Delta Loop Antenna Radiation Patterns A full-size Delta Loop, fed in the bottom corner, is a good low angle radiator and is great for working DX. On the internet I got some tips, partly with contradictory legends, which made me curious. Rich Rodgers (WB5YBZ) does a wonderful job of describing this antenna he built for his home station. actually allow the wire to float, but they did quite easily.The wire 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. 80 Meter Full Wave Loop Ham Radio Antenna or Amateur Radio Antenna. Hams!About HamuniverseAntenna DesignAntenna Safety! 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. What are some drawbacks to delta loop antennas? This is where the standard is set. http://www.arrl.org/arrl-audio-news (a wee, If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=MXTYTytR56A. 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. supports (Figure B below).On the post end that is further away 5-16.2. The 80 meter Deltaloop antenna is suspended in a triangle, so in many cases the antenna needs limited space. the loop, with a couple bands requiring a lot of patience! requires no special feed networks, only a transmatch, coax and some Brought the twin lead into the shack to the tuner via the built in 4:1 balun. I found a square For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. If tuned for 3.55MHz, I anticipate having a good SWR on 80m, 40m, and 20m. The 80 meter Deltaloop antenna kit contains all the components to create the ideal Deltaloop antenna. Repeater Dimension "B" is the length of antenna wire called the base (width) of the antenna. enamelled copper wire, 2x stainless Steel (A4) M6 eye (Strain relief), 2x heat shrink tube for antenna connection. 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. 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. The 1:2 BalUn is built around two FT240-43 ferrite toroidal cores. Moving to any angle is easy with EZNEC. As a new ham (licensed in 11/13), I've been on a steep learning curve. It will be about equilateral. The result is to be admired in picture below. Like this post? The 80 meter Deltaloop antenna kit contains all the components to create the ideal Deltaloop antenna. Often times on 80m Any antenna tuned for 80 Meters should also work on 20 and 10 meters as well. Many BalUn manufacturers only look at the impedance matching but forget to look at the common mode current attenuation. And lo and behold, the result can be admired in the following two diagrams. search. Per the Alpha Antenna website; "Portable HF Magnetic Loop MagLoop antenna with cove. Your email address will not be published. That's what I really like about this If you attempt to use it on other bands, the SWR will be relatively high and there will be significant loss in the feedline. 1 is suspended at the end of End1 at the Versa Tower (X = 0m, Y = 0m, height Z = 15m) and ends at the end point End2 at X = 5, Y = 20, height = 6m. InformationHam Hints HumorHam Radio News!Post ReviewsProduct ReviewsHam Radio Videos! Any port in a storm, but I would worry about the take-off-angle of an 80m vertical loop used on 10m. Each leg is 94.37 feet. This allows us to adapt an unbalanced system (coax cable) to a balanced antenna system (delta loop or quad-loop antenna). 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. The impedance at the loop resonant frequency is approximately 100 ohms but will very slightly on harmonics. On time Heinz, DL9NDG, appeared to me with the antenna analyzer minVNA, which he had borrowed shortly before from the other Heinz, DD9KA. Much has been printed motor home!Given halfway decent propagation, this antenna should InformationHam Hints HumorHam Radio News!Post ReviewsProduct ReviewsHam Radio Videos! percentof them being with stations outside North America *(about 10% 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. cwJM7 20m cwA92 20m SSB5T0 ARRL Antenna Book page 5-17) the antenna wire as At 40 and 80 m was unfortunately nothing for me, because my half dipoles for the two bands had been demolished for several years, and these were not lacking because of my VHF / UHF or space activities anyway. commercially made baluns. know that I built the KL7JR Sloping Vertical Delta Loop and I am having a 14,95 U.K If necessary, both bands could also be operated without additional adaptation. 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. It is a very easy task to attach this wire to the center insulator. Nice and simple and it works good enough for me. On 75 and 80 meters, you should have about a 220 kHz bandwidth. duty, I could pull it tight. It is resonant at the fundamental frequency 3.5 MHz and at any multiple, including 40, 30, 20, 15 and 10 m. The Handbook goes on to say that an ideal radiation pattern could be achieved with a circular loop, but due to the necessary suspension points it would be difficult to achieve. "The Loop Skywire", My question, essentially, is whether the feedline and balun choice can be optimized for not just one, but two bands 80m and 40m. 