Coax moxon. Therefore, setting up the antenna for operation is simple.

Coax moxon ) for best Aug 30, 2017 · The Moxon is a really great antenna design. The Moxon is especially attractive to hams who want to avoid purchasing more The Moxon rectangle is quite stable with respect to feedpoint characteristics as the antenna is raised and lowered. hamuniverse. Oct 20, 2025 · Before we charge into the build, let's reflect on the Moxon. Cebik, W4RNL I have had numerous requests over the last few years for the dimensions and construction plans for Moxon rectangles designed for the 6-meter band. At least this happens with 50 ohm coax feeds. The outer of athe coax combined with stray capaclty forms a parallel tuned circuit. The Moxon Rectangle: A Review L. I only live 2 miles from the sea and thought it would be fun to operate from the beach at Rottingdean. The little black box (bottom left photo) is the termination point for the feed line and the phasing lines (one 1/4 wave 4 days ago · Site Listings 17 Meter Coaxial Moxon Antenna 17 m reduced size coaxial moxon rectangle an exercise with an MFJ 259B plans by We would like to show you a description here but the site won’t allow us. Sourdis Previous by Date: Re: [TowerTalk] Tailtwister Rotor wires, Bob Next by 3 inches below the connection for driven element on the coax, I installed a Palomar BA-58 1:1 current balun bead set so I wouldn't have to add extra coaxial loss. One director and one John designed and built a Coaxial MOXON which employs RG-58 coax instead of wire for the elements to reduce the physical size of the antenna. This article is not about the original construction of that antenna. 8/27/2003 You may already be aware of this, but if you are adding a 20m Moxon to a 17m Moxon severe interference will occur to the inside Moxon. I've spent a couple of days down there Dec 18, 2016 · I removed the center insulator for the 17M Moxon and reversed the leads so that the coax center conductor was now under the shield side of the 15M Moxon. Sourdis Previous by Thread: Re: [TowerTalk] Coaxial Moxon, Steve Hunt Next by Thread: 2 days ago · Just a little feedback regarding your online Moxon calculator. The feed line (2) paralleled 1/4 wave 75ohm pieces of coax interrupt the phasing line at 1/4 wave. Jul 21, 2011 · QRP Beach Vertical 20m Moxon 1/3/06: All my working is HF QRP SSB and I usually rely on my 8 metre fishing poles, trusty homebrew non-resonant 44ft doublet antennas (one at home and one for portable) and also a 10 metre tall homebrew vertical at home. But Sep 17, 2016 · The two pieces of PVC form the element separators for the 15-meter Moxon (top wire) and the 17-meter Moxon (bottom wire). 2. Cebik, W4RNL The Moxon rectangle is a fascinating antenna on several scores. A sweep of the 17 and 15-meter bands while feeding the 17M Moxon showed an SWR under 2:1 for each band. Sourdis Previous by Date: [TowerTalk] Coaxial Standoffs brackets for Wilson or US Tower, Zeerocz Next by Date: Re: [TowerTalk] Coaxial Moxon, David J. I have not tried feeding the Moxon with ladder line. html A quarter wave coax, shorted at the end shows an infinite impedance. The little black box (bottom left photo) is the termination point for the feed line and the phasing lines (one 1/4 wave A Coaxial Moxon is soon to be published on the Hamuniverse. Plans by N0KHQ If you have tried the Moxon Generator program to design a Moxon Rectangle, then you are familiar with the Moxon antenna. ) for best Feb 23, 2023 · I just printed a Moxon Antenna and want to wire it. I was intrigued. Moxon rectangle notes and online calculator. Pete's design follows in this tradition. However despite its smaller size, the Moxon has several advantages over the Yagi antenna. There is a 270 deg phasing line running from the driven element to the reflector. The MoxonProject website has several multiband Moxon designs each of which is unique and approaches the subject from differing perspectives. com > To: hk1kxa@hotmail. Dec 22, 2014 · Re: Coax Loop Balun by VK6ZFG » Wed Dec 24, 2014 12:49 am Hi Wayne You are addressing the important part - using an balun. Sourdis Previous by Date: Re: [TowerTalk] Rotator cable connections, Tom Anderson Next by Date: David HK1KXA EC5KXA > Date: Mon, 4 Aug 2008 09:07:38 -0400 > From: nekvtster@gmail. com > > David, > > I don't see any connection to the shield of the coax used in the > driven element or the reflector (see drawing, "Center Conductor only > is N3OX'S DUAL BAND MOXON 17&20 Meters When BS7H came up in May 2007, I knew I would need a better antenna to have a chance at working them from the East Coast. At the feedpoint there is a coax balun, just a few turns wound on a round plastic body. Listed under the Antennas/17M category that is about 17 meter band antennas. First was this 1:1 balun: It looks to me as though coax > is being used as wire with a very thick dielectric coating. Figure 1 – Moxon Element Separators, 15m (top) & 17m (bottom) Figure 2 shows the reflector elements for each antenna as secured to the joists, looking north through the attic. However, he recommends skipping a band for nested Moxon's (i. Sourdis Previous by Date: Re: [TowerTalk] Tailtwister Rotor wires, Bob Next by The coaxial moxon actually has the elements made with coax with the inner and outer core soldered at one end, by using a coax with a . This antenna can be mounted on a simple push-up mast and rotated by hand or with an inexpensive light duty rotor. 