80 meter delta loop antenna

With the antenna calculation program EZNEC, the setup is theoretically prepared and documented with the inexpensive antenna analyzer miniVNA or graphically documented. For the 10- through 40-meter bands, you will have less than a 2:1 SWR across the entire band. Thats actually all you have to do to start the calculations and see the results. The left picture is identical to the right one, but I have moved the diagram so that you can see the triangle from above as a two-dimensional structure. few! 5x1 quality "both ways".For those doing the math, call the remaining 5 a lot of detail on gain (see ref #4 below) in his article so I won't get The antenna is a 60 foot dipole, bent into a rectangle, and fed at one corner with Radio Shack TV Twinlead into a MFJ 4:1 balun and tuned with a LDG Z11 Pro autotuner. enamelled copper wire, 2x stainless Steel (A4) M6 eye (Strain relief), 2x heat shrink tube for antenna connection. I did learn however, both 300 Note: Dimension "A" is not the length of the wires on, the sides of the Delta Loop but only the height the apex. I am new to HF. You will also need a feed line choke or better yet, just get the Hybrid 4:1+1:1 in a single box. But not 102 MPH, for sure!!! This added height will be how high the base of the antenna will be above ground. Technical assistance provided by Zach. Comment document.getElementById("comment").setAttribute( "id", "a83b46cfc120fc48eba63655d8cdb058" );document.getElementById("bf02c2270e").setAttribute( "id", "comment" ); Save my name, email, and website in this browser for the next time I comment. Contact the site with comments or questions. Never will Go back to a dipole or G5RV again. bands.After gleaning all the info in the articles referenced below, This Delta Loop is a three-sided antenna suspended high in the air by vertical supports, such as tall evergreen trees. Tuning the 40/80 meter coil loaded inverted v dipo EFHW 49:1 Transformer Construction and Deployment, Four Element Yagi Antenna for Ham Radio 70cm Band, HF Indoor Loop Antenna DIY-Simple & Easy to Build. N6JSX: A regular, traditional 160 ant such as an inverted-L smokes this ant on 160.as it should. scratching my head!). This antenna works as a Full Wave Loop on 80 Meters and also works as a 2 wavelength open loop or Bi-Square on the 40 Meter band. 1983I am sold!I have been telling other ops about how According to Rich, this antenna is resonant at 3.650 MHz. To build the largest and most complete Amateur Radio community site on the Internet - a "portal" that hams think of as the first place to go for information, to exchange ideas, and be part of whats happening with ham radio on the Internet. Tune Around!SEARCHCQ-Calling All I had the chance to compare a 130ft horizontal loop with a 130ft end fed and they were pretty much a wash on 40-10 with the EF being easier to hang. Product Code:EFHW 49:1unun 80 / 40 / 20 15/ 10 m 200W Short with coil. Loop Antenna Notes.updated Dec. 2012 . After a week I decided to feed it from the Often times on 80m (What length, what balun?). feet of wire and a tuner. At the relatively low antenna height, the antenna at 80m is naturally a steep spot in the direction of 90 degrees upwards, at 45 degrees elevation it has 3 dB less. Moving to any angle is easy with EZNEC. Your email address will not be published. This antenna is resonant at 3.650 MHz-~-~~-~~~-~~-~-Please watch: "Minelab Manticore fir. The LGD 100 does not chew long on 160 meters and as I drop bands, the chewing drops like a rock. To build this antenna you need a lot that is at least 100 feet across. Since a loop antenna next to the dipole is probably the simplest antenna shape, I could use EZNEC or with the help of the simple and precise introduction of the necessary parameters and let the antenna calculate. Click here for a detailed building description. The former, barely used long wire was used for the loop, for the other half I took another type of insulated copper strand. This BalUn has a fantastic common mode current attenuation of over 30 dB. The feed line is about 30' of 8U to a 4/1 current Balun. The Ultimate Guide to Working Ham Radio Satellites, My 3 Favorite Antennas for Portable Ham Radio (HF), Slot Antenna with parabolic dish for 2m and 70cm, Installing a new vertical ham radio antenna, Off Center Fed Dipole (OCF) Antenna-Ham Radio Q & A, Building a copper-tape VHF window antenna. But I did not even want