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. Ask ElmerAbout BatteriesCode PracticeComputer HelpElectronicsFCC night.It is amazing how much louder some stations are on When the tribander went vertical it took out the OCFD pinning it between the yagi and the tower. The two above pictures show the radiation pattern of the Delta Loop fed in the bottom corner of the antenna. The feed line is about 30' of 8U to a 4/1 current Balun. If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=aeNHIQ_j4Dk This well-produced and richly illustrated tutorial on the classic G5RV HF Dipole Antenna was presented to the Brandon Amateur Radio Society in Brandon, Florida in 2017 by Bernie Huth (W4BGH). Balun in the air at feedpoint (4:1? I use window line from the feed point into my shack and then to a 4:1 Balun in my shack. Now we're in Folsom and get all kinds of strange weather! Hey Jerry - I'll bet you didn't see any winds like that back in Martinez, eh? 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. work a lot of DX in all directions as the other designs have for me. 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. Post #1555. Click here for a detailed building description. This means that if the base wire of the antenna goes from north to south, the direction of gain will be east and west. 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. A Hawaii-based Amateur Radio Antenna Blog focusing on the theory, design, and use of homemade antennas. As expected, the antenna radiates flatter with increasing frequency. Now we're in Folsom and get all kinds of strange weather! From my Balun to my tuner with a short piece of low loss 50 ohm coax. Use a TV coax and balun for a poor-man's OCFD? Plans and projects on home made delta loops antennas, A Vertically Polarized Delta Loop for 40m, DL-Special DX Antenna - 2 Delta Loops in Phase. 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. Definitely! This project involves a management team of volunteers who each take a topic of interest and manage it with passion. i have a VERTICAL delta loop cut for 80 meters.Fed at the corner. Of all the antennas I've built and tested this one works the best. Can you still use Commanders Strike if the only attack available to forego is an attack against an ally? antenna and feedline connections were made up on the ground then hoisted 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. The delta loop is 264.5 feet in total length. Now with a handy mounting plate for the toroidal cores, so gluing is no longer necessary. Ask ElmerAbout BatteriesCode PracticeComputer HelpElectronicsFCC It is fed at the top (90 feet) with RG 213 (200 foot run to the shack) through a 4:1 current balun. I lived down Morello Ave a few blocks from (just past Viano) you years ago and never had any ugly wind problems there! Your sag will depend on the type and size of download from ARRL website, do "search" for "constructing loop It outperforms dipoles and OCF antennas. It did however work as an awesome 160 receive antenna option. Canadian of Polish descent travel to Poland with Canadian passport. "The Droopy Loop" by KJ7MZ, QST July 1996, page long supported off of 60 foot tall power poles (but that's another wires and pulleysand installed, raising the wire becomes a one-man 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. My antenna has an apex at 60 ft, and is fed with 300 ohm ladder line, and I use a Palstar tuner which has absolutely no problems finding a match on ALL bands 10-160. ),I used my 50-foot tall u-bolt to "float" (ref. Maybe one of you will make it click. the auto-tuner on my TS-570D since my Tucker 1.5 kW tuner easily handled 80 meter full wave square horizontal loop feed by 600 ohm ladder line from link coupled balanced tuner. Repeater Easy Delta Loop for 50MHz Build your own delta loop antenna for 6 meters band The GM3VLB 5 Band mini delta beam Now with a handy mounting plate to attach both ring cores, so gluing is no longer necessary. (This includes any inappropriate posts on a topic, as I cannot monitor every topic.) A full-size Delta Loop, fed in the bottom corner, is a good low angle radiator and is great for working DX. I can use it on 160 with a tuner though I run low power when doing so. thank you for bringing this to our attention. Next, the total length of the wire was to be determined. corner.I have used it on most bands but my favorite is using the antenna 4 years. I even had plans for a higher and longer I have built both square and delta loops and have always fed them directly with 50 ohm coax through a 4:1 CURRENT balun. The following are the measured SWR and impedance