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Realistic HTX-100 Mobile Transceiver (190-1101) http://web.archive.org/web/20040310085330/http://support.tandy.com/s...

1 of 1 7/28/2007 8:03 AM

Realistic HTX-100 Mobile Transceiver(190-1101)

Care and MaintenanceFeaturesInstallationOperationSpecificationsTroubleshooting

Exploded Views/Parts List

Detailed Parts List

Privacy Policy

HTX-100 Mobile Transceiver 190-1101 Care and Maintenance http://web.archive.org/web/20040331160715/support.tandy.com/support...

1 of 1 7/28/2007 8:04 AM

HTX-100 Mobile Transceiver(190-1101) Care and Maintenance Faxback Doc. # 39457

Your HTX-100 is an example of superior design and c raftsmanship.The following suggestions will help you care for yo ur transceiver soyou can enjoy it for years.

Keep the transceiver dry. If it gets wet, wipe it dry immediately. Liquids contain minerals that can corrode the e lectronic circuits.

Handle the transceiver gently and carefully. D ropping it can damage circuit boards and cases and can cause the unit to work improperly.

Keep the transceiver away from dust and dirt, w hich can cause premature wear of parts.

Wipe the transceiver with a dampened cloth occa sionally to keep it looking new. Do not use harsh chemicals, clean ing solvents, or strong detergents to clean the transceiver.

Modifying or tampering with the transceiver's inter nal components couldresult in illegal operation. If your transceiver i s not operatingproperly, take it to your local Radio Shack store. Our personnel can helpyou and arrange for service if needed.

(br/km-05/12/1997)

Privacy Policy

HTX-100 Mobile Transceiver 190-1101 Features http://web.archive.org/web/20040331160705/support.tandy.com/support...

1 of 3 7/28/2007 8:04 AM

HTX-100 Mobile Transceiver (190-1101) Features Faxback Doc. # 38131

Your Realistic HTX-100 10-Meter SSB/CW Mobile Trans ceiver is one of themost technologically advanced 10-meter transceivers available today.It is a perfect choice for a novice's first ham rad io, or as an additionto an established ham operator's equipment. We des igned your transceiverto be compact, durable, and ideal for mobile applic ations.

Although we made the HTX-100 transceiver small, we packed it with theseadvanced features:

RIT (Receiver Incremental Tuning) - permits y ou to fine tune the Control receiver to match the received signal.

10 Memory Channels - make it e asy to switch to the popular f requencies in your area.

High or Low Output Power - lets you switch between 25 Watts and 5 Wat ts of output power.

RF GAIN Control - allows yo u to increase or reduce the amoun t of gain for received signals.

CW and SSB Modes - allow you to send Morse code (CW) or c ommunicate by voice on the upper side band.

Note: You must have an FCC Radio Amateur Opera tor's License to legally transmit using your transceiver. Transmitting without a license carries heavy penalties.

Caution:

We do not warrant your transceiver to be waterp roof. If you use your transceiver around water, take care to prevent moisture from getting inside it.

For your important records, we urge you to reco rd the serial number of your transceiver in the space provided below. You will find the serial number on the back panel of the transcei ver.

Serial Number:___________________________

INTRODUCTION TO AMATEUR RADIO

We designed your HTX-100 transceiver to be the perf ect first radio foranyone entering the exciting world of amateur radio . From your car, home,or boat, you will find that your transceiver opens a door to the world -literally! All you need is a source of electricity , a suitable antenna,and, most important of all, an Amateur Radio Operat or's License issued bythe Federal Communications Commission (FCC).

You might already have a license,.. In fact, you mi ght have been a hamoperator for many years. But, if you do not have a license, you willfind that it is easy to get one, and that there is much help available.Here are a few tips to help you get started.

First, go ahead and hook up your transceiver as des cribed in "Installation,"Faxback Doc. # 39455. Use the receiver to tune aro und on the band to seewhat is going on. Do not even think of transmittin g until you get your license! That is very important. Transmitting wit hout a license is a violation of Federal law that can lead to severe pe nalties. Also, ham operators take the FCC rules very seriously and wan t nothing todo with bootleggers - their term for people who ope rate without a license.


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Second, find out if there is a ham radio club in yo ur area. There arethousands of clubs across the country, so there is probably at least onein or near your own community. The people at the s tore where you boughtyour equipment might be able to tell you. If not, and if you do not hearanyone talking about a local club in your area as y ou tune around the bandwith your receiver, write to the American Radio Rel ay League (ARRL) forinformation on how to contact their local affiliate . Most clubs welcomenewcomers and are glad to help you get your license .

Next, start studying for your license. Do not let the word study scareyou, because most people can go from knowing absolu tely nothing aboutamateur radio to passing the basic (Novice) class l icense exam in fewerthan 40 hours of study spread out over a couple of weeks. The exam testsyour knowledge of basic radio regulations, elementa ry radio theory, andslow speed Morse Code. Many clubs teach license cl asses (a fun and easyway to learn about amateur ratio), and there are go od books, cassettetapes, computer programs, and many other study aids available. The ARRLpublishes a book, "Tune in the World with Ham Radio " which is usuallypackaged with two tape cassettes and has all you ne ed to know.Radio Shack stores also sell FCC License Preparatio n packets for Novice,Technician, and General Class licenses.

You are now ready to take your exam. You do not ha ve to go to an imposingFederal office building in a big city to take the t est, because these daysthe FCC has authorized ham volunteers to give all t he exams. For a Novicelicense, the examiners can be any two ham operators with General or higherclass licenses that are at least 18 years of age an d are not related toyou. And the Novice exam is free!

