Diy ht antenna

If the threads are on the inside of the connector (Baofeng, Wouxon), you will need an SMA Female adapter. It can be stealthy against a background of trees or Feb 27, 2020 · 5. It provides detailed instructions and a demonstration of its use. The SRH320A is a 1/4 wave on 2 meters and 220 MHz, a 1/2 wave on 430 MHz. Lengthening the antenna further to 3/4 wavelength puts less radiation at the horizon and more into the high angle lobes. Get 12-gauge uninsulated copper wire to make your antenna. Make use of your tape to measure the length and confirm they are equal. Dec 18, 2012 · Connect the coax cable to the 2 parts of the driven element near where they enter the wooden beam. The developed antenna has been measured with a VNA in terms of SWR and S11 parameters. Big Bertha: DIY Antenna for Long Distance Reception. The video below does an excellent job describing this better than I can write it. Step 1: Find Your Local Transmission Tower. 15dBi and a frequency of 144-430MHz. Step 7: Mount Your DIY HDTV Antenna. Feb 5, 2018 · The counterpoise idea that you're talking about is commonly called a "tiger tail. It is 13. The Par Electronics Stressed Moxon brings this compact design to six meters. 4. uk/sch/i. Sep 24, 2019 · In the months since I made the first ABBREE video there has been alot of discussions about them. This antenna offers the widest frequency coverage over any dual Oct 6, 2023 · Connect the coaxial cable from the antenna to your TV or a signal analyzer device. Below are the plans for the antenna for bicycle mobile he described in the article. As you can see from the drawings and photo it’s an easy build, with all of the materials available from the local big-box home For GMRS channel 19 or 462. Bend the ground planes down about 30degrees for a good 50 ohm match. Nov 28, 2023 · In accordance with the “conventional wisdom”, the 5/8 wave antenna has about 3 dB gain over a 1/4 wave antenna, although we can see the high angle lobes starting to form in the pattern of the taller antenna. Please work with Nayoga to build this as a product for all bands – especially C variants – 155, 220, 440 use. html? Dual-band 2M/70cm HT Antenna Extended receive range: 118-160MHz 250-290MHz, 360-390MHz 420-470MHz 820-960MHz Gain: 146MHz 1. The American This page allows you to calculate the length for a 5/8 wave antenna. This formula is for a wire antenna. The beauty of this design is that it is cheap, simple, and easy to make with readily available materials. Cut two 17 3/4” long pieces of the tape. One thing I was wondering about is why the 2m and 70 cm elements aren’t perpendicular to one another as Jun 14, 2018 · What Is the Tiger Tail Antenna? The tiger tail is the other side of a dipole antenna. I like the Signal Stick for my HT. Wrap the cable’s inner wire around the short leg of the J, and the twisted outer wires around the long leg. The result shows that antenna has a bandwidth between 419. ebay. The performance gain is substantial, giving a 4 times power boost over the quarter wave antenna, equivalent to running 40 watts output. driven element to the solder cup of the center conductor of the SO-239 connector. However, there is something you should do before making that antennas pu Aug 7, 2015 · 57865. Many commercial rubber duck antennas - including the Kenwood one supplied with the TH-F7E - is resonant quite a way out of the band. Use a minimum wire size of about #20 to #18 outside. If the threads are on the outside of the connector (Yaesu, Icom, Kenwood) you will need an SMA Male adapter. 4dBi Jun 20, 2017 · Unfortunately, they don’t realize that there is a way to use that mag mount antenna more efficiently. HF antennas come in a variety of shapes and sizes. For those who may find these results hard to believe, based on experience of commercial rubber duck antennas, the SWR curve may help to reassure. 2. 5mm jack on each end along antenna is snug against the Tiger Tail antenna ring lug. The basic design is a simple resonant loop with a smaller coupling Antennas for the HF Bands. Strip both ends (top and bottom) about an 1/2 to 3/4 inch and bend each toward the center so they will overlap each other. However a splitter / combiner has a 3 db direction finding antenna and a portable radio. 5 inches apart. Whether you need a replacement antenna or just want to improve your HT's radiating efficiency and range, each Comet dual-band antenna offers a high-quality solution to your 2 meter and 70 centimeter needs. J-Pole antenna variations Source: WikiPedia. It consists of two Chebyshev low-pass / high-pass filters designed for the 2m and 70cm Amateur Radio bands. " It's around 20 inches or so and yes it is attached to the metal body or ground of the HT. This antenna is a 1/2 wave vertical dipole made out of RG-58/U coax. having a low impedance, passes the signal to the 2m output SK1. “Measure twice, mark well, saw once”. Measure down the board nine inches, then place another two points, 1. 