80 meter delta loop antenna

Jim / W6JHB. Say you don't have the room for a full wave antenna then . I've built many NVIS, OCF, and other long wires to 600 feet, but keep coming back to the loop. Here's a way to use Amatuer/Ham Radio while you work on shedding a few pounds in useful exercise. Trapped dipole for 40-80-160 meters. @enzo I see now that I misinterpreted your layout for the antenna. The project is straight forward, simple, and gives you emergency communications while you peddle down the road. KL7JR Sloping Vertical Delta Loop 80-6 Meters - hamuniverse.com KL7JR, 1. Don't let deed-restricted properties (HOA/CC&R) stop you from enjoying Amateur Radio. Good luck with your antenna experimenting! Why not equip your bicycle for 2 meter/70 cm mobile operation? HF & ShortwaveLicense StudyLinksMidi MusicReading RoomRepeater Basics "pull" and a small pulley with 3/8-inch diameter rope for hoisting up the Never will Go back to a dipole or G5RV again. 1: 1 balun, wire strand, insulators for the bracing and rope clamps I had too. i have a VERTICAL delta loop cut for 80 meters.Fed at the corner. or even a rectangular loop is easier on the pocketbook and muscles to put 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. If you attempt to use it on other bands, the SWR will be relatively high and there will be significant loss in the feedline. 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. I'm a FCC-licensed Amateur/Ham Radio Operator holding the Extra Class License (KH6JRM). So I split the thing into 5 parts, although of course it consists of a single wire. Many BalUn manufacturers only look at the impedance matching but forget to look at the common mode current attenuation. If you need any help, we are glad to assist you with writing your article based on the information you supply. Amateur Radio Stack Exchange is a question and answer site for amateur radio enthusiasts. 80 meter Deltaloop antenna including 1:2 BalUn DIY kit - HF kits 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. The Delta Loop is not only a great transmitting antenna but a low noise receiving antenna. 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. As indicated in the handbook, even with me the antenna cost a penny, because I could take everything of my crafting box. summary.." I LOVED MY LOOP"73, John the loop, with a couple bands requiring a lot of patience! Thanks. Theoretical considerations and preparations. 20-22 An inexpensive, easy to build full wave wire loop for 80- or 40-meters. "Loop Antennas", ARRL Antenna Book, 16th edition, pages 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. Any antenna tuned for 80 Meters should also work on 20 and 10 meters as well. antennas, not only is the old saying "the higher the better" true, but I am really impressed with the signal strength on 80M, and 40M is well above par. economical and easy to build and install, works on all HF bands and 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. The next step was a site survey through my garden. 160M Loop Antenna Project - Marbut a lot of detail on gain (see ref #4 below) in his article so I won't get Chameleon SKYLOOP | Horizontal Loop Antenna - OH8STN Ham Radio 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. If you have sufficient space and a few trees, then this 80 meter full wavelength loop antenna is for you. I guess we all have had a favorite antenna at one time or another.In I wish I had tried this antenna sooner in my ham hobby years. Very quiet receive antenna. It loads on 80-10 meters, but I haven't tried making any QSOs on 80 with it. Loop antennas may be constructed in many forms including horizontal full wave loops in square, rectangle or triangle (delta) shapes. Once I re-build the horizontal loop I do intend to do some comparisons. I also have a home grown horizontal Loop up. My question, essentially, is whether the feedline and balun choice can be optimized for not just one, but two bands 80m and 40m. rev2023.5.1.43405. A 4:1 balun should do a reasonable job of transforming the impedances to the earlier listed 50 ohm SWR values. remain stored in my garage as I work on a new loop design around 1200 feet 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. Loop Antenna Notes - KL7JR - hamuniverse.com I had great results with it from Alaska and the Yukon on I will redo the analysis and update the answer this weekend. BuildersRFI Tips and from the tower I used an electric service entrance insulator fastened by 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The 80 meter Deltaloop antenna kit contains all the components to create the ideal Deltaloop antenna. Remember to add at least 8 feet to dimension "A". eHam.net is a community web site for amateur (ham) radio operators around the world. 5-16.2. Height above ground range. Questions. Not the greatest, but it works. On time Heinz, DL9NDG, appeared to me with the antenna analyzer minVNA, which he had borrowed shortly before from the other Heinz, DD9KA. 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. My preferences have now changed, so I had to do something for the two bands. version in the future as mentioned in the article. If tuned for 3.55MHz, I anticipate having a good SWR on 80m, 40m, and 20m. The 80 Meter Loop Antenna | ON THE SQUID To my delight, however, the SWR improved to an acceptable 1: 1.7 at 40m. 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. /* Ad banner 160 x 600 */ up and would provide about the same results.To support my loop made It is extremely easy to build and only requires 136 easy it is to build and how well it performs. Even up on the hill in Martinez it wasn't bad. fence insulators.Once the support mastsare complete with guy Branches are one of the main problems to be dealt with. For this I downloaded the antenna calculation program EZNEC from the internet. 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. This was designed for 80 meters, not 160.

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