The Novice Class license allows you to use your HTX -100 transceiverbetween 28.1 MHz and 28.5 MHz. You can transmit CW (Morse Code) on anyfrequency, but you can openly transmit voice on 10- meter band frequenciesfrom 28.3 MHz to 28.5 MHz. Your HTX-100 can tune u p to 29.6999 MHz, butthese higher frequencies are reserved for higher-cl ass licensees. Keep onpracticing and learning, and soon you will have leg al access to all thefrequencies accessible with your transceiver. Ther e is no rush, though,Your Novice license is good for ten years, and even then you can renew itindefinitely.

Eventually, you will want to get a higher class of amateur license, withmore privileges. Exams for Technician, General, Ad vanced, and Extra Classlicenses are given by three-member Volunteer Examin er Teams. Hundreds ofexam sessions are held across the country every mon th, most on weekends.(You can take the Novice exam from a Volunteer Exam iner Team, too, if itis more convenient.) When you are ready, you can g et a schedule of examopportunities in your area from the ARRL.

We have mentioned the ARRL several times. That is because the League isthe national organization that represents amateur r adio in theUnited States. The League has more than 150,000 me mbers; most of themham operators, but many are ham operators-to-be. H ere is the address ofARRL Headquarters.

The American Radio Relay League225 Main StreetNewington, CT 06111

The ARRL staff helped us prepare this section of th e owner's manual, andthey would be glad to hear from you if you need mor e information, or ifyou would like to join!

Amateur radio is a great hobby that has enriched th e lives of millions ofpeople the world over. Radio Shack takes pride in bringing to you theHTX-100 transceiver to enrich your life.

ACCESSORIES PROVIDED

Microphone


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Microphone holderTwo washers (for holder)Two screwsPower cordMounting bracketFour lock washersFour flat washersFour screws (for bracket)

(br/km-05/12/1997)

Privacy Policy

HTX-100 Mobile Transceiver 190-1101 Operation http://web.archive.org/web/20040331160711/support.tandy.com/support...

1 of 5 7/28/2007 8:06 AM

HTX-100 Mobile Transceiver(190-1101) Operation Faxback Doc. # 39456

GETTING STARTED

This section describes how to turn on and set the o perating controls ofyour transceiver the first time.

1. Set all the switches a shown.

2. Turn the VOLUME control clockwise to turn on yo ur transceiver. Set the volume at about the midpoint.

3. Adjust the SQUELCH control counterclockwise unt il you hear a hissing sound. Then, slowly rotate the control clockwi se until the hissing stops.

Your transceiver is now ready to tune-in to the action.

TUNING YOUR TRANSCEIVER

Setting the Frequency Step

1. Turn on your transceiver and select the SSB or CW mode by pressing MODE. SSB or CW appears on the display to indi cate the mode.

2. Press [STEP]. The underline moves to the next digit. This underline shows the digit that increments or decrements w hen you use the tuning knob or the UP and DOWN buttons.

Press [STEP] a few more times. Each time you p ress [STEP] the underline moves.

3. Tune to a frequency using the tuning knob (see "Using the Tuning Control") or the UP and DOWN buttons (see "Using the UP and DOWN Buttons").

Using the Tuning Control

1. Press [STEP] so that the underline is under the digit by which you want to increment or decrement.

2. Turn the tuning control clockwise to increase t he frequency.

3. Turn the tuning control counterclockwise to dec rease the frequency.

Hint:

If you are moving to a distant frequency, start with a large step. As you get closer reduce the stepping frequency . For a very large jump, see "Using the 500K Button."

Note:

When you reach either end of the frequency rang e, the transceiver "Wraps around" to the other end of the range. So, if the frequency is 29.6999 and you increase the frequency by .0 01, the new frequency is 28.0009.

Using the UP and DOWN Buttons

Your transceiver has two sets of UP and DOWN button s. One set is on thefront of the transceiver and the other set is on yo ur microphone. Eachset operates in the same manner, so follow these in structions to useeither.

1. Press [STEP] to set the stepping frequency.


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2. Press UP to go up one frequency step or DOWN to go down one frequency step. If you hold down either button longer th an 1/2 second, your transceiver steps rapidly through the frequenci es.

Scanning Hint:

If you are randomly scanning, trying to find so meone that is transmitting, press and hold either button whil e watching the RF POWER/SIGNAL meter. When you pass the activ e frequency, the indicators come on briefly. Stop scanning, and manually step to the active frequency.

Fine-Tuning with RIT

RIT means Receiver Incremental Tuning. This is jus t a fancy way of sayingfine-tuning. The one difference in this control, i s that this onlyfine-tunes the receiver. When you transmit, your t ransceiver uses theexact frequency displayed. Use this control if som eone else's transmitteris a little off-frequency. Tune up or down with th is control until theincoming signal sounds the best.

Using the 500K Button

The [500K] button is handy if you need to get rapid ly to the other end ofthe band from where you are currently tuned. Press ing [500K] causes thefrequency to increase by .5 MHz (500 kHz).

USING THE RF GAIN CONTROL

When you have established a conversation, or if you are monitoringa conversation, you can increase or decrease the le vel of the signalreceived by your transceiver. If you are monitorin g a nearby high-powerunit, the signal strength could cause the signal to distort. Turn theRF GAIN control counterclockwise to decrease the am ount of RF gain andmake the signal more "readable." If you are monito ring a low-powered,distant unit, turn the RF GAIN control clockwise to increase the amount ofRF gain and boost the incoming signal.

