Stacking dissimilar yagis and loop yagis directive systems stacking dissimilar yagis and loop yagis w8zn note the problem is that most hams are lucky to have one tower and then they try to stuff antennas for ten vhf uhf bands and keep the 50 mhz yagi out of the higher frequency antennas aperture. Yagi uda antenna calculator you may want to combine it with a folded dipole. This design can then be optimised or scaled to suit particular requirements. If you decide you really need a yagi with more elements, here are the lengths of them. Many yagi designs have been scaled and modelled to permit performance comparison also in this same frequency region.
If you have no particular preference within a given ham radio band, then simply enter its center frequency i. The separation will remain the same for all the elements and the lengths of these extra directors will all be the same as the 1st director. Long yagi are commonly used from the 144mhz amateur band to the 2. About a simple 7 element yagi calculator the resource is currently listed in in a single category. Calculator 3element yagi maple leaf communications. The main category is antenna design calculators that is about antenna design calculators. I thought maybe this software can benifit other opeartors and homebrewers alike. This calculator is designed to give the critical information of a particular beam antenna, in this case a seven element yagi, for the frequency chosen.
The dl6wu yagi is highly regarded as being easy to build with repeatable results, broad bandwidth and a. The yagiuda array of loops will outperform any commercial tv antenna. With yagicad it is possible to enter a base design from scratch or use one of a number of saved well known designs. A well designed yagi antenna as per the design given below can cover a line of site distance of even 5 kms with just 1 watt rf power. Download yagi designer software for windows for free. The faraday loop is commonly installed within the main loop opposite the capacitor and formed into a circle.
If there is a defect in materials or workmanship within. Folded dipole fully insulated from boom directorreflector diam 2. Antenna, ve3sqb ham radio antenna design software programs. Yagi calculator is a program build to produces dimensions for a dl6wu style long yagi antenna. This calculator is designed to give the critical information of a particular beam antenna, in this case a three element yagi, for the frequency chosen. Yagi calculator 7 october 2019 improved operation with two monitors and resizing download yagi calculator version 2.
Antenna calculator software free download antenna calculator top 4 download offers free software downloads for windows, mac, ios and android computers and mobile devices. Shielded loop antenna yagiuda array of loops linuxtvwiki. Here is a simple antenna calculator for two popular forms of ham radio hf wire antennas. This post highlights some of the technical and intellectual property points concerning the loop fed array lfa high performance yagiuda antenna designs created by justin johnson g0ksc1 and his computer technique using nec and selfrefining particle swarm optimization and other genetic algorithm techniques this is very similar to the technique used by. Free online engineering calculator to find the dimensions of a yagi uda antenna for a given frequency range and length. Antenna design calculators category is a curation of 83 web resources on, parallel square conductor transmission line calculator, analysis of antenna mast strength and bending stress, full wave loop antenna calculator.
Although this online calculator is intended to assist with designing and building homemade, ham radio loop antennas for use in the hf bands, magnetic antennas have been. The calculators for other antenna types such as parabolic,horn,dipole and patch are also mentioned. The dl6wu yagi is highly regarded as being easy to build with repeatable results, broad bandwidth and a useful pattern. This program uses different formulae for 2, 3 or multielement designs and includes element tapering verticals covers all the common types with a coil calculator built in for the antennas that require them.
Fullwave loop antennas can be large at lower frequencies, but they are quieter than dipoles and have more gain broadside to the plane of the loop. I have found a very interesting antenna calculator for creating loop yagi beams, the frequency of design can be selected in the parameters between 5 mhz and 4 ghz. Basic diagram of a small magnetic loop is shown below at the left. Yagi calculator is a windows program that also runs well on linux, ubuntu 8. Yagi calculator this is where you input the center frequency in megahertz. It is possible to make it to work at very high frequencies, as well than at relatively low frequencies, at the price of a huge size in this last case. This link is listed in our web site directory since tuesday oct 30 2007, and till today a simple 7 element yagi calculator has been followed for a total of 25050 times. This post highlights some of the technical and intellectual property points concerning the loop fed array lfa high performance yagi uda antenna designs created by justin johnson g0ksc1 and his computer technique using nec and selfrefining particle swarm optimization and other genetic algorithm techniques this is very similar to the technique used by ota dtv.
