Cat. No. 19-1110
Please read before using this equipment.
10-Meter Transceiver


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   Summary of Contents for Radio Shack HTX-10

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    Cat. No. 19-1110 OWNER’S MANUAL Please read before using this equipment. HTX-10 10-Meter Transceiver...

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    FEATURES Your RadioShack HTX-10 10-Meter Transceiver is ideal for use in your vehicle. Its 25-watt SSB/FM and 7-watt AM output pro- vides the power you need to communicate, and its tuner covers the entire 10-meter Amateur Radio band (including the 28.3 to 28.5 MHz Novice band).

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    Important: 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 li- cense carries heavy penalties. Getting a license is easier than ev- er.

  • Page 4: Fcc Information

    MANUAL CONVENTIONS Your transceiver’s buttons perform multiple functions. The abbre- viation or symbol for a function is printed on, below, or above each button. To activate certain transceiver features, you must press PUSH (function) then another button. FUNC Button names are printed in this manual in small, bold, capital let- ters (such as ).

  • Page 5: Table Of Contents

    CONTENTS Introduction to Amateur Radio ..........6 Preparation ................8 Attaching the Microphone Holder ........8 Mounting the Transceiver ..........8 Connecting an Antenna ..........10 Connecting the Microphone ..........12 Connecting an Optional External Speaker ...... 12 Using Vehicle Battery Power .......... 13 Using the Transceiver as a Base Station ......

  • Page 6: Introduction To Amateur Radio

    INTRODUCTION TO AMATEUR RADIO This transceiver is a great intermediate-level tool for the experi- enced amateur radio operator. The transceiver opens a door for you to the world from almost anywhere! All you need is an Ama- teur Radio Operator’s License (Novice Class, or Technician Plus, or higher) issued by the Federal Communications Commission (FCC).

  • Page 7

    A Novice Class or Technician Plus (or higher) license lets you use the HTX-10 to communicate directly with other operators. Amateur radio is a great hobby that has enriched the lives of mil- lions of people all over the world. The ARRL would be glad to hear...

  • Page 8: Preparation, Attaching The Microphone Holder, Mounting The Transceiver

    MOUNTING THE TRANSCEIVER The most common mounting location for this transceiver is under a vehicle's dashboard. If you use the HTX-10 as a base station, however, you can place it on a desk, shelf, or table (see “Using the Transceiver as a Base Station” on Page 14).

  • Page 9

    If you are mounting the transceiver in a vehicle, choose a loca- tion where: • you can easily reach the transceiver. • wires and cables are clear of the vehicle's pedals or other moving parts. • the transceiver is not directly in front of heating vents. •...

  • Page 10: Connecting An Antenna

    4. Attach the transceiver to the mounting bracket using the supplied rubber washers and mounting knobs. (Rubber washers not shown) CONNECTING AN ANTENNA There are many different types of transceiver antennas for mobile transceivers. Each antenna type has its own benefits, so choose the one that best meets your needs.

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    Once you choose an antenna, follow its mounting instructions. Then route the cable to the transceiver and con- nect the cable to the jack on the back of the transceiver. Cautions: • Avoid routing the cable next to sharp edges or moving parts, which might damage the cable.

  • Page 12: Connecting The Microphone, Connecting An Optional External Speaker

    CONNECTING THE MICROPHONE 1. Align the slot on the bottom of the microphone’s plug with the ridge inside the jack. Then fully insert the plug into the jack. 2. Turn the plug’s locking nut clock- wise to tighten it. 3. Slide the microphone onto the microphone holder.

  • Page 13: Using Vehicle Battery Power

    To connect the external speaker to the transceiver, insert the speaker's plug into the jack on the back of the transceiver Note: Connecting external speaker disconnects the transceiv- er's internal speaker. USING VEHICLE BATTERY POWER Follow these steps to connect the transceiver to your vehicle’s bat- tery power.

  • Page 14: Using The Transceiver As A Base Station

    Caution: Do not connect the black wire to a non-metallic (plastic) part, or to any part insulated from the vehicle's chassis by a non-metallic part. 3. Connect the single connector end of the power cord to the connector on the back of the transceiver. USING THE TRANSCEIVER AS A BASE STATION Although this transceiver is designed mainly for mobile use, you...

  • Page 15

    Follow these steps to install the transceiver as a base station. 1. Mount the base station antenna as described in its owner's manual. Warning: Use extreme caution when you install or remove a base station antenna. If the antenna starts to fall, let it go! It could contact overheard power lines.

  • Page 16: A Quick Look At The Controls

    A QUICK LOOK AT THE CONTROLS — turns the radio on/off; adjusts the volume OFF/VOLUME — attenuates strong signals; reduces the micro- RF-G/MIC-G phone’s gain and SSB transmitting power — selects the frequency tuning step; turns the noise STEP/NB/1 blanker on/off; selects memory Channel 1 —...

  • Page 17: Operation, Setting Squelch And Receiving

    OPERATION SETTING SQUELCH AND RECEIVING 1. Rotate fully counterclockwise. SQUELCH 2. Rotate fully clockwise. RF-G 3. To turn on the transceiver, rotate clockwise OFF/VOLUME until it clicks. The display lights and the frequency appears. A bar graph also appears which shows the received signal’s strength.

  • Page 18: Transmitting

    Note: If the transceiver picks up unwanted weak transmis- sions, rotate slightly counterclockwise to decrease the RF-G transceiver’s sensitivity to signals. The transceiver blocks the weak transmissions. 6. Repeatedly press to select the desired band (FM, MODE AM, USB (upper sideband), or LSB (lower sideband)). 7.