USING F.LOCK/OUT

When the F.LOCK/OUT switch is set to the F.LOCK pos ition, you cannotchange the tuned frequency. Use this to prevent ac cidentally changing thefrequency when you have tuned to an interesting or important broadcast.Set the F.LOCK/OUT switch to OUT to allow you to ch ange frequencies.

USING THE NB/OUT SWITCH

The NB/OUT switch allows you to turn on and off the noise-blanker circuit.The noise-blanker circuit greatly reduces or elimin ates noise generated byautomotive ignition, electrical motors, or other de vices that mightgenerate spurious RF noise. Normally, leave the NB /OUT switch set to NB.

USING THE RF POWER/SIGNAL LED INDICATORS

Five LEDs function as an RF Power meter to indicate the relativetransmission output power in the transmission mode, and as a signalstrength meter to indicate the relative strength of the received signalin the reception mode.

TRANSMITTING

Remember, before you can transmit, you must have a FCC Amateur RadioOperator's License. Also, be sure you know your tr ansmit privileges.

Transmission Power

Your transceiver has two power output levels - 5 wa tts and 25 watts.Regulations require that you use the minimum power necessary to maintainreliable communications. As a rule, for local comm unications, pull out


3 of 5 7/28/2007 8:06 AM

the RF GAIN control. This switches your transceive r to low power(ham operators call this QRP - the Q-signal for red uced power). If theother party has trouble receiving your signal, push in the RF GAIN controlto switch to 25W.

Transmitting CW (Morse Code)

1. Select a frequency.

2. Press [MODE] so that CW appears in the display.

3. Plug in the code key.

4. Start keying. Your transceiver automatically b egins transmitting, and generates a CW tone each time you operate the k ey. Your transceiver switches to receive one second after your last key press.

Note:

See "Using TX/RX" for information on transmitti ng continuously.

Transmitting SSB (Voice)

1. Select a frequency higher than 28.3000 MHz.

2. Press [MODE] so that SSB appears in the displa y.

3. Press the push-to-talk button on the microphone to talk, and release the button to listen.

Using the TX/RX Switch

In most situations, just leave the TX/RX switch set to RX. If, however,you are sending a long CW message, it might be easi er to send with thetransceiver constantly in the transmit mode. To do this, simply set theTX/RX switch to TX. To listen for a reply, you mus t set the switch backto RX.

MEMORY CHANNELS

Your transceiver has 10 memory channels you can use to store and recallimportant frequencies.

Storing a Frequency in Memory

1. Press [MEMORY], then UP or DOWN until the desir ed memory number (0-9) appears in the display.

2. Select a frequency to store using the tuning co ntrol.

3. Select a transmit mode (CW or SSB).

4. Press [STORE] to store the frequency and mode i n the memory.

Recalling a Frequency from Memory

1. Press [MEMORY]. MEMO appears in the display.

2. Press UP or DOWN until the desired memory appea rs.

3. To return to normal tuning, press [MEMORY].

ADVANCED INFORMATION

DIGITAL COMMUNICATIONS

Several exciting operation modes are now available to the novice ortechnician class amateur ratio operator. These are packet radio andseveral forms of RTTY (radio tele-type). These mod es let you send


4 of 5 7/28/2007 8:06 AM

information from your computer to other computers u sing your ham radio.For more in-depth information concerning interfacin g your computer to theham world, we recommend you read Digital Communicat ions with AmateurRadio, available at your local Radio Shack store. The followinginformation is to help you use digital devices with your HTX-100.

Receive-to-Transmit Turnaround Time................ ..................40 ms

1 - Microphone Input

2 - Push-To-Talk*

3 - Channel Down*

4 - Channel Up*

5 - 8 Volts (Power Indicator)

6 - Audio Out

7 - Microphone Ground

8 - Ground

* Connect to Ground for function.

10-METER BAND PLAN

The following chart gives the latest information on the "gentlemen'sagreement" that ARRL members follow when using the 10-meter band.

Frequency Operating Mode Note

28.000 - 28.070 CW

28.070 - 28.150 RTTY

28.150 - 28.190 CW

28.100 - 28.200 CW New Beacon Ban d*

28.200 - 28.300 CW Old Beacon Ban d* Until 1990

28.300 - 29.300 Phone

29.300 - 29.510 Satellites

29.510 - 29.590 Repeater inputs

29.600 FM simplex calling frequ ency


*Beacon bands are reserved for special stations. Do not transmit in these bands.

A WORD ABOUT NOISE

Your vehicle generates electrical noise that can ca use interference onyour transceiver. Since the receiver section of yo ur transceiver is verysensitive, it picks up even the smallest noise sign als and amplifies them.Any noise that you hear from the transceiver is alm ost totally fromexternal sources. The receiver itself is exception ally quiet. If thenoise is continuous and fairly loud, it cannot be t otally eliminated bythe automatic noise limiter circuit or the noise bl anking circuit.You must solve the problem at its source. To find out if the noise isfrom your ignition system, try this simple test. T urn off your ignitionswitch, then set it to ACC (accessory). This turns off the ignition, butsupplies power to the transceiver. The noise proba bly disappears,


5 of 5 7/28/2007 8:06 AM

suggesting that the source of the noise is your veh icle's ignition orother electrical system.

You can identify ignition noise because it varies w ith the speed of theengine. Ignition noise consists of a series of pop ping sounds. There aremany things that can be done to reduce this type of noise.

Use only the radio suppression-type high-voltag e ignition wire (spark-plug and coil cables). Most new cars co me equipped with this type of wire.

