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. ),I used my 50-foot tall I had great results with it from Alaska and the Yukon on Well, some.. depending on your choice of 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. How to choose antenna "pigtail" pragmatically? The site will be something of which everyone involved can be proud to say they were a part. 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. Should I re-do this cinched PEX connection? Well, the Until Monday, 12/17/12,when a 102 MPH windstorm hit my QTH I had four HF antennas at my QTH in Eastern Oregon. This antenna normally has about a 3 DB gain over a 1/2 wave center fed dipole. Likewise, the advantages of a coaxial cable compared to a chicken ladder with Matchbox for this type of antenna are practically and metrologically documented. At 3.6 MHz I actually have excellent values with 56 ohms and SWR 1: 1.5. Dimension "B" is the length of antenna wire called the base (width) of the antenna. HF & ShortwaveLicense StudyLinksMidi MusicReading RoomRepeater Basics The Loop Skywire QST November 1985, pp. 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). rope to whatever was handy (i.e.- nearby barn roof, tree etc.). google_ad_slot = "1982258389"; To build this antenna you need a lot that is at least 100 feet across. Hi Jerry, I had a similar antenna up for a while. fence insulators.Once the support mastsare complete with guy Loops are quiet antennas compared to verticals and dipoles and are omni-directional. Tune Around!SEARCHCQ-Calling All eyebolt nuts with two flat washers.The coax is taped to a ten-inch 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 antenna is symmetrical and closed so that in many cases the reception will be quieter compared to asymmetrical or open antennas. Thanks again Glenn, that all makes sense. Opinions please? AND IT IS WORKING DX JUST FINE. Using a 160 meter full wave loop in that fashion is likely to be counterproductive. Conditions have been average lately so it has to get better as the propagation improves. I don't have 6 meter capability (yet!) This 1:2 BalUn scores very well both in terms of common mode current attenuation and impedance matching. 160M Loop Antenna Project - Marbut 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. A Force 12 C-31XR for 10-20 meters sat at just under 100 feet atop a Rohn 45 guyed tower. 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. Hosting. What parts of the bands will you use? I had to realize that after 19.00h also on 20m quite quiet prevailed. Ladder line to 80 meter loop 2020 03 09 - YouTube 20m cw worked tonightI am currently For KW I have an 18m Versa-Tower and 3-Element-Beam for 20/15/10 m, with which I was active mostly on 20 m, because lately on 10 and 15 m relatively little was going on. Thanks. The bandwidth at SWR. G5RV Multi Band HF Dipole Antenna. The best answers are voted up and rise to the top, Not the answer you're looking for? steel guy wire attached by a u-bolt in the opposite direction of the wires Post #1555. I am new to HF. Feed point is approx 18-20' AGL and the Loop is mostly a square box. And all since July 12th, 2014Thanks for the idea - my first loop since I got my license in Finally, I found the best description in the ARRL Handbook. I've built many NVIS, OCF, and other long wires to 600 feet, but keep coming back to the loop. (www.cebik.com) Do a 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 direction of fire is broadside to the antenna. 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. It outperforms dipoles and OCF antennas. google_ad_height = 600; feedback is appreciated. Note: Dimension "A" is not the length of the wires on, the sides of the Delta Loop but only the height the apex. Please check for current shipping costs the shopping basket or on the checkout page. "The Loop Skywire", I should add to my previous comment that I feed my loop antenna with balanced feed ladder line required for the tuner mentioned here. For Amateur Radio Antenna Topics and Discussions, stay here. Do you already have specific dimensions in mind? 