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. Most wire beams may be rotated with a tv antenna rotor or very small hfclass rotor. The following program will calculate the lengths needed to construct several popular wire antennas. The results are conveniently displayed in inches, centimeters, feet and meters. Using thhn wire may have a higher resonant frequency, adding 1% to the lenghts when using thhn wire should work well. It should be high on your list of options if you want a design that can be multibanded, exhibits useful gain and directivity, is very lightweight, has a small turning radius, and which lends itself readily to do it yourself construction. The gain is always less than a yagi with equivalent numbers but other factors still make it the better choice in my opinion. This is a world wide web front end for a public domain program written by w4vp9kf using php. All you need to do is enter the desired resonant center frequency in the form below, then click calculate. The cost of the material is less than what the rotor cost to turn my 3 element steppir. This program has been derived from a public domain basic program written by. 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. Yagi antenna calculator wire antennas uk hf antennas.
I came across a great writeup by sam moore, nx5z, in the march 2011 qst, titled a four wire steerable v beam for 10 through 40 meters. The antenna is designed to be fed with 50 or 75 ohm coax cable of most any length with a balun. The formula and basics of yagi antenna calculator are also explained with example. 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. Magnetic loop antenna calculator spreadsheet excel spreadsheet that. Even when the wind load is the same or similar, most wire beam designs exert less torque on the mast and rotor under high wind conditions. Hf dipole antenna this antenna software will help you design a simple wire dipole antennas for 1 30 mhz. Some are based on lookup tables, some completely hide their algorithms. A simple 7 element yagi calculator updated pop a javascript to calculate the dimensions for a seven. I had a great idea that a full 5 element 20 meter beam in a fixed direction might reach europe. Antenna calculator and design software electroschematics. Until i got interested in the hex wire beam i thought that homebrewing beams was pretty much dead. The calculators for other antenna types such as parabolic,horn,dipole and patch are also mentioned.
John simpson, kg4zow download source code for this program moxon algorithm and diagram are from awg conversion algorithm from. The moxonbeam has a 0,18lambdaboom and still 50 ohm. 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. This program has been derived from a public domain basic program written by l. The 2elementyagi with reflector has normally a 0,2lambdaboom and an impedance of 50 w. But, with the work done by steve g3txq and leo k4kio this antenna can be built by pretty much anyone. If you decide you really need a yagi with more elements, here are the lengths of them. If you have no particular preference within a given ham radio band, then simply enter its center frequency i.
Moxon beam antenna calculator november 14, 2018 by arfan leave a comment a pact 10m beam moxon beam 144 mhz 2 m band 70cm moxon beam g3xbm qrp site antennas for ultimate lrs it luxembourg moxon beam antenna calculator new images. But if youve never done it, you probably have a few questions. The moxon rectangle is a 2element parasitical beam or unidirectional antenna about 70% the length of a full size 2element yagi of standard driverreflector design. The main category is wire antenans and dipoles, long wires that is about long wire and dipole antenans for ham radio. This antenna was published in the arrl antenna compendium, volume 2 in 1989 pages 5860.
Antenna, ve3sqb ham radio antenna design software programs. Wire antenna calculator amateur radio station ws6x. This up and over, over and down design had been used in hf wire antennas. First, determine the dimensions for the wire elements using the moxgen calculator, this software is available online for download. Prepare the wire elements according to the lengths from the moxgen data results, or you may follow my design. The rectangle, however, far exceeds other 2element beams in fronttoback ratio, while almost equalling them in gain. The main category is antenna design calculators that is about antenna design calculators. This link is listed in our web site directory since monday nov 3 2014, and till today 40 meters wire yagi antenna has been followed for a total of 2327 times. I have constructed a 20 meter wire beam on top of my garage. This is used to input the antenna wire definitions. Maple leaf communications antenna calculator 3element. This webpage also contains many sample and standard antenna downloads for. Otherwise, it would be very difficult to design a yagi or loop antennas if all of the. The cubical quad antenna calculator for citizens band cb radio and amateur radio communications to calculate the spacing between the reflector and driven elements and directors.
