Radio Shack 1901108 Users manual

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RADIOSHACK CORPORATION
FCC ID: AAO1901108
JOB #: 388K1
EXHIBIT #: 4

Cat. No. 19-1108

OWNER’ S MANUAL

Please read before using this equipment.

HTX-420

Compact Handheld 2m/70cm FM

Amateur Transceiver

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®

RadioShack®

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FEATURES

Your RadioShack Compact Handheld 2m/70cm FM Amateur Transceiver is compact and rugged, making it
easy to carry almost anywhere. The crystal controlled circuitry provides accurate and stable frequency
selection, making it an ideal choice for your amateur communications needs.

Note : You must have a Technician Class or higher Amateur Radio Operator’ s License, and a call sign
issued by the FCC, to legally transmit using this transceiver. Transmitting without a license carries heavy
penalties. Getting a license is easier than ever. See “Introduction to Amateur Radio” on Page for more
information.

Here are some of your transceiver ’s features.

Delux-Featured Dual-Band Radio – means flexible transmitting options with the latest built-in
conveniences. Its compact size and light weight are perfect for an amateur radio operation on the go.

Full 16-Key DTMF (Dual -Tone Multi Frequency) Keypad – lets you dial and make telephone connections.

Up To 5 Watts Output – The transceiver transmits at 5 output when powered by 13.8V External power

supply.

100 Memory Locations – let you store up to 100 frequencies and other settings.

S/RF and Battery Strength Meters – assure accurate signal and battery strength readings.

CTCSS (Continuous Tone Coded Squelch System) Subaudible Tone – both encodes and decodes 50

subaudible tones to help reduce interference from other nearby systems operating on the same frequency.

Repeater Offset – lets you select the offset value to match a local repeater.

Scan – the transceiver scans its full frequency range and 100 memory locations for transmissions.

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Power Save – conserves battery power when the transceiver is not transmitting or receiving.

Programmable Frequency Steps – let you set the frequency increment for tuning or scanning to steps of 5,

6.25, 7.5, 10, 12.5, 15, 20, 25, 25, 50kHz.

Signal Strength Indicator – a graduated bar shows the relative strength of the received signal.

Time-Out Timer – lets you set a maximum transmission time interval among 1,2,3,4,5,10,15,20 minute.

Earphone Jack and External Microphone Jack – let you connect an optional earphone, external

microphone, or combination headset for more flexible operation.

External Power Jack – lets you use an external power source for maximum output.

Back Light – makes your transceiver easy to operate in low -light situations.

Weather SAME Alert – lets you watch specific area message from NOAA and listen to the weather

broadcast.

Auto Power Off – lets your transceiver automatically turn off after a preset period of non-use.

Electronic Compass – lets you know the directions.

Cross Band Operation – lets you use the different frequency for transmitting and receiving.

Dual Watch – let you watch two different channels.

Air band receiver – lets you listen to air band broadcast.

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MANUAL CONVENTIONS

Your transceiver ’s buttons perform multiple functions. The abbreviation or symbol for a function is printed on
or above each button.

To activate certain transceiver features, you must press F (function) and another button at the same time.
Those key combination instructions are printed as the first button name, +, then the second button name. For
example, F+ TOT means hold down F while you press TOT.

Button names are printed in small, bold, capital letters such as CLR or MR. Words, symbols, and numbers
that appear on the display are printed using a distinctive typeface, such as 146.940 or MR.

FCC INFORMATION

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions : (1)
This device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.

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CONTENTS

Introduction to Amateur Radio
Preparation

Using Internal Batteries
Using Rechargeable Battery Pack
Testing Internal Batteri es
Using Non-Rechargeable Batteries
Using AC Power
Using Vehicle Battery Power
Connecting the Antenna
Attaching the Belt Clip
Attaching the Wrist Strap
Connecting a Microphone/Speaker

A Quick Look at the Display
Operation

Turning On/Off the Transceiver
Changing the Channel/Frequency Up/Down
Changing the Volume Up/Down
Changing the Bands
Using Monitor Button
Using universal type e key for Set mode
Repeater Operation

Memory Operation

Storing a Transmit/Receive Frequency (Memory Writing)
Recalling Memory (Memory Reader)
Checking Memory Location Settings
Clearing a Single Memory
Using the Calling Frequency Memory

