Since that time, we have worked on a variety of products, for both the consumer and professional markets. Of course you cant easily add elements to a moxon yagi unless you add considerable length to the boom as extra elements cant be added between a. The moxon antenna design the moxon antenna was designed by les moxon g6xn and is an optimisation of an earlier australian design for a compact 2el beam. Using it, you can design a moxon rectangle antenna.
The following schematic shows the moxons geometry and radiation pattern. John simpson, kg4zow download source code for this program moxon algorithm and diagram are from awg conversion algorithm from. The gw3ydx super moxon adding extra directivity to the moxon rectangle for 6m, 4, and 2m photo 1. Ac6la moxgen moxgen will show you the dimensions and generate an antenna model file for a 50 ohm moxon rectangle antenna, given the design frequency and wire size.
He asked me to write this small program incorporating his. The moxon generator design program configures a file for direct import into antenna modeling software. The two element design gives modest directivity about 20 db with a null towards the rear of the antenna, yielding high realized front to back ratio. This type of antenna mainly contains two connected passive elements that give this antenna a rectangular look. Cebiks website, to identify all the critical measurements. This is a world wide web front end for a public domain program written by w4vp9kf using php. In most cases, tradition sets the form of these formulas in the following terms. Jul 02, 2015 this is antenna modeling software that uses excel for an interface and standard nec 2 equations. Moxon rectangle generator is an easy to use moxon antenna designer software for windows. The back rectangle was the reflector and the driven element.
Essentially it consists of two metal or wire elements. The moxon rectangle comprises of 2 elements, a driven element and a reflector element. Print program to calculate the dimensions of a moxon rectangle. A 6 meter moxon antenna discover 6 meters for the first time or enhance your existing operation with a rugged but portable version of this novel 2 element antenna. Aug 15, 20 diy build and simulation of the moxon antenna with 4nec2 software. Although many variants of 2element yagi have been created by countless amateurs by symmetrically bending the elements near the far ends of the elements at various angles and directions, the moxon design somehow became more popular than the others.
This note looks at the antenna and antenna model for the 40 meter moxon yagi designed by dave leeson, w6nl. Satsat, by fabrice aneche is a satellite tracking software, for radio amateurs, scientists or hobbyi. The moxon rectangle was first introduced by les moxon, g6xn during the 1950s. A moxon rectangle antenna for 4m by ross g6gvi vertical moxon for 14 mhz a vertical moxon with different feeding for the 20 meters 4030 moxon a moxon antenna project for 40 and 30 meters ac6la moxgen moxgen will show you the dimensions and generate an antenna model file for a 50 ohm moxon rectangle antenna, given the design frequency and wire size. The program is based on an algorithm developed by l. The radiation pattern is shown in the traditional arrl style and was generated from the final design by xnecview. With the proliferation of personal computers and affordable even free software, antenna modeling has become a. Stressed moxon antenna the sm50 is a directional 6m antenna occupying approximately 50% of the space of a 2 element yagi, yet having similar gain and better fb. Cebik, w4rnl sk there is an urge among antenna builders to discover magic formulas for determining the element lengths of various antenna types. This note focuses on the antenna model and the modeled performance. Not a bad choice for long range fpv work on 433mhz.
The design is rectangular, with less than half of the rectangle being the driven element and the other half being the reflector. Looking at the mini moxon design, i see the boom length is around the standard. A companion note will look at some field measurements, and how those compare to modeled results. Kb0ykis radio zone online jpole designer, online yagi designer, the copper cactus double jpole pcaad 2. 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. Designing moxon rectangles by equation and by model l. Use these antenna design software to design and analyze antennas of various types.
Another video on this new antenna from diamond, by viewer request, to see how much difference it makes on simplex with a distant station. The tips of each element are bent towards the other with the gap being filled by an insulator to help support the ends of both elements. Moxon rectangle generator 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. Building the 6 meter moxon antenna kb9vbr antennas. Antenna modeling used to be the domain of scientists and engineers with very expensive antenna ranges covering acres and acres of land strewn with expensive equipment. The design is rectangular, with less than half of the rectangle being the driven element and. For an overview of this antenna see the cebik article the moxon rectangle.
Mininec should not be confused with nec, which is a large antenna analysis program written in fortran and designed to run on mainframe computers. It is popular with amateur radio enthusiasts for its simplicity of construction and great performance. The se6mb moxon lite antenna is a lighter weight version of the se6m designed for rooftop installations, or anywhere a light weight beam is needed. Moxon rectangle generator 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. Cebik, w4rnl, developed an algorithm for calculating the dimensions of a moxon rectangle antenna. The moxon antenna is a simple two element parasitic array antenna.
