AND IT IS WORKING DX JUST FINE. In fact, the performance of this 80 meter horizontal loop antenna, well it's almost unbelievable. I should add to my previous comment that I feed my loop antenna with balanced feed ladder line required for the tuner mentioned here. Could you or anyone add some information on the choice of balun? Other forms would be conceivable, then just with appropriate compromises. Use a 4:1 balun for all delta loops, and for the larger 80 and 160m loops, no balun is required). http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon). meters were either 5x7 or 5x9 reports "both ways". The actual length of the individual wire segments and thus the total length I could in the o.a. google_ad_width = 160; Out in the pasture was a square shaped full wavelength 80 meter horizontal loop supported by wooden masts at each corner. In this video from AC2RJ, we see how some well-placed trees, a camera tripod, a telescoping fiberglass mast, and a "V" antenna can get you on the air without a lot of effort. Ask ElmerAbout BatteriesCode PracticeComputer HelpElectronicsFCC Spot on frequency cut for 80 meters with about 30 kcs either side. Each leg is 94.37 feet. In fact, the upper band values improve here, but the SWR gets worse at 80 meters. 40 Meters with a Phased Delta Loop QST May 1984, pp. Thanks very much Glenn. Copper/Kevlar Antenna Wire 1.2 mm2 copper, 40/80 Meter Band Fan Dipole antenna kit, including 150 Watt 1:1 BalUn, 12 Meter band dipole antenna kit, including 150 Watt 1:1 BalUn. The N3FJZ antenna system. Loop antennas may be constructed in many forms including horizontal full wave loops in square, rectangle or triangle (delta) shapes. feedline and how high you install your antenna. Nice and simple and it works good enough for me. About 75 I even had plans for a higher and longer worked on 15 and 17 meters.Both bands produced about the same results scratching my head!). Length of a full-wave 80-meter loop is about 270 feet long (1005 divided by frequency in MHz) or about 67 feet per side. For example why not feed with 450ohm line, then a 9:1 balun into coax? In my old edition of the Rothammel there is not much in it, it is limited to loops with a vertical arrangement, such. Delta-loop antenna 80m - Christina Cherry I use "about" because exact numbers are not that Antenna for Condo Backyard-Stealth. Per the Alpha Antenna website; "Portable HF Magnetic Loop MagLoop antenna with cove. . I only had percentof them being with stations outside North America *(about 10% all" (you can't work them all! I quickly found a suitable BNC adapter on PL, and off we went. As a new ham (licensed in 11/13), I've been on a steep learning curve. Top Loaded Vertical Antenna with Ground Tuning Unit, DIY coaxial vertical antenna for 4 metres, Ten must have items for portable Amateur Radio. Also, a wonderful DX antenna, as I have worked as far away as Australia, on 20 meters, and as close in as 50-300 miles at night during our 80 meter rag chew. Which was the first Sci-Fi story to predict obnoxious "robo calls"? https://bigislandarrlnews.com. Full Wave Horizontal Loop Antenna - Wireless Girl Click here for the order form: Order Form, Telephone: (610) 317-9779 Address: 1843 Renwick Street Bethlehem, PA 18017. it has out-performed my OCF dipole, dipole and inverted L, when ALL bands from 10-160 are taken into account. The following are the measured SWR and impedance curves for all HF bands 40m 10m. So I split the thing into 5 parts, although of course it consists of a single wire. Delta Loop Skywire Antenna 80m - 10m The Delta Loop (Skywire) Antenna Legends, Theory and Reality German Version Summary Karl, DK5EC, describes the construction of a simple multiband delta loop antenna (skywire) for the 80m - 10 m bands. The direction of fire is broadside to the antenna. Join Amazon Prime - Watch Over 40,000 Movies & TV Shows Anytime - Start Free Trial Now, HDMI To RCA Composite Enables Users To Stream With Old TVs, Live Police Scanner Feeds On Your Computer, The Guide to Setting Up Google Chromecast, These Bluetooth Headphones Live Up To The Hype, JBL Charge 3: The Ultimate Bluetooth Speaker, More Audiophiles Using The Transcontinental Studio Microphone. It loads on 80-10 meters, but I haven't tried making any QSOs on 80 with it. Trapped dipole for 40-80-160 meters. The Loop Skywire QST November 1985, pp. http://www.arrl.org. 10 and 20 meters, I was also pleased with a weekend of experimenting on 15 wire to the top of masts (Figure A below). Add an antenna "tuner", a sturdy rig, such as the Yaesu FT-817, a microphone/cw key, and a simple grounding system, and you have a fully functional, nearly invisible