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. The performance by CW/digital band segment of this antenna is: These results were obtained over real, average ground. AND IT IS WORKING DX JUST FINE. The 80 meter Delta Loop is mounted in a vertical plane. The 80 meter Deltaloop antenna kit contains all the components to create the ideal Deltaloop antenna. That has left me with the last minute idea 80 meter delta loop as my only antenna. This is done so you can uncoil the antenna. Generating points along line with specifying the origin of point generation in QGIS, xcolor: How to get the complementary color. I have read much about impedance, SWR, quarter wavelengths, and I simply do not have the background to make sense of it. 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. This added height will be how high the base of the antenna will be above ground. Per the Alpha Antenna website; "Portable HF Magnetic Loop MagLoop antenna with cove. miles away. google_ad_height = 600; Now we're in Folsom and get all kinds of strange weather! my portable outings! using the antenna 4 years. I wish I had tried this antenna sooner in my ham hobby years. stuff to build it was on hand-no cost! End2 of sub-wire 1 is identical to End1 of sub-wire 2, etc. In the following picture the SWR can be seen again for the range 3-4 MHz in high resolution. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); 7,25 The Netherlands At 7 MHz I have theoretical 128 ohms and SWR of 1: 2.8. Overall I thought this was a fantastic antenna. and 17 meters.DX worked on 15 meters: KL7, HL5, JR1, KH0, RV9 and Click here for the order form: Order Form, Telephone: (610) 317-9779 Address: 1843 Renwick Street Bethlehem, PA 18017. It seemed to do better than a 160 meter inverted-L and a 240 foot dipole fed with open wire up 40 feet. With the SWR button you can now display the resonances of the antenna structure over any frequency range, as shown below. No it does not outperform a yagi but it will load up 80 thru 10m(except 30m) using the ATU in my TS450. In the following, the construction of a simple multiband delta-loop antenna for the bands 80-10m is described. At 40 m she was then shifted from the perfect 7.05 to 7.28. Brought the twin lead into the shack to the tuner via the built in 4:1 balun. Joseph. version in the future as mentioned in the article. 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. For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. Believe me when I say, it was the best all If we make the loop much longer or shorter, we would end up with the antenna being unsuitable for some of the bands. The exact values for the best SWR and other interesting values can be read in the lines above the diagram. If you need any help, we are glad to assist you with writing your article based on the information you supply. Hy Power Antenna Company - Delta Loop Antenna However, they can also be very useful as antenna supports. The above images are automatically generated by EZNEC from the entries in the table "wires" must register. The opposite end of the feed point is approximately 35' AGL. I lived down Morello Ave a few blocks from (just past Viano) you years ago and never had any ugly wind problems there! up each mast one-by-one with the rope and pulley. From my Balun to my tuner with a short piece of low loss 50 ohm coax. It is a very easy task to attach this wire to the center insulator. Anyone do the same Delta but horizontal? 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 So, my "longer" loop is I also have a home grown horizontal Loop up. Although I have mostly tried this antenna on Ham Radio-A 40 meter folded dipole antenna using w 2 meter VHF Halo Antenna Assembly and Testing. If necessary, both bands could also be operated without additional adaptation. According to Rich, this antenna is resonant at 3.650 MHz. by W0MHS, QST Nov. 1985, page 20 and ARRL Antenna Book 16th edition, pages A multi band inverted delta loop antenna project that can be used from 40 to 10 meters band with full details and analysis of antenna performances on each band, document includes EZNec reports and setup pictures, 1996-document.write(new Date().getFullYear()) The DXZone.com - Terms of Use, Copyright & Privacy Policy, [ Hits: 1002 | Votes: 4 | Rating: 7.25 ], [ Hits: 2760 | Votes: 6 | Rating: 3.17 ], [ Hits: 4915 | Votes: 18 | Rating: 7.11 ], [ Hits: 2763 | Votes: 7 | Rating: 4.86 ], [ Hits: 65323 | Votes: 68 | Rating: 6.66 ], [ Hits: 9614 | Votes: 18 | Rating: 3.83 ], [ Hits: 32807 | Votes: 35 | Rating: 6.16 ], [ Hits: 15602 | Votes: 47 | Rating: 7.43 ], [ Hits: 3874 | Votes: 6 | Rating: 5.33 ], [ Hits: 2038 | Votes: 4 | Rating: 3.75 ], [ Hits: 25985 | Votes: 5 | Rating: 3.6 ], [ Hits: 6903 | Votes: 3 | Rating: 8.33 ], [ Hits: 20377 | Votes: 15 | Rating: 3.28 ], [ Hits: 1441 | Votes: 6 | Rating: 3.17 ], [ Hits: 4278 | Votes: 3 | Rating: 3.33 ], [ Hits: 7666 | Votes: 6 | Rating: 7.67 ], [ Hits: 1763 | Votes: 4 | Rating: 3.25 ], [ Hits: 12797 | Votes: 18 | Rating: 6.34 ], [ Hits: 1471 | Votes: 4 | Rating: 5.75 ], [ Hits: 2310 | Votes: 16 | Rating: 6.13 ], [ Hits: 7020 | Votes: 13 | Rating: 7.54 ], [ Hits: 7118 | Votes: 7 | Rating: 7.28 ], [ Hits: 6697 | Votes: 8 | Rating: 4.62 ], [ Hits: 81072 | Votes: 41 | Rating: 4.88 ], [ Hits: 1779 | Votes: 11 | Rating: 8.55 ], [ Hits: 3690 | Votes: 13 | Rating: 5.92 ], [ Hits: 2059 | Votes: 19 | Rating: 6.12 ], [ Hits: 3928 | Votes: 9 | Rating: 6.55 ], [ Hits: 9963 | Votes: 4 | Rating: 6.75 ], [ Hits: 11083 | Votes: 10 | Rating: 6.5 ], [ Hits: 12961 | Votes: 8 | Rating: 7.5 ]. RG 213 coax (chosen for So much so, Experience report of a hearing aid beginner Motivation for this review Based on my own experience as a fresh or inexperienced hearing aid wearer, I would. The part wire no. With the antenna calculation program EZNEC, the setup is theoretically prepared and documented with the inexpensive antenna analyzer miniVNA or graphically documented. with the other three supports. What is the height? 573. weeks of casual operating! The diagram indicates a high narrow band of the two wish bands. a 80 meter full-wave horizontal loop which would allow operation on all HF 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 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. Loop antennas may be constructed in many forms including horizontal full wave loops in square, rectangle or triangle (delta) shapes. TrackBack URI. TricksHam SatellitesShortwave ListeningSSTVSupport The SiteSTOREVhf and UpContactSite MapPrivacy PolicyLegal StuffAdvertising Info (Updated August 1, 2014 I like loops. How high off the ground? http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon). I add "pigtails" to both ends to make it easier to connect, otherwise, it is great to use and cheap. on signals mentioned above over the two-day period of tests.I am Bestellingen worden uitsluitend verzonden op dagen dat wij geopend zijn. economical and easy to build and install, works on all HF bands and KL7JR, 1. 7 Delta Loops for 7 MHz. This allows us to adapt an unbalanced system (coax cable) to a balanced antenna system (delta loop or quad-loop antenna). The 1:2 BalUn is built around two FT240-43 ferrite toroidal cores. the loop as compared to the Carolina Windom. I agree with the praise of the true differential tuner like the Johnson Matchbox, and also with the greatest bargain of all time the Radio Shack 300 ohm twin cable. It is extremely easy to build and only requires 136 The center feed optimizes the results compared to a corner feed. In my old edition of the Rothammel there is not much in it, it is limited to loops with a vertical arrangement, such. 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. The Delta Loop is not only a great transmitting antenna but a low noise receiving antenna. Ideally you would want to run the balanced line all the way to your antenna tuner. It was perched on a 2.5 inch OD, 1/4 inch thick wall, moly steel mast and turned by a Tailtwister. KL7JR Sloping Vertical Delta Loop 80-6 Meters - hamuniverse.com Thats actually all you have to do to start the calculations and see the results. After getting fit in theory, I started building the antenna. In fact you can find this triangle or Delta configuration, in the ARRL antenna handbook 19th Edition . lived on 10 acres in the country, I decided to make my horizontal loop