Moxon rectangle generator is an easy to use moxon antenna designer. Pdf design and development of uhf moxon antenna tukaram. Moxon g6xn in his book hf antennas for all locations rsgb publications, great britain 1993. It is a reduced size antenna with a smaller turning radius. M mana is an antenna analyzing tool based on the moment method introduced in mininec mini numerical electromagnetics code version 3. Its intended to be lightweight and strong enough to be portable. Since then it has been a very popular limited space yagi do to its very compact size. I started this project after building my first mono band moxon for 15 mtr band. 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 rectangle, however, far exceeds other 2element beams in fronttoback ratio, while almost equalling them in gain. In present communication, design and development of such antenna using moxgen open source software is reported. Moxon design was established in 1983 to assist companies engaged in electronic product design. John simpson, kg4zow download source code for this program. We can bring worldclass design practices and methodologies to your hardware and software development teams, with a commitment to integrity. Here we see the software set to design an antenna for 17 meters using 18. This results in a rectangluar shaped antenna with directional properties and very good fb ratio.
Eh antenna calculator calculate eh antenna components dimension with this online from, in french. Eh antenna calculator calculate eh antenna components dimension with this online from, in. The author isa keen enthusiast of the moxon rectangle antenna, invented by the late les moxon, g6xn. The model is for average ground conditions and with an elevation 20 feet. The moxon rectangle is a fascinating antenna on several scores. Cebik, w4rnl sk 50 input enter desired frequency in mhz. Moxgen moxon rectangle generator 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.
Vk2abq may have been the first to publish a design with his square antenna. The stressed design allows the antenna to be light weight yet strong. For this moxon beam or moxbeam project i describe a portable version of my attic antenna that is built from composite lumber, fiberglass tubing. Nov 05, 2019 essentially the moxon antenna is derived from a standard 2element yagi design.
It was quite easy, since this one is a lot smaller. A moxon antenna project made with wires and fiberglass poles. Ham radio portable moxon antenna vhf 145 mhz supports by. Basically, a moxon rectangle is a 50 ohm two element wire beam antenna. First, determine the dimensions for the wire elements using the moxgen calculator. The se6mb moxon lite is field adjustable anywhere from 50 to54 mc the se6mb can be mounted horizontally for cwssb operation, or vertically for fm operation. Available antenna design software eznec and 4nec2 are based upon the numerical electromagnetics code, or nec, which is a popular antenna modelling system for wire and surface antennas originally written in fortran in.
Designing moxon rectangles by equation and by model. Antenna modeling software from dan maguire ac6la multinec, moxon generator, tldetails, etc. 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. The 6 meter moxon is built from 5 8 inch od and 1 2 inch od aluminum tubing with 3 8 inch od solid aluminum for the corners. Stressed moxon antenna par electronics filters for the.
View antenna display, showing the wires making up the model of the fiveelement beam, with currents and 2d slice superimposed to show orientation. The moxon rectangle the moxon rectangle, named after les moxon, g6xn sk, is an interesting and valuable design. Moxon rectangle generator will show you the dimensions and optionally. This beam is a 2elementyagi with radiator and reflector and reduced size to about 75% of a normal beam. We use some simple software designed by dan maguire, ac6la, which was first published on l. The moxon antenna is popular with amateur radio enthusiasts for its simplicity of construction. First, determine the dimensions for the wire elements using the moxgen calculator, this software is available online for download. The following schematic shows the moxon s geometry and radiation pattern. Antenna modeling software and other utility programs. Lower swr was measured at a lower frequency about 1. With the proliferation of personal computers and affordable even free software, antenna modeling has become a popular amateur activity. The antenna is similar to a 2element yagi with the element ends folded toward each other.
Moxon background several designs emerged in the 1970s for reduced size beam antennas implemented by folding the elements. Software beta testing was provided by a group of fellow amateurs. Top 5 workfromhome software to run video conferences. This antenna consists of 2 moxon style rectangles mounted on a boom similar to a yagi antenna. In its initial form, it amounts to a two element parasitic yagi. It describes a 4 element moxon antenna for 6m, 4m and 2m. When transmitting a constant 50 watt into the antenna for.
An excel workbook to aid in the design of a feed system for a typical twoelement phased array. My own work, aided considerably by the emergence of modeling software, has been devoted. The moxon antenna is a relatively simple antenna to build as it consists of just 2 elements, yet has a decent gain of about 6 dbi and a fronttoback approaching 30 dbi or more. Little and easy supports for your vhf moxon antenna prototype.
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