My preferences have now changed, so I had to do something for the two bands. google_ad_slot = "1982258389"; End Fed 80 - 10 meters HF Multi Band Antenna 200 watts 49:1 unun with Due to the possible suspension points, a triangle of about 20x30x30m would be suitable, fed by a coaxial cable in one corner of the triangle, i. at the suspension point Versa Tower. Due to the high resolution, even the theoretical resonance value or SWR of 1: 1 with 50.4 ohms is now reached. The Delta loop antenna is not used as often compared to other antennas, yet these antennas have many advantages. Now with a handy mounting plate to attach both ring cores, so gluing is no longer necessary. 160 meter Antennas : 160 meters band antenna - The DXZone.com InformationHam Hints HumorHam Radio News!Post ReviewsProduct ReviewsHam Radio Videos! Delta-loop antenna 80m - Christina Cherry TricksHam SatellitesShortwave ListeningSSTVSupport The SiteSTOREVhf and UpContactSite MapPrivacy PolicyLegal StuffAdvertising Info Loop Antenna Notes.updated Dec. 2012 . A classic. At the top (90 ft) on the east side of the tower was a pulley which held my 160-6 meter homebrew OCFD. I lived down Morello Ave a few blocks from (just past Viano) you years ago and never had any ugly wind problems there! On 160 meters you should see about 110 kHz bandwidth. To my delight, however, the SWR improved to an acceptable 1: 1.7 at 40m. Maybe it has to do with the unequal sides and tilt? Any port in a storm, but I would worry about the take-off-angle of an 80m vertical loop used on 10m. I use "about" because exact numbers are not that The former, barely used long wire was used for the loop, for the other half I took another type of insulated copper strand. Anyone do the same Delta but horizontal? in QST over the years on loop antennas. remain stored in my garage as I work on a new loop design around 1200 feet is above the horizontal base wire of the antenna. That has left me with the last minute idea 80 meter delta loop as my only antenna. I use "about" because exact numbers are not that critical according to my results. 20m.I am primarily a cw op but I do get on phone as The transceiver is an Icom 7300 which tunes SWR 3:1 or less. Use a 4:1 balun for all delta loops, and for the larger 80 and 160m loops, no balun is required). But not 102 MPH, for sure!!! Loop antennas may be constructed in many forms including horizontal full wave loops in square, rectangle or triangle (delta) shapes. Definitely! HF Loop Antennas - American Radio Relay League 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. 7 Cool Delta Loop Antenna Projects for 40 meters - The DXZone InformationHam Hints HumorHam Radio News!Post ReviewsProduct ReviewsHam Radio Videos! This is a little long for 80, 17 and 12 meters, but a little short for 40 and 30 meters and just right for 20, 15 and 10 meters. Conditions have been average lately so it has to get better as the propagation improves. The antenna is completely symmetrical, in short there is no earth or counter capacity required. The second toroid is responsible for the impedance matching from 50 Ohm to 100 Ohm. 73, Paul KB4GYT in South Carolina. This Once the wire was in the Thanks. Many Ws and VEs were also In the higher bands, the directional characteristic and Verzifpelung correspondingly more pronounced. long spans - just ask me!My loop is fed about mid-span and the coax 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 also exhibit gain on harmonic bands. 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. For this I downloaded the antenna calculation program EZNEC from the internet. 80 METER ALL BAND LOOP - "I LOVE MY LOOP" BY KL7JR - hamuniverse.com Delta-loop antenna 80m Legends, theory and practice In the following, the construction of a simple multiband delta-loop antenna for the bands 80-10m is described. Don't let deed-restricted properties (HOA/CC&R) stop you from enjoying Amateur Radio. 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. As expected, the antenna radiates flatter with increasing frequency. Remember to add at least 8 feet to dimension "A". In my old edition of the Rothammel there is not much in it, it is limited to loops with a vertical arrangement, such. The antenna is symmetrical and closed so that in many cases the reception will be quieter compared to asymmetrical or open antennas. Never will Go back to a dipole or G5RV again. G5RV Multi Band HF Dipole Antenna. As a comparison, I have shown the results of the Deltaloop with chicken ladder below, with very interesting results and conclusions. "Loop Antennas", ARRL Antenna Book, 16th edition, pages Rich Rodgers (WB5YBZ) does a wonderful job of describing this antenna he built for his home station. scratching my head!). I did learn however, both 300 This project involves a management team of volunteers who each take a topic of interest and manage it with passion. galvanized water pipe. An 80 Meter Horizontally Polarized Full Wave Loop Antenna Where I live, there are many trees that often get in the way of antennas and antenna towers. 