20m vertical loop antenna A vertical dipole antenna has constant gain in any horizontal direction, but zero gain in vertical direction (3). Configure as a circle, square, rectangle or triangle (delta). 5MHz) loop (or frame) antenna has been really popular, and that there are loads of other radio amateurs who have taken my design and “ran with it” to produce variations that all have some great improvement. Layout of the 5-element wire delta loop beam. Each time I changed my QTH, I had to re-adjust the length of the jumper. It enables easy adjustment for resonance by removing or adding wire. I just let the jumper wire hang down. QRPGuys Portable 40/30/20m Tri-Band Vertical Antenna – $30 ***Please verify your address with PayPal before ordering. We will be open for orders and shipping when you see the PayPal buttons re-appear. *** We are closed due to illness. Feb 5, 2022 · The 20m EFHW Vertical antenna and Yaesu FTDX10 radio combination really does have good ears As for being heard, well it’s a similar story, below is a map showing all the stations that heard me as reported on the PSKReporter website. If vertical, or near vertical will provide low angle radiation which is good for long range DX in the direction of the loop (looking straight on at the front) and near DX off the sides. 150 MHz, and the dimension of 102 ft is derived from the formula for long-wire antennas which is : Delta Loop DX20 FULL WAVE DELTA LOOP. net is a Web site dedicated to ham radio (amateur radio). I mentioned in a Ham Radio Workbench pod… G4NSJ – 20m vertical aerial antenna A COFFEE-BREAK QUARTER WAVE VERTICAL FOR 20 METRES: Let’s take a break by building a very simple and yet extremely effective aerial for 20 metres. Configured as a delta loop or equilateral triangle, if laid flat will be good for near DX. Delta Loop Mk1 The Mk1. requirements Let’s start with the requirements: I Sep 26, 2017 · Delta Loop for the 20m band A delta loop antenna is not particularly suitable for SOTA. 5 My Homebrew 20m Delta Loop My mainantenna for general use on 20m is my homebrew delta loop. THE ANTENNA LENGTH : The design center frequency of the full-size version (configured as a 3/2-wave dipole on 20m) is 14. My SWR testing on the second harmonics showed RF and SWR needles swinging up and down together which usually isn't a good indication of an efficient antenna. However, you may find that your mono band delta loop may tune up on it's second harmonic at a higher frequency eg. The end fed antenna works well in horizontal, sloper, and vertical configurations. Using the standard formula of 468 divided by frequency (MHz) we get the following lengths for each leg of our antenna: (going lower than 20M the lengths get unmanageable) 20 Meter Circular Magnetic Loop by Maurizio Malaspina - IW6DFW My operating conditions are: - Radio IC-7000 @ max power (100W) - 20m of RG58 A/U coax --> more or less 75 percent of power to antenna @ 14MHz Oct 16, 2024 · A vertical delta loop is a practical antenna for low bands, popular for its simple design requiring just one support. Its shape, an equilateral triangle in free space, yields optimal gain and radiation resistance. , KL7JR A simple, cheap and easy to build 33 feet long vertical antenna that works DX on 20 - 10 meters including WARC BANDS. However, it also requires retuning quite often in order to stay on-band. It is a full wave loop designed to operate on 61 - Tri-band Delta Loop Antenna for 80m - 40m - 30m For long-duration portable outings, or fixed station use (if you have the room), I'd go with the loop antenna simply due to the economics ($20 for wire vs. This requires one single central support at the apex, great for rapid deployment. files. 8m wide, for 10 and 20 meter band. With permission from Joe Everhart, (N2CX), we have adapted his 40-30-20m portable vertical Jul 24, 2015 · Antenna diameter: 5. For permanent Quarter-Wave Vertical Antenna Length Calculator A quarter-wavelength antenna is easy and inexpensive to build and can be an effective antenna with a low angle of radiation (that is, power is radiated out, not up). Technical support via email is the only service available until then. . horizontal loop→ Jan 6, 2023 · As my best DX antenna - the portable hexbeam - is not always an option from a time, effort or space perspective, I am always curious if there is another design that could beat my default go to option: the vertical end fed half wave antenna. 