Inspect the ignition wire and all connections. Old ignition wire can develop leaks, resulting in noise.

If the noise persists, replace the spark plugs with types that have built-in suppressor resistors. Be sure to use the correct type of spark plug for your vehicle.

Other sources of noise are:

Generator/alternator

Voltage regulator

Gauges

Static Discharge

You can efficiently reduce or eliminate most of the se noises by installingbypass capacitors at the devices various voltage po ints. Check your localRadio Shack store for a selection of noise reductio n accessories.

(br/km-05/12/1997)

Privacy Policy


1 of 5 7/28/2007 8:05 AM

HTX-100 Mobile Transceiver(190-1101) Operation Faxback Doc. # 39456

GETTING STARTED

This section describes how to turn on and set the o perating controls ofyour transceiver the first time.

1. Set all the switches a shown.

2. Turn the VOLUME control clockwise to turn on yo ur transceiver. Set the volume at about the midpoint.

3. Adjust the SQUELCH control counterclockwise unt il you hear a hissing sound. Then, slowly rotate the control clockwi se until the hissing stops.

Your transceiver is now ready to tune-in to the action.

TUNING YOUR TRANSCEIVER

Setting the Frequency Step

1. Turn on your transceiver and select the SSB or CW mode by pressing MODE. SSB or CW appears on the display to indi cate the mode.

2. Press [STEP]. The underline moves to the next digit. This underline shows the digit that increments or decrements w hen you use the tuning knob or the UP and DOWN buttons.

Press [STEP] a few more times. Each time you p ress [STEP] the underline moves.

3. Tune to a frequency using the tuning knob (see "Using the Tuning Control") or the UP and DOWN buttons (see "Using the UP and DOWN Buttons").

Using the Tuning Control

1. Press [STEP] so that the underline is under the digit by which you want to increment or decrement.

2. Turn the tuning control clockwise to increase t he frequency.

3. Turn the tuning control counterclockwise to dec rease the frequency.

Hint:

If you are moving to a distant frequency, start with a large step. As you get closer reduce the stepping frequency . For a very large jump, see "Using the 500K Button."

Note:

When you reach either end of the frequency rang e, the transceiver "Wraps around" to the other end of the range. So, if the frequency is 29.6999 and you increase the frequency by .0 01, the new frequency is 28.0009.

Using the UP and DOWN Buttons

Your transceiver has two sets of UP and DOWN button s. One set is on thefront of the transceiver and the other set is on yo ur microphone. Eachset operates in the same manner, so follow these in structions to useeither.

1. Press [STEP] to set the stepping frequency.


2 of 5 7/28/2007 8:05 AM

2. Press UP to go up one frequency step or DOWN to go down one frequency step. If you hold down either button longer th an 1/2 second, your transceiver steps rapidly through the frequenci es.

Scanning Hint:

If you are randomly scanning, trying to find so meone that is transmitting, press and hold either button whil e watching the RF POWER/SIGNAL meter. When you pass the activ e frequency, the indicators come on briefly. Stop scanning, and manually step to the active frequency.

Fine-Tuning with RIT

RIT means Receiver Incremental Tuning. This is jus t a fancy way of sayingfine-tuning. The one difference in this control, i s that this onlyfine-tunes the receiver. When you transmit, your t ransceiver uses theexact frequency displayed. Use this control if som eone else's transmitteris a little off-frequency. Tune up or down with th is control until theincoming signal sounds the best.

Using the 500K Button

The [500K] button is handy if you need to get rapid ly to the other end ofthe band from where you are currently tuned. Press ing [500K] causes thefrequency to increase by .5 MHz (500 kHz).

USING THE RF GAIN CONTROL

When you have established a conversation, or if you are monitoringa conversation, you can increase or decrease the le vel of the signalreceived by your transceiver. If you are monitorin g a nearby high-powerunit, the signal strength could cause the signal to distort. Turn theRF GAIN control counterclockwise to decrease the am ount of RF gain andmake the signal more "readable." If you are monito ring a low-powered,distant unit, turn the RF GAIN control clockwise to increase the amount ofRF gain and boost the incoming signal.

USING F.LOCK/OUT

When the F.LOCK/OUT switch is set to the F.LOCK pos ition, you cannotchange the tuned frequency. Use this to prevent ac cidentally changing thefrequency when you have tuned to an interesting or important broadcast.Set the F.LOCK/OUT switch to OUT to allow you to ch ange frequencies.

USING THE NB/OUT SWITCH

The NB/OUT switch allows you to turn on and off the noise-blanker circuit.The noise-blanker circuit greatly reduces or elimin ates noise generated byautomotive ignition, electrical motors, or other de vices that mightgenerate spurious RF noise. Normally, leave the NB /OUT switch set to NB.

USING THE RF POWER/SIGNAL LED INDICATORS

Five LEDs function as an RF Power meter to indicate the relativetransmission output power in the transmission mode, and as a signalstrength meter to indicate the relative strength of the received signalin the reception mode.

TRANSMITTING

Remember, before you can transmit, you must have a FCC Amateur RadioOperator's License. Also, be sure you know your tr ansmit privileges.

Transmission Power

Your transceiver has two power output levels - 5 wa tts and 25 watts.Regulations require that you use the minimum power necessary to maintainreliable communications. As a rule, for local comm unications, pull out


3 of 5 7/28/2007 8:05 AM

the RF GAIN control. This switches your transceive r to low power(ham operators call this QRP - the Q-signal for red uced power). If theother party has trouble receiving your signal, push in the RF GAIN controlto switch to 25W.

