Ive heard a couple of stations recently discussing using a moxon rectangle antenna on 4m, but had to go looking in my books to discover what they were talking about. Professional grease containing 30% aluminum particles, recommended for the assembly of aluminum antenna tubes. Scribd is the worlds largest social reading and publishing site. We often think of the moxon rectangle as strictly an hf antenna. It was written by kg4jjh, who provides detailed drawings of the parts and directions for assembly. Zplots uses excels charting capabilities to plot impedance data obtained from a variety of sources, including the w5big aim4170 antenna analyzer, the n2pk vector network analyzer, and several different antenna modeling programs. John simpson, kg4zow download source code for this program moxon algorithm and diagram are from moxon moxgen. Moxon g6xn in his book hf antennas for all locations rsgb publications, great britain 1993. Eof sub pfoot return john simpson, kg4zow download source code for this program moxon algorithm and diagram are from. A shows the azimuth pattern of a 2meter moxon when the antenna is vertically oriented and, hence. Known as the magic band, the six meter band can be mysterious, unpredictable, and downright fun. The mfj1890 is a lightweight aluminum antenna designed to operate in the 10 meter band and we had hoped that with a little messing around we could get it to tune to the 11 meter cb band. 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. 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.
Moxon rectangle generator is a tiny and portable application that can generate and print models for 50ohm moxon rectangle antennas. Compared to the moxon 4 element this antenna has one element extra between the two moxons. However, its small size and special far field pattern lend themselves to some vhf applications. 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.
A moxon beam can be expected to provide approximately 5. This little project generates a small indoor tv antenna for dvbt uhf reception. 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. The performance was excellent with good gain, great side and back rejection and seemed to work very well. For dozens if not hundreds of examples, pictures, howto articles, and an active message board visit the very popular moxon antenna project website. Designing a moxon beam is very easy with a useful little program by d. Dan maguire, ac6la has made an application the calculates all of the dimensions for any moxon antenna. Moxon rectangle generator is an easy to use moxon antenna designer software for windows.
W1uj 40m moxon over 4el steppir 8p5a moxon project click here pw7t moxon project click here k1kp moxon project click here comparison to the kb1h full sized 40m 3el dallas and w1ujw6nl moxon click here this is k1gu, nedtns moxon setup 4el steppir below. If nothing happens, download github desktop and try again. The antenna itself is based on the moxon design and consists of two lshaped active parts in front and one ushaped reflector part at the back. Sep 14, 2017 my 2m moxon antenna, simple and easy to build. This is a world wide web front end for a public domain program written by w4vp9kf using php. The program is based on an algorithm developed by l. Using it, you can design a moxon rectangle antenna. If your planning on experimenting with moxon antennas theres one essential tool youre going to need. John simpson, kg4zow download source code for this program. The main category is moxon antenna plans that is about links to moxon antenna resources. Oct 22, 2017 the 6m moxon turned out a bit too flimsy, so i will remake it in part two, along with two 2m antennas built from the 10mm tubing left from the first 6m moxon. Antenna modeling software and other utility programs by dan maguire, ac6la. A compact 2 element beam for 10m, ei9gq i used two bamboo rods joined together with vinyl tape.
Building the 6 meter moxon antenna kb9vbr jpole antennas. 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. Jan 06, 2015 stumbled across a good moxon antenna calculator this morning which was created by paul evans w4vp9kf. This antenna has a very good fb and bandwidth works from 27. Apr 08, 2015 download moxon rectangle generator generate and print models for 50ohm moxon rectangle antennas after customizing output settings provided by this portable utility. It has two cylinders made from aluminum flashing 30 12 long, wrapped around 2 2. Tiny terrestrial tv antenna pulls in overthehill stations. The author isa keen enthusiast of the moxon rectangle antenna, invented by the late les moxon, g6xn. Postings on mailing lists show that very few of us have used calculated wire lengths and been happy with them directly. This is a twoelement beam offering about 3dbd gain and massive 30db front to back. Works either in standard and metric units, and let you choose on material, and loop. Although i have written about this design before, questions still pop up regularly. For an overview of this antenna see the cebik article the moxon rectangle.
Nov 23, 2010 15 meter moxon beam in action moxon on top of the 20 foot painter pole extension moxon in the air note the pvc pipe that feeds the driven element with coax fishing poles glued to paint roller extensions, which mount into the moxon center moxon fishing poles and mast, 2. Cebik, w4rnl, developed an algorithm for calculating the dimensions of a moxon rectangle antenna. From 2010 to 2014 i used a 15 meter twoelement moxon beam as a temporary antenna for contests. Design and build a 6 meter 2element moxon antenna mostly from available aluminum tubing and angle stock. When it comes to the moxon, this antenna is no exception. I built it from plans in the may 2003 issue of qst magazine. Some years ago i built a moxon rectangle antenna for 6 meters. 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. The driven element is at the left, and the parasitic on the right, mechanically connected with an insulator blue in the drawing. First, determine the dimensions for the wire elements using the moxgen calculator, this software is available online for download. Moxon uhf tv antenna for dvbt fully parametrized by. The moxon antenna is popular with amateur radio enthusiasts for its simplicity of construction. The antenna is in layout similar to the well known vk2abqsquare.