to go, The trollstigen a roadtrip on norways most beautiful roads, The Trollstigen A road trip on Norways most beautiful roads Of the Trollstigen in Norway fixed me since I first spotted him in a photo. BD4.DX worked on 17 meters was KL7 and OH1. This antenna is also rated at the full legal limit on all modes. We use cookies to ensure that our website runs as smoothly as possible. On the internet I got some tips, partly with contradictory legends, which made me curious. Check You can get multiband performance by using a wide-range antenna "tuner", a 4:1 balun, and parallel feed line, such as 450 ohm window line. The above images are automatically generated by EZNEC from the entries in the table "wires" must register. This has all sorts of nasty effects, think of: interference, EMI, RFI disrupted radiation pattern of the antenna, restless noise level. It outperforms dipoles and OCF antennas. The actual length of the individual wire segments and thus the total length I could in the o.a. It did however work as an awesome 160 receive antenna option. 573. The height will be about 70 ft at two corners and 40 ft at the low corner. For Amateur Radio Antenna Topics and Discussions, stay here. Theoretical considerations and preparations. using the antenna 4 years. My preferences have now changed, so I had to do something for the two bands. The diagram indicates a high narrow band of the two wish bands. The latter also had a rope, which I once shot with the bow of a tail over the tip of a pine for the suspension of a long-wire. In the column Conn, the connection points automatically enter, e.g. 7 Delta Loops for 7 MHz. In fact now that I am retired, when I build and install another flavor of the week(an addiction I think) the first test is against this loop. Anyone gauge the performance difference with this vertical Delta-loop using coax vs. ladder-line? It is fed at the top (90 feet) with RG 213 (200 foot run to the shack) through a 4:1 current balun. The part wire no. This is post 2454 in a continuing series of simple ham radio antennas. the pulleys) for final wire sag adjustments. weeks of casual operating! A multi band inverted delta loop antenna project that can be used from 40 to 10 meters band with full details and analysis of antenna performances on each band, document includes EZNec reports and setup pictures, 1996-document.write(new Date().getFullYear()) The DXZone.com - Terms of Use, Copyright & Privacy Policy, [ Hits: 1002 | Votes: 4 | Rating: 7.25 ], [ Hits: 2760 | Votes: 6 | Rating: 3.17 ], [ Hits: 4915 | Votes: 18 | Rating: 7.11 ], [ Hits: 2763 | Votes: 7 | Rating: 4.86 ], [ Hits: 65323 | Votes: 68 | Rating: 6.66 ], [ Hits: 9614 | Votes: 18 | Rating: 3.83 ], [ Hits: 32807 | Votes: 35 | Rating: 6.16 ], [ Hits: 15602 | Votes: 47 | Rating: 7.43 ], [ Hits: 3874 | Votes: 6 | Rating: 5.33 ], [ Hits: 2038 | Votes: 4 | Rating: 3.75 ], [ Hits: 25985 | Votes: 5 | Rating: 3.6 ], [ Hits: 6903 | Votes: 3 | Rating: 8.33 ], [ Hits: 20377 | Votes: 15 | Rating: 3.28 ], [ Hits: 1441 | Votes: 6 | Rating: 3.17 ], [ Hits: 4278 | Votes: 3 | Rating: 3.33 ], [ Hits: 7666 | Votes: 6 | Rating: 7.67 ], [ Hits: 1763 | Votes: 4 | Rating: 3.25 ], [ Hits: 12797 | Votes: 18 | Rating: 6.34 ], [ Hits: 1471 | Votes: 4 | Rating: 5.75 ], [ Hits: 2310 | Votes: 16 | Rating: 6.13 ], [ Hits: 7020 | Votes: 13 | Rating: 7.54 ], [ Hits: 7118 | Votes: 7 | Rating: 7.28 ], [ Hits: 6697 | Votes: 8 | Rating: 4.62 ], [ Hits: 81072 | Votes: 41 | Rating: 4.88 ], [ Hits: 1779 | Votes: 11 | Rating: 8.55 ], [ Hits: 3690 | Votes: 13 | Rating: 5.92 ], [ Hits: 2059 | Votes: 19 | Rating: 6.12 ], [ Hits: 3928 | Votes: 9 | Rating: 6.55 ], [ Hits: 9963 | Votes: 4 | Rating: 6.75 ], [ Hits: 11083 | Votes: 10 | Rating: 6.5 ], [ Hits: 12961 | Votes: 8 | Rating: 7.5 ]. https://www.youtube.com/watch?v=TqE_W_0Le0k&ab_channel=RichRodgers. The chart below will give you the actual dimensions per band so you can see if you can fit this type of antenna at your location. Manual 1:1 BalUn 150 Watt for dipole antennas, Manual 1:1 BalUn 800 Watt, for dipole antennas, Manual 1:2 BalUn 600 Watts for Delta-loop & Quad-loop antennas, Manual 1:9 UnUn 600 Watts for long-wire antennas, Manual 1:49 UnUn for End Fed antennas 100 Watt, Manual 1:49 UnUn for End Fed antennas 250 Watt, Manual 1:49 UnUn for Mini End Fed antenna, Antenna impedance Theory and practice examples, Antenna radiation pattern depending on length and height, 80 meter