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. As feared, unfortunately, the previously perfect resonance point moved a bit, to 3.7 MHz, see Dieagrams below. The telegraph wire is #6 AWG google_ad_width = 160; It only takes a minute to sign up. 7 Delta Loops for 7 MHz. all" (you can't work them all! I wasn't sure if all "floaters" would Hi Jerry, I had a similar antenna up for a while. 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. By using a good BalUn, Common mode current are prevented, which also reduces interference from your direct environment. know that I built the KL7JR Sloping Vertical Delta Loop and I am having a Tune Around!SEARCHCQ-Calling All Amateur Radio Bicycle Mobile Setup. As a new ham (licensed in 11/13), I've been on a steep learning curve. Please check for current shipping costs the shopping basket or on the checkout page. The delta loop should be at least 1$\lambda$ in circumference for the lowest band. If the null hypothesis is never really true, is there a point to using a statistical test without a priori power analysis? space! KL7JR, 1. The result is to be admired in picture below. ), and about 20 percentof the total QSO's were 5x5 to Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? I had to realize that after 19.00h also on 20m quite quiet prevailed. A strong step with my short legs = 1 m. Anyhow, I expected to be completely wrong in the first attempt, because I could certainly only enter the Earth conditions in the EZNEC program very inaccurately. Branches are one of the main problems to be dealt with. Heinz I and II left the antenna analyzer to me and I was able to keep it quiet. It is made from 12-gauge insulated wire. Which was the first Sci-Fi story to predict obnoxious "robo calls"? About 75 I only had to add 1m to Y, and I was at the desired resonant frequency according to the SWR diagram. Top Loaded Vertical Antenna with Ground Tuning Unit, DIY coaxial vertical antenna for 4 metres, Ten must have items for portable Amateur Radio. ), then I decided to take the plunge and put up Due to the metal Versa-Towers house wall-carrying a chicken ladder would be difficult to realize, and a thick Matchbox I have not. "HO-HO-HOHPLs" by W4RNL The following are the measured SWR and impedance curves for all HF bands 40m 10m. Even the resonance point was exactly at 3.6 MHz, so I randomly sized the antenna wire randomly from the start. A Hawaii-based Amateur Radio Antenna Blog focusing on the theory, design, and use of homemade antennas. enamelled copper wire, 2x stainless Steel (A4) M6 eye (Strain relief), 2x heat shrink tube for antenna connection. 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. That is assuming the Band Gods did not wake up on the wrong side. Hey Jerry - I'll bet you didn't see any winds like that back in Martinez, eh? well.I built the antenna out of solid 14 gauge copper wire 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). 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. happy to say this simple antenna far exceeded my expectations!What I great time with it.When I first built it, I fed it from the I don't operate 30 meters so I don't care about that. For the sake of completeness, the plots for bands 40, 30, 20 and 10m follow, which already show a clear directional characteristic. corner.I have used it on most bands but my favorite is Thanks very much Glenn. Jim / W6JHB. nets I was 20 over S9 to otherWA and OR stations who were 100-200 the auto-tuner on my TS-570D since my Tucker 1.5 kW tuner easily handled 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. On the other bands it works well enough to suit me. and is installed between 30 to 40 feet in the air.Scaled-down If tuned for 3.55MHz, I anticipate having a good SWR on 80m, 40m, and 20m. It always handles full legal limit power with no problems. About Us | Contact | Website Terms & Conditions|Privacy Policy Other forms would be conceivable, then just with appropriate compromises. wires and pulleysand installed, raising the wire becomes a one-man How to choose antenna "pigtail" pragmatically? The project is straight forward, simple, and gives you emergency communications while you peddle down the road. 5-14. 5-16.2. air and about a foot or two away from the masts, I merely tied off the Good luck with your antenna experimenting! 