Performance of this antenna is very close to that of a classical monoband yagi. 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. It does not calculate inductance, impedance, or even q factor values since it is assumed that. The dl6wu yagi is highly regarded as being easy to build with repeatable results, broad bandwidth and a. Stay here to learn how to design a 3 element yagi for whatever frequency or wavelength you want. About wire antenna calculator the resource is currently listed in in a single category. Page 1 model hf5b butternut presents the model hf5b butterfly compact beam antenna for the 10, 12, 15, 17, and 20 meter amateur bands.
The skyhopper was named after the first one was compared to a grasshopper. 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. During the computer modelling and experimental work i carried out to develop the broadband hexbeam described elsewhere on this web site, it became evident that this antenna is just one of a large family of antennas which share a common structure and which can be multibanded using construction techniques similar to those commonly used with the. Quad antenna javascript calculator for cb and amateur.
This the chicken wire wonder a unique broadband vertical antenna for the hf bands. This formula to obtain the length of a halfwave dipole antenna will give a good ballpark value to start with. Using the n3dno antenna calculator we arrive at the following dimensions for the design frequency of 26. John simpson, kg4zow download source code for this program. The distance between one point to another adjacent point in a wave is known as the wavelength. This calculator will help you to calculate the different wavelength of. Enter the desired frequency then click on calculate and the optimum values for that combination will be displayed in feet, inches and fractions of inches, and in meters. Wire antennas for the beginner every ham knows how to make and install wire antennas. By using 4 fiberglass arms spreaders and wire elements, dick was able to design a wire beam that was both robust and functional. Yagi calculator wc7i antenna info plus swr explained.
Long yagi are commonly used from the 144mhz amateur band to the 2. Since then i have to make use of different kinds of small beam antennas until i. Gain vs spacing the gain of an antenna with parasitic elements varies with the spacing and tuning of the elements, and thus for any given spacing there is a tuning condition that will give maximum gain this spacing. This antenna was published in the arrl antenna compendium, volume 2 in. The program is based on an algorithm developed by l. Download moxon rectangle generator generate and print models for 50ohm moxon rectangle antennas after customizing output settings provided by this portable utility.
This link is listed in our web site directory since thursday nov 16 2017, and till today wire antenna calculator has been followed for a total of 1150 times. Download the ground planedipoleinverted v calculator by n2imf. Yagi calculator this is where you input the center frequency in megahertz. Moxgen will show you the dimensions and optionally generate an antenna model file for a 50 ohm moxon rectangle antenna, given the design frequency and wire size. Ver2calwireantenna actuallyaver2callyorientated resonate12wavedipolewith theearthbeingthe return half duetopoorground conduc2vitya. Wire beams have significantly less wind load than that of an aluminum beam with similar performance. The measurements below are for building a simple dipole antenna. It is quite possible, that other calculators deliver slightly different results. As with all beam antennas, performance characteristics of a yagi antenna are fronttoback ratio fb, a. The correct lengths for the various models will be displayed in the chart. The antenna calculator above uses this formula as a starting point to calculate wire lengths for the dipole. Design your vhf yagi antenna online, a javascript enhanced web page that. The antenna acts like a stacked pair on the vertical and a standard yagi on horizontal.
Here is a simple antenna calculator for two popular forms of ham radio hf wire antennas. The antenna is basically a quad opened up on the bottom. It is inversely proportional to the frequency which means the wave with higher frequency will have shorter wavelength. Kl7jrkl7usik7ice this is an experimental antenna project feedback appreciated. Yagi calculator is a program build to produces dimensions for a dl6wu style long yagi antenna. This beam is a 2elementyagi with radiator and reflector and reduced size to about 75% of a normal beam. Free online engineering calculator to find the dimensions of a yagi uda antenna for a given frequency range and length. Antenna calculator calculate your dipole, 3 element yagi etc find the length of a dipole.
For an overview of this antenna see the cebik article the moxon rectangle. That antenna requires a great deal more real estate than i have available, but i figured if i could get something pointed to europe, id be doing just fine. 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. Driven element 8 feet and 10 14 inches per side 17. Moxon g6xn in his book hf antennas for all locations rsgb publications, great britain 1993. Enter the desired frequency then click on calculate and the optimum values for that combination will be displayed in feet, inches and fractions of. The chicken wire wonder a unique broadband vertical. This page covers 3 element yagi antenna calculator.
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