Radio Shack HTX-400 Manuel utilisateur

Cat. No. 19-1104

OWNER’S MANUAL

Please read before using this equipment.

HTX-400

Mini Handheld 70cm FM

AmateurTransceiver

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FEATURES

Your RadioShack HTX-400 Mini Handheld70cm FM Ama-

teur Transceiver iscompact and lightweight, makingit easy to

carryalmost anywhere. The crystal controlledcircuitry provides

accurateand stable channel selection, making it an ideal choice

for your amateur communicationsneeds.

Note: You must have a Technician Class or higher Amateur Ra-

dio Operator’s License, and a call sign issuedbythe FCC, tole-

gally transmit usingthistransceiver. Transmittingwithout a

license carriesheavypenalties. Getting alicenseiseasier than

ever.See“Introduction to Amateur Radio” onPage7 for more in-

formation.

Herearesomeofyour transceiver’s features.

200 mW/2 Watt Output—the transceiver automaticallytrans-

mits at200 mWoutput whenpoweredby internal batteries, or at

2 Wattoutput whenpowered by an external9-volt power source.

CTCSS (Continuous Tone CodedSquelchSystemsubaudible

tone) — helps reduceinterferencefrom other nearby systems op-

erating on the same frequency. Encoding and decodingtone un-

locks squelchwhenreceived.

Repeater Offset —letsyou select anappropriateoffset valueto

match alocal repeater.

Scan — the transceiver scansfrequencyrangeandmemory

channels for transmissions.

Power Save — conserves battery power when the transceiver is

not transmitting or receiving.

ProgrammableFrequency Steps— let you set the frequency

incrementfortuningorscanning to 5, 10,12.5, 15,20,25, 50kHz,

or1 MHz steps.

All RightsReserved.

RadioShackis a registeredtrademark usedbyTandyCorporation.

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Alert Melody — you can set the radio to play a short, selectable

melody when it transmits, and play the same melody when it re-

ceives a tone encoded signal.

Signal Strength Indicator — a graduated bar shows the relative

strength of the received signal.

Time-Out Timer — lets you set a maximum transmission time in-

terval from 0 to 990 seconds to make the best use of repeater

transmission time.

Busy Channel Lock Out — prevents transmitting while the se-

lected channel is receiving a signal.

TX Delay — continues transmitting to prevent noise at the end of

a transmission as you release the push-to-talk (PTT) button.

Scan Delay — delays restart of scanning when the radio locks

onto a channel.

Earphone Jack and External Microphone Jack — let you con-

nect 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.

30 Memory Locations — let you store up to 30 frequencies and

other settings.

Back Light — makes your transceiver easy to operate in low-

light situations.

Key Lock — lets you lock the transceiver’s keys to prevent acci-

dentally changing settings.

We recommend you record your transceiver’s serial number

here. The number is on the transceiver’s back panel.

Serial Number ____________________________

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MANUAL CONVENTIONS

Your transceiver’s buttonsperform multiplefunctions. Theabbre-

viationor symbolfor a functionisprinted on,below, or above

eachbutton.

To activate certain transceiver features, you must press FUNC

(function) and another button at the same time. Those keycom-

binationinstructions are printed as first buttonname, +,thenthe

secondbutton name.For example, FUNC+LOCK means hold

down FUNC while you press LOCK.

Buttonnamesare printed in small,bold, capital letters such as

BEEP orSC.Words, symbols, andnumbers that appear onthe

displayare printed usinga distinctivetypeface suchas446.000

orBUSY.

FCC INFORMATION

Thisdevice complieswith Part15 of the FCC Rules. Operation is

subject tothe following two conditions: (1) This device may not

cause harmfulinterference, and(2) thisdevicemust acceptany

interferencereceived, includinginterferencethat may cause un-

desiredoperation.

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CONTENTS

Introduction to Amateur Radio .................................. 7

Preparation .................................................................. 9

Power Sources ....................................................... 9

Using Internal Batteries .................................. 9

Testing Internal Batteries .............................. 10

Using Vehicle Battery Power ......................... 11

Connecting the Antenna ...................................... 12

Attaching the Belt Clip ......................................... 13

Attaching the Wrist Strap ..................................... 13

Connecting a Microphone/Speaker ...................... 14

A Quick Look at the Controls .................................. 15

Operation ................................................................... 17

Understanding Repeaters .................................... 17

Receiving, Transmitting and Setting Squelch ....... 17

Scanning for Active Frequencies ......................... 19

Monitoring a Frequency ....................................... 19

Changing the Frequency Range .......................... 19

Locking the Keypad .............................................. 20

Lighting the Display .............................................. 20

Turning the Key tone On and Off ......................... 20

Using Memory Locations ..................................... 20

Using the Calling-Frequency

Memory Location .......................................... 20

Using Standard Memories ................................... 21

Storing a Transmit/Receive Frequency ......... 21

Storing a Repeater Offset Frequency ........... 22

Storing a Scanning Skip Setting ................... 22

Scanning Standard Memory Locations ......... 23

Locking Out (Skipping) Locations During

Memory Location Scanning .......................... 23

Using Subaudible Tone Squelch .......................... 24

Subaudible Tone Frequencies ...................... 25

Reversing the Offset ............................................ 26

Reversing the Transmit and receive Frequencies 26

Melody Options .................................................... 26

Using the Transmit Melody Alert ................... 27

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Using the Receive Melody Alert ................... 27