1: 1 balun, wire strand, insulators for the bracing and rope clamps I had too. Thanks for the feedback and thanks for your service in the USN. For the latest Amateur/Ham Radio news and information, please visit these web sites: http://www.HawaiiARRL.info. 5x1 quality "both ways".For those doing the math, call the remaining 5 1). Which is better in my situation: Balanced dipole, or as much wire as possible in the air? How to force Unity Editor/TestRunner to run at full speed when in background? What differentiates living as mere roommates from living in a marriage-like relationship? Originally, I had inserted the Y-axis with 30m in the Wires table described above, so without first calculating the actual theoretical resonance length. With the antenna calculation program EZNEC, the setup is theoretically prepared and documented with the inexpensive antenna analyzer miniVNA or graphically documented. Length of a full-wave The 80m delta loop is a field day team's secret weapon to run 80 and 40m frequencies. 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. 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. On 80 meters it equals or better every other antenna mentioned. the loop, with a couple bands requiring a lot of patience! cwJM7 20m cwA92 20m SSB5T0 I'm a substitute teacher at the Laupahoehoe Community Public Charter School, 80 Meter Full Wave Loop Ham Radio Antenna. http://www.arrl.org. Copy the n-largest files from a certain directory to the current one, A boy can regenerate, so demons eat him for years. I've seen strong recommendations for using 300 ohm twinlead and a balun near the ground, but others still say the longer coax run isn't a problem. At 7 MHz I have theoretical 128 ohms and SWR of 1: 2.8. On 80 meters it equals or better every other antenna mentioned. Any and all For example why not feed with 450ohm line, then a 9:1 balun into coax? 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. So, my "longer" loop is (Ref. This configuration is best suited for working long haul DX. using the antenna 4 years. 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. How high off the ground? This antenna is resonant at 3.650 MHz-~-~~-~~~-~~-~-Please watch: "Minelab Manticore fir. 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 Generating points along line with specifying the origin of point generation in QGIS, xcolor: How to get the complementary color. Delta Loop Antenna Plans : Plans and projects on home made delta loops AND IT IS WORKING DX JUST FINE. longer to start with to better fit my backyard. Some people use open wire line and feed a 80 or 40 meter loop on multiple frequencies. room for a full-wave or longer antenna.According to antenna experts, a Next, the total length of the wire was to be determined. I can use it on 160 with a tuner though I run low power when doing so. https://hamradiohawaii.wordpress.com. 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. Nice and simple and it works good enough for me. Build a space efficient trapped dipole antenna for 40-80-160 meter bands using RG-58 and PVC pipe by W8NX. The same resonance points are displayed in both diagrams! As it turned out, I was not so far off with my guessed values. Joseph. KL7JR Sloping Vertical Delta Loop 80-6 Meters "KL7JR Sloping Vertical Delta Loop 80-6 Meters" Imagine 9 bands on one wire antenna! On the internet I got some tips, partly with contradictory legends, which made me curious. 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. lived on 10 acres in the country, I decided to make my horizontal loop Manual 1:2 BalUn 600 Watts for Delta-loop & Quad-loop antennas It would load on 160 but did not xmit really work well but did receive very well on that band, very low noise receive antenna. rope to whatever was handy (i.e.- nearby barn roof, tree etc.). Due to aesthetic considerations I need to use coax to the shack. . terminating the antenna wires to a 1/4 " eye bolt as used on some A 4:1 balun should do a reasonable job of transforming the impedances to the earlier listed 50 ohm SWR values. The top section of tower above the top guy point is bent slightly. BuildersRFI Tips and Ham Radio-A 40 meter folded dipole antenna using w 2 meter VHF Halo Antenna Assembly and Testing. (www.cebik.com) Do a The goals of the project were to provide an optimized antenna for 40m, 80m, 20m, and all other HF ham bands, in that order of priority. After we had the Delta loop of our OV home G25 back in the gears (see action Nobel laureates ) and I was very pleased with the send / receive properties, I wanted to build this type of antenna at home. I'm a FCC-licensed Amateur/Ham Radio Operator holding the Extra Class License (KH6JRM). I add "pigtails" to both ends to make it easier to connect, otherwise, it is great to use and cheap. 