turned on.

MHz — the large digits that precede

this indicator show which frequency

the scanner is tuned to.

SCAN — appears when you scan

channels.

MAN — appears when you manually

select a channel.

PGM — appears while you program

frequencies into the scanner’s chan-

nels.

PRI — appears when you set the

scanner to scan the selected priority

channels every 2 seconds.

20-418.fm Page 16 Wednesday, August 4, 1999 12:42 PM

17

L/O — appears when you manually

select a locked channel or a skipped

frequency.

DLY — appears when you program a

channel for a 2-second delay or when

you listen to a channel that has been

programmed with the delay feature.

Also, the indicator appears when you

turn on the delay feature during a limit

or direct search or weather scan.

WX — appears when the scanner is

searching the weather band frequen-

cies.

ALERT — appears when the scanner

is set to respond to a weather alert

tone.

s and t — indicate the search direc-

tion.

SEARCH — appears during a limit

search (-L- also appears), direct fre-

quency search (-d- also appears),

weather frequency search, auto store

mode, hold direct search (-h- also

appears), and hold limit search (-H-

also appears).

UNDERSTANDING

CHANNEL-STORAGE

BANKS

You can store up to 210 frequencies

into your scanner’s memory. You

store each frequency into either a

memory called a channel, or a tempo-

rary memory called a monitor. This

scanner has 200 channel memories

and 10 monitor memories.

Channel-Storage Banks

To make it easier to identify and select

the channels you want to listen to,

channels are divided into 10 channel-

storage banks of 20 channels each.

Use each channel-storage bank to

group frequencies, such as the police

department, the fire department, am-

bulance services, or aircraft (see

“Guide to the Action Bands” on

Page 34).

For example, the police department

might use four frequencies, one for

each side of town. You could program

the police frequencies starting with

Channel 1 (the first channel in Bank 1)

and then program fire department fre-

quencies starting with Channel 21 (the

first channel in Bank 2).

MONITOR MEMORIES

The scanner also has 10 monitor

memories. You can use these memo-

ries to temporarily store frequencies

while you decide whether or not to

save them into channels. This is

handy for quickly storing an active fre-

quency when you search through an

entire band. See “Searching For and

Temporarily Storing Active Frequen-

cies” on Page 19.

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18

OPERATION

TURNING ON THE

SCANNER/SETTING

VOLUME AND SQUELCH

1. Rotate VOLUME 1/4 turn clockwise

to turn on the scanner.

2. Rotate SQUELCH fully counter-

clockwise.

3. Slowly turn SQUELCH clockwise

until the hissing stops.

Note: To hear a weak or distant sta-

tion, turn SQUELCH counterclockwise.

You might hear hissing, but you will

not miss any transmissions. If you turn

SQUELCH too far counterclockwise,

the scanner does not search or scan.

USING THE ROTARY

CONTROL

The rotary control has three modes

that you select using the FREQ/CHAN-

LOCK button. To select the control’s

mode, repeatedly press FREQ/CHAN-

LOCK until the scanner displays the

desired mode.

FREQ — the rotary control steps

through frequencies during a search.

CHAN — the rotary control steps

through the programmed channels.

LOCK — the rotary control does not

operate. Use this setting to help pre-

vent accidentally changing the chan-

nel or frequency.

STORING FREQUENCIES

You can store up to 200 frequencies

into your scanner’s channels. Good

frequency references are Ra-

dioShack’s “Police Call Guide includ-

ing Fire and Emergency Services,”

“Official Aeronautical Frequency Di-

rectory,” and “Maritime Frequency Di-

rectory.” These directories are

updated every year, so be sure to get

a current copy.

If you do not have a frequency refer-

ence for your area, you can use a limit

or direct search to find transmissions.

See “Searching For and Temporarily

Storing Active Frequencies” on

Page 19 or “Guide to the Action

Bands” on Page 34.

Follow these steps to manually store

frequencies.

1. Press PROGRAM. PGM appears

on the display.

2. Enter the number for the channel

where you want to store a fre-

quency.

Note: You can enter the channel

number using any of the following

methods:

• Use the number keys to enter

the channel number, then press

PROGRAM.

•Press

PROGRAM to increment

the channel number one step at

a time.

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19

•Press

FREQ/CHAN-LOCK until

the CHAN indicator appears.

Turn the rotary tuner to select

the desired channel.

3. Enter a frequency (including the

decimal point).

4. Press E to store the frequency.

Notes:

• If you made a mistake in Step

3, the scanner displays Error

and beeps three times. Press

CLEAR, then proceed again

from Step 3.

• Your scanner rounds frequen-

cies down to the next valid fre-

quency. For example, if you

enter 151.473, the scanner

accepts this as 151.470.

5. Repeat Steps 2-4 to program

more channels.

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.

Limit Search

A limit search lets you search for ac-

tive transmissions within a specified

range of frequencies.

Note: You can use the scanner’s de-

lay feature during a limit search (see

“Delay” on Page 26).

Follow these steps to search for active

frequencies.

1. Press PROGRAM, then LIMIT. Lo

and a frequency appear on the

display.

2. Using the number keys, enter the

lowest frequency (including the

decimal point) you want to search,

then press E.

Notes:

• To use the rotary tuner to enter

the frequency, turn it clockwise

or counterclockwise until the

desired frequency appears,

then press E.

• If you enter an invalid fre-

quency, the scanner displays

Error. To correct this, simply

repeat the step.