4 days ago · After relocating, DL2HCB designed a multiband loop antenna to cover 10-20m with an open-wire feed for impedance matching and compact installation. Reception in my densely populated area on the lower bands is challenging, often facing up Continue reading Reception comparison: vertical vs. It is an example of what can be done with a bit of creativity. 5 inch diameter conductor 14. about $150 and up for a commercially made multi-band vertical) and because I'm partial to homebrew wire loop antennas. 79dBi at 30 degrees when used over average/poor soil types. Mar 26, 2017 · My antenna is a full wave 40m delta loop which also matches well across 20m. Observe established safety practices when working with antennas, and avoid proximity to power or utility wires. 133 - Collinear Zepp Antenna 134 - Taylor Vee Antenna for 20m 135 - Collinear Vertical Antenna 6dB-Gain for 2m, 1. Whether operating on HF, VHF, or UHF bands, the choice of antenna significantly influences signal strength, coverage range, and Learn how to construct a great 20 metre delta loop for your suburban house by following this simple guide. I had thrown Antenna Length Chart in Feet and Meters 22-Jun-2007 09:30 AM Feb 12, 2025 · This article documents the author's journey in building, modifying, and testing a DIY short vertical antenna for 40, 30, and 20 meters, with potential 80m capability. Permanent installations should be equipped with appropriate static and lighting protection. 8 dB below 100%) <- this is considerably better then 40m Antenna bandwidth: 65. Despite its reputation as a Multi band antenna, it is a single band antenna. Dec 29, 2023 · Looking for a wire antenna that’s inexpensive, easy to build, and works great for DX above 40m? A delta loop and its variants can make an effective single-band or multiband […] Mar 22, 2019 · The magnetic loop design leads to antenna which is tuned to a very narrow frequency range, giving good selectivity. The coverage angle of the Delta-11 is quite low, similar to a vertical antenna. I wanted a full wave vertical loop for 20m but the coils then had to be very long which exceeded the 30% rule (ie-do not make the coils longer than 30% of the wire antenna length). 0 feet Now calculating at the top end of 14M band Circumference of 16. In antenna theory, the quarter wave vertical radiator that you have hanging from the tree will be virtually reflected across the ground plane to create the “image antenna” so it is making a virtual half-wave dipole. This antenna may be built as a 20 meter, 17 meter, 15 meter, 12 meter or 10 meter monoband vertical antenna. There have been many in-depth tests and simulations, all with exceedingly good results and Dec 2, 2023 · Given that there is a null broadside to the loop, and useful lobes off the edges, the most effective way to use this as an antenna is to install it horizontally above ground. While the match is good the pattern is not ideal for DX. Nov 28, 2023 · For vertical polarization, the loop is fed in the center of one vertical side, or more precisely, 1/4 of the wire length from the top (and bottom) centerline of the antenna. The larger the area of the loop the better it will work. This is incredible for POTA, SOTA and other portable/field operations. For disassembly, disconnect one side from the insulator and then roll the antenna as a single wire. On 11 and 10 metres, the SWR is low and the antenna can be used without a tuner. Feeding at a corner or midpoint produces vertical polarization. Feb 14, 2024 · An EFHW for 10m, 20m and 40m is one of my go-to antennas in the field. It's hard to believe says VE2BMC, but going from 1/4 wavelength vertical to a simple rectangular loop can lead to 3-4 "S" units improvement. A Vertical Dipole Doing so will interfere with antenna performance. Feb 12, 2025 · eHam. Join me as I make a very simple, yet effective antenna for the 20m amateur band made entirely of RG-58 coax and it doesn't use radials, so a bonus if you haven't got the space to lay any out on I built a Delta Loop for 10 meters and positioned it in a non-traditional way to make it vertical. a 20m quarter wave vertical antenna with a 6m telescopic mast 1 1 balun and spiral wound driven element designed for qrp at 14 285 mhz the antenna s performance exceeded expectations delivering low swr and surprisingly quiet reception initial testing yielded successful contacts with european stations and ec1kr showcasing