900MHz (ISM) Hand-Held Antennas. Now a different measure: 4. Don't be limited in performance by VC encased wire antennas. The balun is essential for converting the antenna’s signal to a format your TV can use. - 1/4 wave 220 4 sections down. When rolled up, it is an extremely compact, pocket-sized antenna. It is a directional antenna that provides great performance and does not require a full scale, expensive tower. 17 (If you can't find aluminum rod or wire or welding rods, try metal coat hangers - they work too. Starting near the top, mark down two screw points, 1. People will get a quality aftermarked HT antenna and use the tiger tail for a much better signal. A Sharman RH-770 dual band antenna bought from Capital Stores. The rubber duck antenna that comes with most HTs, or a good 1/4-wave high-gain whip antenna, is the positive side of the dipole. By following step-by-step instructions and obtaining the necessary materials and tools, you can create a customized electroculture antenna tailored to your specific needs and garden size. How to build your very own flexible antenna!! This can be a fun project to do if you plan on needing several of them. Having Trouble? Licensing, Education & Training >> Newly licensed? Learn More >> Building Simple Antennas. After you overlap the wire, measure the entire length of the antenna. Antenna gain at any angle in the data shown can be derived by subtracting 21. 25-in. I saw this web page a couple months ago, and was thinking about building it, but haven’t gotten around to it yet. Clamp the junk-box section in vise to saw rod. As you can see from the drawings and photo it’s an easy build, with all of the materials available from the local big-box home Measure Beam (from the. Very impressive and plenty close enough. When you purchase things from our website, here are some of the efforts you are supporting: HamStudy aims to provide smarter study tools for anyone seeking to enter or advance in the Amateur Radio hobby. The J Pole. The J-pole antenna that oneeyeross told you about works very well also. Sep 25, 2022 · Let me show you how YOU can Build a compact, simple VHF Yagi antenna for your HT. ARRL Antenna Book, 18 th Edition, pp. - 5/8 wave 440 2 sections down. In fact, when used on your HT, it will Mar 6, 2020 · The Diamond SRH320A is a tri-band HT antenna for 2 meters, 220 and 430 MHz. 308/f for metric) MHz to calculate the element lengths. , Each Apr 8, 2012 · Welding rod might be better for a more permanent antenna. 1. BNC = 3/8 inch eye for 10-12 AWG wire (yellow) T&B #10RC-38X. And be able to do a little soldering. After measuring and before sawing, put 2 nuts on 71⁄2 “ end, one nut on 181⁄2” end. ) Build a Portable Groundplane Antenna QST July 1991, pp. This usually involves twisting the leads around the central screws or the midpoint of your antenna’s frame. Jun 22, 2018 · Space itself is 377 Ohms as I (and Google) remember. Here are some comments from Sebastian: This video is showing how to significantly improve the receive and transmit performance of any handheld radio using what's called a Tiger Tail or Animals and Pets Anime Art Cars and Motor Vehicles Crafts and DIY Culture, Race, and Ethnicity Ethics and Philosophy Fashion Food and Drink History Hobbies Law Learning and Education Military Movies Music Place Podcasts and Streamers Politics Programming Reading, Writing, and Literature Religion and Spirituality Science Tabletop Games Feb 16, 2024 · This video briefly shows how to setup and use the NanoVNA to sweep an antenna system (antenna, transmission line, transmatch, etc. An Easy to Build Rear Mount 2 Meter Yagi QST June 2012, pp 39-40 Aug 20, 2015 · Unscrew the antenna and look at the threads on the handheld. Items used are items from the "dollar box" at a hamfest tailgate and every Aug 12, 2011 · Just make a 1/4 wave vertical from a SK 259 socket with the vertical center about 625mm long and the four radials about the same ( 625mm = 24. Measure out and cut about 59 or 60 inches of ladder line. Sep 8, 2021 · In this video I've kept the time down to under 5 mins and easy to follow along. I have also seen where people will take two HDTV DB4 antennas and gang them and then use a splitter / combiner to feed the HDTV antennas. Measure out 8 separate pieces that are 17 inches (43 cm) long and mark the lengths with a marker. The photo on the left is my HDTV antenna that I built. - 1/4 wave 440 fully collapsed. Step 6: Receiving HDTV Images with Your DIY Antenna. They can range from a simple wire thrown into