3. Press LIMIT. Hi and a frequency

appear on the display.

4. Using the number keys or the

rotary tuner, enter the highest fre-

quency you want to search, then

press

E.

5. Press s to search up from the

lower to the upper limit, or press t

to search down from the upper to

the lower limit. –L–, SEARCH,

and s or t appear, and the next

available monitor memory flashes

on the display.

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20

6. When the scanner finds a trans-

mission, you can:

• Store the displayed frequency

into the current monitor memory

— quickly press MONITOR.

• Lock out the frequency so the

scanner does not stop on it

again — press S/S. The scan-

ner resumes searching.

• Continue the search without

storing it or locking it out —

press

s or t.

• Hold the scanner on the fre-

quency — press LIMIT or turn

the rotary tuner either way one

click. -H- appears.

Notes:

• You can press s or t while the

scanner displays -H- to step

through the frequencies toward

the upper or lower limits.

• If you tune to a search skip fre-

quency, the scanner displays

L/O (see “Search Skip” on

Page 21).

• If you program all frequencies

within a limit search range as

search skip frequencies, the

scanner goes to the hold mode.

-H- appears on the display.

• During the limit search, you can

change the modulation (NFM or

AM). See “Changing the Modu-

lation Mode” on Page 28.

Press LIMIT again or press and

hold

s or t for more than 1 second

to resume the limit search.

Direct Search

A direct search lets you specify a

starting frequency, then search for ac-

tive transmissions above or below the

specified frequency.

Note: You can use the delay feature

during a direct search (see “Delay”).

1. Press MANUAL.

2. Using the number keys, enter the

frequency (including the decimal

point) you want to start the search

from; or, enter the channel num-

ber containing the starting fre-

quency and press MANUAL or

PROGRAM to select the channel.

3. Press s to search up or t to search

down starting from the specified

frequency. -d-, SEARCH, and s

or t appear, and the next available

monitor memory flashes.

Note: If you enter an invalid fre-

quency, Error appears on the

display. To correct this, repeat

Steps 2 and 3.

4. When the scanner finds an active

frequency, you can do one of the

following:

• Store the frequency into the

current monitor memory —

quickly press MONITOR.

• Lock out the frequency so the

scanner does not stop on it

again — press S/S. The scan-

ner resumes searching.

20-418.fm Page 20 Wednesday, August 4, 1999 12:42 PM

21

• Continue the search — press s

or t.

• Hold the scanner on the fre-

quency — press LIMIT or turn

the rotary tuner either way one

click. -h- appears.

Notes:

• You can press s or t during the

hold to step through the fre-

quencies toward the upper or

lower limits.

• If you tune to a search skip fre-

quency, the scanner displays

L/O (see “Search Skip” on

Page 21).

• During the direct search, you

can change the modulation

mode (NFM or AM). See

“Changing the Modulation

Mode” on Page 28.

Press LIMIT again or press and

hold

s or t for more than 1 second

to resume the direct search.

Search Skip

You can skip specified frequencies

during a limit or direct search. This lets

you avoid frequencies that have data

tones or are already stored in a chan-

nel. You can program up to 50 fre-

quencies for the scanner to skip.

Notes:

• If you program more than 50 skip

frequencies, each new frequency

replaces one you already stored.

• You can select the skipped fre-

quency when the scanner is in the

hold mode. The scanner displays

L/O when you select a skipped

frequency.

To skip a frequency, press S/S when

the scanner stops on the frequency

during a limit or direct search.

Follow these steps to see which skip

frequencies you have stored.

1. During a limit or direct search,

press

REVIEW. The first skip fre-

quency appears on the display.

2. Use s, t, or REVIEW to review the

other skip frequencies.

To remove a skip frequency, select

the skip frequency you want to clear

by using s, t, or REVIEW, then press S/

S.

To clear all the skip frequencies at

once, while searching for frequencies,

press and hold S/S until the scanner

beeps twice.

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22

AUTOMATICALLY

STORING FREQUENCIES

You can have your scanner automati-

cally store active frequencies into

empty channels within the banks you

specify.

1. Press PROGRAM then LIMIT. Lo

and the lower limit frequency

appears.

2. Enter the lower limit using the

number keys or use the rotary

tuner to enter the lower limit of the

frequency range you want to

search, then press E.

Note: If you enter an invalid fre-

quency in Step 2 or 4, the scanner

displays Error. Simply repeat

the step.

3. Press LIMIT. Hi appears.

4. Enter the upper limit using the

number keys or use the rotary

tuner to enter the upper limit of the

frequency range you want to

search, then press E;.

5. Press AUTO. AUTO appears and

the numbers 1–10 flash on the

display.

6. Using the number keys, enter the

numbers of the banks where you

want to store frequencies. The

selected banks’ indicators appear

steadily in the display. All other

banks’ indicators flash.

Notes:

• To select bank 10, press 0.

• If you select a bank that does

not contain an empty channel,

the scanner beeps and FULL

appears.

• To deselect the bank, press the

bank number again.

7. Press s to search from the lower

to the upper limit, or t to search

from the upper to lower limit. The

current bank’s indicator starts

blinking. The current channel also

appears.

When the scanner finds a trans-

mission, it checks to see if the fre-

quency is stored in any other

channel. If not, the scanner stores

the frequency, then continues

searching for more transmissions.

8. To stop storing frequencies, press

MANUAL.

