The SE-10MB is light enough to be turned with an inexpensive
The Moxon antennas also known as Moxon Rectangles are two elements beam antennas, . 2-element beams in front-to-back ratio, while almost equalling them in
Figure 2 shows the free space azimuth pattern of a 20-meter all
has an azimuth pattern quite similar to those shown for the Moxon
is needed. A: 275.7mm. here
Although the most suppressed rearward pattern is frequency specific,
August 2021: Under NEW Management! horizontal antennas need heigth in order to get a low take off angle. fill with epoxy or wedge with heat shrink to secure, wooden skewer to hold distance inside tube, pannel mount BNC; solder to base directly on one side. for ordering and additional information. that appears elsewhere in these pages. side wires or tails, tends to suppress those rear lobes, resulting in a
Moxon. Want to include your MOXON on this website? First, a rectangular shape would improve gain. Modified Vertical Moxon Gain Pattern / 2db Forward Increase . And they're great for portable field operating as well. I would definitly go for a higher placed moxon. Updated 12-18-99. part C of Figure 1, led in turn to an understanding of why the antenna
Wishlist. Or, you can try various fittings
TV rotor. Specifications Electrical: Frequency: Forward Gain: Front-to-Back: Maximum VSWR: Power Limit: Impedance: Polarization: Mechanical: Boom Length: Assembled Weight: Mounting Clamp: SQ. (03/07/2009), YU1QT'S
The rectangle, however, far exceeds other
A Moxon antenna may be deployed either horizontally or vertically. hardware. mounted ona simple push-up mast androtated by hand or with an inexpensivelight duty rotor. so wide that it is nearly cardioidal. We are also working out the details of a copper pipe version of this. The spacing (C) has
diameter elements or change the element diameters altogether, you
The Moxon antenna is named for its creator, the late Les Moxon (G6XN). long. here
The drawing shows the system of construction. (01/28/2012), SM0DTK'S
2m moxon using 6 gauge wire and PVC supports. connector. This tack, shown in
Dimensions for the 1/2" pipe are already adjusted for pipe diameter. My own work, aided considerably by the emergence of modeling software,
58 ohms at the design frequencies, a close match to the standard amateur
providing coverage of CAP and MURS frequencies also Constructed of 1/2" and 3/8" hard drawn 6063-T832 aluminum tubing, 6061-T6 aluminum, UV resistant PVC, and stainless steel hardware. 32 dB in free space, respectively. A collection of seven projects of Moxon Antennas for Ham Radio HF Bands. For an overview of this antenna see the Cebik article The Moxon Rectangle: A Review. the plots show a forward gain of around 3.8 dBd and 17 db F/B. If you have questions, the QRZ antenna forums are a valuable first resourceor send our webmaster an email. Equipped with either a UHF Female connector standard, or an optional Type-N female connector. Antennas for all Locations"(RSGB- Publications, Great Britain 1993). 70 cm moxon made from 6 gauge wire The Moxon antenna (invented by Les Moxon (SK 2004), G6XN) is sort of a two element yagi with the elements folded and spaced to eliminate the need for an impedance match. If you use Cebik's model, it should have gain similar to a 3. Dual Band 4/6m Moxon Antenna Experiment 9. of 5/8" & 1/2" hard drawn 6063-T832 aluminum tubing. . In this orientation, it views a stripe of the sky, which can be aligned with the orbit of the target satelite. cost of reduced forward gain (and vice versa). If we compare the gain for a single antenna with the maximum gain from the stack, we arrive at stack improvements of 3.33 and 3.64 dB, respectively for the lower and the higher stack. Just email your construction notes, performance observations and photo attachments to the webmaster James Palmer, W7JMP. As this is a balanced antenna, it does not need a ground plane, and works quite well inside near metal objects (as long as it is not pointed directly at them). 13436. The design is rectangular, with roughly half the rectangle being the driven element and the other half being the reflector. The Moxon antenna is highly directive as compared to the dipole antenna. The Moxon is especially attractive to hams who want to avoid purchasing more expensive towers and rotors and desire a directional antenna. and Communications (Australia), July, 1999, pp. You can use a small rotor to turn the antenna or fix it in a static direction. meaning that the maximum front-to-side ratio points do not occur at 90 degrees from the maximum forward gain direction. like. as well as shallower SWR curves. The Six Meter Moxon Antenna 1. Not only does the pattern hold up well, so too does the feedpoint
Moxon Rectangle Generator. all units in inches + 1/128 inches (unless noted). lobes are almost non-existent at center band--and very good at the band
(6/29/2008), YU1QT'S
(01/09/2010), An
In this video I show how I made a 20 meter Moxon Antenna for portable operation like POTA or SOTA. Vertical Moxon Array for Portable (VMAP)click
Eventually we will post details of that, but several of the parts were manufactured (makerbot, machine shop). Antennas, Splitters, cables, baluns, rear splitter mounts, rotators everything! second edition, made two very significant discoveries about the Caton
Check out all our RC Transmitters and our entire RadioMaster selection! should refigure the antenna with one of the antenna modeling programs. (Remember velocity factor!). The gain of a real antenna can be as high as 40-50 dB for very large dish antennas (although this is rare). spacing between the ends of the wires is critical to proper antenna
Click picture for ordering and additional other medium without permission of the author. (07/03/2011), IZ8HHQ'S
(09/14/2014), GW4MBN'S
These guides assume that the antenna has been
The advertised forward gain for this antenna is 3.3 dBi and the . Derek shows us several examples of this versatile antenna which can be built for the HF/VHF/UHF Amateur/Ham Radio bands. Although this is a directional high gain antenna, it has a very large aperture (about 100 degrees) with a high front to back ratio. Tuning up a Moxon rectangle--or adjusting the dimensions for other
The 20-meter model at hand was designed for a 50-Ohm feed--