Moving to the moxon design also saved me quite a bit of space. Several other of his articles appeared during the 1970s and 1980s in ham radio magazine. This is a doublesided world map showing the cq dx zones and the itu. This beam is a 2elementyagi with radiator and reflector and reduced size to about 75% of a normal beam. Cebik, w4rnl the moxon rectangle is a fascinating antenna on several scores.
So i build the thing to the measurements, take it out to the back yard and get it up and the swr is 7. The antenna performs quite well on the 2 meter band, even though it was designed exclusively for the lower 3 murs channels. This is a picture of my eh star antenna for 80 meters. He asked me to write this small program incorporating his work and i was happy to oblige. Vk2abq may have been the first to publish a design with his square antenna. I made one a year ago out of thin ally tubing and it worked as described. Moxon antenna generator from dan maguire, ac6la cand is based on an algorithm developed by l. This link is listed in our web site directory since tuesday jan 6 2015, and till today moxon antenna calculator has been followed for a total of 2345 times. The pvc items are readily available from the local hardware store and are very inexpensive. Ac6la provides a calculator which is developed from former algorithms of l.
The moxon beam by dk7zb, moxon yagi, moxon antenna. However, its small size and special far field pattern lend themselves to. Use this application to generate an antenna model based on your input. The international amateur radio union iaru has welcomed the st. About moxon antenna calculator the resource is currently listed in in 2 categories. Download moxon rectangle generator generate and print models for 50ohm moxon rectangle antennas after customizing output settings provided by this portable utility. 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. Prevents binding, corrosion and the formation of aluminum oxide, and allows easy dismantling of antennas after several. A commandline calculator for moxon antennas, written in java. As the late spring and summer months heat up, six meters comes alive. This program has been derived from a public domain basic program written by l.
The moxon elements are just under 50 long while each of the 4 t elements are about 20. Les moxon, g6xn sk moxon authored a july 1952 qst article, twoelement driven arrays. The moxon antenna was designed by les moxon g6xn and is an optimisation of an earlier australian design for a compact 2el beam. Moxon rectangle generator will show you the dimensions and optionally generate an antenna model file for a 50 ohm moxon rectangle. Download and install the best free apps for calculators on windows, mac, ios, and android from cnet, your trusted source for the top software picks.
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. I turns out that its an ingenious compact 2element beam, originally designed for the hf bands, but easily applicable to vhf too. Im building the antenna from 716ths inch and 38ths inch tubing. The 6m moxon turned out a bit too flimsy, so i will remake it in part two, along with two 2m antennas built from the 10mm tubing left from the first 6m moxon. Jun 07, 2012 so, as a conclusion, i wish the antenna to be adjustable in some way to achieve its best. The moxon antenna or moxon rectangle is a simple and mechanically robust twoelement. The moxon is suspended above the horizontal 1x2 board although it looks as though it is sitting on it. Building the 6 meter moxon antenna kb9vbr j pole antennas. There is even a pcbased calculator that you can download. Moxon background several designs emerged in the 1970s for reduced size beam antennas implemented by folding the elements. I recently replaced it with a commercial supermoxon to get a bit more gain with not much increase in size.
Dimensions 4,5 4,05 meter, weight about 3,0kg, gain 9,3 dbi. Antenna design calculator is the next free antenna design and analysis software in this list. Essentially it consists of two metal or wire elements. I started this project after building my first mono band moxon for 15 mtr band. I used the moxgen program to get the measurements of the antenna. I then ran it through eznec to make sure it was correct. Stumbled across a good moxon antenna calculator this morning which was created by paul evans w4vp9kf. You never quite know when the band will open and where it will take you.
Below the cylinders are two coils for matching and developing the eh field. This program has been derived from a public domain basic program written by. A simple fixed antenna for vhfuhf satellite work explore the lowearth orbiting amateur satellites with this effective antenna system. I came across an interesting and useful free little program, to calculate the relevant dimensions, for a directional rectangular antenna. On 20180528, iaru members completed voting on the proposed admission of sknaars to the iaru to represent st. This is a doublesided world map showing the cq dx zones and the itu zones. Speedometers, thermometers, swr meters, and smith charts.
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