Transmitting CW (Morse Code)

1. Select a frequency.

2. Press [MODE] so that CW appears in the display.

3. Plug in the code key.

4. Start keying. Your transceiver automatically b egins transmitting, and generates a CW tone each time you operate the k ey. Your transceiver switches to receive one second after your last key press.

Note:

See "Using TX/RX" for information on transmitti ng continuously.

Transmitting SSB (Voice)

1. Select a frequency higher than 28.3000 MHz.

2. Press [MODE] so that SSB appears in the displa y.

3. Press the push-to-talk button on the microphone to talk, and release the button to listen.

Using the TX/RX Switch

In most situations, just leave the TX/RX switch set to RX. If, however,you are sending a long CW message, it might be easi er to send with thetransceiver constantly in the transmit mode. To do this, simply set theTX/RX switch to TX. To listen for a reply, you mus t set the switch backto RX.

MEMORY CHANNELS

Your transceiver has 10 memory channels you can use to store and recallimportant frequencies.

Storing a Frequency in Memory

1. Press [MEMORY], then UP or DOWN until the desir ed memory number (0-9) appears in the display.

2. Select a frequency to store using the tuning co ntrol.

3. Select a transmit mode (CW or SSB).

4. Press [STORE] to store the frequency and mode i n the memory.

Recalling a Frequency from Memory

1. Press [MEMORY]. MEMO appears in the display.

2. Press UP or DOWN until the desired memory appea rs.

3. To return to normal tuning, press [MEMORY].

ADVANCED INFORMATION

DIGITAL COMMUNICATIONS

Several exciting operation modes are now available to the novice ortechnician class amateur ratio operator. These are packet radio andseveral forms of RTTY (radio tele-type). These mod es let you send


4 of 5 7/28/2007 8:05 AM

information from your computer to other computers u sing your ham radio.For more in-depth information concerning interfacin g your computer to theham world, we recommend you read Digital Communicat ions with AmateurRadio, available at your local Radio Shack store. The followinginformation is to help you use digital devices with your HTX-100.

Receive-to-Transmit Turnaround Time................ ..................40 ms

1 - Microphone Input

2 - Push-To-Talk*

3 - Channel Down*

4 - Channel Up*

5 - 8 Volts (Power Indicator)

6 - Audio Out

7 - Microphone Ground

8 - Ground

* Connect to Ground for function.

10-METER BAND PLAN

The following chart gives the latest information on the "gentlemen'sagreement" that ARRL members follow when using the 10-meter band.

Frequency Operating Mode Note

28.000 - 28.070 CW

28.070 - 28.150 RTTY

28.150 - 28.190 CW

28.100 - 28.200 CW New Beacon Ban d*

28.200 - 28.300 CW Old Beacon Ban d* Until 1990

28.300 - 29.300 Phone

29.300 - 29.510 Satellites


29.600 FM simplex calling frequ ency


*Beacon bands are reserved for special stations. Do not transmit in these bands.

A WORD ABOUT NOISE

Your vehicle generates electrical noise that can ca use interference onyour transceiver. Since the receiver section of yo ur transceiver is verysensitive, it picks up even the smallest noise sign als and amplifies them.Any noise that you hear from the transceiver is alm ost totally fromexternal sources. The receiver itself is exception ally quiet. If thenoise is continuous and fairly loud, it cannot be t otally eliminated bythe automatic noise limiter circuit or the noise bl anking circuit.You must solve the problem at its source. To find out if the noise isfrom your ignition system, try this simple test. T urn off your ignitionswitch, then set it to ACC (accessory). This turns off the ignition, butsupplies power to the transceiver. The noise proba bly disappears,


5 of 5 7/28/2007 8:05 AM

suggesting that the source of the noise is your veh icle's ignition orother electrical system.

You can identify ignition noise because it varies w ith the speed of theengine. Ignition noise consists of a series of pop ping sounds. There aremany things that can be done to reduce this type of noise.

Use only the radio suppression-type high-voltag e ignition wire (spark-plug and coil cables). Most new cars co me equipped with this type of wire.

Inspect the ignition wire and all connections. Old ignition wire can develop leaks, resulting in noise.

If the noise persists, replace the spark plugs with types that have built-in suppressor resistors. Be sure to use the correct type of spark plug for your vehicle.

Other sources of noise are:

Generator/alternator

Voltage regulator

Gauges

Static Discharge

You can efficiently reduce or eliminate most of the se noises by installingbypass capacitors at the devices various voltage po ints. Check your localRadio Shack store for a selection of noise reductio n accessories.

(br/km-05/12/1997)

Privacy Policy

HTX-100 Mobile Transceiver 190-1101 Troubleshooting http://web.archive.org/web/20040331160719/support.tandy.com/support...

1 of 1 7/28/2007 8:06 AM

HTX-100 Mobile Transceiver(190-1101) Troubleshooting Faxback Doc. # 39458

IF YOU HAVE PROBLEMS

We hope you do not have any problems with your tran sceiver, but if you do,try these suggestions.

1. If you have problems receiving:

Be sure VOLUME is set to a high enough leve l.

Be sure SQUELCH is not set too high.

Confirm the antenna is the right type, and is properly connected.

Be sure the TX/RX switch is set to RX.

2. If you have problems transmitting:

Be sure the antenna cable is the right type , and is properly connected.

Be sure you fully press the push-to-talk sw itch.

Be sure the microphone cable is securely pr essed into the MICROPHONE jack.

3. If the transceiver does not work at all:

Confirm the fuse is not blown. If it is, r eplace it with a 6-amp slow-blow fuse.

Be sure the power cable is properly connect ed.