Deltaloop antenna including 1:2 BalUn DIY kit, Be the first to review 80 meter Deltaloop antenna including 1:2 BalUn DIY kit. A full-size Delta Loop, fed in the bottom corner, is a good low angle radiator and is great for working DX. The 4:1 balun was chosen because the impedance of the feedpoint of the antenna for each band is: Since you specified that you need to run coax into your shack, it is best to transform the impedance at the antenna in this case and run coax all the way into the shack. The diagram nicely shows the resonances at 3.6 MHz and their multiples. HF & ShortwaveLicense StudyLinksMidi MusicReading RoomRepeater Basics By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Don't let deed-restricted properties (HOA/CC&R) stop you from enjoying Amateur Radio. Please share to your friends: Using the air conditioner correctly: this is how it gets cool in the car quickly, Air conditioning for the car pleasant coolness inside the vehicle. This project involves a management team of volunteers who each take a topic of interest and manage it with passion. How high off the ground? It loads on 80-10 meters, but I haven't tried making any QSOs on 80 with it. loop on 10 meters and a rectangular loop on 20 meters, (50+ countries in 3 The N3FJZ antenna system. I agree with the praise of the true differential tuner like the Johnson Matchbox, and also with the greatest bargain of all time the Radio Shack 300 ohm twin cable. The base of the Delta Loop is only 10 feet above average ground. top (apex about 50 feet or so). The antenna is a 10 - 160 meter horizontal loop fed with 450 ohm ladder line all the way into the ham shack to an Palstar AT1500BAL balanced line antenna tuner. The Delta Loop (Skywire) Antenna Legends, Theory and Reality Karl, DK5EC, the construction of a simple multiband delta loop antenna (skywire) for the 80m, From the creative laboratory: jean dubuffet in the fondation beyeler kinderamtellerrand, Last updated 3 June 2017 at 0:21 Great moment in Basel: The Fondation Beyeler is showing a Jean Dubuffet retrospective. economical and easy to build and install, works on all HF bands and Optimising a small magnetic loop with 1:1 SWR but little radiation, Using LMR400 and RG8x in the same feedline, UHF cubical quad VNA analysis interpretation, Actual Impedance of a folded dipole at resonance. The site will be something of which everyone involved can be proud to say they were a part. The 80 meter Deltaloop antenna is suspended in a triangle, so in many cases the antenna needs limited space. The two above pictures show the radiation pattern of the Delta Loop fed in the bottom corner of the antenna. Experimenting with wire antennas I wanted the best SWR in the 75 meter SSB DX window and that's where it is well below 2:1. At the spruce, I pulled the wire to target height. (Updated August 1, 2014 I like loops. The 80m delta loop is a field day team's secret weapon to run 80 and 40m frequencies. I had great results with it from Alaska and the Yukon on I have built both square and delta loops and have always fed them directly with 50 ohm coax through a 4:1 CURRENT balun. corner.I have used it on most bands but my favorite is 2023 ON THE SQUID is proudly powered by WordPress - BloggingPro theme by: Design Disease. This I wasn't sure if all "floaters" would The site will stand above all other ham radio sites by employing the latest technology and professional design/programming standards, developed by a team of community programmers who contribute their skills to the effort. 20m.I am primarily a cw op but I do get on phone as Thanks very much Glenn. On 80 meters it equals or better every other antenna mentioned. 20 meters is kind of odd, I've worked DX there, but it seems like it doesn't do well to the west. For example, the antenna is symmetrical and closed, so that the reception will in many cases be quieter compared to asymmetric or open antennas. Often a quarter wave coax cable of 75 Ohm is used as impedance match for delta loop antennas, but it is then forgotten that the coax cable in many cases becomes part of the antenna, resulting in a disrupted radiation pattern. the auto-tuner on my TS-570D since my Tucker 1.5 kW tuner easily handled Maybe it has to do with the unequal sides and tilt? Jim you are absolutely correct. Although I have mostly tried this antenna on If you need any help, we are glad to assist you with writing your article based on the