The calculator program available for download to design this antenna is in xls spread sheet format and requires that you have a program that will read xls spread sheet files. Cubical quad antenna calculator in java script let you calculate elements size and. 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. Besides the real antenna litz, hf kits also offer experimental wire. Antenna calculator antenna calculator is a useful tool when developing antennas for amateur radio purposes if you cannot remember the maths to calculate. Many hf antenna designs require physical length to achieve resonances at the lower frequencies. It has outperformed my other antennas dipole made from two mobile whip antennas up 20 feet and a vertical wo radials.
More compact versions were later designed with better swr bandwidth. Small transmitting loop antennas, commonly called magnetic loops or mag loops, can give surprisingly good performance when they are carefully designed and constructed. Hfwireantenna polarizaon impedance longwire loop windom vercal antennatuners dipoles. Download the ground planedipoleinverted v calculator by n2imf. Make a 40 metre loaded dipole amateur radio tips and howto. As required by the ftc, i declare that i earn a portion of the retail price every time you buy a copy after clicking on a link on. The correct lengths for the various models will be displayed in the chart. Dipole antenna calculator software antenna design calculator v. The first test was when i checked into the weekly ares net statewide ares ne for south texas, usually have to check in from an alternate net control due to a weak signal.
This program uses the formulae given in fcc oet bulletin no. The gamma match is the most used matching device used for yagi beams. The dl6wu yagi is highly regarded as being easy to build with repeatable results. The chicken wire wonder a unique broadband vertical. This lpda calculator is mainly based on the design procedure as described by l. Download yagi designer software for windows for free. Antenna calculator and design software free download as pdf file. This program is intended for approximate farfield calculations. This calculator provides quick estimation of antenna size required for a given gain and frequency. The measurements below are for building a simple dipole antenna. A good antenna design from the start also helps you to reduce timetomarket. Dipole and inverted v antenna calculator for amateur radio communications. An efficient resonant antenna 14 wavelength or longer produces a largeamplitude em wave for a given feed power, and produces little heat. This is an extension to the standard 2d hf package a numerical hartreefock program for diatomic.
Yagi calculator wc7i antenna info plus swr explained. I, claude jollet, am the author of the ebooks and paperback book advertised on this page. T he purpose of the calculator is to give you a quick overview of the feasibility of squeezing a loop into your available yard or apartment space. Yagi calculator is a windows program that also runs well on linux, ubuntu 8. Long yagis are commonly used from the 144mhz amateur band to the 2. Dipoles antennas are easy to build and can be very effective when placed half a wavelenth or more above ground. View antenna display, showing the wires making up the model of the fiveelement beam, with currents and 2d slice superimposed to show orientation. However, there is a way to reduce the overall length of an hf dipole through the use of loading coils. The antenna torque calculator this unique online tool helps ham radio operators to choose the right rotator for medium and large hf antenna systems. Designing the right antenna for your application is crucial to get optimum read range and reliability with nfc in your products. The simple calculator below uses the wellknown standard formula for determining the total wire length in feet for a single element single turn, full wave loop antenna, length 1005mhz. Wire antenna calculator amateur radio station ws6x. Instructions are included below for building the antenna in an example for 147. The log periodic antenna is the ultimate broadband beam.
New stations often begin operating on hf using an end fed wire or a vertical antenna, a recipe for disaster, sometimes even on qrp. The chicken wire wonder a unique broadband vertical antenna for the hf bands ill bet youve never seen a tapered area small helix tash antenna. In 1947, cubical quads began gaining popularity with amateur radio operators. Here is a simple antenna calculator for two popular forms of ham radio hf wire antennas. A phasing harness is basically 2 sections of 75ohm cable cut to odd quarter wavelengths x velocity factor, transitioning to a 50ohm cable, which is usually the transmission line.
This up and over, over and down design had been used in hf wire antennas. When running frequency sweeps, linear or logarithmic style swr, gain, fbratio and impedance linecharts are produced. I am a math geek, computer nerd, and recovering civil servant. A circular loop is ideal, but squares, triangles, and other shapes can work well. A very basic program for calculating the length of each leg of a 12 wave wire dipole antenna. Tvi fears have encouraged many people to shy away from the hf bands, in favour of vhf, uhf or 160 metres. This calculator is designed to give the vertical length height of a particular antenna, for the frequency and wavelength chosen. Adding inductors to your dipole makes it possible to reduce the overall length of the antenna. These ebooks on hf antenna basics, described on this page, are intentionally light on theory and heavy on practicalities. Courtesy of and designed by n2imf joseph r mielko this downloadable calculator will provide you with good starting measurements for a basic ground plane, inverted v or standard dipole antenna.
Easy swr adjustment calculator for vertical and dipole ham radio antennas youtube. Dipole antenna calculator software free download dipole. If you decide you really need a yagi with more elements, here are the lengths of them. Antenna design is an essential part of nfc readers implementation. It can provide high gain on a single band or moderate gain on multiple bands. Antenna, ve3sqb ham radio antenna design software programs. If you have no particular preference within a given ham radio band, then simply enter its center frequency i. This calculator can be used to design a slim jim or a j pole antenna. Works either in standard and metric units, and let you choose on material, and loop shape, as circular, square. Instructions are included below for building the antenna in. According to bob heil in his book, heil ham radio handbook, there were articles in qst and cq magazine showing how to.