When all channels fill, the scanner

beeps twice and End appears. Press

MANUAL to display the channel where

the last frequency was stored.

20-418.fm Page 22 Wednesday, August 4, 1999 12:42 PM

23

LISTENING TO MONITOR

MEMORIES

Once you store frequencies into moni-

tor memories using a direct or limit

search or weather scan, you can listen

to a monitor memory by pressing

MANUAL, MONITOR, and then the

number for the monitor memory you

want to listen to.

Note: To listen to the monitor memo-

ries, the priority channel feature must

be turned off.

MOVING A FREQUENCY

FROM A MONITOR

MEMORY TO

A CHANNEL

1. Press PROGRAM.

2. Enter the channel number where

you want to store the frequency,

then press PROGRAM. PGM

appears on the display.

3. Press MONITOR. Use the number

keys or turn the rotary tuner to

select the monitor memory’s num-

ber. The channel number flashes

and the frequency appears.

4. Press E. The scanner stores the

frequency into the selected chan-

nel.

SCANNING CHANNELS

To begin scanning channels, press

SCAN. The scanner scans through all

non-locked channels in the activated

banks. (See “Turning Channel-Stor-

age Banks On and Off” below and

“Locking Out Channels” on Page 25.)

Note: If the scanner does not scan, be

sure you have set SQUELCH correctly.

Turning Channel-Storage

Banks On and Off

You can turn each channel-storage

bank on and off. When you turn off a

bank, the scanner does not scan any

of the 20 channels in that bank.

While scanning, press the number key

corresponding to the bank you want to

turn on or off. If the memory bank

number at the top of the display is on,

the bank is turned on and the scanner

scans all channels within that bank

that are not locked out. If the number

is off, the scanner does not scan any

of the channels within that bank.

Notes:

• You can manually select any

channel in a bank, even if the

bank is turned off.

• There must be at least one active

bank. You cannot turn off all

banks.

20-418.fm Page 23 Wednesday, August 4, 1999 12:42 PM

24

Locking Out Channels

You can increase the effective scan-

ning speed by locking out channels

that have a continuous transmission,

such as a weather channel.

Note: You can manually select the

channels you have locked out.

To lock out a channel, manually select

the channel, then press LOCKOUT so

L/O appears on the display.

To review the locked-out channels,

manually select the first channel you

want to review. Then repeatedly press

REVIEW to see the locked-out chan-

nels in sequence.

Note: If you press REVIEW when there

is no locked-out channel, the scanner

sounds an error tone.

To remove the lock-out from a chan-

nel, manually select the channel, then

press LOCKOUT so L/O disappears

from the display.

Follow these steps to unlock all chan-

nels in the selected banks.

1. Select the banks while the scan-

ner is scanning.

2. Press MANUAL to stop scanning.

3. Press and hold LOCKOUT until the

scanner beeps twice.

MANUALLY SELECTING

A CHANNEL

You can continuously monitor a spe-

cific channel without scanning. This is

useful if you hear an emergency

broadcast on a channel and do not

want to miss any details (even though

there might be periods of silence) or if

you want to monitor a specific chan-

nel.

If your scanner is scanning and stops

at the desired channel, press MANUAL

one time. Pressing MANUAL additional

times causes your scanner to step

through the channels.

To manually select a channel, press

MANUAL or turn the rotary tuner either

way one click. Then enter the channel

number using either of the following

methods:

• Enter the channel number, then

press

MANUAL again.

•Press

FREQ/CHAN-LOCK until the

scanner displays CHAN, then turn

the rotary tuner until the desired

channel number appears.

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25

SCANNING THE

WEATHER BAND

The FCC (Federal Communications

Commission) has allocated 11 chan-

nels for use by the National Oceanic

and Atmospheric Administration

(NOAA).

Your scanner is preprogrammed with

the following seven frequencies avail-

able to NOAA.

To hear your local forecast and re-

gional weather information, simply

press

WX.

WX appears on the display.

Your scanner scans the weather band

and stops on an active broadcast. If a

broadcast is weak, press WX again to

continue to scan through the weather

band. To store the current weather

channel in a monitor memory, press

MONITOR.

Weather Alert

Your scanner’s weather alert feature

can warn you when your local NOAA

weather station broadcasts a severe

weather emergency signal. (See

“Testing Alert Operation” on Page 10.)

1. Press WX to find the clearest local

weather broadcasting station.

2. Press ALERT. ALERT appears.

When NOAA broadcasts a severe

weather emergency signal, the scan-

ner sounds a loud alarm (regardless

of the volume control setting). The

alarm continues until the emergency

signal stops transmitting.

To manually turn off the siren and exit

the weather alert mode, press ALERT

or WX.

Using the Weather Alert

Standby Mode

When you set the scanner to the

weather alert standby mode, the scan-

ner’s display and speaker turn off until

the scanner receives the severe

weather emergency signal. When the

scanner receives the signal, it sounds

a loud alarm. To set the scanner to the

weather alert standby mode, follow

these steps.

1. Press WX.

2. When the scanner stops on a

weather channel, press ALERT for

2 seconds. The scanner displays

on ALErt for 10 seconds, then

the display turns off and your

scanner is in the weather alert

standby mode.

To exit the weather alert standby

mode, press ALERT or WX.

