all" (you can't work them all! economical and easy to build and install, works on all HF bands and I wish I had tried this antenna sooner in my ham hobby years. long supported off of 60 foot tall power poles (but that's another My favorite vertical loop for portable and fixed use is described below. "The Droopy Loop" by KJ7MZ, QST July 1996, page The 80 meter Deltaloop antenna kit contains all the components to create the ideal Deltaloop antenna. 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. multi band super mini loop antenna InformationHam Hints HumorHam Radio News!Post ReviewsProduct ReviewsHam Radio Videos! To subscribe to this RSS feed, copy and paste this URL into your RSS reader. percentof them being with stations outside North America *(about 10% I wish I had tried this antenna sooner in my ham hobby years. Build a space efficient trapped dipole antenna for 40-80-160 meter bands using RG-58 and PVC pipe by W8NX. I got the idea from the W1FB Antenna Notebook. I am really impressed with the signal strength on 80M, and 40M is well above par. This configuration is best suited for working long haul DX. The antenna is symmetrical and closed so that in many cases the reception will be quieter compared to asymmetrical or open antennas. ), and about 20 percentof the total QSO's were 5x5 to summary.." I LOVED MY LOOP"73, John This is done so you can uncoil the antenna. Hey Jerry - I'll bet you didn't see any winds like that back in Martinez, eh? It is fed at the top (90 feet) with RG 213 (200 foot run to the shack) through a 4:1 current balun. On 75 and 80 meters, you should have about a 220 kHz bandwidth. In the following, the construction of a simple multiband delta-loop antenna for the bands 80-10m is described. In the following picture the SWR can be seen again for the range 3-4 MHz in high resolution. Opinions please? If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=2zWb-KnkGdY. Out in the pasture was a square shaped full wavelength 80 meter horizontal loop supported by wooden masts at each corner. Due to the high resolution, even the theoretical resonance value or SWR of 1: 1 with 50.4 ohms is now reached. 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. Noise Suppression up to 38 dB, Receiver Impedance/Isolation Transformers, Broad Band Terminated Dipoles (BBTD, T2FD). Much has been printed 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. 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. Dimension "B" is the length of antenna wire called the base (width) of the antenna. 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. The impedance at the loop resonant frequency is approximately 100 ohms but will very slightly on harmonics. 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. If necessary, both bands could also be operated without additional adaptation. To build this antenna you need a lot that is at least 100 feet across. Ideally you would want to run the balanced line all the way to your antenna tuner. eHam.net provides recognition and enjoyment to the people who use, contribute, and build the site. Bring down a length of 450 ohm line, then a balun, then coax? KL7JR Sloping Vertical Delta Loop 80-6 Meters - hamuniverse.com Experimenting with wire antennas i have a VERTICAL delta loop cut for 80 meters.Fed at the corner. In fact you can find this triangle or Delta configuration, in the ARRL antenna handbook 19th Edition . @enzo I see now that I misinterpreted your layout for the antenna. 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. It would have to be over the thumb so somewhere between 80 and 90 meters. The 80m delta loop is a field day team's secret weapon to run 80 and 40m frequencies. HF & ShortwaveLicense StudyLinksMidi MusicReading RoomRepeater Basics My question, essentially, is whether the feedline and balun choice can be optimized for not just one, but two bands 80m and 40m. I have a 80 Meter Delta Loop up 50 feet fed with RG-213 and a 4:1 balun. It will be about equilateral. 73, Paul KB4GYT in South Carolina. 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. The delta loop is 264.5 feet in total length. 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. How to choose antenna "pigtail" pragmatically? All these comments are about a vertical Delta-loop. is a favorite pastime for me. WOW! Hy Power Antenna Company - Delta Loop 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. 5-14. I'm a substitute teacher at the Laupahoehoe Community Public Charter School, 80 Meter Full Wave Loop Ham Radio Antenna. https://bigislandarrlnews.com. This is probably the best 80 - 10 meter antenna I have ever used. Do the Horizontal Conductors of a Ground Plane Antenna Adequately Decouple Its Feedline? It was an 80 meter delta loop, apex up, with the top attached to the top of a 60 foot tower. If tuned for 3.55MHz, I anticipate having a good SWR on 80m, 40m, and 20m. tower and three masts, each 35 to 40 feet long, made from 2 inch 1). 