its effectiveness compact and easy to deploy the antenna promises to be 1 day ago · Multiband delta loop by DL2HCB A 10-20 meters coverage delta loop antenna. Vertical loops are good DX antennas. Transmitting on these bands works well with a Cobweb antenna for 10m to 20m and a wire with a CG-3000 automatic tuner for 30m to 160m. Aug 24, 2025 · Lowering the loop will decrease the gain and increase the feedpoint impedance (both due to ground losses), and lower the resonant frequency of the antenna. Jul 11, 2025 · Alan’s suggestions have been a tremendous help in designing this latest iteration of my rapid deployment, field expedient, portable delta loop antenna for the 20m band. Initially inspired by Parks On The Air (POTA), the author explores pedestrian mobile operation and details various experiments to enhance antenna performance. I have been using quarter wave vertical whips in the past; usually ground-mounted with 4 radial wires. So I read through the notes of DL4AAE (who designed the antenna DL3TU wrote about) and built the same May 10, 2022 · 5 Element Delta Loop last updated 10 May 2022 This 20m wire beam antenna was designed for Field Day use, where it was strung between two trees. Multi-Band Delta Loop Antenna 15m 2D Far Field Plot Moving up to the 12m band the angle of maximum radiation now comes down to 18 degrees with a gain of 8 This is a handmade 20m Delta Loop Antenna with a built in 4:1 Transformer. Great antenna for working 20m band DX. This antenna needs a tuner for most bands, either remotely controlled directly under the antenna, or at the station. 7 kHz <- No problem here, gives you 65khz space to move around before Jan 15, 2024 · There is slightly more near vertical incident skywave (NVIS) radiation on the 15m band and so the antenna should provide short, medium and long haul contacts with the latter being favoured. The ground side of the antenna is a series of radials that all group into a connection at the base of the antenna, and are insulated from the pipe (red part). This is one example of a wire quad antenna. 8x2. #hamradioantenna #deltaloop #hamradioLink to antenna sketc Mono Loop Antenna• The insulator in the horizontal leg near the left is an option for convenience. 20m Fibreglass Vertical Mobile Antenna by EA5AVL https://rsars. The EFHWV 20M Favours DX due to it's low, 15 degree off the horizon angle of radiation, What this means is your signal will travel much lower out from the antenna as a result bouncing off the ionosphere at a much further distance giving you a much longer Congratulations! You are now the proud owner of a Comtek 20 Meter Vertical Antenna. May 30, 2018 · 20m Loop Antenna by Harry Lythall – SM0VPO Introduction I recently saw that my 80m (3. 61 - Tri-band Delta Loop Antenna for 80m - 40m - 30m Nov 27, 2023 · His 20M delta loop features a 4:1 transformer so it can be fed with 50 Ohm coax like my RG-316 (which is also easier to pack than twin lead). May 25, 2024 · One of my long-term experiments involves receiving on HF. Recommended setup is an equilateral triangle with one corner elevated and a flat bottom elevated several feet above the ground which will produce less than a 2. Feb 24, 2021 · The Square Halo or Squalo is an easy to build horizontally polarized omnidirectional antenna, only 2. Dec 21, 2014 · LA8OKA's Corned Fed Delta Loop An example of the Corner Fed Delta Loop antenna made for 20 m. It includes images and descriptions of the antenna setup in a car. But if you really want just one band, you can cut a piece of copper pipe to exactly a quarter wave of 20M, roughly 200 inches long, and add some radials of various long lengths. Delta loop antenna designer Design a vertical-plane delta-loop antenna for one or more amateur HF bands, in one of two different configurations: apex-up - a symmetrical triangular loop with the apex (mid-point) at the top, and a horizontal section at the bottom. Gain 3. 350 Mhz as the highest frequency (FT8) 50 watts transmitter power I get these results: Antenna efficiency: 83% (-0. Vertical Loop Antenna Polarization The wave emitted by the vertical loop may be polarized vertical or horizontal depending on the feedpoint location A top loaded vertical antenna has several advantages over the conventional vertical, but the biggest advantage is that it's shorter in length. 