• 162.400 MHz • 162.450 MHz

• 162.500 MHz • 162.475 MHz

• 162.425 MHz • 162.550 MHz

• 162.525 MHz

20-418.fm Page 25 Wednesday, August 4, 1999 12:42 PM

26

SPECIAL FEATURES

DELAY

Many agencies use a two-way radio

system that might have a period of 2

or more seconds between a query and

a reply. To keep from missing a reply

on a specific channel, you can pro-

gram a 2-second delay into any chan-

nel, or on frequencies during a

frequency search. The scanner con-

tinues to monitor the frequency for 2

seconds after the transmission stops

before resuming scanning.

To program a 2-second delay:

• If the scanner is scanning and

stops on an active channel,

quickly press DELAY before it con-

tinues scanning again.

• If the desired channel is not

selected, manually select the

channel, then press DELAY.

• If the scanner is searching, press

DELAY while the scanner is

searching.

DLY appears on the

display and the scanner automati-

cally adds a 2-second delay to

every transmission it stops on.

To turn off the 2-second delay, press

DELAY while the scanner is monitoring

the channel or while the scanner is

searching. DLY disappears from the

display.

PRIORITY

The priority feature lets you scan

through channels and still not miss im-

portant or interesting calls on specific

channels. You can program one

stored channel in each bank as a pri-

ority channel (up to 10 stored chan-

nels). As the scanner scans the

banks, it checks the priority channels

every 2 seconds for activity.

Notes:

• You cannot use the priority and

data skip features at the same

time.

• You cannot use the priority and

count features at the same time.

• You can lock out priority channels.

If you lock out all priority channels,

the display shows LOC OUt when

you turn on the priority feature.

• The priority feature must be

turned off to listen to monitor

memories.

• The scanner checks the lowest-

numbered priority channels first. If

it detects a transmission on a pri-

ority channel, it stays on that

channel and does not check the

other priority channels until the

transmission ends.

20-418.fm Page 26 Wednesday, August 4, 1999 12:42 PM

27

The scanner automatically desig-

nates each bank’s first channel as that

bank’s priority channel. Follow these

steps to program a different channel

as the priority channel for a bank.

1. Press PROGRAM.

2. Use the number keys to enter the

channel number you want to pro-

gram as the priority channel, then

press PRIORITY. P appears on the

display to the right of the channel

number.

3. Repeat Steps 1-2 for each chan-

nel you want to program as a pri-

ority channel.

4. To confirm all priority channel

numbers for banks, press PRO-

GRAM then repeatedly press PRI-

ORITY to see the priority channels.

To turn on the priority feature, press

PRIORITY during scanning. PRI ap-

pears on the display, and the scanner

checks the priority channel in all se-

lected banks every 2 seconds, from

the lowest-numbered priority channel

to the highest-numbered priority chan-

nel. It stays on the channel if there is

activity, and P appears on the display.

To turn off the priority feature, press

PRIORITY. PRI disappears.

CHANGING SEARCH

SPEEDS

The PRO-2045 has two search

speeds.

To switch between the normal and Hy-

persearch speeds, during a search or

auto store, press H/S. HYPER appears

on the display during a HyperSearch.

Note: You can use Hypersearch only

in the 5 kHz-step bands. See “Speci-

fied Intervals” on Page 35.

USING THE

PROGRAMMABLE

ATTENUATOR

To limit reception to strong local

broadcasts, you can reduce the scan-

ner’s sensitivity by turning on the at-

tenuator.

You can turn the attenuator on or off

for individual channels, or use this

function during a limit, direct, or

weather search.

To turn on the attenuator, press ATT

until ATT appears on the display. To

turn off the attenuator, press ATT until

ATT disappears.

Normal

Search Hypersearch

Speed 100 steps/

second 300 steps/

second

20-418.fm Page 27 Wednesday, August 4, 1999 12:42 PM

28

USING AUTO SORT

You can set the scanner to scan within

each bank from the channel with the

lowest frequency to the channel with

the highest frequency, instead of in

channel number order. This makes

the scanner scan faster.

Follow these steps to turn on auto

sort.

1. Turn off the scanner.

2. Press and hold AUTO, then turn

on the scanner. on Sort appears

for 3 seconds. During scanning,

AUTO appears.

To turn off auto sort, repeat these

steps.

OFF Sort appears for 3 sec-

onds.

SKIPPING DATA

SIGNALS

You can set the scanner to skip non-

modulated or data signals (such as

control signals for pagers or trunked

systems) when searching or scanning.

Note: This feature does not work in

the AM mode (see “Changing the

Modulation Mode” on Page 28). Also,

the scanner might not skip data sig-

nals that have varied patterns of paus-

es and frequencies.

To skip data signals, press DATA until

DATA appears. To turn off data skip,

press DATA until DATA disappears.

TURNING ON OR OFF

THE KEY TONE

Your scanner beeps each time you

press a key. Follow these steps to turn

off the key tone beep.

1. Turn off the scanner.

2. Press and hold LOCKOUT, then

turn on the scanner. OFF bEEP

appears.

To turn on the beep, repeat these

steps.

on bEEP appears.

CHANGING THE

MODULATION MODE

Your scanner receives amplitude

modulated (AM) or narrow-band fre-

quency modulated (NFM) transmis-

sions and selects the mode most

commonly used in each frequency

range. However, you can manually

change the mode while the scanner is

searching for frequencies or scanning

channels. The selected mode flashes

if it is not the default.

To change the modulation mode,

press

MODE until the desired modula-

tion mode (AM or FM) flashes on the

display.

To return to the default modulation

mode, press MODE until the mode no

longer flashes.