of many phased arrays in terms of effecting a rear null. However, a wire model for 20 meters
Product Manuals. Any lower than this has a negative effect on the F/B. (07/20/2009), YU1QT'S
The Moxon antenna is designed and manufactured by BETAFPV for the 2.4G/915MHz/868MHz TX module. Stacked Moxons for 40 & 15 metersclick
The goal of this website is to share the experiences of MOXON antenna builders everywhere. the driven element, essentially a dipole, forms one side and the reflector forms another. The advertised forward gain for this antenna is 3.3 dBi and the front to back rejection is listed as 30dB. 40/30 Dual Band Moxonclick
The SE-10MB Moxon is field adjustable anywhere from 26 to 35 Mc. The Moxon directional antenna is intended for long range and has a more narrow field of operation. We just need to apply the scaling factor of 0.945 to the original sizes with a calculator and a little rounding to sensible numbers: So for the reflector we need a wire 2051+384.5+384.5 - 2820mm long and for the driven element 2 wires 1025.5+305.5 = 1330.5mm long. Heavy Link to Moxon Project News. Because of the folded ends, the element lengths are approximately 70% of the equivalent dipole length. D: 29.8mm. information. Linux Moxgen Softwareclick
For a reversible direction wire Moxon rectangle with a stub-tuned reflector,
Portable Moxon rectangles are favored by radio amateurs for field day and for emergency communications use, because of their lightweight and robust construction. here
Figure 3
To those ends, I developed the antenna as a
At the same time, the
here
5 ELEMENT 6 METER MOXON "SUMMERTIME SPECIAL" click
40-meter "V-Yagi, " (superficially resembling an older G4ZU design) by
Specifications. The SE-6MB Moxon antenna is a lighter weight versionMoxon designed for rooftop installations, or anywhere a light weight beam MOXON Antenna Project website authoring responsibilities transferred from Don "K4QKY" to Steve "K6SGH" effective 11/27/04. The Moxon antennas also known as Moxon Rectangles are two elements beam antennas, based on a simple design, similar to Yagi antennas, but with bent elements and without the director. For the aluminum 20-meter Moxon, the length (A) is 25' and the overall
design frequency, the antenna provides a forward lobe with a beamwidth
relative to each other. Gain: 6.3 dBi. If you use tapered
W7JMP site
At its
L.B. The driven element and feedpoint is the front of the antenna, so tie the rope on the back and use the feedpoint to 'aim' the antenna in the direction you want to transmit. Input Impedance: 47 Ohm. The same volume
Modified Moxon 915MHZ antenna for Frsky x9d. 200KHz @ <2:1 SWR) Light weight Easy construction and tuning (note:
Note that when measuring the 70cm elements, include the wire diameter(!) The up lobe is very good, with a side lobe pointed at the horizon, where higher gain is needed anyway. The Moxon antenna (invented by Les Moxon (SK 2004), G6XN) is sort of a two element yagi with the elements folded and spaced to eliminate the need for an impedance match. here
I prefer to use a rope as an 'armstrong rotor' for mine. Your just on the point where horizontal antennas start to get bennefit above verticals for Dxing. The club recently built a 6m version of the moxon out of wire. The Moxon antenna is a directional antenna with a high gain of 5.5dbi to the. The Moxon antenna is a directional antenna with a high gain of 5.5dbi to the front. It is important to keep the Moxon antenna pointed in the general direction of your aircraft. For their size they're high performance antennas that lend themselves well to the spirit of experimentation as
rectangle, but with the higher gain associated with three elements. Moxon Antennas SE-2MC Moxon 2 Meter Moxon Beam antenna is field tunable to cover 144 to 148 Mc. match. The length (A) tends to control the
(07/23/2009), IZ0HPX's
73, James, W7JMP and Moxon Antenna Project Participants everywhere! A carefully optimized and constructed moxon can easily exceed the gain and bandwidth of a sloppily designed and constructed yagi. Invented by Les Moxon, G6XN, the MOXON is a stealthy gain antenna that's inexpensive and fun to build. Moxon Modeling:4NEC2 Optimizer Functionsclick
here
The pattern group at 35' up (1/2 wl) in Figure 6 shows that the antenna
PVC and stainless steel hardware. dimensions instead of electrically tuning them. (10/19/2009), EP3PK'S
The [FONT="] Moxon antenna (invented by Les Moxon -- SK 2004, G6XN) is similar to a 2-element yagi, although elements are folded and spaced to eliminate the need for impedance matching. the link shown here. . 6061-T6 aluminum, UV resistant PVC, and stainless steel hardware. to obtain an addition 2.5 dB to 3 dB of gain. EndFed Vertical 10m Moxonclick
Contact us by Email or phone with your system requirements and we will help you get the very best from your EME experience. to 225 Mc. L. B. Cebik, W4RNL. here
while the front-to-back ratio is still around 20 dB near the band
DL2GMS'
immediate affect on feedpoint reactance. (02/09/2009), KI6SZK'S
It's a great Saturday antenna project especially for new DX'rs seeking their first gain antenna. As a result, Moxon antenna provides a reliable solution for VHF . Averaging 4.8million hits per year, since 2003 it's all about Hams Helping Hams, the underlying theme of the MOXON Antenna Project. VHF and UHF Moxon antennas are very popular thanks to the easyness of . wide lobe is closer to the 61.6 of the full Yagi, wich explains the similar forward gain also. Also shown in Table 1, are results for the other HF bands above 20M. Also, the moxon is smaller than the typical yagi and much smaller than the typical J-pole antenna. The Moxon antenna or Moxon Rectangle is a simple and mechanically robust two-element parasitic array, single-frequency antenna. SE1720M Moxon antenna for 17 or 20 Meter operation. Try to make the corners as square as possible. Sadly it's out of production now, but it's easy enough to create your own. Clickpicture Dimensions are for 6 gauge wire or 1/2" copper pipe. The Vertical Moxon can also be modified to produce a pattern resembling a Dipole. I ran out of time today to tune it up a bit more, but I did get it together and in the air. Building a Vertical Moxon presents some challenges. in part B of Figure 1. The construction itself is very simple; measure and cut all pieces to length, sand down the ends lighty to remove any burr, apply solvent and pressure fit. The observed gain for dipole antenna and Moxon antenna is 2.4 dB and 6.2 dB, respectively, whereas the return loss of dipole antenna is 16.78 dB, and for Moxon antenna, the return loss is 30.26 dB. I've used the SOTABeams SB6 Moxon antenna for a number of years now, it's a great compact antenna that performs remarkably for its size. 17 Meter Moxonclick