  • Page 19: Notes On Ssb Reception

    3. To transmit, hold down the push-to-talk button on the micro- phone, hold the microphone 2–3 inches from your mouth, and speak in a normal tone of voice. appears along with a bar graph which shows the strength of your transmission. 4.

  • Page 20: Special Features, Using The Special Features

    SPECIAL FEATURES USING THE SPECIAL FEATURES Your transceiver has several advanced features that give you ad- ditional control and convenience while using it. This list provides additional information about your transceiver’s special features. Feature See: Step — let’s you change the incre- Page 21 ment you set to tune frequencies in the 10-meter band.

  • Page 21: Using Step

    Feature See: RF-G (RF Gain) — attenuates strong Page 26 signals. MIC-G (Microphone Gain) — Page 26 reduces the microphone gain and SSB transmitting power, Using STEP Repeatedly press to select the frequency step your trans- STEP ceiver displays when it shows a frequency. As you press STEP one of the three frequency digits flashes for about 2 seconds to show which digit is selected.

  • Page 22: Using Call, Using Scan

    Using CALL The transceiver’s call memory lets you quickly recall a specific frequency in memory Channel 2. Note: See “Using M-SAVE (Memory Save)” on Page 25 for more information about storing a frequency in memory channel 2. Press to recall the stored frequency at any time. The fre- CALL quency flashes.

  • Page 23: Using Lcr (last Channel Recall), Using M-load, Using Nb (noise Blanker)

    Using LCR (Last Channel Recall) Press to return to the last channel you selected. Using M-LOAD You can recall frequencies stored in memory Channels 1–5. Note: See “Using M-SAVE (Memory Save)” on Page 25 for more information about storing frequencies in memory channels. To recall a memory channel, press appears, then, M-LOAD...

  • Page 24: Using Shift, Using T-low (tone-low)

    Using SHIFT The transceiver’s shift function lets you set the transmit frequency shift from the receive frequency in either direction within the range of 0.0 Hz to 990 kHz. Follow these steps to set the frequency shift direction and offset frequency.

  • Page 25: Using M-save (memory Save), Using Fine (clarifier)

    Using M-SAVE (Memory Save) Follow these steps to save up to five frequencies into memory channels. 1. Select the desired frequency. 2. Press then appears. PUSH FUNC M-SAVE 3. While appears, press the desired memory channel num- ber. The transceiver stores the frequency you selected into the memory channel you selected.

  • Page 26: Using Rf-g (rf Gain), Using Mic-g (microphone Gain), Turning The Key Tone On And Off

    Using RF-G (RF Gain) When you receive an extremely strong signal, rotate coun- RF-G terclockwise to attenuate the signal. Using MIC-G (Microphone Gain) Rotate to adjust the transmitter’s microphone gain and MIC-G SSB transmitting power for the best audio quality. TURNING THE KEY TONE ON AND OFF The transceiver is preset to sound a tone each time you press a key.

  • Page 27: Care And Maintenance

    CARE AND MAINTENANCE Your HTX-10 10-Meter Transceiver is an example of superior design and craftsmanship. The following suggestions will help you care for your transceiver so you can enjoy it for years. Keep the transceiver dry. If it gets wet, wipe it dry immediately.

  • Page 28: Troubleshooting

    TROUBLESHOOTING If your transceiver is not working as it should, these suggestions might help you eliminate the problem. If the transceiver still does not operate properly, take it to your local RadioShack store for as- sistance. Problem Possible Causes Remedies The squelch might Adjust the Trouble with...

  • Page 29: Noise Reduction

    Problem Possible Causes Remedies The microphone’s Adjust Trouble with MIC-G gain might not be transmission properly set. (continued) The power cord Make sure the Transceiver might not be con- power cord is con- does not work nected. nected. at all. The power cord’s Replace the fuse fuse might be blown.

  • Page 30: Replacing The Fuse

    Your local RadioShack store has a wide selection of noise sup- pression accessories. REPLACING THE FUSE If the HTX-10 stops operating, you might need to replace the red power wire’s fuse with the supplied spare fuse. Caution: Do not use a fuse with ratings other than those speci- fied here.

  • Page 31

    Caution: The supplied fuse has the proper ratings. Make sure you replace a fuse only with another fuse of the same rating. 4. Reassemble the fuse holder by squeezing it together until it snaps shut.

  • Page 32: Specifications

    SPECIFICATIONS GENERAL Frequency Range ......28.000 MHz to 29.699 MHz Tuning Step ......1 kHz/10 kHz/100 kHz (selectable) Frequency Generation ......Digital PLL Synthesizer Antenna Connector ......50 ohm coaxial connector Microphone ........... Electret condenser type Operating Temperature ....–4° to 122°F (–10° to 55°C) Power Source .....

  • Page 33

    TRANSMITTER Power Output ........7w (AM), 25w (FM/SSB) Distortion ................5% Deviation ................. ±2 kHz S/N Ratio................40 dB Spurious Emission ..........–65 dB or better Battery Drain: At max output power ......AM Less than 3.0 A, FM Less than 5.0 A, SSB 5.0 A At no modulation .........

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  • Page 36

    Limited Ninety-Day Warranty This product is warranted by RadioShack against manufacturing defects in material and workmanship under normal use for ninety (90) days from the date of purchase from RadioShack company-owned stores and authorized RadioShack franchisees and dealers. EXCEPT AS PROVIDED HEREIN, RadioShack MAKES NO EX- PRESS WARRANTIES AND ANY IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE DURATION OF THE WRITTEN LIMITED WAR-...

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