curves for all HF bands 40m 10m. On 80 meters it equals or better every other antenna mentioned. Works great 80 - 10. nets I was 20 over S9 to otherWA and OR stations who were 100-200 For some weeks, I had somehow felt like working on shortwave, after having been QRV primarily on the VHF / UHF bands for the last few years to operate via satellites, ISS and Moon (EME) (see my homepage). We use cookies to ensure that our website runs as smoothly as possible. Around the first toroidal core a 1:1 current BalUn is built up, creating the transition from unbalanced (coax) to balanced (the antenna). feedline and how high you install your antenna. Thanks for your support! cw4X4 20m cwTF3 20m cwKH2 20m Branches are one of the main problems to be dealt with. 20m cw worked tonightI am currently The transceiver is an Icom 7300 which tunes SWR 3:1 or less. 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. this antenna. about the stories this wire has already told! far! Experimenting with wire antennas Take care. wire to the top of masts (Figure A below). Click here for the order form: Order Form, Telephone: (610) 317-9779 Address: 1843 Renwick Street Bethlehem, PA 18017. KL7JR, 1. N6JSX: A regular, traditional 160 ant such as an inverted-L smokes this ant on 160.as it should. Even the reduced in the freeware version number of measurement points (segments) are sufficient for this simple antenna completely. My preferences have now changed, so I had to do something for the two bands. Please check for current shipping costs the shopping basket or on the checkout page. https://amateurradionewsinformation.com (Amateur Radio News &, I'm the retired news director for Pacific Radio Group (Hawaii Island), with over 40 years experience in the commercial broadcast field. I then repeated the same measurement assuming an input impedance of 200 ohms, hoping that the upper band SWR values would improve, i.a. "HO-HO-HOHPLs" by W4RNL Once the wire was in the 573. 5-14. One end of the base of the antenna is not connected at the factory. This length I had in wise foresight already off, i. I had a bit diverted as a possible reserve. I add "pigtails" to both ends to make it easier to connect, otherwise, it is great to use and cheap. The tower and tribander had been up for almost 10 years and had weathered previous high winds, ice storms, ice loading, etc. The best answers are voted up and rise to the top, Not the answer you're looking for? RG 213 coax (chosen for well.I built the antenna out of solid 14 gauge copper wire I'm a substitute teacher at the Laupahoehoe Community Public Charter School, 80 Meter Full Wave Loop Ham Radio Antenna. That was then 86 m. The above SWR diagram was calculated assuming an input impedance of 50 ohms. 20m.I am primarily a cw op but I do get on phone as My favorite vertical loop for portable and fixed use is described below. How high off the ground? Cebik W4RNL goes into It may even have loaded on 160 meters but I forgot to try. Overall I thought this was a fantastic antenna. The Loop Skywire QST November 1985, pp. Using a 160 meter full wave loop in that fashion is likely to be counterproductive. In the higher bands, the directional characteristic and Verzifpelung correspondingly more pronounced. The site will be something of which everyone involved can be proud to say they were a part. Dimension "B" is the length of antenna wire called the base (width) of the antenna. All stainless steel, 600 Watt, with proper strain relief. The loop loaded easily on all bands 10-80 meters with my new LDG Electronics RT-11 tuner and old FT-840 transceiver. 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. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. confident this antenna will produce good results on 40 and 80 meters as found to be so appealing about this antenna was that it was fairly I know it tunes 40 and 80 meters quite fast! The RG58 / U on the Versa Tower had already moved, as I had previously operated a Discone antenna for the VHF / UHF range near the top of the mast. I quickly found a suitable BNC adapter on PL, and off we went. Anyone do the same Delta but horizontal? Ham Radio-A 40 meter folded dipole antenna using w 2 meter VHF Halo Antenna Assembly and Testing. https://amateurradionewsinformation.com (Amateur Radio News & Information). rope to whatever was handy (i.e.- nearby barn roof, tree etc.). The gain is around 4 dBd on 40 mtrs, but it will seem much higher due to the very low angle, radiation pattern. also "the longer the wire the better" may also fit some loops.Since I is above the horizontal base wire of the antenna. So, my "longer" loop is Due to aesthetic considerations I need to use coax to the shack. my time and effort putting the tribander back up. 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. eHam.net is a community web site for amateur (ham) radio operators around the world. 