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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
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Transceiver. Your transceiver is compact and rugged, making it easy to carry almost anywhere.
Preparation .................................................................. 2
Using Internal Batteries ........................................... 2
The crystal controlled circuitry provides
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about amateur radio. There are good books, 75+0)"##"$#66'4+'5 "9#40+0)" " ý cassette tapes, computer programs, and You can power your transceiver using four R R Using the Lithium-Ion Rechargeable many other study aids available. Your local alkaline AA batteries (not supplied and Battery Pack RadioShack store sells FCC License available at your local RadioShack store) with When you remove the battery pack from the Preparation study guides for amateur radio the supplied battery holder. ". R
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rubber dust cover from the SPK and MIC The following schematic diagram shows the ."%#76+10". jacks on top of the transceiver. Then insert typical wiring for an external mic and Use only microphone and speaker accessories the plug of an optional voice-activated speaker. that do not share a common ground for the headset with microphone, or an optional speaker and the microphone. Doing otherwise communication headset, into the jacks. . ± ± ± ± might damage the transceiver. You can also conn
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setting mode. IGB IGB, L> L><< HF HFJJ, K>< K>< HFJ HFJ, HN HN JE JEDD;;, IGB IGB L> L><< HF HFJJ K>< K>
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8 9 3. Hold down PTT (Push to Talk), then 2. Repeatedly press or , or rotate CH speak slowly and clearly into the to change the offset to a new value microphone. ranging from .000 to 8.000 MHz. 7 4. Release PTT when you finish 3. Press until K>< K>< K>< K>< HFJ HFJ HFJ HFJ appears. transmitting. 8 9 4. Repeatedly press or , or rotate CH to change the offset to a new value 70&'456#0&+0)" ranging from .000 (no offset) to 8.000 MHz. 4'2'#6'45 A repeater is a radio that receives a signal o
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location number appears beneath . Then 2. To change the scan direction, press 8 o turn CH or press 8#or 9 to select a or 9 or rotate CH. different memory location. To return to VFO, 3. To stop on a frequency or to stop press . scanning, press SC or PTT. %*'%-+0)"/'/14;".1%#6+10" 5%#00+0)"56#0&"/'/14;" 5'66+0)5 .1%#6+105 To check all the settings stored in a memory 1. Press MR (so appears), then press o location, press MR, then rotate CH (or use 8 ± ± ± ±"016'"± ± ± ±" SC. The decimal
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8 9 4. Press or , or rotate CH to select a functions, which is handy if you are involved tone frequency from the list on Page 7. with repeater administration. You can also signal to another radio equipped to receive 5. Press or PTT to store the settings DTMF codes. and exit. 6 7 1. Repeatedly press or until ZJ ZJ ZJ ZJC< C< C< C< appears. If no DTMF codes are stored in 75+0)"6*'"%6%55"610'5 memory, U U U UýýýýUýU UýU UýU UýUýýUýU ýýUýU ýýUýU ýýUýUýU ýU ýU ýU and Zý Zý Zý Zýbbbb app
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(TNC). See the following diagram for a 1. Press F+APO (3). Auto Power Shutoff is suggested connection. Refer to your TNC normally disabled. e<< e<< appears. e<< e<< instructions for details. 2. Repeatedly press either 8 or 9, or turn CH to select a time period until power shutoff. You can select e< e<< <, )& )&, ,& ,&, e< e<< < )& )& ,& ,& /& /& or '( '(&& minutes. /& /& '( '(&& 3. Press PTT or to store your selection TNC HTX-420 Computer and exit. To turn off auto power-shutoff, press F+
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them to potentially ignore real weather The transceiver displays one of the following warnings that can save lives. codes when it receives an alert signal. M7HD M7HD M7HD M7HD for Warning In 1994, NOAA began broadcasting SAME (Specific Area Message Encoding) codes M7J9 M7J9 M7J9 M7J9> > > > for Watches along with their standard weather broadcasts IJC IJC IJC IJCJ JJ J for Statement from local stations in your area. SAME codes identify the type of emergency and the J;IJ J;IJ J;IJ J;IJ for T
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5'.'%6+0)"6*'"64#05/+6"219'4 4'%'+8+0)"6*'"#+4"$#0& You can select one of the three transmitting Repeatedly press until 77 appears to select 77 power levels: High (no display), Mid (C C the airband at the top of the display. Press C C appears), and Low (BB appears). To select the 8 or 9, or rotate CH to tune to the BB level, repeatedly press H/L. frequency you want to hear. The air band receiving range is 108 to 136.9875 MHz. %4155"$#0&"%*#00'." %*#0)+0)"6*'"64#05/+6" 12'4#6+10 (4'37'0%;"4
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4'5'66+0)"6*'"64#05%'+8'4 5'48+%'"#0&"4'2#+4 If the transceiver’s display locks up or the If your transceiver is not performing as it transceiver does not work properly after you should, take it to your local RadioShack store ."%#76+10". turn it on, you might need to reset it. . for assistance. Modifying or tampering with This procedure clears all the information you the transceiver’s internal components can To reset the transceiver, turn it off then hold have programmed into the trans