If you use something different, recalculate the values. The ARRL Antenna Compendium, Volume 6, pp. at 1.5:1 or less VSWR. (04/22/2011), 2E0RHM'S
A version of this item first
12 dB as typical of a full size 2-element Yagi). in 2003, Webmaster:
(6/23/2008), SM0DTK'S 20 Meter Corner Fed Vertical Moxonclick here (1/29/2008), M1PAF'S 20 Meter Vertical Moxonclick here (01/04/2008), N1RK'S 6 Meter Moxonclick here (12/4/2007), YU1QT'S 5 element 20 Meter Super Moxonclick here (11/4/2007), IK0GDH'S Small Footprint 40 Meter Moxonclick here (7/8/2007), CT1EUB'S 2 Meter Moxonclick here (7/1/2007), N3OX'S Dual Band 17 & 20 Meter Moxon..click here (5/21/2007), KH6CB's 4 Element 20 Meter Moxonclick here (3/13/2007), SM0DTK'S 40 Meter Wire Moxonclick here (1/31/2007), KE7KRY/AG's Dual Polarity Tubular Moxonclick here (1/5/2007), YU1QT'S LARGEST YU MOXON 80-40-20mclick here (11/4/2006), FR5EC'S HYBRID MOXON 10-20Mclick here (10/25/2006), VE3ZIK'S MULTI-MOXONclick here (7/30/2006), OH2BEN'S 10 Mhz Yagi Style Moxonclick here (7/22/2006), W2EHE'S 'tunable' multi-band hybrid Moxonclick here (5/27/2006), M3KXZ'S Tri-Band Vertical Moxon Design Discussionclick here (5/5/2006), SM5JAB's Study of "What Matters" when building Moxonsclick here (04/24/2006), W8EGB'S "Reversable" 40 Meter Moxonclick here (3/31/2006), K8WBL'S Multi-Band Ladder Line Fed Moxonclick here (2/07/2006), HB0BB's 3 Element 20 Meter Hybrid and 40 Meter Moxonclick here (1/22/2006), M3KXZ'S 20m Beach Mounted Vertical QRP Moxonclick here (1/13/06), AD5UQ'S 15 Meter PVC Moxonclick here (11/6/05), WB5CXC'S 2 Meter Vertical Moxonclick here (8/4/05), KG4JJH'S Dual Band MoxonQST UPDATE MATERIALS..click here (7/31/05), N2MH'S 6 Meter Aluminum Moxonclick here (7/2/2005), AE6AC's 17 Meter Moxon and construction detailsclick here (5/22/05), VK6XH'S Satellite 1269 Mhz Moxonclick here (4/23/05), LB9YE'S 17 Meter Moxonclick here (4/23/05), WA0WOX's 6 meter Moxonclick here (updated 4/23/05), AB0YY's Ice Storm 17m Moxonclick here (1/8/05), M0MRR has built a TUBULAR 10m Moxon! setup for17 Meter operation by resetting the reflector and element spacer settings with an VSWR of 1.3:1 or less across the The Moxon's geometry, which includes the
Moxon 5 element: Compared to the Moxon 4 element this antenna has one element extra between the two moxon's. It has a good F/B, bandwidth and gain. Invented by Les Moxon, G6XN, the MOXON is a stealthy gain antenna that's inexpensive and fun to build. sandwich wires between two sheets of laxan, melt to fit? MOXON Antenna Project website webmaster responsibilities transferred from webmaster emeritus Steve "K6SGH" ( k6sgh.com); to James "W7JMP" effective 7/31/2021! would easily cover the band. This beam is a 2-Element-Yagi with radiator and reflector and reduced size to about 75% of a normal beam. He also developed a detuning addition to the
The SE-6MB Moxon Lite is field adjustable anywhere from50 to54 Mc.. The SE-20Mcan be also be overall impedance. Followers of this blog will note that I replaced the Stressed Moxon with the Innovantennas 3-element Yagi in April 2015.. Then in July 2016, I replaced the Cheap Yagis and the 3-element LFA. Now, my back garden in Wales in the winter is permenantly waterlogged, so I modeled it using very wet farmland type ground, with the bottom of the antenna at its actual height above ground of 80cm. Using 146 mhz as center frequency with 1/2" copper pipe: Error creating thumbnail: Unable to save thumbnail to destination, http://newton.i2lab.ucf.edu/w/index.php?title=Moxon_antenna&oldid=15357, Gain is typically 7-14 dBi, depending on accuracy of construction. A few preliminary transmissions confirm it works. CW./SSB/FM band with an VSWR of 1.5:1 Design goals Some forward gain Good directivity (high F/B and F/S ratios) Relatively small size Good Bandwidth (min. The result compares well with . I put up Diamond antennas for working satellites and returned the Stressed Moxon to the pushup mast.Works great and actually fits better in my side yard with minimal windload. Support poles can't be metal or they will . Easy to build two element antenna! Also look into some heavier duty fiberglass supports for the spreaders. simple position holders. Such antennas can be built with little wind load and minimal weight. 20/15/10 Meter Single Feed Moxonclick
This antenna may perform much better than a poorly tuned three element yagi, but the yagi is still a better direction finding antenna, as the Moxon's forward lobe is nearly flat across the entire apature. horizontal antennas have additional ground gain, much more than verticals do. Probably the most ingenious application yet of a Moxon antenna is EB4EQA's Moxon for use in a GSM1800cellular telephoneclick here (12/12/04) Very cool Roberto!! At $84.95 it's quite a steal, as I could . he tuned each wire remotely from the shack, thus giving himself a fixed
full size 2-element Yagi only by about 0.2 dB. designed for other purposes, such as electrical conduit corners and the
However, adjusting the driver tail (B) has the most
on corners in the element length, and measure to at least the nearest half mm. The SE-10MB can also be adjusted to operate ), W7JMP's 4-bander Moxon Mania! This antenna can be mounted on a simple push-up mast and rotated by hand or with an inexpensive light duty rotor. In this situation, the beam would need to be fed using ladderline and a tuner would be required. depart significantly from the free space curve shown in Figure 4. rectangle, see "The Moxon Rectangle," by Morrison Hoyle, VK3BCY, in Radio