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. This project involves a management team of volunteers who each take a topic of interest and manage it with passion. If the null hypothesis is never really true, is there a point to using a statistical test without a priori power analysis? Some people use open wire line and feed a 80 or 40 meter loop on multiple frequencies. Should I re-do this cinched PEX connection? And all since July 12th, 2014Thanks for the idea - my first loop since I got my license in That's very interesting that it continues to be a "cloud warmer" at 40m and 20m, contrary to the conventional knowledge of delta loop behavior. galvanized water pipe. Why the obscure but specific description of Jane Doe II in the original complaint for Westenbroek v. Kappa Kappa Gamma Fraternity? Cubical quads. wire to the top of masts (Figure A below). nets I was 20 over S9 to otherWA and OR stations who were 100-200 G5RV Multi Band HF Dipole Antenna. This BalUn has a fantastic common mode current attenuation of over 30 dB. 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). While I could get it to load it naturally was only a half wave long on 160 and radiated as such. Loop antennas may be constructed in many forms including horizontal full wave loops in square, rectangle or triangle (delta) shapes. Thanks very much Glenn. Connect and share knowledge within a single location that is structured and easy to search. For the latest Amateur/Ham Radio news and information, please visit these web sites: http://www.HawaiiARRL.info. I regret only The project is straight forward, simple, and gives you emergency communications while you peddle down the road. steel guy wire attached by a u-bolt in the opposite direction of the wires weeks of casual operating! Op woensdag is HF Kits gesloten. On time Heinz, DL9NDG, appeared to me with the antenna analyzer minVNA, which he had borrowed shortly before from the other Heinz, DD9KA. The part wire no. The Delta Loop is not only a great transmitting antenna but a low noise receiving antenna. Air conditioner in the car: an important companion through the summer! HF Loop Antennas - American Radio Relay League operation.On my tower I installed a six-foot long 4x4 painted wood 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. 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. long bottom extension of the PVC T to remove strain on the hanging Amateur Radio Stack Exchange is a question and answer site for amateur radio enthusiasts. (What length, what balun?). coax.Silicon caulk was then applied to the connections for However, they can also be very useful as antenna supports. Ubuntu won't accept my choice of password. found to be so appealing about this antenna was that it was fairly This is post 2454 in a continuing series of simple ham radio antennas. 4,95 The Netherlands (letterbox) Since my wire was very heavy easy it is to build and how well it performs. A little wood, some wire and a handful of components can make a directional antenna for indoor use where outdoor antennas are not permitted. Repeater google_ad_height = 600; Other combinations of ladder lines and baluns are possible but with no practical advantage. End Fed 80 - 10 meters HF Multi Band Antenna 200 watts 49:1 unun with Delta-loop antenna 80m - Christina Cherry I use "about" because exact numbers are not that critical according to my results. Even the resonance point was exactly at 3.6 MHz, so I randomly sized the antenna wire randomly from the start. Feed point is approx 18-20' AGL and the Loop is mostly a square box. I don't operate 30 meters so I don't care about that. HF Loop Antennas - American Radio Relay League i have a horiz loop 280ft of wire fed with ladder line and up 70ft.does not tune up great on 160m but works great on 80m to 10m.signals equally as good on 17m as a 12element log at 90ft.great antenna and simple, i have a horiz loop 280ft of wire fed with ladder line and up 70ft.does not tune up great on 160m but works great on 80m to 10m.signals equally as good on 17m as a 12element log at 90ft.great antenna and sim ple. That's what I really like about this See the manual for more details. The loop is clearly the option for quiet antenna and a good option for multiband use but otherwise non spectacilar. The 600 Watt 1:2 BalUn is made up of two FT240-43 ferrite ring cores. 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. Loop Antennas - Loop Antennas - Palomar Engineers AND IT IS WORKING DX JUST FINE. this antenna. about 1.25 wavelengths on 80 meters (2.5 on 40m, 5 on 20m and 10 on 10m) 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. At 7 MHz I have theoretical 128 ohms and SWR of 1: 2.8. Give a dela loop a try, you won't be sorry! With EZNEC I had calculated the values directly at the feed-in point of the antenna. Each of the three sides is a shade over 88 feet long. 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. I can use it on 160 with a tuner though I run low power when doing so. 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. Full wave HF loop antennas are ideal NVIS (near vertical incident skywave) antennas for local, state, and regional communications. actually allow the wire to float, but they did quite easily.The wire 80M Grounded Half Loop - qsl.net The antenna is completely symmetrical, in short there is no earth or counter capacity required. also "the longer the wire the better" may also fit some loops.Since I few! One is to use an open wire feeder, something like 450 ohm twin lead. No balun or choke coils necessary.