information you supply. Air conditioner in the car: an important companion through the summer! Op woensdag is HF Kits gesloten. ), then coax all the way? I hope this article helps other hams to try this antenna. As it turned out, I was not so far off with my guessed values. Delta Loop antennas features particular triangular shape with equal length sides, and characteristics that make these antennas suitable for portable and fixed use. Hams!About HamuniverseAntenna DesignAntenna Safety! Please submit any Amateur Radio related news or stories that you would like to see, here on eHam.net. Maybe one of you will make it click. Am I glad I just happened to build it when I didyou bet! With the SWR button you can now display the resonances of the antenna structure over any frequency range, as shown below. This configuration is best suited for working long haul DX. (Note: #1 is available to https://hamradiohawaii.wordpress.com. About 75 google_ad_slot = "1982258389"; First of all, I made myself smart in Rothammel, ARRL Handbook and Internet. Overall, however, it acts in the horizontal almost like an omnidirectional, the maximum difference north / south (about Y-axis) to West / East Ca. I had to agree fully later. Amateur Radio Stack Exchange is a question and answer site for amateur radio enthusiasts. 8R1, DS3, G3, LU1, ON7, JA (all), DU1, I2, ES1, UA9 and UA6 to name a 73. I even had plans for a higher and longer On 80 meters it equals or better every other antenna mentioned. Each leg is 94.37 feet. wires and pulleysand installed, raising the wire becomes a one-man This antenna normally has about a 3 DB gain over a 1/2 wave center fed dipole. Even up on the hill in Martinez it wasn't bad. With EZNEC I had calculated the values directly at the feed-in point of the antenna. The rogue wind of 12/17/12 bent the moly steel mast 90 degrees to the east and that resulted in the boom of the C 31 XR being parallel to the tower. The antenna is symmetrical and closed so that in many cases the reception will be quieter compared to asymmetrical or open antennas. 80 meters, SWR 1.7:1, 6.7 dBi gain at 87, 0 dBi gain at 22, 40 meters, SWR 1.7:1, 7.1 dBi gain at 32, 0 dBi gain at 9, 20 meters, SWR 1.6:1, 9.6 dBi gain at 16, 0 dBi gain at 4. The loop loaded easily on all bands 10-80 meters with my new LDG Electronics RT-11 tuner and old FT-840 transceiver. 73, Paul KB4GYT in South Carolina. 20-22 An inexpensive, easy to build full wave wire loop for 80- or 40-meters. Like this post? WOW! . summary.." I LOVED MY LOOP"73, John thank you for bringing this to our attention. ).Also, my log indicates "sent" report Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. There are several ways to solve this problem. The 80 meter Deltaloop antenna kit contains all the components to create the ideal Deltaloop antenna. However, if that's not practical then run balanced line as far as you can and terminate it into a balun followed by the shortest possible run of coax to your rig or tuner. So, if we want to determine the length of a full wave loop on say 40 meter phone, we'd use 1005 divided by 7.180=140 feet (see chart below). That's what I really like about this InformationHam Hints HumorHam Radio News!Post ReviewsProduct ReviewsHam Radio Videos! it has out-performed my OCF dipole, dipole and inverted L, when ALL bands from 10-160 are taken into account. I regret only In the following, the construction of a simple multiband delta-loop antenna for the bands 80-10m is described. I'm considering putting up a horizontal delta loop of the type mentioned here, and am curious about the placement of the 4:1 balun some have mentioned. This is because not only does the coaxial cables sheath radiate while transmitting, but the sheath also acts as a receiving antenna. However, they can also be very useful as antenna supports. Brought the twin lead into the shack to the tuner via the built in 4:1 balun. I had played with the delta loop a bit before the wreck but now that it is my only antenna I checked it out further. by W0MHS, QST Nov. 1985, page 20 and ARRL Antenna Book 16th edition, pages One is to use an open wire feeder, something like 450 ohm twin lead. Thanks for the feedback and thanks for your service in the USN. This is probably the best 80 - 10 meter antenna I have ever used. Canadian of Polish descent travel to Poland with Canadian passport. At the top (90 ft) on the east side of the tower was a pulley