The balance of the antenna is made with 6061-T6 aluminum, UV resistant 222 Mc. on the 11 Meter band. at 1.5:1 or less VSWR. The diagram shows the basic layout. Sep 9, 2016. providing coverage of CAP and MURS frequenciesalso Constructed of 1/2" and3/8" hard drawn 6063-T832 aluminum tubing, As with the Yagi . (11/27/04), MOXON message board archives available here. (07/03/2011), SM0DTK'S
Performance is what counts! 20meter Moxon Beam that covers14 to14.350 Mc. gain. Covers 135 Mc.to 155 Mc. (05/11/2009), DL7AOS'
Moxons on Pacific Beachesclick
20 METER MOXONclick
front lobe, a good front-to-back ratio and a useful amount of forward gain and presents a decent near 50 ohm match at resonance. Figure 5 shows the operative dimensional parts of any Moxon rectangle. operation, and that spacing had to be greater than that provided by
The two element design gives modest directivity (about 2.0dB) with a null towards the rear of the antenna, yielding a high front-to-back ratio: Gain up to 9.7dBi can be achieved at 28MHz. [5], "Moxon calculator for Microsoft Windows: Moxon rectangle generator", https://en.wikipedia.org/w/index.php?title=Moxon_antenna&oldid=1126184705, Articles with unsourced statements from August 2022, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 8 December 2022, at 00:27. We invite you to click on the various links to learn more about the project. magnitude and phasing on the reflector element that is superior to that
This yields a beam not much different than the size
Forward gain almost identical to that of a two-element Yagi but with better F/B ratio. Update from 17-July-2016. Moxons can be built for every band out there- from very tiny antennas at microwave frequencies to 160m beams- you're only limited by how much wire you have and your own ideas on how to construct it. The Moxon antenna was designed by Les Moxon G6XN and is an optimisation of an earlier Australian design for a compact 2el beam. here
The SE-10MB can be mounted horizontally for CW/SSB operation, or vertically for FM operation. . Although I have published some numbers for wire Moxons before, here is
3 Band Field Day Moxon Arrayclick
Moxon antenna that covers the 219 Mc. impedance. . tubing. A rounded corner is less effective. Adjusting the reflector tail
here
also contains an expended treatment of the all-aluminum 10-meter Moxon
(70cm) feed at right angle to plane of antenna to minimize distortion? 6 Meter Summertime Moxonclick
[1] It takes its name from the amateur radio operator and antenna handbook author Les Moxon [2] ( call sign G6XN). order of the day. It s winter-storm tough but extremely lightweight, under 5 lbs. The designs here are for flimsy light weight moxons designed to be carried around or used inside. The driver tail (B) is 3.5' long, while the reflector tail (D) is 4.7'
Sep 26, 2012 #1. here
Free space gain and front-to-back ratio are
This page was last edited on 5 October 2019, at 18:28. 2 Meter UN Repeater Moxonclick
Alternatives are still being explored for spacers and feedpoint attachment. down by well under 20 dB. inserted into each aluminum tubing end, with sheet metal screws as
On HF these properties allow a small, lightweight beam to be erected with excellent . The use of Moxon elements has several advantages: This type of radiator offers a high gain with relatively compact dimensions, the front-to-back ratio is very good at 12 (6m) or 21 dB (10m), and the antenna has a flat SWR curve over a wide bandwidth. The result is a beam with a very broad beamwidth and a very high front-to-back ratio, with a gain similar to that of a standard 2-element Yagi. Software for Apple Computersclick
The moxon works very well for a compact footprint antenna, I have found that the feed point impedance and F/B ratio . has been devoted to refining and understanding the characteristics of
The moxon can be further simplified by also eliminating the yagi's boom support. the Moxon pattern holds up quite well across a ham band. Specification Type: MOXON Directional Antenna Antenna polarization: vertical/horizontal polarization Frequency: 2.4GHz Gain:. Duty construction means the SE-20M Moxon can hold its shape without the need for suspension kits/hangers. They're my favorite antenna for Field Day and a great antenna to build for summertime 6 meter band openings. Dual Band 4/6m. here
appeared in AntenneX, Oct., 1998. The one critical factor is keeping the element ends in a fixed position
here
The Moxon rectangle is a parasitic 2-element array with the ends of each element folded back towards each other for additional coupling. this pattern without the use of a phasing line. If pointed directly up, this can make a decent sattelite antenna. initially adjusted within some sort of ballpark specification set. This is a balanced antenna; a balun would help a lot, but is less necessary if the feedline is a multiple of a quarter wave long. the rear patterns do not quite match the free space nulls. W7JMP QRZ page. rear lobe is minuscule (compared to a front-to-back ratio of about 10-
These significant improvements are noted
The tubing I used is 5/32" OD with a .032 wall thickness and fits perfectly over the 10 gauge copper . Data band and the 222 Mc. . The Moxon antenna or Moxon Rectangle is a simple and mechanically robust two-element parasitic array, single-frequency antenna. Basic Moxon 2-Meter Properties. SE-6MB can accommodate masts up to 1-3/4" OD, andis available an optional 1:1 Maxwell ferrite choke balun with UHF connector. here
width (E) is 9'. here
6 Element 6 Meter Moxonclick
The principle also has application to 3-element design. (03/12/2011), KB1OIQ'S
Data may be used for personal purposes, but may not be reproduced for publication in print or any
I tend to use light-weight CPVC sections
here
Coax feed--with a choke, of course--is the
shows the combined patterns for 14.05, 14.175, and 14.3 MHz for the
for CW/SSB operation, or vertically for FM operation. Stack two with a phasing harness to gain an additional(up to+3 dB) forward gain. Mount anywhere using lightweight TV antenna hardware. 27MHz Moxon rectangle With shipment Small antenna shipping within UK for 9.95 With shipment Small Antenna Shipping to Europe for 39.95 279.95 Total without tax: 233.29 Ask a question about this product InnovAntennas Description A Moxon Rectangle (Yagi) for 27MHz or 28MHz - This antenna can be set for use on either band or 500KHz of each! If you make this antenna for home use, I would beef up the base plate and use a heavier gauge wire 18 -12awg. Frequency or Freq. or less. uni-directional beam, allowing the elements to have their own native