Special Features ....................................................... 28

Using the Special Features ................................. 28

Frequency Step ............................................ 29

Repeater Offset ............................................ 29

Power Save .................................................. 29

Time-Out Timer ............................................ 30

Scan Delay Time .......................................... 30

Transmit Delay Time ..................................... 30

Busy Channel Lockout ................................. 31

Troubleshooting ........................................................ 32

Care and Maintenance ............................................. 33

Resetting the Transceiver .................................... 34

Specifications ........................................................... 35

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INTRODUCTION TO AMATEUR RADIO

Your transceiver is the perfect first radio for anyone entering the

exciting world of amateur radio as well as a great additional trans-

ceiver for the experienced amateur radio operator. Your trans-

ceiver 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 Commis-

sion (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. Notethat

ham operators take the FCC rules very seriously and want noth-

ing 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 wel-

come newcomers and are glad to help you get your license.

There are thousandsof clubsacross the country, so there is prob-

ably one in or near your own community. Often, the staff at your

local RadioShack store can help you locate a club.

If you do not hear anyone talking about a local club in your area

as you listen to local transmissions, write to the American Radio

Relay League (ARRL), at the following address, to find out how

to contact a local affiliate. The ARRL is the national organization

representing amateur radio in the United States. The league has

more than 150,000 members. Most are ham operators, or mem-

bers in the process of obtaining their license.

The American Radio Relay League

225 Main Street

Newington, CT 06111

http://www.arrl.org

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Start studying for the license exams. Donot be intimidatedbythe

word“study,” for mostpeoplecan go from knowingabsolutely

nothing about amateur radioto passing the Noviceand Techni-

cianwritten examsin lessthan amonth.

The examstest yourknowledgeof basicradio regulations and el-

ementaryradio theory. Manyclubshold license classeswhich

can be a funandeasy way to learn about amateur radio. There

are good books, cassettetapes, computerprograms, and many

otherstudyaidsavailable.Yourlocal RadioShackstoresells

FCC

License Preparation

study guides for amateur radio operator li-

censes. While you are nolonger requiredtolearnMorse code for

a TechnicianClass license,we encourage youtolearnit anyway

so you can advance tohigher levels of operating privileges.

The examinersfor a Novicelicensetest canbeany twoham op-

eratorswhohold ageneralor higher class license and who areat

least 18years oldandare not related toyou. There is no fee to

taketheNoviceexam. As soon asyou pass the Novice exam,

you can immediatelytake theTechnician exam. There is a small

fee required for takingtheTechnician exam, and the test must be

administered by a three-member Volunteer Examiner Team.

Contact theARRLfor a scheduleof exam opportunities in your

area.

The Technician Classlicense letsyou use theHTX-400 tocom-

municate directly with other operators,and use repeaters for dis-

tant communication.

The ARRL staff helped usprepare this sectionofthe Owner’s

Manual. Amateur radiois agreat hobby thathas enriched the

lives of millionsof peopleall over theworld. The ARRL would be

gladto hear fromyou if youneedmore information or would like

tojoin!

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PREPARATION

POWER SOURCES

You can operate your transceiver from either of two power

sources:

• internal batteries

• vehicle battery power (using an optional DC adapter)

Using Internal Batteries

Your transceiver can use two AA batteries (not supplied) for pow-

er. For the best performance and longest life, we recommend Ra-

dioShack alkaline batteries.

Cautions:

• Use only fresh batteries of the required size and recom-

mended type.

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

(standard, alkaline, or rechargeable), or rechargeable bat-

teries of different capacities.

Follow these steps to install batteries.

1. Move the LOCK tab in the opposite direction of the marked

arrow on the bottom of the transceiver.

LOCK Tab (on bottom)

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2. Press down and slide the battery compartment cover in the

direction of the arrow marked on the cover.

3. Put the batteries into the compartment and on top of the

attached ribbon according to the polarity symbols (+ and –)

marked inside the compartment.

4. Replace the cover and slide the LOCK tab on the bottom to

secure the cover.

Testing Internal Batteries

To test the battery strength, rotate VOL/OFF clockwise on the top

of the radio until it clicks, then press C. Cappears in the lower

right corner of thedisplay.Then hold down thepush-to-talkbutton

and MO at the same time. BAT appears and the graduated bar

next to BAT indicates the battery strength. If the batteries are

weak, the battery symbol shows less than 4 bars. Replace both

batteries as soon as possible.

Cautions:

• Dispose of old batteries promptly and properly. Do not burn

or bury them.

• If you do not plan to use the transceiver with batteries for a

two week period, remove the batteries. Batteries can leak

chemicals that can destroy electronic parts.

19-1102.fm Page 10 Friday, March 19, 1999 4:08 PM

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