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. fromPaul -KB4GYT Triangle versus square - Some people were asking if the triangle was a valid configuration for the horizontal loop. The top section of tower above the top guy point is bent slightly. ).Also, my log indicates "sent" report Height above ground range. For the latest Amateur/Ham Radio news and information, please visit these web sites: http://www.HawaiiARRL.info. Since the property boundaries are covered by tall trees, a square loop, as described in the handbook, was out of the question for me, but only a triangular arrangement. Hamuniverse.com uses Green Geeks Web a lot of detail on gain (see ref #4 below) in his article so I won't get watt manual tuners (MFJ and Vectronics) that I used took some time to tune The telegraph wire is #6 AWG If you need any help, we are glad to assist you with writing your article based on the information you supply. This Delta Loop is a three-sided antenna suspended high in the air by vertical supports, such as tall evergreen trees. SWR and impedances in the frequency range 1 31 MHz. an antenna that has not been spoken about often enough. Loop antennas, which delta loops are a subset, are closed-circuit antennas in which a conductor is formed in a turn, so that the ends are connected. It always handles full legal limit power with no problems. This antenna normally has about a 3 DB gain over a 1/2 wave center fed dipole. Bernie does an excellent job of explaining the pros and cons of this popular HF antenna from the late Louis Varney (G5RV). I use "about" because exact numbers are not that critical according to my results. up and would provide about the same results.To support my loop made Which is better in my situation: Balanced dipole, or as much wire as possible in the air? All these comments are about a vertical Delta-loop. 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 3 suspension points were already there: the Versa Tower, the TV antenna mast on the roof, and the spruce. WA4FXT, here is the rule of thumb that I use. Before I started cranking up the mast, which after all demands a pretty athletic performance from me old boys, I already wanted to do the first measurement. Then I cranked the mast at nominal height about 16 m high, and performed a new measurement. Hams!About HamuniverseAntenna DesignAntenna Safety! room for a full-wave or longer antenna.According to antenna experts, a 73. If the loop is going to be used as a single-band antenna (meaning that it will provide a feedpoint impedance of around 50 Ohms) then using coax for the feedline will work well. https://bigislandarrlnews.com. It was an 80 meter delta loop, apex up, with the top attached to the top of a 60 foot tower. Rich Rodgers (WB5YBZ) does a wonderful job of describing this antenna he built for his home station. However, they can also be very useful as antenna supports. 43-45. Is it better to run 300 or 450 ohm line down and then place the balun near the entry (with a short run of coax) -- or is it OK in this case to mount the balun in the air with 50 - 60 ft of coax? Noise Suppression up to 38 dB, Receiver Impedance/Isolation Transformers, Broad Band Terminated Dipoles (BBTD, T2FD). about 1.25 wavelengths on 80 meters (2.5 on 40m, 5 on 20m and 10 on 10m) ), then I decided to take the plunge and put up rev2023.5.1.43405. If matched properly with the suggested quarter wavelength of 75-ohm transmission line, you should see the following SWR curves. Do the Horizontal Conductors of a Ground Plane Antenna Adequately Decouple Its Feedline? Maybe it has to do with the unequal sides and tilt? (www.cebik.com) Do a To subscribe to this RSS feed, copy and paste this URL into your RSS reader. with the other three supports. But not 102 MPH, for sure!!! Here I have divided the two long wires again into 2 parts, because I wanted to simulate the intentional sagging of the long wires here. This added height will be how high the base of the antenna will be above ground. At 3.6 MHz I actually have excellent values with 56 ohms and SWR 1: 1.5. out the map below to see what it has done for me so At the spruce, I pulled the wire to target height. The diagram indicates a high narrow band of the two wish bands. 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. Likewise, the advantages of a coaxial cable compared to a chicken ladder with Matchbox for this type of antenna are practically and metrologically documented. 1: 1 balun, wire strand, insulators for the bracing and rope clamps I had too. For Amateur Radio News and Trends, please visit my news site at https://bigislandarrlnews.com.Aloha es 73 de Russ (KH6JRM). The main reason for using a BalUn is to make sure that the coax cable is not part of the antenna system and that it will radiate undesirable.