20-418.fm Page 28 Wednesday, August 4, 1999 12:42 PM

29

TRANSFERRING A

FREQUENCY TO

ANOTHER CHANNEL

Transferring to an Empty

Channel

This feature lets you reassign a stored

frequency to another bank’s vacant

channel.

Note:

You cannot transfer a frequency

into or out of a priority channel.

1. Press MANUAL to stop scanning.

2. Using the number keys or the

rotary tuner, select the channel

that has the frequency you want to

transfer.

3. Press TRANSFER. All bank indica-

tors flash on the display.

4. Use the number keys to select the

desired bank number. The fre-

quency is automatically trans-

ferred to the selected bank’s

lowest empty channel.

Note: If all that bank’s channels are

already used, FULL appears. In that

case, you can select another bank.

Transferring to a Channel that

has a Stored Frequency

1. Press MANUAL to stop scanning.

2. Press FREQ/CHAN-LOCK until

CHAN appears on the display.

3. Using the number keys or the

rotary tuner, select the channel

that has the frequency you want to

transfer.

4. Press TRANSFER twice. CH

flashes on the display.

5. Using the number keys or the

rotary tuner, select the desired

channel.

6. Press

s

to transfer the frequency.

Exchanging Frequencies

Between Two Programmed

Channels

1. Press MANUAL to stop scanning.

2. Press FREQ/CHAN-LOCK until

CHAN appears.

3. Using the number keys or the

rotary tuner, select the channel

that has the frequency you want to

transfer.

4. Press TRANSFER twice. CH

flashes on the display.

5. Using the number keys or the

rotary tuner, select the desired

channel.

6. Press

t

to exchange the frequen-

cies.

20-418.fm Page 29 Wednesday, August 4, 1999 12:42 PM

30

USING THE COUNT

FEATURE

The scanner can count the number of

times it has detected a transmission

on each channel since you turned on

the scanner or cleared the count.

1. While the scanner is scanning,

press

MANUAL.

2. Press COUNT. The scanner dis-

plays

COUNT, the current channel

number, and the count number.

3. Repeatedly press MANUAL to dis-

play each channel and the num-

ber of times the scanner detected

a transmission on that channel.

Note: If CHAN is on the display,

you can use the rotary tuner

instead of pressing MANUAL to

display the channel count.

While you view the count for a chan-

nel, you can zero the count by press-

ing CLEAR.

To turn off the count display, press

COUNT until COUNT disappears.

USING CTCSS

CTCSS is frequently used when two

different services or groups use the

same frequencies, but are relatively

close together. Each group sets their

transmitters to different CTCSS fre-

quencies, and sets their receivers to

only let them hear transmissions that

include the correct CTCSS frequency.

This helps to avoid radio interference

between the groups.

You can use the CTCSS feature to

lock out undesired transmissions and

monitor only those which transmit a

specific CTCSS tone.

Note: You must install a CTCSS tone

board before you can use this feature.

“Installing an Optional CTCSS

Tone Board” on Page 12.

CTCSS Tone Frequencies

The following table shows the avail-

able CTCSS tone frequencies and the

letter codes commonly used in the in-

dustry to refer to the frequencies:

XZ 67.0 1B 107.2 6Z 167.9

XA 71.9 2E 110.9 6A 173.8

WA 74.4 2A 114.8 6B 179.9

XB 77.0 2B 118.8 7Z 186.2

WB 79.7 3Z 123.0 7A 192.8

YZ 82.5 3A 127.3 M1 203.5

YA 85.4 3B 131.8 M2 210.7

YB 88.5 4Z 136.5 M3 218.1

ZZ 91.5 4A 141.3 M4 225.7

ZA 94.8 4B 146.2 M5 233.6

ZB 97.4 5Z 151.4 M6 241.8

1Z 100.0 5A 156.7 M7 250.3

1A 103.5 5B 162.2

20-418.fm Page 30 Wednesday, August 4, 1999 12:42 PM

31

Assigning a CTCSS Tone

Frequency to a Channel

You can specify the CTCSS tone fre-

quency you want the scanner to de-

tect on a specific preprogrammed

channel.

1. Select the channel number that

has the frequency you want to

assign a CTCSS tone frequency

to.

2. Press PROGRAM. PGM appears

on the display.

3. Press CTCSS. CTCSS and 00.0

appear on the display.

4. Press FREQ/CHAN-LOCK until

FREQ

appears on the display.

5. Using s, t, or the rotary tuner,

choose the CTCSS frequency.

The channel number flashes on

the display.

Note: Turn the rotary tuner clock-

wise to step up the displayed tone

frequency. Turn the rotary tuner

counterclockwise to step down the

displayed tone frequency.

6. Press E. The channel number

stops flashing.

7. Press MANUAL. The scanner dis-

plays the channel and frequency.

8. To turn on CTCSS for that chan-

nel, press CTCSS. The scanner’s

display alternates between the

frequency and the CTCSS tone

frequency.

Changing or Deleting a

CTCSS Tone Frequency for a

Channel

1. If CTCSS is not displayed, press

CTCSS. The scanner displays

CTCSS.

2. Select the channel number that

contains the CTCSS tone fre-

quency you want to change or

delete.

3. Press

PROGRAM, then CTCSS.

4. Using s, t, or the rotary tuner,

select

00.0 to delete the CTCSS

tone frequency or select another

CTCSS tone frequency to replace

the current one.