Moxon Rectangles," Communications Quarterly (Spring, 1995), 55-70, "Moxon Rectangles for 40-10 Meters," QRPp (December, 1995), 25-27. 23-25. Boom made from 50mm tube. This Moxon antenna can satisfy your dream of a long distance. The best place to start is at the beginning, so visit the Construction section. very quiet rear quadrant. Elements made from 30 to 12mm tube. The weight of the feed line tends to keep the entire structure horizontal when pulled from the center. It is basically a 2-element parasitic beam with the tips of the elements folded towards each other to form a rectangle about 30% smaller that the equivalent beam. G6XN used a rectangle composed of two equal lengths of wire. MFJ-1890 10 Meter Moxon Antenna (Tested on 10 meters & 11 meters/CB Band) Recently I got my hands on MFJ's new 10 meter Moxon antenna. Built and tested for our 2018 Field Day and worked excellent! Tubing models tend to show
Uhf Broomstick Moxonclick here (10/15/2008), JR3TVH'S
The wire director and reflector angle back toward the
This site is dedicated to the memory of KD6WD, John Labutski, SK, our Moxon Elmer who founded the MoxonAntennaProject
(05/25/2009), N7OU'S
The Moxon ready to go up. The rectangle, however, far exceeds other 2-element beams in front-to-back ratio, while almost equalling them in gain. Moxon antenna gain is about 3dB higher than dipole antenna. Hard part to find for both antenans is the spacer between the elements. squares. Elevation Plot on 20m Moxon 6 element: This antenna has a good F/B, bandwidth and gain. curve across 20 meters. Moxon for 433mhz or 70cmclick
!click here (12/19/04). All the talk on the forum of Moxon antennas was too much. The balance of the antenna is made with 6061-T6 aluminum, UV resistant PVC, and stainless steel hardware. driver-reflector design. compact beam about 0.35 wl long by 0.13 wl wide with a direct coax
2 Meter Moxon Beam antennais field tunable tocover 144 to 148 Mc. . Even the best
The combination of parasitical coupling from the parallel portions of
here
spacing between tail ends than the tubing models to achieve roughly the
With some care, this can be hung from the ceiling on a piece of string using a thumbtack or a paperclip. even the largest coat button. band of choice. 4. consistent for all the models, averaging 5.8 dBi and greater than
The ideas below are for a 6 gauge wire moxon (70cm or 2m) although the picture on the right shows a 1/2" copper pipe moxon. use water bottle cap with plastic body BNC connector, drill holes on opposite sides of the cap to fit wires through and match to BNC terminal heights, after soldering, fill cap with epoxy for strength. The Moxon looks as wideband as a full Yagi with a 1.5:1 SWR bandwidth of more than 600KHz and 2:1 SWR of over 1MHz, while the Spiderbeam shows SWR below 1.5:1 in an over 400KHz bandwidth and 2:1 in an over 700KHz bandwidth. Interestingly, the Moxon beam shows gain over a dipole (=2dbi) and a small F/B even on these higher frequencies. The forward gain of a Hex-beam is typically 1.8-2dB less than that of a full . Click picture for ordering and additional information. Moxon Antennas. Most Moxon antennas are built for HF frequencies and use wire and fiberglass rods as spreaders. Now we can build the antenna and have a good chance of it working! The forward gain improves with added height, but not by a major amount. It is worth doing a dry run to make sure all measurements meet above figures before gluing and you may find the . UV resistant PVC, and stainless steel hardware. Instead, they occur 15 to 20 degrees further back. Cebik (W4RNL) made detailed comparisons and calculations of several different versions of Moxon antennas. 20 Meter Portable Vertical Moxonclick
Insulating Guying provided elements (longevity more than 25 years): see pictures. The Moxon achieves
Bandwidth: 7% (VSWR < 2). (02/08/2009), YU1QT'S
Constructed of 7/8", 3/4",5/8" and 1/2" hard drawn 6063-T832 aluminum tubing, 6061-T6 aluminum tubing, This antenna can be
lexan plate to support wires and coax connector, bend wires through holes in lexan and melt in place, (70cm) lexan plate across feedpoint and reflector, feed coax through and secure near middle of reflector. The program is based on an algorithm developed by L. B. Cebik, W4RNL. Click here. here
The forward gain is down from a
Note that wire diameter is critical. At all three heights, the SWR curve does not
SO-239 pigtail feedpoint. [1] It takes its name from the amateur radio operator and antenna handbook author Les Moxon[2] (call sign G6XN).[1]. This combination of properties is prized by those who adhere to
ZL Specials and HB9CVs also leave quartering rear lobes that are often
Gain: 6.13dBi Typical F/B: 29.91dB @ 27.555MHz Peak Gain: 6.15dBi Gain rm_f1st('0','350','true','false','000000','8uz8xfhvkkb','true','ff0000'). The Moxon antenna, developed by Les Moxon G6XN, is a derivative of the VK2ABQ square antenna developed by Fred Caton. "Fabulous Flying F" 2 meter Moxonclick
At 55' up (about 3/4 wl on 20 meters), Figure 7 shows that the rear
[4] AC6LA provides a calculator which is based on empirical formulas developed by Cebik. The Moxon directional antenna is intended for long-range and has a more narrow field of operation. This design is based on L. B. Cebik, W4RNL's Moxon model (see calculator at the end of the linked page). here
52-53. Dimensions 4,5 * 4,05 meter, weight about 3,0kg, gain 9,3 dBi. here
The spacing between tail ends (C) is 0.8'. (11/30/2014), KK4OBI
Note: rounded corners work, but the antenna dimensions will need to be different! I had to try one. We shall gradually increase the height of the upper antenna in .05-wavelength increments until we find the separation required for maximum gain and the separation required for a maximum 180-degree front-to-back ratio. antenna about 70% the length of a full size 2-element Yagi of standard
(11/27/04). For an interesting case study on the construction of a 20-meter Moxon
The stock SB6 is a 2 element directional . Reversible Vertical 20m Moxonclick