RESETTING YOUR TRANSCEIVER

If your transceiver is subjected to a transient sta tic charge, the displaymight lock up. If this occurs, follow this procedu re to reset yourtransceiver. This procedure clears any frequencies you have stored intochannels.

1. Turn off power and remove the power cord.

2. Remove the tuning control knob.

3. Use a small metal probe, such as a paper clip, to short the exposed jumper wire to the transceiver's chassis.

4. Replace the tuning control knob and connect the power cord.

5. Turn on the transceiver and confirm the display works properly.

(br/km-05/12/1997)

Privacy Policy

Realistic HTX-100 Mobile Transceiver 190-1101 Detailed Parts List http://web.archive.org/web/20040331160659/support.tandy.com/support...

1 of 5 7/28/2007 8:07 AM

190-1101 MOBIL TRANCEIVER HTX-100 Faxback Doc. # 21286

To order parts call 1-800-843-7422 or visit your lo cal RadioShack store.

Reference # Cat.No. Description NP Part #--------------------------------------------------- --------------------- 11318540 1N4003A 11319241 1N5401 11319373 1N60P 11319639 DIODE 1SS119 FAST RECT SI 1SS119 Q401 Q403 Q404 USE 1TD0793 1TD0013 REPLACED BY 1TD07 93 1TD0013 Q402 10511616 XSTR M6TB SI PNP LO-PW 1TD0104 10511616 1TD0104 10516458 1TD0793 11330503 REPLACED BY 2TR01 95 2SB525 10532232 2SC1674 11331535 2SC1675 11331576 REPLACED BY 2TR03 58 2SC1730 11331741 2SC1923 11331998 REPLACED BY 2TR04 20 2SC2166 10519239 REPLACED BY 2TR06 98 2SC945 Q034 XSTR 2SC2086D T09 2 2TR0415 2TR0415 Q024 Q027 11483682 XSTR 2SC3242AE T0 92 2TR0597 11483682 2TR0597 2TR0698 11390036 MODULATOR 7 PIN D IP AN612 L301 COIL,LE-246 D0.6 3 1/2T CA0428 PLL105MHZ VCO CA0428 L315 COIL,INDUCTOR MOL DED 10UH CA0433 L012 L013 L313 10558740 COIL,LB-689 CARRI ER OSC CA0822 L003-005 COIL,LB-691 IF CA0823 L008 L026 10558757 COIL,LB-692 IF AM P TX MIX CA0824 L001 COIL,LB-693 NOISE BLANKER CA0825 L007 COIL,LB-694 IF AM PLIFIER CA0826 L002 COIL,LB-695 RF TR ANS CA0827 L019 COIL,LD-221 RF CA0828 L024 10558765 COIL,LD-228 AT050 2T-3012 CA0829 10558765 MATCHING TRANS CA0829 L020 COIL,LD-275 MATCH NG TRANS CA0830 L017 L018 10558773 COIL,LD-230 MATCH NG TRANS CA0831 L015 COIL,LE-092 6 1/2 T LPF CA0832 L006 COIL,INDUCTR LZ-0 51 470UH CA0833 SP0305-471K MOLDE D CA0833 L312 10558781 COIL,LB-682 PLL M IX CA0834 L303 L304 L311 COIL,LB-683 PLL M IX CA0835 L302 10558799 COIL,LB-684 105MH Z VCO CA0836 L321 10558807 COIL,LB-685 22MHZ VCXO CA0837 L317 COIL,LB-686 LOCAL OSC CA0838 L318 COIL,LB-687 LOCAL OSC BPF CA0839 L319 COIL,LB-688 LOCAL OSC BPF CA0840 L309 COIL,INDUCTOR LZ- 051 CA0841 MOLDED CA0841 L314 COIL,INDUCTOR LZ- 051 CA0842 MOLDED CA0842 L025 COIL,LE-201 D2.4 3 1/2TRF CA1547 L014 COIL,27MHZ LE-096 TX CA2030 8 1/2T LPF CA2030 L021-023 10567824 COIL,BEADS LD087 CA8742 10567824 LD087 BF04-3*5*1 CA8742 L009 L011 COIL,470UH RF IND UCTOR CA8752 MOLDED CA8752 L316 COIL,INDUCTOR LZ0 44 CA8968 262LY-682K CA8968 FT002 10569036 FILTER,FL-285 10. 695MHZ CB0133 10569036 X'TAL FILTER CB0133 FT003 10569044 FILTER,FL-328 TX BPF CB0134