Use our simple calculator to determine approximate dimensions of materials needed to build a 3element yagiuda antenna, and then shop for your needs on our other pages and select from our inventory of aluminum, fiberglass, coax, connectors, and other parts and accessories for amateur radio and other radio applications. It has the best gain for its sizes and a correspondingly narrow main lobe beam. I ordered a 1296 45 element loop yagi dse 2345ly assembled painless exercise with advice from terry and had it within a couple of days. In this menu, you need to submit values of multiple. The downloaded program should work on all versions of microsoft windows and the interfaces are simple enough that they are likely to work fine in an emulator on mac os or linux. All you need to do is enter the desired resonant center frequency in the form below, then click calculate. All directive systems antennas are built with the finest materials available. Small transmitting loop antennas, commonly called magnetic loops or mag loops, can give surprisingly good performance when they are carefully designed and constructed.
Yagi calculator is a free antenna design and analysis software for windows. Education software downloads yagi designer by goforth laboratories and many more programs are available for instant and free download. This program calculates the focal length and x, y coordinates for a parabola of any diameter and depth. Enter the desired frequency then click on calculate and the optimum values for that combination will be displayed in feet, inches and fractions of.
A circular loop is ideal, but squares, triangles, and other shapes can work well. The yagi antenna is a narrowband antenna designed to work only on fm channel. This software can not only be used to design but also to find out antenna gain, stacking distance, and standing wave ratio swr to design the antenna, you need to go to task design yagi menu. A delta loop and a yagi antenna, placed at the same height from the ground, show a very different take off angle elevation of the main lobes signal.
Some are based on lookup tables, some completely hide their algorithms. Instructions my suggestion is that only the broadband model should be made as there is no gain advantage over the original narrow band version. Antenna calculator calculate your dipole, 3 element yagi etc find the length of a dipole. Works either in standard and metric units, and let you choose on material, and loop shape, as circular, square or octagon. The yagi antennas overall basic design consists of a resonant fed dipole the fed dipole is the driven element and in the picture above and the second from the left side, with one or more.
We found it difficult to get a great match but i thought id resurrect the project earlier this year to enter some random saturday contest that was taking place on 6m. The calculators below can be used for quick plasma calculations not related to radio. Many model ti7140 handheld calculator and the above formulas. It will be compact, provide a high gain and a good signal quality. Yagicad is a fully integrated analysis and design package primarily intended for vhf yagi aerials. It is quite possible, that other calculators deliver slightly different results. The formula and basics of yagi antenna calculator are also explained with example. The smaller is the take off angle, the bigger is the distance of the bouncing rf signal transmitted by the antenna, the better are the chances to make connections at an impressive distance. The picture at the right shows my configuration mounted on a 7foot pvc mast 1. Loop antenna calculators suggest that a loop of that size can be tune from 40 to 10 mtrs with a variable capacitor of 10180 pf. The yagiuda antenna is the most recognized antenna. Projects based on g3jvl calculations but widely optimised by nec software and customized for best performance. If you want to put this thing outdoors, do not use brass, as it. Click on any bold model number below to view or download a pdf manual.
This is an application designed to generate data for the construction of long yagi antennas for v. Its a light magnetic loop antenna calculator that run on ms windows, and allow to calculate capacitor values and voltage based on loop circumference, conductor diameter, desired resonant frequency and the operating power. This page covers 3 element yagi antenna calculator. It produces maximum gain but requires tweaking for the number of elements. The author who works successfully via eme on this band wants to describe his own yagi design and give some of hints for the construction. Using this software, you can design and build your own yagi antenna. The dl6wu yagi is highly regarded as being easy to build with repeatable results. A simple 7 element yagi calculator resource detail. We take great pride in building a quality product that will give years of good service and performance. To be combined with a yagi uda antenna or used as is. The correct lengths for the various models will be displayed in the chart. Lfmf small loop antenna properties calculator this calculator will allow you do get a feeling on the performance of small, magnetic loop antennas.