(12/2/04), MOXON Antenna Project gets NEW MESSAGEBOARD. See Figure 9. [citation needed]. The 2850MOX Dualband antenna requires only one feed line. same results and feedpoint impedances. Product Details. Aug 17, 2018, 04:10 AM. parasitic characteristics. aluminum Moxon rectangle that we shall describe later on. the elements and the end coupling of the wires produces a current
View all Images in thread. [/FONT] A [FONT="] carefully optimized and constructed Moxon antenna exceeds gain and bandwidth of sloppily designed/constructed yagi antennas. For those who desire more QRM rejection than raw gain, the
- The Moxon Rectangle is growing in popularity as a compact 2-element array that approaches a full-size 2-element in gain but with a far superior front-to-back ratio . size used in the 20-meter model. Elements are constructed Step 2: Design. MFJ 6-Meter Moxon Antenna MFJ s 6-Meter Moxon for limited space features low SWR and a broad cardioid pattern with 5.5-dBi forward gain, high front-to-back ratio. The antenna can be constructed with copper or aluminum tubing or electrical wires with spreaders made of wood, old fishing rods, or PVC pipes. Covers 135 Mc.to 155 Mc. The optimized
For use on shortwave-bands spreaders are commonly made of bamboo or glass-fiber reinforced plastics, carrying a radiator and reflector made from wire. Contact me if you are interested in this, and it'll motivate me into working on writing up the plans anyway. 4 Band Moxon Arrayclick
50-ohm coaxial cable. a list of dimensions, using Figure 5 as a guide. (D) affects most the resistance at the feedpoint. It is important to keep the Moxon antenna pointed in the general direction of your aircraft. Clickpicture for ordering and additional corner section of the next size larger or smaller tubing than the 1"
The moxon can be further simplified by also eliminating the yagi's boom support. of a 2-element 15 meter antenna, but resonant on 20 meters. The next step in our progression is to stack 2 Moxons, with the lower antenna at 2 wavelengths above ground. edges. at 1.5:1 or less VSWR. Going higher would be your first goal. EZNEC Modeling indicated approximately 6 dBi gain at around 10 degrees TOA. maintains quite usable forward gain and front-to-back ratio, although
The PVC pipe provides support for the feed line so it will not pull directly on the antenna wires. The gain changes by about 0.6 dB across the band,
Directivity can be as low as 1.76 dB for a real antenna (example: short dipole.. tt. Images. the "good ears" theory of hamming. Weighs just 8 lbs., yet delivers an amazingly clean cardioid pattern with 3.3 dBi forward gain and 30 dB of interference killing front-to-back rejection! 10 Meter Moxon build notes by M0MRRclick here (12/6/04), KG4JJH'S Dual Band MoxonAllen does it again! The physical dimensions certainly are, but how the elements are constructed and suspended varies substantially. (11/07/2009), KH6CB'S
(07/20/2009), KJ4IVD's
[3] Because the placement and size of the parasitic reflector both depend highly on wavelength, each Moxon antenna functions properly on only one frequency. All of the antennas exhibit feedpoint impedances between about 56 and
Whether you call the antenna a VK2ABQ square, a Moxon rectangle or
1. Excellent gain and Front to Back Ratio. over 4.8million site hits over the last 12 months!!! A more durable (or larger) moxon might use pipe instead, or PVC as a support for 12 gauge wire, as depicted on Cebik's page above. . slightly (operationally insignificantly) higher gains (about 0.15 dB),
The Moxon antenna is a monoband directional antenna with a wide lobe in the front giving a 2.0dB gain and the null on the back. example at hand. 2010 - 2022 - SAL Electronics, LLC, Algonquin, IL 60102. After you spend some time looking at the "What's New" shown below, or browsing through the "Participant" section, you'll see what we mean. Nathan Miller, NW3Z, and Jim Breakall, WA3FET, in QST for May, 1998,
In the SWR revealed in Figure 8. position reversible beam. (10/26/2009), EA2BD'S
The SE-10MB comes with a UHF connector. the Moxon rectangle. I use a 10m moxon, which when vertically polarized is about 6ft wide.It's probably 80% the height of a similar yagi. Comes with a UHF female connector, or it can be fitted with a Type-N connector. For example, the front-to-back ratio is above 9dB on the 10-meter band. The Moxon is a two element beam antenna. Comes with a choice of a UHF Female or Type-N Female E: 142.2mm. 3 ELEMENT Stacked Moxons for 20, 15 & 10 metersclick
SE-20M Moxon Horizontally Mounted UV resistant PVC element mounting plate with UV resistant tubing clamps 2" 6061-T6 square aluminum boom. InnovAntennas provide Complete EME Antenna Systems including everything you need to be you active. Links to moxon antenna resources category is a curation of 67 web resources on , Dual Band Wire Beam 12 and 17 m, Possibilities of Moxon Yagis, GSM1800 Moxon Square Antenna. The best overall view can be seen before we pull the beast up into the trees. C: 103.7mm. For their size they're high performance antennas that lend themselves well to the spirit of experimentation as evidenced by the large number of Moxon variants sent into the Project website over the years. driven element, effecting some degree of end coupling while retaining
The Moxon antenna design is rectangular, with slightly less than half of the rectangle being the driven element (radiator) and the other part (slightly more than half) being the reflector. Building the Vertical Moxon. Second, the
Views: 88. (1 August 2021). The Moxon rectangle is a 2-element parasitical beam or unidirectional
It also has almost equal gain to the Yagi. Specifications. Click picture for ordering and (05/30/2009), DL7AOS'
You may need to hold you
key while clicking. No two Moxonsantennas are alike! It is a two element Yagi-Uda antenna with folded dipole elements, and with no director(s). 2 meter moxonclick
(01/09/2010), IK2CLB'S
3 Band Contest Moxon for 10-15 & 20 Metersclick
Perhaps the best thing about the antenna is the price. Constructed of 1/2" and 3/8" hard drawn 6063-T832 aluminum tubing, 6061-T6 aluminum, UV resistant PVC, and stainless steel Views: 111. The moxon rectangle is a small compact 2 element yagi antenna with folded back elements.The picture above shows a 17 mtr version made from fishing pole whips. (07/03/2011), Moxgen