5. Press E.

20-418.fm Page 31 Wednesday, August 4, 1999 12:42 PM

32

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 hori-

zon.

During the summer months, you might

be able to hear stations in the 30–50

MHz range located several hundred or

even thousands of miles away. This is

because of summer atmospheric con-

ditions. This type of reception is unpre-

dictable but often very interesting!

GUIDE TO

FREQUENCIES

National Weather Service

Frequencies

Ham Radio Frequencies

Ham radio operators often broadcast

emergency information when other

means of communication break down.

The following chart shows the voice

frequencies that you can monitor.

161.650 MHz 162.425 MHz 162.475 MHz 162.550 MHz

161.775 MHz 162.440 MHz 162.500 MHz 163.275 MHz

162.400 MHz 162.450 MHz 162.525 MHz

Wavelength Voice Frequency (MHz)

10-meter 29.000 29.700

6-meter 50.100 54.000

2-meter 144.100 148.000

11/4-meter 222.000 225.000

70-centimeter 420.000 450.000

33-centimeter 902.000 928.000

20-418.fm Page 32 Wednesday, August 4, 1999 12:42 PM

33

Birdie Frequencies

Birdies are frequencies your scanner uses when it operates. These operating fre-

quencies might interfere with broadcasts on the same frequencies. If you tune 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. Here are this scanner’s birdie frequencies that you might want to

watch for:

To find the birdies in any receiver, begin by disconnecting the antenna and moving

it away from the receiver. Make sure that no other nearby radio or TV sets are

turned on near the receiver. Use the search function and search every frequency

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.

29.4900 114.6875 147.4550 405.6000

29.4950 117.9625 147.4600 416.0000

31.2000 124.5250 150.9100 417.1000

36.0450 127.8000 155.1050 456.9260

52.0000 131.0750 156.0000 469.5000

52.4300 134.3500 228.4625 813.4000

108.1375 135.2000 230.5625 820.1125

108.8125 137.6250 232.1000 940.9000

111.4125 140.9050 398.2375 993.5000

114.4000 144.1800

20-418.fm Page 33 Wednesday, August 4, 1999 12:42 PM

34

GUIDE TO THE ACTION BANDS

Typical Band Usage

HF Band (29.00–30.0 MHz)

10-Meter Amateur ................................................................. 29.00–29.70 MHz

VHF Band (30.00–300.0 MHz)

Low Range ............................................................................ 29.70–50.00 MHz

6-Meter Amateur ................................................................... 50.00–54.00 MHz

Aircraft............................................................................... 108.00–136.98 MHz

U.S. Government .............................................................. 137.00–144.00 MHz

2-Meter Amateur ............................................................... 144.00–148.00 MHz

High Range ....................................................................... 148.00–174.00 MHz

New Mobile Narrow Band ................................................. 220.00–222.00 MHz

11/4 -Meter Amateur........................................................... 222.00–225.00 MHz

Military Aircraft .................................................................. 225.00–287.80 MHz

UHF Band (300.00 MHz–3.0 GHz)

Military Aircraft .................................................................. 311.00–384.00 MHz

U.S. Government .............................................................. 406.00–450.00 MHz

70-Centimeter Amateur..................................................... 420.00–450.00 MHz

Low Range ........................................................................ 450.00–470.00 MHz

Public Service ................................................................... 806.00–823.98 MHz

Conventional Systems ...................................................... 851.00–856.00 MHz

Conventional/Trunked Systems ........................................ 856.00–861.00 MHz

Trunked Systems .............................................................. 861.00–866.00 MHz

Public Safety ..................................................................... 866.00–869.00 MHz

High Range ....................................................................... 894.01–902.00 MHz

33-Centimeter Amateur..................................................... 902.00–928.00 MHz

Private Trunked ................................................................. 935.00–940.00 MHz

General Trunked ............................................................... 940.00–941.00 MHz

Fixed Services................................................................... 941.00–944.00 MHz

Studio-to-Transmitter Broadcast Links .............................. 944.00–952.00 MHz

Private Fixed Services, Paging ......................................... 952.00–960.00 MHz

Aeronautical Navigation .................................................. 960.00–1000.00 MHz

20-418.fm Page 34 Wednesday, August 4, 1999 12:42 PM

35

Primary Usage

As a general rule, most radio activity is concentrated on the following frequencies:

VHF Band

UHF Band

Note: Remote control stations and mobile units operate at 5 MHz higher than their

associated base stations and relay repeater units.

Activities Frequencies (MHz)

Government, Police, and Fire

Emergency Services 153.785–155.980

158.730–159.460

Railroad 160.000–161.900

Activities Frequencies (MHz)

Land-Mobile Paired Frequencies 450.000–470.000

Base Stations 451.025–454.950

Mobile Units 456.025–459.950

Relay Repeater Units 460.025–464.975

Remote Control Stations 465.025–469.975

SPECIFIED INTERVALS

:Frequencies in different bands are accessible only at specific intervals. For example

Note: Your scanner automatically rounds the entered frequency down to the closest

valid frequency. For example, if you try to enter a frequency of 151.473, your scanner

accepts it as 151.470.

Band Type Specified Interval (kHz)

VHF, HAM, and Government 5.0

Aircraft 25.0

All Others 12.5

20-418.fm Page 35 Wednesday, August 4, 1999 12:42 PM

36

BAND ALLOCATION

To help decide which frequency ranges to scan, use the following listing of the typi-

cal services that use the frequencies your scanner receives. These frequencies are

subject to change, and might vary from area to area. For a more complete listing,

refer to the “Police Call Radio Guide including Fire and Emergency Services,” avail-

able at your local RadioShack store.