a tree or a complex quad beam on a 40' crank-up tower. Step 4: Connect the Balun. Note; when tightened the Tiger Tail antenna should be in contact with the vertical antenna and does not rotate. Cut 8 pieces of copper wire that are each 17 inches (43 cm). Apr 23, 2024 · Yes, you can build your own DIY electroculture antenna. com recommends adding between 5% to this calculated length for This ANTGAIN dual-band antenna covers a super wide frequency range of 140-162/435-467 MHz (less than 2:1 SWR) with 3 dB gain on VHF and 5. Mar 1, 2016 · Re-purposing / re-banding a cellular/PCS antenna into a dual band VHF UHF antenna. Mounts/Brackets only. Thomas & Betts ring-crimp-terminals: SMA = 1/4 inch eye for 14-16AWG wire (blue) T&B #14RB-14X. You will want to with the direction of the radio and tail to find the optimum working conditions. (Ditto for only 1. HT with vertical antenna Vertical antenna removed form RF connector Jul 10, 2014 · 4. us/HHnqzA 🛒 RAM . F4HWK. Some claim they have a hor It’s true that the best thing to upgrade on your ham radio handheld is its antenna. This is a full Power GMRS antenna that will work great with handheld and base units. A friend of mine give it this name, and it kinda stuck. The performance of either would be enhanced by adding a ¼ λ flexible-wire counterpoise, popularly known as a 'rat tail' or 'tiger tail'. The completed instillation of the Tiger Tail is illustrated in Figure 5 picture sequence. Jul 11, 2018 · The first reference that caught my eye was the $4 Ham Radio Satellite Antenna. You create a high-performance antenna for your modest HT by attaching a matched length of wire to the negative, or ground, side of Cool idea! The Tiger-Tail is a 1/4 wave +5 percent length of wire hung from the HT connector. Apr 16, 2016 · Receiver: 1 x 18 EUR - http://www. Dec 5, 2019 · In this, we discuss some common procedures that seem to be recommended in a plethora of videos extolling the virtues of counterpoise, be it called "rat tail" Feb 1, 2024 · Build the two separate sides of the dipole and ensure both sides are extended to the same length. This will need to be 41 3/8”. Consider a 144MHz (2m) signal coming in on the antenna socket SK2. You need to solder the 19. If you used Ham Study to get your licen The GMRS J-Pole is tuned for maximum performance on the 462 - 467 MHz General Mobile Radio Service and UHF public safety band. I used KG0ZZ's "$4 Ham Radio Satellite Antenna" design, and it works great! There's an associated video on Dave Tadlock, KG0ZZ's YouTube channel. Let's get after this install!🛒 RAM Seat Bolt Mount: https://geni. Feb 3, 2021 · The solution to the poor performance of the stock "rubber duck" antenna is simple: just add a "tiger tail" or counterpoise wire to the base of the HT antenna. 5 and 451. ) to measure its VSWR, Refl Comet Dual-Band HT Antennas encompass a wide range of features and specifications to enhance your handheld transceiver or scanner operations. Coax Cable Assemblies. Tell me in the comments below if you would make, or purchase an antenna like Build Your own Hex. Try to keep the tail as straight as possible and to one side of the radio. This article helps to explain the differences between them. The design comes from KI0AG and was originally published in the November-December 1997 AMSAT Journal. The ABBREE SMA-Female Dual Band is compatible with Baofeng UV-5R UV-82 BF-F8HP ham two-way radio. ABBREE SMA-Female Dual Band VHF/UHF 144/430MHz High Gain Soft Whip Foldable CS Tactical Antenna. Learn More. Your antenna is done! Most shortwave antennas require only one conductor or wire in the "elements" of the antenna so when using "wire" for antennas, you can use the least expensive types. Jun 4, 2023 · Download Article. However, if the only repeater you intend to use from your home is a 2m machine, and you have no interest in other VHF/UHF band operations, then a single band VHF antenna may be your choice. As for the external antenna at the end of your coax, a 1/4 wave ground plane antenna is a pretty good choice, and they’re pretty Apr 10, 2017 · In this video I show you 4 different no-solder antennas that I build in minutes from scraps of 75 ohm coax cable. 01/2012 issue of QST (pdf) Smiley 3-Band HT Antenna. Some hate them, some love them. In this video I show how to make a 2 meter dipole Antenna for use with a HT for a SOTA activation. You can build it cheaply from junk box parts. Choose the right wire for construction. (Hamuniverse. The hex beam has become a wildly popular antenna. The antenna resonates in order to match that 377 Ohms to 50 Ohms. GMRS radios are gaining in popularity daily; inexpensive and effective, these radios are redefining how families keep in Drill 1⁄2”. Attach the radials to the holes in the flange of the SO-239 connector with nuts and bolts. For VHF airband, I used 1-inch pvc, 8 turns of rg-58, and about 20-inches for each element length. My recommendation is to use an adapter with a pigtail instead of one Nov 2, 2020 · ANTENNA NIGHT PLAYLIST https://www. This semi-flexible antenna is black with bottom and center loading coils. Mar 11, 2024 · Common types include rubber duck antennas for handheld radios, magnetic mount antennas for mobile installations, and base station antennas for fixed locations. 