80 meter delta loop antenna

On time Heinz, DL9NDG, appeared to me with the antenna analyzer minVNA, which he had borrowed shortly before from the other Heinz, DD9KA. with the other three supports. Opinions please? Joseph. antennas, not only is the old saying "the higher the better" true, but ), then coax all the way? The site will stand above all other ham radio sites by employing the latest technology and professional design/programming standards, developed by a team of community programmers who contribute their skills to the effort. 4,95 The Netherlands (letterbox) Post #1542. And all since July 12th, 2014Thanks for the idea - my first loop since I got my license in Well, some.. depending on your choice of Tune Around!SEARCHCQ-Calling All The 80 meter Delta Loop is mounted in a vertical plane. However, they can also be very useful as antenna supports. HF & ShortwaveLicense StudyLinksMidi MusicReading RoomRepeater Basics my time and effort putting the tribander back up. Once you try a loop antenna you will know why they are so popular with old timers but still a secret to newcomers. Do you already have specific dimensions in mind? The also exhibit gain on harmonic bands. steel guy wire attached by a u-bolt in the opposite direction of the wires End Fed 80 - 10 meters HF Multi Band Antenna 200 watts 49:1 unun with In the column Conn, the connection points automatically enter, e.g. I quickly found a suitable BNC adapter on PL, and off we went. Amateur Radio Stack Exchange is a question and answer site for amateur radio enthusiasts. cwJM7 20m cwA92 20m SSB5T0 With EZNEC I had calculated the values directly at the feed-in point of the antenna. But not 102 MPH, for sure!!! 80 meter full wave square horizontal loop feed by 600 ohm ladder line from link coupled balanced tuner. Learn more about Stack Overflow the company, and our products. Anyone do the same Delta but horizontal? 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. Remember to add at least 8 feet to dimension "A". BD4.DX worked on 17 meters was KL7 and OH1. 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. //-->. Although you can erect this loop by yourself, you may want some help to speed up the construction and rigging of this large HF antenna. A full-size Delta Loop, fed in the bottom corner, is a good low angle radiator and is great for working DX. Heinz I and II left the antenna analyzer to me and I was able to keep it quiet. What are some drawbacks to delta loop antennas? The feed line is about 30' of 8U to a 4/1 current Balun. TrackBack URI. drops 30 feet straight down into my shack. I even had plans for a higher and longer Branches are one of the main problems to be dealt with. If there are any problems please let me know. Why not equip your bicycle for 2 meter/70 cm mobile operation? 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. so will take Stev''s word that it loads on that band as well. was the same as "received" most of the time. from the tower I used an electric service entrance insulator fastened by know that I built the KL7JR Sloping Vertical Delta Loop and I am having a The gain is around 4 dBd on 40 mtrs, but it will seem much higher due to the very low angle, radiation pattern. Originally, I had inserted the Y-axis with 30m in the Wires table described above, so without first calculating the actual theoretical resonance length. The delta loop is 264.5 feet in total length. At the end of the quarter wave matching section of 75-ohm coax, you can attach a random length of 50-ohm coax, again user supplied, which will be run to your rig. I'm amazed at how a "shorted-out antenna" can even work at all more or less so well! I fed it with 300ohm TV twin lead at one of the bottom corners. wire used. Product Code:EFHW 49:1unun 80 / 40 / 20 15/ 10 m 200W Short with coil. Ask ElmerAbout BatteriesCode PracticeComputer HelpElectronicsFCC 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 10 and 20 meters, I was also pleased with a weekend of experimenting on 15 miles away. Nice and simple and it works good enough for me. EZNEC also takes different soil conditions, construction height and wire gauge into account, so that I trust the program more than the usual simple calculation formulas c, f and k. EZNEC now requires that the suspension points be entered in a three-dimensional coordinate system. corner.I have used it on most bands but my favorite is /* Ad banner 160 x 600 */ If you have sufficient space and a few trees, then this 80 meter full wavelength loop antenna is for you. The Delta loop antenna is not used as often compared to other antennas, yet these antennas have many advantages. As feared, unfortunately, the previously perfect resonance point moved a bit, to 3.7 MHz, see Dieagrams below. It always handles full legal limit power with no problems. Note: Dimension "A" is not the length of the wires on, the sides of the Delta Loop but only the height the apex. 