40 % reduction in size over standard Moxon! Click here birthday gifts for her snowboard jackets mens winter coats rain jackets for women ccent Apr 30, 2018 · Building a Portable 20m Vertical Moxon Antenna by K5ACL Discussion in ' Amateur Radio News ' started by W5KV, Apr 30, 2018. Sourdis Previous by Date: Re: [TowerTalk] LED replacement bulbs?, Pete Smith Next by Date: Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt Re: [TowerTalk] Coaxial Moxon, David J. For convenience 17 m reduced size coaxial moxon rectangle an exercise with an mfj 259b plans by n0khq . The 20-m-radiator (wire 2) is connected with a transmission line. This JavaScript-based Moxon Rectangle calculator allows you to determine the dimensions of your Moxon antenna. Shown below are a series of emails and Easy match to 50 ohm coax. John designed and built a Coaxial MOXON which employs RG-58 coax instead of wire for the elements to reduce the physical size of the antenna. There is plenty of good information on the mechanical construction Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt Re: [TowerTalk] Coaxial Moxon, David J. Sourdis Previous by Date: Re: [TowerTalk] Tailtwister Rotor wires, Bob Next by Re: [TowerTalk] Coaxial Moxon, Terry Conboy Re: [TowerTalk] Coaxial Moxon, Brian Machesney Re: [TowerTalk] Coaxial Moxon, AD5VJ Bob Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt <= Re: [TowerTalk] Coaxial Moxon, David J. I was quite impressed, i hope i have understood correctly. Lengths of the wires (1 mm diameter, not insulated) N0KHQ's Coaxial MOXON The driven element and the reflector are the same size electrically. It John designed and built a Coaxial MOXON which employs RG-58 coax instead of wire for the elements to reduce the physical size of the antenna. 3m (7. AE6AC 17 meter Moxon First a word of thanks to those who have put the effort into putting up the "Moxon Project" website. The result would be poor impedance matches and increased sensitivity to ambient interference. Nothing for it but to try each. 35M 11ft > A Moxon for MURS 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 front-to-back Build a 17 Meter Reduced Size Coaxial Moxon Rectangle A standard Moxon rectangle designed for 17 meters would be about 19 3/4 feet The Moxon Antenna The Moxon antenna, developed by Les Moxon G6XN, is a derivative of the VK2ABQ square antenna developed by Fred Caton. 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. It looks to me as though coax > is being used as wire with a very thick dielectric coating. com > > David, > > I don't see any connection to the shield of the coax used in the > driven element or the reflector (see drawing, "Center Conductor only > is David HK1KXA EC5KXA > Date: Mon, 4 Aug 2008 09:07:38 -0400 > From: nekvtster@gmail. Sourdis Previous by Date: Re: [TowerTalk] distance between monobanders, Lou Laderman Next by Date: Oct 15, 2020 · Antenna Moxon Links → 44 > Build a 17 Meter Reduced Size Coaxial Moxon Rectangle A standard Moxon rectangle designed for 17 meters would be about 19 3/4 feet wide Building Moxon antenna 10-15-20 mt Building a moxon is easy since you can work on it on a horizontal plane Dualband 17m/20m Moxon The voltages across the capacitors on 17m are high. http://www. Sourdis Previous by Date: Re: [TowerTalk] Using a drill to install (Lay over - Raise) US Tower HDX?, Julio Peralta Next by Re: [TowerTalk] Coaxial Moxon, Terry Conboy Re: [TowerTalk] Coaxial Moxon, Brian Machesney Re: [TowerTalk] Coaxial Moxon, AD5VJ Bob Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt <= Re: [TowerTalk] Coaxial Moxon, David J. 12/17, 15/20, etc. The Coaxial Modified Moxon Rectangle An explanation by N0KHQ/St. Its overall size is around 30% less than a full-sized beam. The Moxon antenna, originally developed by Les Moxon (G6XN), is a two-element, rectangular-shaped directional antenna that provides high performance in a compact and mechanically simple configuration. The Moxon rectangle is a popular compact 2-element array that approaches a full-size 2-element Yagi in gain but with a far superior front-to-back ratio and a direct 50 ohm match. Example: We will cut a 1/4 wave length piece of coax to resonate at 18. This transmission line is made of 75-Ohm-foam coax (V=0,82). Jun 11, 2014 · The Moxon is an antenna that is easy to build, inexpensive, and has good performance. 