ham station in your backyard. thank you for bringing this to our attention. were 5x9 +20! According to Rich, this antenna is resonant at 3.650 MHz. Triangle versus square - Some people were asking if the triangle was a valid configuration for the horizontal loop. It worked just fine 80 10. The antenna is fed in the center of the any legs with a 4:1 balun with the 4x side connected to the base and the 1x side connected to 50 ohm coax to your IC-7300. the loop, with a couple bands requiring a lot of patience! Oh well, For this I downloaded the antenna calculation program EZNEC from the internet. To my delight, theory (EZNEC calculations) and practice (miniVNA measurements) were not far apart, comparing the above EZNEC diagram for 1 30 MHz with the image below. 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. google_ad_client = "ca-pub-9377297764300878"; Now we're in Folsom and get all kinds of strange weather! and is installed between 30 to 40 feet in the air.Scaled-down Would appreciate if you could run the model once more with it equilateral, perfectly horizontal at 60 ft, corner fed. 6 or more s units quieter on receive than the xmit L. I have been using an 80M horizontal loop on and off for the last 20 years. Many Ws and VEs were also loop seemed to work just fine equally in all directions (I'm still use, (October through December), 75 percentof my QSOs on 10 and 20 On 80 meters it equals or better every other antenna mentioned. The 80 Meter Loop Antenna | ON THE SQUID Your reward will be quiet HF antenna with a bit of gain over a dipole. A little wood, some wire and a handful of components can make a directional antenna for indoor use where outdoor antennas are not permitted. The same windstorm snapped all four wooden poles holding up the horizontal loop. Good luck with your antenna experimenting! Take care. 80 Meter Full Wave Loop Ham Radio Antenna or Amateur Radio Antenna. google_ad_slot = "1982258389"; See the manual for more details. By varying the location of the feeding point within the triangle changes the radiation angle of the antenna. I value your comments and suggestions. by W0MHS, QST Nov. 1985, page 20 and ARRL Antenna Book 16th edition, pages 80 Meter Delta Loop Saves The Day - eHam.net I add "pigtails" to both ends to make it easier to connect, otherwise, it is great to use and cheap. For example, the antenna is symmetrical and closed, so that the reception will in many cases be quieter compared to asymmetric or open antennas. Generating points along line with specifying the origin of point generation in QGIS, xcolor: How to get the complementary color. 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). The decreasing SWR values with increasing frequency measured with the miniVNA, which could not be seen in the EZNEC diagram, are certainly due to the cable losses of the 30m long RG58 / U. I am using a home brew tuner, however old Johnson/Viking match Boxes are made of this type.There is no electrical connection between the TX output and antenna, only magnetic coupling. I can use it on 160 with a tuner though I run low power when doing so. I wish I had tried this antenna sooner in my ham hobby years. 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. steel guy wire attached by a u-bolt in the opposite direction of the wires Remember to add at least 8 feet to dimension "A". up and would provide about the same results.To support my loop made Don't let deed-restricted properties (HOA/CC&R) stop you from enjoying Amateur Radio. I have read much about impedance, SWR, quarter wavelengths, and I simply do not have the background to make sense of it. loop!Gain, you ask? 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. Here is a sample of stuff worked with the K3 and 75w:PY2 15m cwOH3 40m cw4K9 20m cwRA4 20m cwZP6 20m cw9K2 20m cwE7 15m cwKH6 20m RTTYVK2 30m Here, the red curve is the SWR, the green curve is the impedance. antenna and feedline connections were made up on the ground then hoisted I had to agree fully later. The bandwidth at SWR. When the tribander went vertical it took out the OCFD pinning it between the yagi and the tower. I will redo the analysis and update the answer this weekend. My Versa Tower is firmly screwed to the garage wall, I can crank it down to the height of about 7-8 m. My Hausfirst has about the same height, so that the antenna wire in the cranked down condition was partly on the roof tiles. HF & ShortwaveLicense StudyLinksMidi MusicReading RoomRepeater Basics The antenna is a multiband antenna without traps, which can be fed with normal RG58 coax, and costs almost nothing. room for a full-wave or longer antenna.According to