Radio-shack HTX-420 User Manual download pdf

2002 RadioShack Corporation.

RadioShack and RadioShack.com are trademarks

used by RadioShack Corporation.

19-1108

OWNER’S MANUAL — Please read before using this equipment.

Thank you for purchasing a RadioShack HTX-420 2-Meter/70 cm Dual Band FM Amateur

Transceiver. Your 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.

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Amateur radio is a great hobby that has

enriched the lives of millions of people all

over the world. Your transceiver is the perfect

first radio for anyone entering the exciting

world of amateur radio, or 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 easy to get one,

and help from licensed operators is available.

Find out if there is a ham radio club in your

area. Most clubs welcome newcomers and

are glad to help you get your license. 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. Ham

operators take the FCC rules very seriously

and want nothing to do with “bootleggers” –

their term for people who operate without a

license.

±±

If you do not hear anyone talking about a

local club 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 members in the

process of obtaining their license.

The American Radio Relay League

225 Main Street

Newington, CT 06111

http://www.arrl.org

Start studying for the license exams. Most

people can go from knowing absolutely

nothing about amateur radio to passing the

Technician written exam in less 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

%106'065

Preparation .................................................................. 2

Using Internal Batteries ........................................... 2

Using AC or DC Power ............................................ 2

Connecting the Antenna .......................................... 2

Attaching the Belt Clip ............................................. 2

Attaching the Wrist Strap ......................................... 2

Connecting a Microphone/Speaker ......................... 2

A Quick Look At the Display ........................................ 3

Operation ..................................................................... 4

Manual Conventions ................................................ 4

Turning On/Off the Transceiver ................................ 4

Setting the Squelch Level ........................................ 4

Temporarily Opening Squelch .................................. 4

Using the Universal Type Keys ................................ 4

Selecting Frequencies (Direct Tuning) and Receiving

Transmissions .......................................................... 4

Transmitting ............................................................. 4

Understanding Repeaters ............................................ 5

Setting the Repeater Offset Frequency ................... 5

Turning Repeater Operation On/Off and Changing

The Offset Direction ................................................. 5

Memory Operation ....................................................... 5

Storing a Transmit/Receive Frequency .................... 5

Recalling Memory Locations .................................... 5

Checking Memory Location Settings ....................... 6

Clearing a Single Memory ....................................... 6

Using the Calling-Frequency Memory ..................... 6

Scanning Operation ..................................................... 6

Scanning for Active Frequencies ............................. 6

Scanning Standard Memory Locations .................... 6

Skipping Memory Channels While Scanning ........... 6

Continuous Tone Coded Squelch System Features

(CTCSS) ...................................................................... 6

Setting the CTCSS Tones ........................................ 6

Using the CTCSS Tones .......................................... 7

Using DTMF Code ....................................................... 7

Transmitting a DTMF Code ...................................... 7

Using the Transceiver with Packet Radio ................ 7

Locking the Keypad ................................................. 8

Lighting the Display ................................................. 8

Turning the Key Tone On and Off ............................ 8

Setting the Frequency Step ..................................... 8

Power Save ............................................................. 8

Using Auto Power Shutoff ........................................ 8

Limiting Transmit Duration (Time-Out Timer) ........... 8

Tuning the Weather Radio Frequencies .................. 8

Using the SAME Alert .............................................. 8

Using the Electronic Compass ................................. 9

Selecting the Transmit Power ................................ 10

Cross Band Channel Operation ............................. 10

Dual Watch ............................................................ 10

Receiving the Air Band .......................................... 10

Changing the Transmit Frequency Range ............. 10

FCC Information ........................................................ 10

Care ........................................................................... 10

ERR Display .......................................................... 10

Service and Repair .................................................... 11

Resetting the Transceiver ...................................... 11

Specifications ............................................................ 11

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If an icon appears at the end of a paragraph, go

to the box on that page with the corresponding

icon for pertinent information.

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— Warning

— Important

. — Caution ±

±±

± — Note

Full 16-Key DTMF (Dual-Tone Multi

Frequency) Keypad — lets you dial and

make telephone connections. See

“Transmitting a DTMF Code” on page 7.

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, or 50 kHz. See

“Setting the Frequency Step” on page 8.

SAME Weather Alert — uses Specific

Area Message Encoding (SAME) digital

information to determine and display the

level of weather events. See “Using the

SAME Alert” on page 8.

Electronic Compass — provides two letters to

indicate direction (such as SW or NW) and up to

three digits to show directional angle (such as

360°, 180°, 90° or 45°). See “Using the

Electronic Compass” on page 9.

±±

"016'"

±±

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.

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Summary of Contents

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Page 2 - 24'2#4#6+10

105'.'%6+0)"6*'"64#05/+6"219'4You can select one of the three transmitting power levels: High (no display), Mid (CC

Page 3

19-110804A02Printed in ChinaRadioShack CorporationFort Worth, Texas 761025'48+%'"#0&"4'2#+4If your transceiver is not per

Page 4 - 12'4#6+10

2about amateur radio. There are good books, cassette tapes, computer programs, and many other study aids available. Your local RadioShack store sells

Page 5 - 4'2' #6'45

3rubber dust cover from the SPK and MIC jacks on top of the transceiver. Then insert the plug of an optional voice-activated headset with microphone,

Page 6 - 5%#00+0)"12'4#6+10

412'4#6+10/#07#."%108'06+105Your transceiver's buttons perform multiple functions. The abbreviation or symbol for a function is pr

Page 7 - #%-'6"4#&+1

53. Hold down PTT (Push to Talk), then speak slowly and clearly into the microphone.4. Release PTT when you finish transmitting.70&'456#0&

Page 8

6location number appears beneath o. Then turn CH or press 8#or 9 to select a different memory location. To return to VFO, press .%*'%-+0)"/

Page 9 - 1&'5

74. Press 8 or 9, or rotate CH to select a tone frequency from the list on Page 7.5. Press or PTT to store the settings and exit.75+0)"6*'

Page 10 - %#4'

8(TNC). See the following diagram for a suggested connection. Refer to your TNC instructions for details..1%-+0)"6*'"-';2#&To

Page 11 - 52'%+(+%#6+105

9them to potentially ignore real weather warnings that can save lives.In 1994, NOAA began broadcasting SAME (Specific Area Message Encoding) codes alo

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Radio-shack HTX-420 User Manual

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