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FT001 FILTER,FL-329 RX BPF CB0137 L016 COIL, CHOKE 27MHZ LE-093 CB2612 7 1/2T LPF CB2612 C402 10577567 22000PF +-10 5 0V CER CDR223KJBC 10577567 CASE 1206 PKG OF 5 CDR223KJBC C406 C419 .01UF +-20 1 6V CER CJ103MDCCC 10579746 PKG OF 10 CJ470JJBCC Y401 10587970 RESONATOR,2PIN YY -548 CER CV0026 10587970 CSA2.000MK CV0026 X301 10589117 CRYSTAL,10.2417KH Z CX0080 X001 10595262 CRYSTAL,10.6975 Q X-122 CX1014 X302 10595270 CRYSTAL,QX-287 22 .0MHZ CX1015 11655909 DIODE SI LLL4148 DD00005 D033 10620953 DIODE VARISTOR KB -262 DV0005 10620953 MA29W-A(TA) DV0005 D036 D037 10620961 VARISTOR,NVS-03 DV0006 D306 10620979 DIODE KV1330A VAR ICAP DV0007 10620979 TRANSISTOR DV0007 D010 D011 10624294 DIODE MC301 DX0985 10624294 DX0985 D004 USE DX1970 DX1073 REPLACED BY DX197 0 DX1073 D024 DIODE ZN HZ5C1 DX1097 DX1097 D401 D405 D406 D408 10626216 USE DD00005 DX1673 D409 10626216 DX1673 10627131 DIODE HZ-3B-2 HZ- 3B-3 DX1970 D301-305 10629178 DIODE 1SV113 SI DX2562 10629178 DX2562 D407 10629343 DIODE ZN HZ-6A2 DX2619 10629343 DX2619 3 HOLDER,LED ABS BL ACK HB0278 YW501-503 CLAMPER, WIRE HC3240 68 PLATE, SPRING KNO B HC3252 YI504-508 BUSHING, TRANSIST OR HC3416 AFTER DATE CODE 8 A8 HC3416 16 SHIELD CASE,SECC 0.8T HC5271 21 SHIELD PLATE,SPTE 0.3T HC5273 NON OIL HC5273 32 10683811 INSULATION PLATE, PVC .35T HC5274 33 10683829 INSULATION PLATE, 0.35T HC5275 10683829 PVC HC5275 57 10694537 SCREW 3.5X8 TAPPI NG HD3043 10694537 FOR MIC. CLIP HD3043 67 10694552 SCREW,3X8 P TIGHT BIND NI HD3109 51 10694594 SCREW 3X5 FLAT,BE LT CLIP HD4018 31 WASHER,INSULATION 0.5T HD8183 PVC 0.5T BLACK HD8183 F501 10698322 FUSE 6.00A 250V F AST BLOW HF1116 10698322 PKG OF 5 HF1116 10714780 SCREW TT BH M3X6 BNI (8) HW1901101 J502 10720654 JACK,MIC MALE 8P JK-467 J0165 J501 10726040 CONNECTOR M-TYPE J0843 10726040 JK-426 J0843 J504 10727089 JACK,2P PHONE 3.5 MM J0960 10727089 JK-010 W/O WASHER J0960 J003 J004 10730711 JACK,EARPHONE 3.5 MM J1545 10730711 3 PIN J1545 J503 10732204 JACK, DC POWER CO NNECTOR J5272 J301 CONNECTOR,2 PIN M ETAL JE0018 (LOCAL OUT) JE0018 J302 10740421 CONNECTOR,5267-08 A 8 PIN JE0102 10740421 PLL MICOM CONN JE0102 J303 10740785 CONNECTOR,JACK 52 67-03A JE0382 NOT STOCKED K0000X 6 10759926 KNOB,CHANNEL ABS DK GRAY K1881 10759926 ASSEMBLY K1881 7 10759934 KNOB,PUSH ABS DK GRAY K1882 8 10759942 BUTTON,CHANNEL AB S DK GRY K1883


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9 10759959 KNOB,ABS DARK GRA Y K1884 10759959 ASSEMBLY K1884 PL501 10790624 LAMP,PILOT 8V 150 MA L0108 10790624 W/COVER RUBBER (G REEN) L0108 D601-603 D605 D606 10796910 LED,DIODE LA0078 10796910 LA0078 LC401 10800035 LCD,DL-032 21 PIN LB0038 11391604 9 PIN SIP LB1423N IC301 IC501 11468972 IC LM340T8 TO220 T REG 8V LM340T8 11468972 LM340T8 REPLACED BY MC000 1 M3156 MC501 10804706 MICROPHONE,COMPLE TE MK389 MA0020 10804706 600 OHM,DYNAMIC MA0020 10808384 BRACKET,MICROPHON E MC0001 10808483 TYPE MTG SCREWS MC0014 11379633 SILICON NPN MFR477 10822641 MANUAL,SERVICE 19 -1101 MS1901101 10844462 XEROX COPY MU1901101 IC302 10874162 IC,SM5152A1 PLL 9 PIN SIP MX0884 10874162 MX0884 10877231 USE LM340T8 MX1449 IC305 10877249 IC,PLL0305A 18 PI N DIP MX1450 10877249 MX1450 IC303 IC,M54460L PRESCA LER 8PS MX1451 MX1451 IC405 10877256 IC,L78M05CV REGUL ATOR MX1452 10877256 MX1452 IC404 10877264 IC,M51953BL RESET 5P SIP MX1453 10877264 MX1453 IC402 10877272 IC,UC1208 UP 64P FLAT PAK MX1454 10877272 MX1454 IC401 10877280 IC,LH5008TP LCD D RIVER MX1455 10877280 FLAT PACK MX1455 10883239 IC,M5223L OP AMPS DUAL 8P MX2265 IC304 IC306 10894129 S042P MIXER MX3919 10894129 14 PIN DIP MX3919 IC403 10894293 HD14093BP NAND TR GR MX3960 10894293 14 PIN DIP MX3960 IC001 USE MX2265 MXP0040 REPLACED BY MX226 5 MXP0040 PKG OF 10 N0092ECCC R416 R426 R427 USE NDR0196EBC ND0196EBC REPLACED BY NDR01 96EBC ND0196EBC REPLACED BY NDR01 96EBC ND0196EBCB R406 USE NDR0216EBC ND0216EBC REPLACED BY NDR02 16EBC ND0216EBC R406 USE NDR0216EBC ND0216EBCB REPLACED BY NDR02 16EBC ND0216EBCB R411 R429 USE NDR0257EBC ND0257EBC REPLACED BY NDR02 57EBC ND0257EBC R411 R429 USE NDR0257EBC ND0257EBCB REPLACED BY NDR02 57EBC ND0257EBCB R401-403 R405 USE NDR0281EBC ND0281EBC R417-419 R REPLACED BY NDR02 81EBC ND0281EBC R422 R424 R425 R428 ND0281EBC REPLACED BY NDR02 81EBC ND0281EBCC R412 R413 R415 R421 USE NDR0371EBC ND0371EBC REPLACED BY NDR03 71EBC ND0371EBC REPLACED BY NDR03 71EBC ND0371EBCB R414 USE NDR0445EBC ND0445EBC REPLACED BY NDR04 45EBC ND0445EBC R416 R426 R427 10950194 RES CBF 1/8W 1K 5 % NDR0196EBC 10950194 CASE 1206 PKG OF 5 NDR0196EBC R406 10950285 2.2K 5% 1/8W CBF RES NDR0216EBC 10950285 CASE 1206 PKG OF 5 NDR0216EBC R411 R429 10950418 5.6K 5% 1/8W CBF RES NDR0257EBC 10950418 CASE 1206 PKG OF 5 NDR0257EBC R411 R429 5.6K 5% 1/8W MLG RES NDR0257EBG CASE 1206 PKG OF 5 NDR0257EBG