antenna experts, a I don't operate 30 meters so I don't care about that. loop on 10 meters and a rectangular loop on 20 meters, (50+ countries in 3 Repeater All these comments are about a vertical Delta-loop. Feed point is approx 18-20' AGL and the Loop is mostly a square box. Loop Antenna : Resonant Loop Antennas - The DXZone.com 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. Check I fed it with 300ohm TV twin lead at one of the bottom corners. wires and pulleysand installed, raising the wire becomes a one-man In terms of my property, the Y-axis is a parallel line to my eastern property boundary and the X-axis to the northern boundary. The delta loop was fed at the lower left hand corner with two-conductor #18 AWG speaker wire from Radio Shack. With the SWR button you can now display the resonances of the antenna structure over any frequency range, as shown below. this antenna. Please check for current shipping costs the shopping basket or on the checkout page. Except for the delta loop all of the antennas had been up in our brutal weather for years. 80M Full Wave Loop - Reihl Research Heinz I and II left the antenna analyzer to me and I was able to keep it quiet. The opposite end of the feed point is approximately 35' AGL. longer to start with to better fit my backyard. an antenna that has not been spoken about often enough. Hi Jerry, I had a similar antenna up for a while. Ubuntu won't accept my choice of password. Even up on the hill in Martinez it wasn't bad. 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. West Coast the states on the Pacific Coast of the United States, Relaxed holiday home vacation in monopoli, tui villas, Happy birthday coloring, mirrors, cute birthday sayings, Abscess at the po cause, symptoms, therapy, Couple counseling couple counseling marriage counseling 2x in frankfurt psychotherapy. This They can also be in the vertical plane and are most often in the same shapes with the delta being very popular as it has both vertical and horizontal polarization. The telegraph wire is #6 AWG 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. Thanks for your support! I then repeated the same measurement assuming an input impedance of 200 ohms, hoping that the upper band SWR values would improve, i.a. Anyone gauge the performance difference with this vertical Delta-loop using coax vs. ladder-line? On the other bands it works well enough to suit me. long bottom extension of the PVC T to remove strain on the hanging from the tower I used an electric service entrance insulator fastened by This antenna normally has about a 3 DB gain over a 1/2 wave center fed dipole. For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. Ladder line to 80 meter loop 2020 03 09 - YouTube article!) miles away. **I worked all over the USA Then I cranked the mast at nominal height about 16 m high, and performed a new measurement. 80 meter full wave square horizontal loop feed by 600 ohm ladder line from link coupled balanced tuner. If there are any problems please let me know. Why not equip your bicycle for 2 meter/70 cm mobile operation? Due to the high resolution, even the theoretical resonance value or SWR of 1: 1 with 50.4 ohms is now reached. While I could get it to load it naturally was only a half wave long on 160 and radiated as such. Cubical quads. It can't compete with a beam on 20m, but support it between light poles in a parking lot and only stations running amps will compete with your signal on 80 and 40m. Thats actually all you have to do to start the calculations and see the results. The antenna is tied at three locations and insulators are supplied and factory set at the proper location so all you have to do is tie some rope to them and hoist the antenna into place. The antenna is completely symmetrical, in short there is no earth or counter capacity required. 20m cw worked tonightI am currently At the top (90 ft) on the east side of the tower was a pulley which held my 160-6 meter homebrew OCFD. It seemed to do better than a 160 meter inverted-L and a 240 foot dipole fed with open wire up 40 feet. 1). It is fed at the top (90 feet) with RG 213 (200 foot run to the shack) through a 4:1 current balun. A full-size Delta Loop, fed in the bottom corner, is a good low angle radiator and is great for working DX. pileups on the first or second call. At 7 MHz I have theoretical 128 ohms and SWR of 1: 2.8. From my Balun to my tuner with a short piece of low loss 50 ohm coax. Loop antennas may be constructed in many forms including horizontal full wave loops in square, rectangle or triangle (delta) shapes. Since a few months ago in our OV G25 the antenna analyzer fever broke out, I wanted to not only simply set up the intended antenna, but also theoretically calculate with antenna programs, measure the antenna after the set up with the Anlaysator and thus compare theory and practice. BuildersRFI Tips and is a favorite pastime for me. 