5 inches (35 cm) tall and weighs about 1 ounce (30 g). These will serve as the driven elements. Many radios have a “collar” that make it difficult to use a ring terminal around the ground…maybe a add an external screw on the base of the antenna where the collar can be easily attached – the screw would of course connect to the antenna ground. The optimal length for a HT whip antenna would be ¼ λ. A. Although this seems to work, my thinking is that adding a second antenna typically yields 3 db of gain. The Nagoya 771 is a good HT antenna. Step 3: Cut the Coat Hangers. Steps to Success. youtube. The J Pole antenna is a popular antenna design among amateur radio operators because it is effective and easy to build. Unfortunately, the rubber duck antenna that came with it isn’t the best choice for maximum signal. 5 inches down for the next set, then another 4. 2dBi 446MHz 1. 5inches) for 120MHz. These EIRP tests also reveal the antenna pattern for 180 degrees of rotation. Solder the wires in place. 2 MHz with the respect of SWR of 2:1, which is more than enough for the 70 cm band (430-440 MHz). You Aug 12, 2011 · Just make a 1/4 wave vertical from a SK 259 socket with the vertical center about 625mm long and the four radials about the same ( 625mm = 24. At first I just tie-wrapped it all up, and then put it inside without too much detuning. 18-16 to 18. The tuned circuit L2/C2 is resonant at 144MHz and. Cutting the All-Thread. Similar to the 771 in performance, but you can coil it up when it’s off the radio to take up less space in a bag (where my HT often lives). Step 5: Catching the Waves. Signal Stuff is dedicated to enhancing the use of technology in the amateur radio licensing technology. Each type has its advantages and limitations. Check the signal strength and quality of each channel. The radiator should be 39 inches long for 2 meter operation. ’. With just a few parts and a little knowledge anyone can make a tiger tail antenna for their radio. With the tips of the driven element and reflector bent to nearly touch, it squeezes the width of the antenna into a much smaller space. 3 dB. They can be constructed with minimal suppli Mar 3, 2013 · Half-Wave Flower Pot Antenna – VK2ZOI. Search Youtube for Ground plane antennas. It looks like a very cool and easy project. The tuned circuit L3/C3. This will be the director of the antenna and will attach to the front of the antenna. The ANTGAIN has an overall length of 39 inches with a handy antenna fold over feature and is rated at 140 watts maximum power. No Holes Mobile Mount. Cut the tape at 35 1/8”. Your shooting for 58 inches total length after stripping and overlapping the wires. Invented by the Germans as Mobile Antennas. Easy peasy! Feb 4, 2014 · You can boost the performance of most any hand held type VHF/UHF radio or hand held scanner radio by adding a counterpoise. Consider the local radio resources available to you and how you wish to use them, and then decide what band Aug 26, 2020 · Two Meter Antenna. This appears to be a clone of the Step 4: Measurements. It has a tuned coil/spring which protects your delicate HT antenna connector, and is available with just Build a GMRS ground plane, it's really easy. All you need is a SO-239 chassis mount and some solid 12 gauge wire. The Smiley (pictured) operates - 1/4 wave 2M fully extended. Drill the bracket. Nov 6, 2022 · Mag mounts are a quick and easy way to get ham radio working in your car. Attach the two leads of the balun to the central points of your antenna structure. Its connector type is SMA-Female and gives you a gain of 2. Measure from original ends only because threads on ends are normally good. Here is a simple antenna design that is effective from 3 to 22 MHz. Nov 4, 2014 · The HAM operator on the left transmits a message which is received by the repeater, and the repeater then transmits the message out to the HAM operator on the right via a different channel. In fact, constructing your own antenna can be a cost-effective and rewarding project. Perform a channel scan on your TV or analyzer to detect the available channels. Cut an additional element from the tape. 33-34 Need a better antenna for your hand-held radio? Here's the answer. If you’re tired of people telling you your signal is weak, the simplest remedy is an improved antenna. Built back in 2009, as of 2018 this homemade digital TV antenna remained in use. If you've experimented with 5/8 wave antennas before and know of a better formula for your QTH, feel free to change the formula to suit. You don't even have to know how to solder!Check out the Ha Jan 5, 2016 · Attach the barrel adapter to the radio and the antenna to the barrel adapter. 