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R401-403 R405 10950491 RES CBF 1/8W 10K 5% NDR0281EBC R417-419 R 10950491 CASE 1206 PKG OF 5 NDR0281EBC R422 R424 R425 R428 10950491 NDR0281EBC R412 R413 R415 R421 10950848 RES CBF 1/8W 100K 5% NDR0371EBC 10950848 CASE 1206 PKG OF 5 NDR0371EBC R414 10951085 1M 5% 1/8W CBF RES NDR0445EBC 10951085 CASE 1206 PKG OF 5 NDR0445EBC RR405 RESISTOR ARRAY,HA -099 8PS NY0115 4R1M 47K NY0115 RR403 RR404 RR406 RESISTOR ARRAY,HA -100 NY0116 6R1M 47K NY0116 RR401 RESISTOR ARRAY,HA -117 NY0117 4 47K AXIAL LEAD NY0117 RR402 RESISTOR ARRAY,HA -121 NY0118 8 47K AXIAL LEAD NY0118 VR011 VR301 VR302 POT,SEMI-FIXED 10 0 OHM P6004 VR304 10973733 POT 5KB SEMI-FIXE D P6557 10973733 RT-182 TT24R HORI ZONTAL P6557 VR006 10973741 POT 3KB SEMI-FIXE D P6558 VR012 10973758 POT 1KB SEMI-FIXE D RT-182 P6559 VR013 10973790 POT 20KB SEMI-FIX ED P6642 VR002 10973832 POT SEMI-FIXED 10 0KB P6685 VR001 VR004 VR005 POT,10KB SEMI-FIX RT-182 P6820 VR303 P6820 VR009 10973972 POT, SEMI-FIXED 2 00KB P6825 VR503 10978047 POT,RES RV-650 PA0127 10978047 SQUELCH VB12L PVB 20F B50K PA0127 VR504 10978054 POT,VAR RES RV-68 6 50KA PA0128 10978054 VOL/ON/OFF SWITCH PA0128 VR502 10978062 POT,VAR RES RV-69 2 10KB PA0129 10978062 RIT CONTROL PA0129 VR501 10978070 POT,VAR RES RV-69 3 1KB PA0130 10978070 RF GAIN W/PULL SW ITCH PA0130 S613 11054756 SWITCH,ROTARY SR- 409 S0136 11054756 TUNING SWITCH S0136 S601-603 11067402 SWITCH,SLIDE SA0104 11067402 SSFYP22-14.58 PCB MOUNT SA0104 S605-608 S610 11073384 SWITCH,PUSH 6 PIN SD0073 11073384 SD0073 S611 S612 11077427 SWITCH,TACT SW-56 0 SMALL SF0042 11077427 SKHJAB SF0042 SP501 11081510 SPEAKER,8OHM 5W M IDRANGE SP0020 11081510 4500HZ 3 1/2" 77M M DIA SP0020 STOCKED CAT# 22- 120 TA0000X 10892511 MIXER TA7320P T001 11100666 TRANSFORMER,CHOKE TF-380 TB0241 11393402 AF PWR AMP 16 PIN DIP TDA1905 FOR THIS UNIT W0000X WA511 11114493 CORD, DC POWER W/ PLUG W3150 11114493 21-550 W3150 WA501 11117033 CABLE,COAXIAL WZ- 229 WA0062 WA511 USE W3150 WA0100 REPLACED BY W3150 WA0100 WA506 11117363 WIRE ASSY,W-71389 WA0101 FC501 11127040 CABLE,FLAT WF-064 3-70-3 WF0118 FC502 11127057 CABLE,FLAT WF-059 3-90-3 WF0119 PCB ASSY,MAIN XB2414 11140571 PCB ASSY,FRONT XB2415 PCB ASSY,PLL XB2416 PCB ASSY,MICON XB2417 11187143 W/PLATE DISPLAY P C SILK Z2748 12 11187150 CASE,BOTTOM SB-K0 8 1.0T Z2749 11187150 VINYLTOP BLACK ME TAL Z2749 13 11187168 CASE,TOP SB-K08 1 .0T Z2750 11187168 VINYLTOP BLACK ME TAL Z2750 11232931 PLATE LCD YUPO PA PER .15T ZC0035 NON OIL ZC0036

(This list was generated on 03/03/2004)


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