Radio Shack 20-136 User manual

Thank you for purchasing your 200 Channel Desktop Radio Scanner from

RadioShack. Please read this user’s guide before installing, setting up and

using your new scanner.

20-136

PRO-136

www.radioshack.com

Scanner

AC adapter

Antenna

User’s guide

Preprogrammed frequency list

Quick start guide

Desktop Radio Scanner

What’s Included

ontents

Scanner Setup ................................................................................ 4

Scanner Features .................................................................................................4

Connecting the Antenna......................................................................................6

Powering Your Scanner........................................................................................6

Installing Batteries...........................................................................................6

Battery Notes.................................................................................................7

Recycle Rechargeable Batteries....................................................................7

Scanner Placement..............................................................................................7

Connecting Headphones.....................................................................................8

Listening Safely................................................................................................8

Connecting the External Alert Out .....................................................................8

Understanding Your Scanner..............................................................................8

Turning on the Scanner........................................................................................9

Setting the Clock/Alarm......................................................................................9

Alarm Function..............................................................................................10

Programming Frequencies into Channels.....................................................10

Searching ..................................................................................... 12

Fine Tune.............................................................................................................12

Service Bank Search.........................................................................................12

Storing Frequencies Found During a Search.................................................13

Search Skip Memory.........................................................................................13

Search Speeds...................................................................................................14

Scanning....................................................................................... 15

Scanning Stored Channels...............................................................................15

Manually Selecting a Channel.........................................................................15

Weather Scan.....................................................................................................16

Contents

Receiving NWR-SAME and Weather Alert Signals.......................................16

Turning On the Digital Weather Alert Feature..........................................16

Receiving Alerts in Standby Mode...............................................................17

Testing the Weather Alarm...........................................................................17

3URJUDPPLQJ$OHUWVIRUD6SHFLÀF&RXQW\.................................................17

Programming FIPS .....................................................................................17

Skywarn..............................................................................................................18

About Skywarn..............................................................................................19

Settings ........................................................................................ 20

Setting Delay......................................................................................................20

Turning Channel-Storage Banks On or Off.....................................................20

Locking Out Channels.......................................................................................20

Setting Priority...................................................................................................21

Using the Display Backlight.............................................................................21

Advanced Programming ................................................................. 22

Cloning Your Scanner........................................................................................22

Wired Programming..........................................................................................23

Additional Information................................................................... 24

FCC Notice..........................................................................................................24

Scanning Legally................................................................................................24

Care.....................................................................................................................25

Service and Repair............................................................................................25

6SHFLÀFDWLRQV....................................................................................................25

Troubleshooting.................................................................................................27

Resetting your Scanner................................................................................27

Scanner Setup

Scanner Features

•

CLR

DELAY

Enter a decimal point.

Clear an entry.

Turn delay on or off.

Select a service band:

MAR (Marine), FD/PD (Fire/Police),

AIR (Aircraft), HAM, or FM.

Start a weather

scan. Press and

hold to activate

Skywarn.

ENT (Enter)

PROGRAM

Complete the entry of frequencies.

Put the scanner in programming

mode.

SCAN

MAN

Scan the stored channel frequencies. Go to manual mode.

SRCH

Start a ﬁne tune search.

Search up and down in a ﬁne tune or service search.

Scanner Setup

0-9

Input a number.

PRI (Priority)

WX ALERT

Turns the priority function on or off.

Press to turn weather alert on and off.

L/O

Lockout selected channels or skip speciﬁed

frequencies during a search.

PSE (Pause)

Stop and resume search or scan.

Press to turn the backlight on for 15 seconds.

Press and hold to turn the backlight on and off.

POWER

Press and hold to

turn the scanner

on or off.

Clock Switch

Set to Alarm Set to set the alarm time.

Set to Clock Set to set the current time.

Set to Clock to display the current time.

Alarm Switch

Set to Off to disable alarm.

Set to Radio to enable the radio alarm.

Set to Tone to enable the tone alarm.

Scanner Setup

Connecting the Antenna

Attach the supplied antenna to the scanner by aligning the arrow

on its base with the tab on the scanner’s BNC connector and then

pressing into place.

When using an external antenna, always connect with 50-ohm,

RG-58, or RG-8 coaxial cable. If the antenna

is over 50 feet from the scanner, use

RG-8 low-loss dielectric coaxial

cable. If your antenna’s cable does

not have a BNC connector, your

local RadioShack store carries a

variety of BNC adapters.

Powering Your Scanner

Insert the supplied AC adapter’s barrel plug

into the power jack on the back of the scanner. Plug the adapter into a

standard household outlet that supplies 120V AC, 60Hz. Do not plug the

adapter into a switch-controlled outlet.

Installing Batteries

1. Remove the battery compartment cover.

2. Insert three AA batteries (not included) into the battery compartment,

matching the polarity symbols (+ and –) marked inside.

3. Replace the cover.

DC 12V Jack

Scanner Setup

Battery Notes

• Use fresh alkaline AA batteries.

• Rechargeable batteries can be used, but battery life is shorter than

with alkaline batteries. The scanner will not recharge batteries in the

compartment.

• Always remove old or weak batteries. Batteries can leak chemicals that

destroy electronic circuits.

• Do not mix old and new batteries, different types of batteries

(standard, alkaline, or rechargeable), or rechargeable batteries of

different capacities.

• The batteries are intended to provide backup power for the clock and

for scanning for a short time. When the backup batteries becomes too

low, appears. Promptly replace the batteries.