Abbreviations

AIR ................................................. Aircraft

BIFC .....Boise (ID)Intera

g

ency 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

(Manufacturin

g

, Construction, Farmin

g

, Forest Products)

MAR ...................... Military Amateur Radio

MARI .....................Maritime Limited Coast

(Coast Guard, Marine telephone, Shipboard Radio, Private stations)

MARS ......... Military Affiliate Radio System

MED ............ Emer

g

ency/Medical Services

MIL ......................................... U.S. Military

MOV ............Motion Picture/Video Industry

NEW........................... New Mobile Narrow

NEWS..................................... Relay Press (Newspaper reporters)

OIL ......................... Oil/Petroleum Industry

PFSP..........Private Fixed Services/Pa

g

in

g

POL ..............................Police Department

PUB ...................................Public Services

(Public Safety, Local Government, Forestry Conservation)

PSB .......................................Public Safety

PTR .................................. Private Trunked

20-418.fm Page 36 Wednesday, August 4, 1999 12:42 PM

37

ROAD........ Road & Hi

g

hway Maintenance

RTV ..Radio/TV Remote Broadcast Pickup

TAXI ......................................Taxi Services

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) (29 MHz-30 MHz)

10-Meter Amateur Band (29.0-29.7 MHz)

28.000-29.700 ....................................HAM

Very High Frequency (VHF)

(30 MHz– 300 MHz)

Low Band (29.7–50 MHz–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 .................... US, IND, PUB

34.010-34.990 .........................GOVT, MIL

35.020-35.980BUS, 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

47.440-49.580 ........................... IND, PUB

49.610-49.990 ......................... MIL, TELC

6-Meter Amateur Band (50-54 MHz)

50.00-54.00........................................HAM

20-418.fm Page 37 Wednesday, August 4, 1999 12:42 PM

38

Aircraft Band (108–136 MHz)

108.000-121.490 .................................AIR

121.500 ............................ AIR Emer

g

ency

121.510-136.000 .................................AIR

U.S. Government Band (138-144 MHz)

137.000-144.000 .....................GOVT, MIL

2-Meter Amateur Band (144-148 MHz)

144.000-148.000 ............................... HAM

VHF-Hi BAND (148-174 MHz)

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

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

New Mobile Narrow Band (220-222 MHz)

220.000-222.000 .............................. NEW

11/4-Meter Amateur Band (222-225 MHz)

222.000-225.000 ...............................HAM

Military Aircraft Band (237.9-287.8 MHz)

237.900 ... Coast Guard Search & Rescue

239.800 ................................ FAA Weather

241.000 ............................................. Army

243.000 ...................................Emer

g

ency

255.400 .......................FAA Fli

g

ht Service

257.800 .............................Civilian Towers

287.800 ...... Coast Guard Air/Sea Rescue

Ultra Hi

g

h Frequency (UHF) - (300 MHz- 3

GHz)

Military Aircraft Band (319.1-383.9 MHz)

319.100 ................. FAA Air Traffic Control

321.000-336.600 ........................Air Force

342.500-344.600 ................. FAA Weather

346.400-364.200 ........................Air Force

Air Traffic Control

381.800-383.900................... Coast Guard

20-418.fm Page 38 Wednesday, August 4, 1999 12:42 PM

39

U.S. Government Band (406-450 MHz)

406.125-419.975 ................. GOVT, USXX

70-Centimeter Amateur Band (420-450

MHz)

420.000-450.000 ...............................HAM

Low Band (450-470 MHz)

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

(470-806 MHz) (Channel 14 throu

g

h 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 services.

Conventional Systems Band

Locally Assi

g

ned

851.0125-855.9875 ........................... CSB

Conventional/Trunked Systems Band

Locally Assi

g

ned

856.0125-860.9875 .........................CTSB

Trunked Systems Band

Locally Assi

g

ned

861.0125-865.9875 ............................TSB

Public Safety Band

Locally Assi

g

ned

866.0125-868.9875 ........................... PSB

33-Centimeter Amateur Band

(902-928 MHz)

902.000-928.000 .............................. HAM

Private Trunked

935.0125-939.9875 ........................... PTR

General Trunked

940.0125-940.9875 ........................... GTR

Fixed Services

941.000-944.000 ............................GOVT

Studio-to-Transmitter Broadcast Links

944.000-952.000 ................................TVn

Private Fixed Services, Pa

g

in

g

952.000-960.000 .............................PFSP

Aeronautical Navi

g

ation

960.000-1000.000 .............................. AIR

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 nec-

essary conversions.

1 MHz (million)=1,000 kHz (thousand)

To convert MHz to kHz, multiply by

1,000.

30.62 MHz x 1000=30620 kHz

To convert from kHz to MHz, divide by

1,000.

=127.8 MHz

To convert MHz to meters, divide 300

by the number of megahertz.

1.75 meters

127 800,

1000

-----------------------kHz

300

171

----------=

MHz

20-418.fm Page 39 Wednesday, August 4, 1999 12:42 PM

40

TROUBLESHOOTING

If you have problems, here are some

suggestions that might help. If none of

these suggestions help, take your

scanner to your local RadioShack

store for assistance.