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. in QST over the years on loop antennas. Rich Rodgers (WB5YBZ) does a wonderful job of describing this antenna he built for his home station. What is the symbol (which looks similar to an equals sign) called? Definitely! 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. Just to add my two cents worth, I have seen very good matching and good performance with the loop antenna, when I used link couple type tuner, instead of regular "T" match type. //-->. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. 20-22 An inexpensive, easy to build full wave wire loop for 80- or 40-meters. Anyone do the same Delta but horizontal? He is peaking S8 and was louder the other Works great 80 - 10. 7 Cool Delta Loop Antenna Projects for 40 meters - The DXZone 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. Dimension "B" is the length of antenna wire called the base (width) of the antenna. KL7JR ALL BAND VERTICAL LOOP - THE EASY LOOP! Including 6 meters by 8,00 Belgium "cloud-burner".I am How to force Unity Editor/TestRunner to run at full speed when in background? Copy the n-largest files from a certain directory to the current one, A boy can regenerate, so demons eat him for years. https://hamradiohawaii.wordpress.com. The base of the Delta Loop is only 10 feet above average ground. Please submit any Amateur Radio related news or stories that you would like to see, here on eHam.net. I lived down Morello Ave a few blocks from (just past Viano) you years ago and never had any ugly wind problems there! duty, I could pull it tight. KL7JR, 1. A 4:1 balun should do a reasonable job of transforming the impedances to the earlier listed 50 ohm SWR values. - when I tire of this antenna that is!I highly recommend Read the coordinate image if I moved the mouse pointer over the respective segment. 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. So I let the antenna down from the spruce side (less fron work than the crankshaft at the Versa Tower) and lengthened the wire by 2.70. On the 80 Vertical Delta - how did 160m perform? Connect and share knowledge within a single location that is structured and easy to search. 73, Paul KB4GYT in South Carolina. Not the best antenna, but it works. air and about a foot or two away from the masts, I merely tied off the It is fed at the top (90 feet) with RG 213 (200 foot run to the shack) through a 4:1 current balun. Do you already have specific dimensions in mind? download from ARRL website, do "search" for "constructing loop I found a 60 meter resonance for this 160 loop (third harmonic) and it did not work as well as a low dipole cut for 60 meters. AND IT IS WORKING DX JUST FINE. Not the greatest, but it works. The tower and tribander had been up for almost 10 years and had weathered previous high winds, ice storms, ice loading, etc. I've built many NVIS, OCF, and other long wires to 600 feet, but keep coming back to the loop. Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC Bands 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. lived on 10 acres in the country, I decided to make my horizontal loop This allows us to adapt an unbalanced system (coax cable) to a balanced antenna system (delta loop or quad-loop antenna). watt manual tuners (MFJ and Vectronics) that I used took some time to tune from salvaged telegraph line wire from the Yukon Territory (just think KL7JR Sloping Vertical Delta Loop 80-6 Meters "KL7JR Sloping Vertical Delta Loop 80-6 Meters" Imagine 9 bands on one wire antenna! Here are the results, 160 meters It will load using my manual tuner80 Meters 2:1 3681-3933 Khz40 Meters 2:1 7127-730020 Meters Requires tuner17 Meters 2:1 entire band15 Meters 2:1 21000-21.24512 Meters 2:1 entire band10 Meters 2:1 28.000-28.430, I can achieve an SWR below 2:1 anywhere on any of the above bands using my manual tuner. All stainless steel, 600 Watt, with proper strain relief. As a comparison, I have shown the results of the Deltaloop with chicken ladder below, with very interesting results and conclusions. The next step was a site survey through my garden. Some people use open wire line and feed a 80 or 40 meter loop on multiple frequencies. my portable outings! Why the obscure but specific description of Jane Doe II in the original complaint for Westenbroek v. Kappa Kappa Gamma Fraternity? The also exhibit gain on harmonic bands.