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Scanning Operation

Scanning for Active Frequencies

Continues Tone Coded Squelch System Features

Using the CTCSS tones

Using DTMF Code

Transmitting a DTMF code from Memory
Transmitting a DTMF Code Using Direct Entry

Other Special Features

Locking the Keypad
Lighting the Display
Turning the Display and Keypad
Turning the Key Tone On and Off
Setting the Frequency Step
Power Save
Using Auto Power Off
Time-Out-Timer
Turing the Weather Radio Frequencies
Weather SAME Alert
Electronic Compass
TX Power Output Setting
Busy Channel Lock Out
Resetting
XBO Channel Operation
Dual Watch
Receiving Air band
Expanding TX Frequency range by Key pad Programming

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INTRODUCTION TO AMATEUR RADIO

Your transceiver is the perfect first radio for anyone entering the exciting world of amateur radio, s well as a
great additional transceiver for the experienced amateur radio operator. Your transceiver opens a door for you
to the world from almost anywhere! All you need is an Amateur Radio Operator’ s License (Technician Class
or higher) issued by the Federal Communications Commission (FCC). If you do not have a license, it is easier
than ever to get one, and help from licensed operators is available. Here are a few tips to help you get started.

You can turn on your transceiver and scan the entire band to hear what is going on; however, do not attempt to
transmit until you get your license. If you transmit without a license, you are in violation of federal law that
can lead to severe penalties. Note that ham operators take the FCC rules very seriously and want nothing to do
with “bootleggers ” – their term for people who operate without a license.

Find out if there is a ham radio club in your area. Most clubs welcome new transmissions, write to the
American Radio Relay League (ARRL) at the following address to find out how to cntact a local affiliate. The
ARRL is the national organization repre senting amateur radio in the United States. The league has more than
150,000 members. Most are ham operators, or members in the process of obtaining their license.

The American Radio Relay League
225 Main Street
Newington, CT06111
http://www.arrl.org

Starting for the license exams. Do not be intimidated by the word “study ” because most people can go from
knowing absolutely nothing about amateur radio to passing the Novice and Technician written exams in les s
than a month.

The exams test your knowledge of basic radio regulations and elementary radio theory. Many clubs hold
license classes which can be a fun and easy way to learn about amateur radio. There are good books, cassette
tapes, computer programs, and many other study aids available. Your local RadioShack store sells FCC
License Preparation study guides for amateur radio operator licenses. While you are no longer required to

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learn Morse code for a Technician Class license, we encourage you to learn it anyway so you can advance to
higher levels of operating privileges.

There is no fee to take the Novice exam. As soon as you pass the Novice exam, you can immediately take the
Technician exam. All license level tests are administered by a three-member Volunteer Examiner Team.
Contract the ARRL for a schedule of exam opportunities in your area.

The Technician Class license lets you use the transceiver to communicate directly with other operators, and
use repeaters for distant communication.

Amateur radio is a great hobby that has enriched the lives of millions of people all over the world. The ARRL
would be glad to hear from you if you need more information or would like to join!

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PREPARATION

You can operate your transceiver from any of four power sources;

l Li-Ion batteries
l Alkaline batteries
l AC Power (using an optional AC adapter)
l Vehicle battery power (using an optional DC adapter)

USING INTERNAL BATTERIES

Using Rechargeable Batteries

You can power your transceiver using two lithium ion batteries supplied as a sealed pack.
The battery pack has a built -in circuit that lets you recharge Li-Ion batteries. To charge the batteries, connect
an supplied external AC to DC adapter to the battery pack ’s CHG jack.
Caution) Please, clear the contact on the radio to the lithium ion battery pack with alcohol from time to time.

Testing Internal Batteries

To test the batteries, hold down PWR for about 1 second. The battery voltage briefly appears. The bars of
battery icon on LCD appears as a battery monitor indicator. There more bars in side the icon, the stronger the
batteries. When there are no bars in side of battery icon and flashes, recharge the battery or replace all the
batteries if Alkaline batteries are used as soon as possible.

Using Non-Rechargeable Batteries

You can power your transceiver using four alkaline batteries using alkaline battery.

USING AC POWER

You can power the transceiver using a 13.8V DC power supply with a size H Adapta-plug adapter. This is
available at your local RadioShack store.

USING VEHICLE BATTERY POWER

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