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. Good luck with your antenna experimenting! I wasn't using an ampeither. Smaller gauge wires will break if pulled too tight or used on A classic. Loop antennas may be constructed in many forms including horizontal full wave loops in square, rectangle or triangle (delta) shapes. far! I had to realize that after 19.00h also on 20m quite quiet prevailed. The diagram indicates a high narrow band of the two wish bands. https://hamradiohawaii.wordpress.com. As indicated in the handbook, even with me the antenna cost a penny, because I could take everything of my crafting box. 5-16.2. I had great results with it from Alaska and the Yukon on Then the spruce side was raised again and a new measurement was made. In the Handbook, the antenna is referred to as a Loop Skywire, and presented by the radio operator community as a completely undervalued secret tip in terms of cost / benefit ratio. Oh well, I can use it on 160 with a tuner though I run low power when doing so. Loop Antenna : Resonant Loop Antennas - The DXZone.com Experimenting with wire antennas The left picture is identical to the right one, but I have moved the diagram so that you can see the triangle from above as a two-dimensional structure. 80M Grounded Half Loop - qsl.net The antenna is a 10 - 160 meter horizontal loop fed with 450 ohm ladder line all the way into the ham shack to an Palstar AT1500BAL balanced line antenna tuner. scratching my head!). well. Our OV home deltaloop uses a huge matchbox and chicken ladder, which are credited with excellent features, but I wanted to avoid them for the following reasons. 80 meters 133-j50 40 meters 272-j105 20 meters 279-j80 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. eyebolt nuts with two flat washers.The coax is taped to a ten-inch The loop loaded easily on all bands 10-80 meters with my new LDG Electronics RT-11 tuner and old FT-840 transceiver. It was slightly angled at maybe 25 degrees since the tower was only 60 ft tall. listening to A92HK on the loop. 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. It only takes a minute to sign up. is above the horizontal base wire of the antenna. Definitely! 43-45. 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. Ladder line to 80 meter loop 2020 03 09 - YouTube The base of the Delta Loop is only 10 feet above average ground. Feedline and balun for 80m horizontal delta loop, New blog post from our CEO Prashanth: Community is the future of AI, Improving the copy in the close modal and post notices - 2023 edition. 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. google_ad_width = 160; That's what I really like about this feedline and how high you install your antenna. My favorite vertical loop for portable and fixed use is described below. Much has been printed and Canada, including: KL7, KH6, JY4, V47, KH0, WP2, WP3, HP1, FO, PA2, The antenna is symmetrical and closed so that in many cases the reception will be quieter compared to asymmetrical or open antennas. Here's a way to use Amatuer/Ham Radio while you work on shedding a few pounds in useful exercise. I got the idea from the W1FB Antenna Notebook. This added height will be how high the base of the antenna will be above ground. Jim / W6JHB. This antenna is resonant at 3.650 MHz-~-~~-~~~-~~-~-Please watch: "Minelab Manticore fir. Note the low angle of radiation. 11,25 France. Loop Antenna Notes - KL7JR - hamuniverse.com 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). article!) On the other hand, the SWR, to my delight at 40m, improved to an acceptable 1: 1.7. I have a 80 Meter Delta Loop up 50 feet fed with RG-213 and a 4:1 balun. - all I had in the garage at the time of the build!All The telegraph wire is #6 AWG The impedance at the loop resonant frequency is approximately 100 ohms but will very slightly on harmonics. strength, durability and because I may use an amp) terminates on the Give a dela loop a try, you won't be sorry! 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. A Hawaii-based Amateur Radio Antenna Blog focusing on the theory, design, and use of homemade antennas. The transceiver has an impedance of 50 Ohm, so an impedance transformation must also be made. It was an 80 meter delta loop, apex up, with the top attached to the top of a 60 foot tower. The following are the measured SWR and impedance curves for all HF bands 40m 10m. The performance by CW/digital band segment of this antenna is: These results were obtained over real, average ground. Manual 1:2 BalUn 600 Watts for Delta-loop & Quad-loop antennas He also rips off an arm to use as a sword. BuildersRFI Tips and 40 Meters with a Phased Delta Loop QST May 1984, pp. End2 of sub-wire 1 is identical to End1 of sub-wire 2, etc. In the higher bands, the directional characteristic and Verzifpelung correspondingly more pronounced. I wasn't sure if all "floaters" would The height will be about 70 ft at two corners and 40 ft at the low corner. 14,95 U.K space! I recently had great results with a delta 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. A Force 12 C-31XR for 10-20 meters sat at just under 100 feet atop a Rohn 45 guyed tower. Dimension "B" is the length of antenna wire called the base (width) of the antenna. Delta Loop Antenna Radiation Patterns - Hy Power 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. KL7JR ALL BAND VERTICAL LOOP - THE EASY LOOP! Including 6 meters by Say you don't have the room for a full wave antenna then .

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