Dipole, inverted v and ground plane antenna calculators. Make a 40 metre loaded dipole amateur radio tips and how. Dipole calculator, hf wire dipole antenna calculator for amateur. The calculator was successfully tested against the examples listed in this reference. The input impedance z in of the antenna is a function of the frequency of operation. Education software downloads yagi designer by goforth laboratories and many more programs are available for instant and free download. I have come up with a trio of webbased calculators which should help you design and build your own wire antennas no need to buy expensive kits when the wire you need is available at the local hardware store for a fraction of the price.
This calculator will help you to calculate the different wavelength of antennas based on the frequency. 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. The loaded dipole opens up the options for many armature radio users faced with space constraints. The following program will calculate the lengths needed to construct several popular wire antennas. The measurements below are for building a double bazooka near vertical incident skywave nvis antenna.
West mountain radio double bazooka nvis antenna calculator. Enjoy this collection of some of the very best articles from qst, qex, ncj and other arrl publications. Quick swr calculator for vertical and dipole ham radio. Some are based on lookup tables, some completely hide their algorithms. Just type in where it is resonant right now then type in where you would like it to be resonant and the spreadsheet will autocalculate the trimming. Program good for 1 500 mhz, although intended for mf hf useage. Moxon g6xn in his book hf antennas for all locations rsgb publications, great britain 1993. In this menu, you need to submit values of multiple. To determine the length of the line, use this formula. Enter parameters rf exposure calculator vp9kfhintlink. This does not take into consideration the type or size of horizontal reflectors, of even if there is a need for them. The beam antennas covered in this book will provide the reader with a historical perspective, new and ambitious ideas, and computeroptimized designs for allaround best performance. 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.
Antenna impedance an overview sciencedirect topics. 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. Given the wind speed, the total antenna square area, and the boom length, it will return the calculated torque value. Works either in standard and metric units, and let you choose on material, and loopread more. This app does nothing more than the standard 468freq mhz type calculations.
A cubical quad antenna is a four sided, square version of a folded dipole. Antenna calculator and design software electroschematics. All you need to do is enter the desired resonant center frequency in the form below, then click calculate. 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. The algorithm implemented in this calculator is the result of 40 years of experience in the hf antenna sector. This webpage also contains many sample and standard antenna downloads. Unlike the book, this calculator employs the velocity of light. On hf the size and element diameters are usually a drawback. Can be interfaced to hfwin32 propagation prediction software. Erp calculator plus erp calculator is an amateur radio software utility designed to perform a sidebyside comparison of two ham radio antenna systems.
Hf dipole antenna freeware free download hf dipole antenna. It does not calculate inductance, impedance, or even q factor. Yagi calculator this is where you input the center frequency in megahertz. This beam is a 2elementyagi with radiator and reflector and reduced size to about 75% of a normal beam. 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. Hf kits opts for antenna litz consisting of a combination of a good conductor and a strong material that can easily handle the pulling force. Download hf dipole calculator 12 wave wire dipole antenna. Using this software, you can design and build your own yagi antenna. Antenna calculator and design software high frequency scribd. The slim jim, designed by the late fred judd, g2bcx, can be a great portable roll up antenna, if made out of 300. Works either in standard and metric units, and let you choose on material, and loop shape, as circular, square or octagon. It is inversely proportional to the frequency which means the wave with higher frequency will have shorter wavelength.
Erp calculator comes preprogrammed with data files including published data for several popular brands and types of coax cable as well as several popular antenna system brands and models. In other chapters i told that gain, bandwith, fb etc. It is quite possible, that other calculators deliver slightly different results. Generally people dont think of radiofrequency radiation in terms of discrete. Hf dipole antenna this antenna software will help you design a simple wire dipole antennas for 1 30 mhz. We have been looking for a reliable local party that can produce the antenna litz according to our specifications. An inefficient antenna produces a smallamplitude em wave for the same feed power, and converts most of the power into heat. The exact length of the cable is important as its a matching q section. Adding inductors to your dipole makes it possible to reduce the overall. The formula for calculating the approximate length of a dipole is. It may overestimate the actual field strength of highgain antennas in the near field. The antenna is designed to be fed with 50 or 75 ohm coax cable of most any length with a balun. In this case, the antenna impedance looks like a parallel rlc resonant circuit. Yagi calculator is a free antenna design and analysis software for windows.
Dipole antenna length calculator dipoles antennas are easy to build and can be very effective when placed half a wavelenth or more above ground. English hf antennas blog document library about me. This is not always possible in all situations due to the space available. Enter the desired operating frequency in megahertz to get a good starting length for a dipole in both feet and meters. The frequency, f r, for which the impedance magnitude is maximum, or equivalently the reactance is zero, is often. The distance between one point to another adjacent point in a wave is known as the wavelength. On vhf you can easily design a single feed 2 and 6 meter antenna. The measurements below are for building a simple dipole. The 2elementyagi with reflector has normally a 0,2lambdaboom and an impedance of 50 w. A useful microwave antenna calculator the antenna calculator is a very simple and easy piece of software.
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