3m, 73cm 136 - Bi-Loop Antenna for 20m 137 - Wire Beam 6dBd-Gain for 10m 138 - Sloping Diamond Antenna 4dB-Gain for 40m 139 - Twisted Loop Antenna for 160m 140 - DX RX Loop Antenna for 160m 141 - Hentenna 3dB-Gain for 10m, 6m, 2m THE KL7JR 5 BAND PIPE VERTICAL 1/2 Wave on 20 Meters by John Reisenauer, Jr. Build an easy and inexpensive portable antenna for 20 meters and other bands. Vertical plane loops tend to waste more radiation at high angles when they are 2 wavelengths or longer, which limits their application as multiband antennas. I was introduced to this antenna by M0DOL who I saw using one at the KDARS site over a year ago. Inspired by the mini-X-Q design, a modified 10m delta-loop was built, enhanced with a 1/4 wave shorted stub for 28 MHz using 450-ohm ladder line. Feb 24, 2025 · See how a 20 meter end-fed half-wave vertical antenna can dramatically improve low-angle radiation and DX performance from small lots and stealth locations. Find HF Vertical Antennas and Packages 20 meters HF Vertical Antenna Band and get Free Shipping on Most Orders Over $99 at DX Engineering! Antennas for Amateur Radio Rotatable Vertical Delta Loop for 20m, Antennas for Amateur Radio, Ham Radio. 0:1 SWR across the 20m Band. A vertical loop may be horizontally or vertically polarized depending on where you feed it. wordpress. The piece highlights challenges, SWR tuning, portability, and Note: The top of this page has links to various receiving antennas such as Beverage, "magnetic" loop, and vertical low-noise DX receiving antennas. The antenna delivers east End fed halfwave vertical for 20m HF Wire Antennas The Antenna is suitable for home or portable use. You might recall that I used his 20M delta loop antenna at Holmes Educational State Forest (see photo above) in early September. Nevertheless I’d like to show this design here because … Sep 26, 2023 · M0AWS 20m Band Delta Loop Antenna – 2D Far Field Plot The 2D elevation plot shows that the antenna will give a maximum gain of -0. 160 m loop on 80, 80 m loop on 40, 20 m loop on 10, etc. For reference, lowering the bottom of the 20m 50 ohm delta loop from 3m to 1m above ground decreased the gain by about 1 dB, raised the feedpoint impedance at resonance to 69 ohms, and Full wave, closed loop antennas are broadband, low Q devices and exhibit a theoretical gain of approximately 2 dB over a half wave dipole. 5 days ago · 20 M Vertical 20 m vertical antennas Trending Links A portable 10/20/40 mt vertical antenna The web page provides detailed information on a portable 10/20/40 meter vertical antenna designed for mobile operations, including modifications for 20 and 40 meters. Apr 10, 2023 · Multi Band Vertical HF Antenna showing loop at top and wire tucked down into pole Always wanting to put things into perspective here’s some details of the contacts I’ve made on each band showing how well this antenna has performed over the last year or so. loop was my first foray into serious antenna building. After seeing the results he was having I decided that I would give it a go and see if I could get similar results. pdf Sep 18, 2023 · There’s a portable wire antenna design I’ve been wanting to put on the air for POTA and SOTA for what seems like ages: a 20 meter vertical loop. After relocating, DL2HCB designed a multiband loop antenna to cover 10-20m with an open-wire feed for impedance matching and compact installation. The design can be scaled for other bands. com/2013/01/20m-helically-wound-mobile-antenna-ea5avl-iss-1-31. The formula for calculating the approximate length of a quarter-wave vertical antenna is: Quarter-wavelength in feet: 234 / frequency in MHz Quater-wavelength in meters: 71. 128 – 5-Element Log-Periodic Vertical Antenna for 80m, 40m, 20m Well, I always liked the 4BTV and 5BTV vertical antennas. 5 feet . The Delta Loop antenna is one of the famous ”magical antennas”, but in reality, the Delta Loop antenna is not as magical as it’s reputation. Parts used: 8 foot fence rail for the mastTV antenna roof tripod1/2 or 3/4 inch Jun 10, 2012 · The Delta-11 covers all bands from 20 m to 6 m with good results. Amateur radio antennas are critical components in any ham radio setup, serving as the interface between the transceiver and the electromagnetic spectrum. It requires much more space than a vertical and the set-up is more complex. 2dBd over a dipole antenna. Not many options for antennas, and using Hamstick type antennas was my last resort. zdkf igfkfhd kiqs qgxvw hsgisf tyjh ogmtvwe bovc amugn fxhlk mmjg zipre xnjd hnyu knsdkg