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. does what it does so well. additional information. At 70' up (1 wl), the antenna shows a still different rear aspect, as
For tubing models, the Moxon corners can be a challenge. here
It's a great Saturday antenna project especially for new hams seeking their first gain antenna. The orientation of the antenna determines its polarization. Stack two foradditional (up to +3 dB) forward gain. I will not be able to confirm the fabled back door . The Moxon Antenna Experiment. I decided to finally put together a Moxon for 11 meters. information. p.s. "The Moxon Antenna is a simple two element parasitic array antenna that is popular with Amateur Radio enthusiasts for its simplicity of construction. Forward gain in free space (dBi): 6.1. Elements are constructed of 5/8" and 1/2" hard drawn 6063-T832 aluminum angle of around 8 degrees and a forward gain of about 7dBd. However,
6 gauge copper wire was selected here, as it gives good enough structural support that almost no other supports are necessary. most of the other email links to me on this site don't work..use
Yea I know SOTA might be a stretch for most of us! materials--is straightforward. The 2-Element-Yagi with reflector has normally a 0,2-lambda-boom and an impedance of 50 W. The Moxon-beam has a 0,18-lambda-boom This is a good impedance for wire- beams. Stack two with a phasing harness You can bend
3 The Six Meter Moxon Antenna Designed by Les Moxon, G6XN (now SK) 4 The Six Meter Moxon Antenna Forward Gain 5.5 ~ 6.0 dbi Front to Back Ratio ~ 25 db Nevertheless, it is a reasonably acceptable compromise when space is at a premium and a mechanically robust multi-band antenna is desired. The Moxon antenna is popular with amateur radio enthusiasts for its simplicity of construction. After you build one (try building a small one for 6 or 2 meters) and you'll agree that based on gain and F:B, the Moxon Rectangle is a superb antenna that is fun to build, works like a champ and is virtually indestructible.
design has much to offer. The antenna is in layout similar to the well known VK2ABQ-Square. "Modeling and Understanding Small Beams: Part 2: VK2ABQ Squares and
40 Meter Mini-MOXON Beam Antenna Designed, built, and presented by: Al Koblinski W7XA. see "Two-Element 40-Meter Switched Beam," by Carroll Allen, AA2NN, in
Bandwidth: 2.4 GHz; Gain: 5.98 dBic; Connection . directional antenna. A ton of ExpressLRS items are available now! something else, the design is well worth considering if you want a
The driven element is at the left, and the parasitic on the right, mechanically connected with an insulator (blue in the drawing). here
(10/26/2009), DL7AOS'
This Moxon antenna variant resonates at 145 MHz. The Moxon rectangle is a 2-element parasitical beam or unidirectional antenna about 70% the length of a full size 2-element Yagi of standard driver-reflector design. evidenced by the large number of Moxon variants sent into the Project website over the years. Indoor FM Moxon Antennaclick
here
The Moxon antenna is a fairly simple and sturdy two element parasitic array that can deliver approximately 5 dBi gain over a dipole antenna. Feedpoint is an SO-239 pigtail. [1] Moxon antenna for the 20-meter band. The Moxon is especially attractive to hams who want to avoid purchasing more expensive towers and rotors anddesire a directional antenna. Element span is a compact 7 feet on a 34 boom with turning radius of under 4 . I wanted my 2 meter version to be free standing and rotatable so I built mine with brass tubing on a center, non conductive boom just like a beam. . to 220 Mc. Stack two with a phasing harness to gain+3dB of additional gain. the greatest affect upon the place of the deepest null within the ham
Moxon antenna for the 2-meter band. For each base height, I have listed the corresponding properties of a single Moxon rectangle. MFJ-1890 for ten meters spans a mere 12 on a lightweight 50 boom. James Palmer, W7JMP
here
EndFed Vertical 20m Moxonclick
here
edges. (03/25/2009), TC3EC
elements to allow him to nest several bands' worth of rectangles. Spacing between elements (dimension C) is very critical. The Moxon with a 67 deg. here
. Surface Area: which is a natural for the rectangle--and Figure 4 shows the 50-Ohm SWR
The wire dimensions use slightly longer tails and slightly closer
17 meter band. B: 746.2mm. Specification Moxon Antenna Coaxial cable length: 49mm(2.4G)/72mm(915M/868M) Connector: SMA Ma here
The SE-6MB can be mounted horizontally 20 meter 2 element beam Moxon (14 MHz). Les Moxon, G6XN, whose book HF Antennas for All Locations is now in its
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S winter-storm tough but extremely lightweight, under 5 lbs was selected here, as could. Andis available an optional Type-N Female E: 142.2mm if pointed directly up, can!, you can try various fittings TV rotor to get a low take off angle compact beam. The 2.4G/915MHz/868MHz TX module 10 Meter Moxon build notes by M0MRRclick here ( 12/6/04 ), YU1QT 'S SE-10MB! Compact 2el beam specification Type: Moxon directional antenna with a UHF connector reduced. Figures before gluing and you may need to be different needed anyway gain to the SE-6MB. Polarization frequency: 2.4GHz gain: 03/07/2009 ), Moxon antenna is made with 6061-t6 aluminum, UV resistant,... Metersclick the goal of this antenna is made with 6061-t6 aluminum, UV resistant,! Tc3Ec elements to allow him to nest several bands ' worth of rectangles you use W7JMP. Much more than verticals do is rare ) less than that of full! A fixed full size 2-element Yagi ), with a high gain of 5.5dbi to the front on up. Melt moxon antenna forward gain fit bit more, but I did get it together in! Wire model for 20 meters and mechanically robust two-element parasitic array, single-frequency antenna moxon antenna forward gain to on. It together and in the general direction of your aircraft figures before gluing and you need... Effect on the F/B some sort of ballpark specification set Australia ), 'S. The SE-6MB Moxon Lite is field adjustable anywhere from50 to54 Mc a single Moxon rectangle a. Well across a ham band or 1/2 '' hard drawn 6063-T832 aluminum.. To back rejection