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. The diagram nicely shows the resonances at 3.6 MHz and their multiples. download from ARRL website, do "search" for "constructing loop The feed point insulator has a SO-239 connector. This is probably the best 80 - 10 meter antenna I have ever used. //-->. Smaller gauge wires will break if pulled too tight or used on Clarification: Thiis was a better all band antenna than the 160 L or the 240 ft dipole. 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. 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. Hey Jerry - I'll bet you didn't see any winds like that back in Martinez, eh? 80 Meter Full Wave Loop Ham Radio Antenna End2 of sub-wire 1 is identical to End1 of sub-wire 2, etc. This has all sorts of nasty effects, think of: interference, EMI, RFI disrupted radiation pattern of the antenna, restless noise level. This BalUn has a fantastic common mode current attenuation of over 30 dB. My question, essentially, is whether the feedline and balun choice can be optimized for not just one, but two bands 80m and 40m. stuff to build it was on hand-no cost! A Practical Antenna for 160 Metres. 80M Grounded Half Loop - qsl.net 80 meter Deltaloop antenna including 1:2 BalUn DIY kit - HF kits Learn more about Stack Overflow the company, and our products. This 1:2 BalUn scores very well both in terms of common mode current attenuation and impedance matching. What is the height? But since my main interest is in 80 / 40m operation, I have then made me to connect the cable at the feed point without impedance matching. 80 Meter Full Wave Loop Ham Radio Antenna or Amateur Radio Antenna. A 4:1 balun should do a reasonable job of transforming the impedances to the earlier listed 50 ohm SWR values. From my Balun to my tuner with a short piece of low loss 50 ohm coax. They are quieter than a dipole or a vertical, have a broader bandwidth and will usually out perform a dipole antenna.To determine the approximate circumference in feet of a full wave loop antenna use the formula: The feed point impedance of a full wave loop antenna is theoretically in the vicinity of 120 ohms and requires a 2:1 impedance transformer (for single band loops or a 4:1 balun to match on multiple bands) with 50 ohm line. is a favorite pastime for me. Now with a handy mounting plate for the toroidal cores, so gluing is no longer necessary. 20-21 7,95 Germany motor home!Given halfway decent propagation, this antenna should Cebik W4RNL goes into The following analysis is for a horizontal, equilateral triangle loop with all three corners at 60 feet. For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. Out in the pasture was a square shaped full wavelength 80 meter horizontal loop supported by wooden masts at each corner. Anyone gauge the performance difference with this vertical Delta-loop using coax vs. ladder-line? 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. strength, durability and because I may use an amp) terminates on the Ham Radio-Comparing a folded dipole to a regular d Building a 9:1 UNUN with FT-140-43 Toroid, Kitchen Foil Hula Hoop Loop for 15 to 10 meters. Click here for a detailed building description. wire used. The gain is around 4 dBd on 40 mtrs, but it will seem much higher due to the very low angle, radiation pattern. As a compromise would then be a square arrangement in question, which was also described here. A Force 12 C-31XR for 10-20 meters sat at just under 100 feet atop a Rohn 45 guyed tower. If, however, you intend to use it as a multi-band antenna (an 80m loop works very well on the higher bands) then it's imperative that you use a balanced line feed to keep losses due to SWR at a minimum. Anyone do the same Delta but horizontal? I found a square The Z axis denotes the height of the suspension points, in my case this is both my Versa Tower as a starting point and feed. 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. 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). This length I had in wise foresight already off, i. I had a bit diverted as a possible reserve. google_ad_slot = "1982258389"; 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. X axis) is about 3 dB. Moving to any angle is easy with EZNEC. The direction of fire is broadside to the antenna. Since my wire was very heavy Delta Loop antennas features particular triangular shape with equal length sides, and characteristics that make these antennas suitable for portable and fixed use. It did however work as an awesome 160 receive antenna option. The delta loop was fed at the lower left hand corner with two-conductor #18 AWG speaker wire from Radio Shack. Now we're in Folsom and get all kinds of strange weather! Do to take off angle(w&s=higher) I believe is why I have a little trouble getting into the far east, but most of the rest of this rock is not a problem.