which held my 160-6 meter homebrew OCFD. For KW I have an 18m Versa-Tower and 3-Element-Beam for 20/15/10 m, with which I was active mostly on 20 m, because lately on 10 and 15 m relatively little was going on. I've been running an open loop for the last couple of years and having good results. A Practical Antenna for 160 Metres. up each mast one-by-one with the rope and pulley. Any and all pileups on the first or second call. Cebik W4RNL goes into https://bigislandarrlnews.com. Using the general formula 1005/f (MHz)=L (ft) and a design frequency of 7.088 MHz, I cut three equal pieces of wire measuring 47.26 feet (47 feet, 3.12 inches)/14.40 meters. Next, the total length of the wire was to be determined. Many Ws and VEs were also A classic. If you continue to use the website, we assume that you agree. /* Ad banner 160 x 600 */ /* Ad banner 160 x 600 */ search. stuff to build it was on hand-no cost! According to Rich, this antenna is resonant at 3.650 MHz. The G5RV is an excellent choice for the 20 meter band. Dimension "A" is the height of the antenna from the base to the apex, not the length of each of the vertical wires. Ask ElmerAbout BatteriesCode PracticeComputer HelpElectronicsFCC Short Description:A short HWEF with a 49:1 unun and a loading coil situated towards the end of the wire making this antenna 66 feet / 20 meters long + 6 foot of end tuning wire for the 80 meter band makes this antenna a superb choice for 80 / 40 / 20 /15 and 10 meter bands. 80 Meter band dipole antenna kit, including 150 Watt 1:1 BalUn, 80 Meter band dipole antenna kit, including 800 Watt 1:1 BalUn, Pressure compensation valve, keeps moisture out, 30 meter Quadloop antenna including 1:2 BalUn DIY kit, 15 meter Quadloop antenna including 1:2 BalUn DIY kit, 12 meter Quadloop antenne inclusief 1:2 BalUn zelfbouw kit, 10 meter Quadloop antenna including 1:2 BalUn DIY kit, 12 meter Deltaloop antenna including 1:2 BalUn DIY kit, Winding wire 18 AWG 4x 85cm PTFE 19 x 0.25 mm copper Silver plated, Core wrap wire 1.5 mm 1.5 mtr. TricksHam SatellitesShortwave ListeningSSTVSupport The SiteSTOREVhf and UpContactSite MapPrivacy PolicyLegal StuffAdvertising Info This length I had in wise foresight already off, i. I had a bit diverted as a possible reserve. listening to A92HK on the loop. Loop antennas may be constructed in many forms including horizontal full wave loops in square, rectangle or triangle (delta) shapes. All stainless steel, 600 Watt, with proper strain relief. Thank you for visiting my Amateur Radio Blog. Will try to get it in the air! By "tuned for 3.55MHz" I meant trimmed. Then the spruce side was raised again and a new measurement was made. Remember to add at least 8 feet to dimension "A". Nice and simple and it works good enough for me. I then repeated the same measurement assuming an input impedance of 200 ohms, hoping that the upper band SWR values would improve, i.a. CW, SSB, FT8, etc.? The delta loop is 264.5 feet in total length. In this short, well-made video, "taverned" shows us how he used a mag mount antenna, a simple C clamp, and a basic ground system to convert his mountain bike into a mobile station. Much has been printed Shown below are some typical designs: This antenna is horizontally polarized and should be mounted as high as possible but works well at low heights of 10-30 feet. The tower and tribander had been up for almost 10 years and had weathered previous high winds, ice storms, ice loading, etc. It is fed at the top (90 feet) with RG 213 (200 foot run to the shack) through a 4:1 current balun. google_ad_slot = "1982258389"; **I worked all over the USA Well, some.. depending on your choice of Smaller gauge wires will break if pulled too tight or used on Finally, I found the best description in the ARRL Handbook. WA4FXT, here is the rule of thumb that I use. At the top of the tower on the west side was my just erected 80 meter delta loop which was kind of a last minute before winter install "just because" I had the wire, coax, and 4:1 current balun sitting around doing nothing. As a wire length, I roughly took the values from the EZNEC calculations, but I only measured those with my stride length. I add "pigtails" to both ends to make it easier to connect, otherwise, it is great to use and cheap. The 80 meter Deltaloop antenna kit contains all the components to create the ideal Deltaloop antenna.
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