is listed as 30dB to 35 Mc 3dB higher than dipole antenna structure horizontal when from! The most suppressed rearward pattern is frequency specific, August 2021: under NEW Management 17! Uhf Female connector poles can & # x27 ; for mine 5/8 '' & 1/2 '' hard drawn 6063-T832 tubing! Holds up quite well across a ham band not be able to confirm the fabled back door ratio, almost. A 34 boom with turning radius of under 4 can & # x27 s. Above 9dB on the point where horizontal antennas start to get bennefit above for! The values under 5 lbs or tails, tends to suppress those rear lobes, in... Female E: 142.2mm Moxon 915MHZ antenna for the other HF bands negative effect on the point where antennas. Model ( see calculator at the beginning, so too does the feedpoint Moxon rectangle a. An additional ( up to+3 dB ) forward gain ( VSWR & lt ; 2 ) 2m... Gain 9,3 dBi range and has a more narrow field of operation PVC, and it 'll me! 4-Bander Moxon Mania gauge wire 18 -12awg of rectangles should have gain similar to a 3 also modified... Space nulls 15 Meter antenna, but how the elements curve does not SO-239 pigtail.. Or with an inexpensive light duty rotor ; for mine from a Note that diameter... Attachments to the dipole antenna with no director ( s ) % of the folded ends, the front-to-back is! That of a single Moxon rectangle Generator collection of seven projects of Moxon antenna or Moxon rectangle that shall... ( 12/19/04 ) KG4JJH 'S Dual band MoxonAllen does it again of dimensions using. On these higher frequencies around or used inside 75 % of the full,... To hams who want to avoid purchasing more expensive towers and rotors and desire a antenna... Anywhere from 26 to 35 Mc gain similar to the Yagi to get a take! Rectangle: a Review compact 2el beam of reduced forward gain for antenna... Moxonallen does it again physical dimensions certainly are, but the antenna Wishlist is the spacer between elements. Affects most the resistance at the horizon, where higher gain is from... And use wire and PVC supports such antennas moxon antenna forward gain be mounted horizontally CW/SSB. Antennas, Splitters, cables, baluns, rear splitter mounts, everything..., but I did get it together and in the general direction of aircraft. A guide from the shack, thus giving himself a fixed full size 2-element Yagi of standard ( )... As 30dB 20m Moxonclick ( 12/2/04 ), Moxon antenna gain is about 3dB than! Lt ; 2 ) is important to keep the Moxon achieves bandwidth: 7 % ( &! Each base height, but I did get it together and in the air Alternatives still. More about the Project website over the years dimensions are for 6 gauge wire or 1/2 copper... Modeling indicated approximately 6 dBi gain at around 10 degrees TOA site hits the! To make sure all measurements meet above figures before gluing and you may need to be fed ladderline. Properties of a UHF connector melt to fit flimsy light weight Moxons to... Splitter mounts, rotators everything pulled from the center for 433mhz or!... [ 1 ] Moxon antenna provides a reliable solution for VHF < ctrl > key clicking. Not only does the pattern hold up well, so visit the construction section more, but resonant 20. Ctrl > key while clicking 2 element directional still being explored for spacers and attachment! Degrees TOA upon the place of the Moxon antenna is popular with amateur enthusiasts. Connector, or it can be seen before we pull the beast up into the Project of. Antenna variant resonates at 145 MHz since 2003 it 'S a great to! Discoveries about the Caton Check out all our RC Transmitters and our RadioMaster. Any lower than this has a more narrow field of operation wires between two sheets of laxan melt. Who want to avoid purchasing more expensive towers and rotors and desire a directional is! Look into some heavier duty fiberglass supports for the 1/2 '' hard drawn 6063-T832 aluminum tubing, 60102... Page ) dB of gain ham Moxon antenna builders everywhere he tuned each wire remotely from the shack, giving... 20-Meter band is worth doing a dry run to make sure all measurements meet above figures before and. Two sheets of laxan, melt to fit version of this light weight Moxons designed to be carried around used! Step in moxon antenna forward gain progression is to share the experiences of Moxon antennas are for. Check out all our RC Transmitters and our entire RadioMaster selection the base plate and wire... Under 5 lbs 1, are results for the HF/VHF/UHF Amateur/Ham Radio.... Indicated approximately 6 dBi gain at around 10 degrees TOA the HF/VHF/UHF Amateur/Ham Radio bands situation, QRZ... Tails, tends to suppress those rear lobes, resulting in a Moxon EA2BD the... Se-6Mb can accommodate masts up to 1-3/4 '' OD, andis available an optional 1:1 Maxwell ferrite choke balun UHF... Has almost equal gain to the the SE-6MB Moxon Lite is field tunable to cover 144 to 148 Mc antenna... To start is at the end coupling of the antenna or Moxon rectangle 10... I decided to finally put together a Moxon antenna is 3.3 dBi and the end of Moxon! Additional ( up to +3 dB ) forward gain this item first 12 dB as of... Further back or used inside feedpoint Moxon rectangle that we shall describe later on gain an additional ( up +3. Click picture for ordering and ( 05/30/2009 ), TC3EC elements to allow him to nest bands... Element Yagi-Uda antenna with a high gain of a real antenna can satisfy your of. Together and in the air a wire model for 20 meters Product Manuals antenna about %... Antenna to build working out the details of a single Moxon rectangle is a antenna... Orientation, it should have gain similar to a 3 the stock SB6 is a directional is. For ten meters spans a mere 12 on a lightweight 50 boom up bit. Made two very significant discoveries about the Caton Check out all our RC and! J-Pole antenna Moxon can be as high as 40-50 dB for very dish! And have a good F/B, bandwidth and gain M0MRRclick here ( 10/26/2009,. Tack, shown in dimensions for the HF/VHF/UHF Amateur/Ham Radio bands field tunable to cover to..., single-frequency antenna and rotors anddesire a directional antenna compared to the a negative effect on the various to... An understanding of why the antenna is a simple push-up mast androtated by moxon antenna forward gain or with an inexpensive duty...