PROBLEM POSSIBLE CAUSE REMEDY

Scanner is totally inop-

erative. No power. Make sure you plugged

the scanner into a work-

ing AC or DC outlet.

Scanner is on but will

not scan. •SQUELCH is not cor-

rectly adjusted.

• A channel has been

manually selected.

• Adjust SQUELCH

clockwise.

• Press SCAN.

While scanning, the

scanner locks on fre-

quencies that have an

unclear transmission.

“Birdies.” Avoid programming fre-

quencies listed under

“Birdie Frequencies” on

Page 33 or only listen to

them manually.

Rotary tuner does not

work. Rotary lock is turned on. Press LOCK until FREQ

or CHAN appears on the

display.

20-418.fm Page 40 Wednesday, August 4, 1999 12:42 PM

41

CARE AND MAINTENANCE

Your PRO-2045 200-Channel Direct

Entry Programmable Scanner is an

example of superior design and crafts-

manship. The following suggestions

will help you care for the PRO-2045 so

you can enjoy it for years.

Keep the scanner dry. If

it gets wet, wipe it dry

immediately. Liquids

can contain minerals

that can corrode the

electronic circuits.

Handle the scanner

gently and carefully.

Dropping it can damage

circuit boards and cas-

es and can cause the

scanner to work im-

properly.

Use and store the scan-

ner only in normal tem-

perature environments.

Temperature extremes

can shorten the life of

electronic devices and

distort or melt plastic

parts.

Keep the scanner away

from dust and dirt,

which can cause pre-

mature wear of parts.

Wipe the scanner with a

damp cloth occasional-

ly to keep it looking

new. Do not use harsh

chemicals, cleaning

solvents, or strong de-

tergents to clean the

scanner.

Modifying or tampering with your

scanner’s internal components can

cause a malfunction and might invali-

date the scanner’s warranty and void

your FCC authorization to operate it. If

your scanner is not operating as it

should, take it to your local Ra-

dioShack store for assistance.

CLEANER

20-418.fm Page 41 Wednesday, August 4, 1999 12:42 PM

42

SPECIFICATIONS

Frequency Coverage, Step, and Default Modulation Modes:

Channels . . . . . . . . . . . . . 210 (20 Channels × 10 Banks + 10 Monitor Memories)

Sensitivity (20 dB S/N with 60% modulation for AM; 3 kHz deviation for NFM):

NFM 40.84 MHz . . . . . . . . . . . . . . . . . . . . 0.5 µV

S+N/N=20 dB 162.4 MHz . . . . . . . . . . . . . . . . . . . . 0.6 µV

453.25 MHz . . . . . . . . . . . . . . . . . . . . 0.6 µV

954.9125 MHz . . . . . . . . . . . . . . . . . . . . 0.8 µV

AM 127.175 MHz . . . . . . . . . . . . . . . . . . . . 1.5 µV

S+N/N=20 dB 230.05 MHz . . . . . . . . . . . . . . . . . . . . 1.5 µV

325.05 MHz . . . . . . . . . . . . . . . . . . . . 1.5 µV

Direct/Limit Search Speed:

Normal Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Steps/Second

Hypersearch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 Steps/Second

Scanning Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Channels/Second

Priority Channel Sampling Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Seconds

Programmable Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Seconds

Range

(MHz) Step

(kHz) Mode

29–54 5 NFM

108–136.975 12.5 AM

137–174 5 NFM

216–224.9875 12.5 NFM

225–399.9875 12.5 AM

400–512 12.5 NFM

806–823.9375 12.5 NFM

851–868.9375 12.5 NFM

896.1125–1,000 12.5 NFM

20-418.fm Page 42 Wednesday, August 4, 1999 12:42 PM

43

IF Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1st IF: 370.7 MHz

2nd IF: 10.85 MHz

3rd IF: 450 kHz (NFM)

Audio Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Watt Maximum

Built-In Speaker . . . . . . . . . . . . . . . . . . 27/16-Inch (57 mm), 8-Ohm, Dynamic Type

Maximum Current Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 mA

Power Requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Volts

AC Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supplied

DC Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RadioShack Cat. No. 270-1533

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31/4 × 91/4 × 81/16 Inches (HWD)

(82 × 235 × 205mm)

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 lb, 17 oz

(960 g)

Specifications are typical; individual units might vary. Specifications are subject to

change and improvement without notice.

20-418.fm Page 43 Wednesday, August 4, 1999 12:42 PM

RadioShack

A Division of Tandy Corporation

Fort Worth, Texas 76102 UBZZ01262ZZ

5A6 Printed in the Philippines

RadioShack Limited Warranty

This product is warranted against defects for 1 year from date of purchase from

RadioShack company-owned stores and authorized RadioShack franchisees and deal-

ers. Within this period, we will repair it without charge for parts and labor. Simply bring

your RadioShack sales slip as proof of purchase date to any RadioShack store. War-

ranty does not cover transportation costs. Nor does it cover a product subjected to mis-

use or accidental damage.

EXCEPT AS PROVIDED HEREIN, RadioShack MAKES NO EXPRESS WARRANTIES

AND ANY IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE DURATION

OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. Some states do

not permit limitation or exclusion of implied warranties; therefore, the aforesaid limita-

tion(s) or exclusion(s) may not apply to the purchaser.

This warranty gives you specific legal rights and you may also have other rights which vary from

state to state.

We Service What We Sell

10/95

20-418.fm Page 44 Wednesday, August 4, 1999 12:42 PM