650, a good middle point frequency, one half of our missing half-wave dipole comes out to 6 1/8″, a very manageable length for our tiger tail counterpoise. This is the reflector element. This makes up the missing half o There are several features which make the ubiquitous Twinlead J-Pole antenna a good addition to your emergency grab-n-go kit. 25-m, 70-cm, or 6-m band ops). Step 2: Preparing the Wooden Base. 7dBi 900MHz 3. 3 days ago · Diamond Antenna Dual-Band HT Antennas SRJF40A Antenna, Dual-Band, Super Flexible, HT/Scanner, High Gain 2m/70cm/Air Band to 900MHz, SMA female, 10 W, 16 in. Mounts with Coax. Cool idea! The Tiger-Tail is a 1/4 wave +5 percent length of wire hung from the HT connector. In the video I show you my way of building a very inexpensive and easy to bui May 26, 2020 · Step 0: Tools & Hardware to Build a DIY HDTV Antenna. Secure the coax cable. It’s likely your first Ham radio purchase was a 2 meter or dual-band HT. Step 4: Attach the V Wires to the Base. The answer is the ‘Bazooka Ground Plane. The material of the wire has almost nothing to do with it since the any 6" wire's resistance is probably less than a tenth of an Ohm. The antenna wire is one of the most important aspects of dipole antenna construction. Use a pair of wire cutters to snip the wires on your marks so you have 8 pieces. Studying with just practice exams is Jan 5, 2016 · Attach the barrel adapter to the radio and the antenna to the barrel adapter. The smaller rubber ducky, with its comparable performance, would win hands down for its convenience and ease of use. 5 inches, and then finally, a 9-inch gap for the final set. 4 dBm. You can also use these nuts and bolts to mount the antenna to some kind of bracket. 3. Apr 23, 2011 · The telescopic sections are quite stiff. In sum, the wire could be silver or lead with the same performance. Use the signal quality indicators on your TV or analyzer to assess the reception. co. It’s basically an end-fed omnidirectional half-wave antenna, matched to the feedline by a quarter wave transmission line stub. We cut our wire short, at 6″, with the connector making up the rest of the length. Oct 21, 2018 · The average value of the top three points at -10, 0 and 10 degrees is 23. Feb 27, 2015 · Here’s a small 2m / 70cm diplexer that is good for up to 10W of power, perfect for working satellites with a HT. I’ve posted a 15-meter Moxon video too. The reason for this is that it is designed to receive HDTV signals broadcast over longer distances. Finishing touch included wiping down the pvc and coax coil with Armor-All protectant. com/playlist?list=PL01YuCls6edYQkHejzJNAxZqX9eRBeG8BI have been wanting a versatile antenna that I can take with m Jun 8, 2020 · The advantages of these antennas are directional, good front-to-back, and smaller than a Yagi. Based on a resonant magnetic loop, it has high transducer gain (high sensitivity), and also very good directionality. Jun 20, 2017 · Unfortunately, they don’t realize that there is a way to use that mag mount antenna more efficiently. In use, it makes for a very effective antenna and provides about 3 db of gain with a low take-off angle. I just finished a dual band yagi (2m/70cm) for about $10 this past weekend. The DIY Ducky is tuned spot on the 2m band, because you made it so. This 50 ohm antenna can handle up to 10 watts. VHF Antennas. The size of the wire can be an important thing if the antenna is designed to be used outdoors in the weather. Trial #1: In the video a simple cable with a 3. Mobile VHF/UHF Dual-Band. It allows the average amateur to compete with the big boys for DX and without spending your retirement to do so. Black 14-16AWG stranded wire is soldered to the ring. The build quality of the antenna is not great but it is quite cheap. html?_nkw=diy+airband+receiverReceiver Case: 1 x 25 EUR [Not required] - http://www. Hardy and constructed for longevity, "Big Bertha" is also huge. Size and shape: Antennas come in a variety of shapes and sizes, each designed for different purposes. It uses the standard formula, 585/f (178. being resonant at 433MHz, exhibits a high impedance at 2m and so stops the 144MHz signal from reaching the 70cm output socket SK3. 2 dB gain on UHF. Secure the coax cable with a couple of zip ties. pf yu iz fu wf wl zn ml gt fs