• When you either install batteries or connect the AC Adapter to a

standard wall outlet, the scanner powers on and goes to STANDBY

mode. The display shows the initial clock time of 12:00 AM. The

scanner remains in STANDBY mode.

Recycle Rechargeable Batteries

Placing rechargeable batteries in the trash can be harmful to

the environment. Instead, recycle old rechargeable batteries

at your local RadioShack store free of charge. RadioShack

participates in the RBRC©battery recycling program, and is

committed to preserving the environment and conserving natural

resources. Call 1-800-THE-SHACK (1-800-843-7422) for moreCall 1-800-THE-SHACK (1-800-843-7422) for more

information.

Scanner Placement

• Do not use the scanner in high-moisture environments such as the

kitchen or bathroom.

• Avoid placing the scanner in direct sunlight or near heating elements

or vents.

• If your scanner receives interference or electrical noise, move the

scanner or its antenna away from the source. You might also try

changing the height or angle of the antenna.

Scanner Setup

Connecting Headphones

For private listening, you can plug a mono earphone or headset into the

Headphone Jack on the back of your scanner. This automatically disconnects

the internal speaker. Note that the sound is not in stereo.

Listening Safely

To protect your hearing, follow these

earphone or headphones guidelines:

• Do not listen at extremely high

volume levels. Extended high-

volume listening can lead to

permanent hearing loss.

• Set the volume to the lowest

setting before listening. Turn

on the scanner, and adjust the

volume to a comfortable level.

• After you set the volume, do not

increase it. Over time, your ears

adapt to the volume level, so a

volume level that does not cause

discomfort might still damage

your hearing.

Connecting the External Alert Out

To provide additional alerting options for the weather alert, connect a

switch-closure activated device such as a strobe or siren controller (not

supplied). The devise can be up to 200mA, AC/DC 20V and must have a

3.5mm mono plug cable. Plug the device into the Alert Out Jack on the back

of your scnner.

Understanding Your Scanner

We use a few simple terms in this manual to explain the features of the

scanner. Familiarize yourself with these terms and the scanner’s features, and

you can put the scanner to work for you right away.

The scanner scans conventional frequencies. A frequency, expressed in

MHz, is the tuning location of a station. To ﬁnd active frequencies, use the

search function or consult an online resource such as www.radioreference.

com.

Headphone Jack

Alert Out Jack

Scanner Setup

Besides searching within a selected frequency range, you can also search

your scanner’s service banks. Service banks are preset groups of frequencies

categorized by the type of services that use those frequencies. The scanner

is preprogrammed with all the frequencies allocated to the Marine, Aircraft,

Police (Fire/Emergency), Ham and FM services.

When you search and ﬁnd a desired frequency, you can store it into a

programmable memory location called a channel. Channels are grouped

into channel-storage banks. Your scanner has 10 channel-storage banks

(numbered 0-9). Each bank contains 20 channels (numbered 0-19), for a total

of 200 channels. You can scan the channel storage banks to see if there is

activity on the frequencies stored there.

Note: Search for frequencies to ﬁnd your local frequencies, after you

have programmed these frequencies into channels, you can scan the

channels.

Use each channel-storage bank to group frequencies. For example, the

police department might use four frequencies in your town while the

ﬁre department uses an additional four. You could program the police

frequencies in bank 0, and program the ﬁre department frequencies in bank 1.

Turning on the Scanner

1. Turn SQUELCH fully counterclockwise.

2. Press and hold the POWER button to turn on your scanner. Turn up the

VOLUME until you hear a hissing sound.

3. Turn SQUELCH clockwise until the hissing stops.

Note: Make sure the antenna is connected before you turn on

the scanner.

To perform a quick check of scanner operation, press the WX/key. If you

are near a NOAA weather station, you should hear weather information.

Setting the Clock/Alarm

Your scanner’s clock displays whenever you

turn off the radio functions. It can also be

used as an alarm clock.

To set the clock time:

1. Slide the Clock Switch to Clock Set.

Scanner Setup

2. The hour digits ﬂash. Press Tor Sor press the number keys to enter

the hour. Then press ENT/PROGRAM to set.

3. The minutes digits ﬂash. Press Tor Sor press the number keys to enter

the minutes. Press ENT/PROGRAM to set.

Note: When setting the clock minutes, the seconds digits are reset

to 00 to enable accurate time adjustment.

4. AM/PM ﬂashes. Press Tor Sto select

AM or PM. Press ENT/PROGRAM to set.

5. To save your selection, slide the Clock

Switch to Clock.

6. To set the alarm, slide the Clock Switch

to Alarm Set and repeat steps 2-5.

Alarm Function

• Slide the Alarm Switch to Tone, if you want the alarm to sound a tone

at the set time.

• Slide the Alarm Switch to Radio if you want the alarm to sound with

the channel that was previously selected in Scan Mode. The radio

alarm will only sound in Standby Mode.

• To silence the alarm, slide the Alarm Switch to Off. If you do not turn

off the alarm, it will sound for 20 minutes then reset to alert you again

the following day.

Programming Frequencies into Channels

Before the scanner can begin to scan, you must program a frequency into at

least one channel.

To locate and store speciﬁc frequencies into channels for later use:

1. From Scan Mode, press SCAN/MAN to stop scanning.

2. Press ENT/PROGRAM to put the scanner in programming mode. PGM

appears.

3. Use the number keys to enter both the channel storage bank and the

channel number you want to assign to a frequency.

4. Press SCAN/MAN.

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