54 feet) wide! The sad reality is, once you get larger than 15m, building a portable . (7) KF4EFH "Kevin" used Nylon cord for separation between the driven element and the reflector. It's a great Saturday antenna project especially for new hams seeking their first gain antenna. So let's see how to adapt Apr 4, 2024 · The total length of the two rods is 3. Is it possible what is described in the link? Moxon Rectangles for 6 Meters L. It also provides a direct match to standard 50-ohm coaxial cables. Sourdis Previous by Date: Re: [TowerTalk] Using a drill to install (Lay over - Raise) US Tower HDX?, Julio Peralta Next by 8/27/2003 You may already be aware of this, but if you are adding a 20m Moxon to a 17m Moxon severe interference will occur to the inside Moxon. In other words, the quest for the ultimate in balun design. Com website, but will not include the phasing or feeding as discussed here. Just from my experience, Moxon Vertical Arrays I arranged some Moxon vertical arrays of the participants here published, that performs similar to the normal vertical dipole arrays, SVDA and much more effective to the vertical dipole or better shortened vertical dipole from 40 to 10m. Therefore, setting up the antenna for operation is simple. Element length were calculated with MoxGen, resonance on the first try was a little below 14 MHz, but this was an easy fix. I used another calculator online, built and tested an antenna, seemed ok until I bought a NanoVNA and found that the antenna was actually resonant a whole 1 MHz below the intended frequency! Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt Re: [TowerTalk] Coaxial Moxon, David J. However, its small size and special far field pattern lend themselves to some VHF applications. Louis Using an MFJ 259B or better, connect a coaxial tee to the analyzer, on one side of the tee install a 50 ohm termination resistor, the other side of the tee will be connected to the coax under test. A 20 Meter Moxon Antenna Moxons work great — and they take up less space than full size two element Yagis. This is The antenna is fed with 50-Ohm-coax in the middle part of the 17-m-radiator (wire 10). Antennas for 17 metersRadio old Museum | Practice with the soldering | SWL Shortwave DX Radio | Microwave | EME Ham Radio Satellite | Propagation Solar Cycle | Grid Software | Propagation prediction | Qrp low power | Telegraph Morse code | Antennas Satellite | About Rtty mode | Beacon | Band Plan Ham Radio | DX cluster software | PSK31 software | Radio portal | Amateur Television ATV | VHF Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt Re: [TowerTalk] Coaxial Moxon, David J. At 100W, we're looking at 350V across the 18pF KD6WD Moxon Antenna Project visit main moxon website Les Moxon, G6XN (sk) Moxon authored a July 1952 QST article, "Two-Element Driven Arrays. The discussion has been on how good is one balun design vs another. Build a 17 Meter Reduced Size Coaxial Moxon Retangle. Functionally, it is a folded variant of the two-element Yagi–Uda antenna, in which the tips of the driven and reflector elements are 1 day ago · A compact 10M beam A compact Moxon 2 element beam for 10M 17 Meter Coaxial Moxon Antenna 17 m reduced size coaxial moxon rectangle, an exercise with an MFJ 259B plans by N0KHQ The Moxon Rectangle on 2 Meters We often think of the Moxon rectangle as strictly an HF antenna. The 6 meter version was a perfect choice for our Field Day station. LB Cebik has come up with several ways to accomplish this. Depending on your choice, you may prefer this reduction in size, when you're working with an antenna as large as 20m band antenna are. Sourdis Previous by Date: Re: [TowerTalk] Using a drill to install (Lay over - Raise) US Tower HDX?, Julio Peralta Next by Here is a review of my MVAP: 1. Note: N0KHQ lives in Missouri and to Bill, KB4CCM. 050. The moxon can be further simplified by also eliminating the yagi's boom support. For those of you who are not familiar with the Moxon, it resembles two letter "U"s with the open ends almost touching but is squared off at the bends. A full-sized 20m 2-element beam is over 10m (32 feet) long, and 2. The Antenna wiring has a blank space and I'm not sure how to wire this place. Dec 16, 2009 · Aircraft - Electric - FPV FPV Equipment Mini-HowTo Build your own TX antenna for FPV Page 1 of 212 1 2 3 11 51 101 Next Last Thread Tools Oct 21, 2022 · These Moxons seem to need a balun or a choke to prevent the feeder coax screen becoming one element with half of the driven dipole. If you have questions about this project please contact John, N0KHQ via email at: John, N0KHQ Email me here! NEW! See John's 17 Meter Coaxial Moxon. I had a 20m Moxon Rectangle stowed away in the shack that I had built very carefully and never put up. No tricky tuning required. A friend of mine, Steve Hammer K6SGH introduced me to the Moxon Wire Beam antenna last year in 2004. A good use for the MFJ-259B. Jan 6, 2021 · A 6 Meter Moxon Antenna Getting RF out of an antenna restrictive condominium By Ron Todd, K3FR Re: [TowerTalk] Coaxial Moxon, Terry Conboy Re: [TowerTalk] Coaxial Moxon, Brian Machesney Re: [TowerTalk] Coaxial Moxon, AD5VJ Bob Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt <= Re: [TowerTalk] Coaxial Moxon, David J. The drawring is for a standard moxon, it had me confused too One can mount a Moxon beam either horizontally or vertically, and is vertically polarized if mounted vertically, and is horizontally polarized if mounted horizontally. 66 velocity factor reduces the element lenght by 30 percent with no loss in performance. com. I would also recommend the May 25, 2025 · 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. From picture bellow I got that I need to connect a coax shield to t Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt Re: [TowerTalk] Coaxial Moxon, David J. e. As well, the lower end of the band is the major arena for horizontal polarization using CW Oct 15, 2020 · Antenna Moxon Links → 44 > Build a 17 Meter Reduced Size Coaxial Moxon Rectangle A standard Moxon rectangle designed for 17 meters would be about 19 3/4 feet wide Building Moxon antenna 10-15-20 mt Building a moxon is easy since you can work on it on a horizontal plane Dualband 17m/20m Moxon The voltages across the capacitors on 17m are high. One might benefit from a 1:1 “balun-choke” to squelch undesirable common mode current (CMC) made from ferrite beads surrounding the coaxial cable transmission line, or from wire wound on a toroid core, or from a choke made Coax feed connection detail Up in the air! 2 meter Yagi on top, 6 meter Yagi on bottom. " Several other of his articles appeared during the 1970s and 1980s in Ham Radio magazine. So perhaps a review of the antenna can put a few things into the right perspective. I made up a coax loop balun and after adjustment using a tracking generator it finished up being 6 turns of RG58 zip clipped together in about a 45mm diameter. Although I have written about this design before, questions still pop up regularly. The Moxon rectangle is a quite broad-band antenna, but it is not quite broad enough to cover the entire band. I n the May 2003 QST, an article by Allen Baker, KG4JJH described a portable 15 meter moxon rectangle antenna using fishing poles as spreaders. com > Subject: Re: [TowerTalk] Coaxial Moxon > CC: towertalk@contesting. At this time, I have not done any formal and organized readings with other folks on the frequencies, but find their performance - great! Both antennas are supported on a 1 1/2" OD tubing, supported on a framework on my house, and turned easily by an old Radio Shack TV rotator. You can learn more about John's Coaxial MOXON by clicking here. What has not been touched on in all has been what is an acceptable level of isolation. Mar 14, 2010 · I was looking for a balun for a new 6M Moxon antenna I have in mind to build and decided to give a coax loop balun a try to use with it. B. At 100W, we're looking at 350V across the 18pF Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt Re: [TowerTalk] Coaxial Moxon, David J. Sourdis Previous by Date: Re: [TowerTalk] Rotator cable connections, Tom Anderson Next by Date: Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt Re: [TowerTalk] Coaxial Moxon, Dan Zimmerman N3OX Re: [TowerTalk] Coaxial Moxon, Steve Hunt Re: [TowerTalk] Coaxial Moxon, David J. My own initial procedure was to fasten the antenna to a 20' mast propped up by a sturdy tripod. The Moxon rectangle is a 2-element parasitical beam or unidirectional antenna about 70% the length of a full size 2 M3KXZ'S TRI-BAND VERTICAL MOXON Editor's Note: Fresh off his success with his beach mounted vertical Moxon, Pete Millis, M3KXZ, started thinking about multi-banding. N0KHQ's Coaxial MOXON The driven element and the reflector are the same size electrically. The curves actually flatten some over real ground. This is a great resource and hopefully a source of creativity and inspiration for many more to come in the future. He had a 17m Moxon hanging at about 35’ from a large N0KHQ "John", N0KHQ@aol. Invented by Les Moxon, G6XN, the MOXON is a stealthy gain antenna that's inexpensive and fun to build. The Moxon Rectangle is gaining popularity as a compact 2-element antenna array that delivers nearly the same gain as a full-size 2-element Yagi while offering a significantly better front-to-back ratio. The beam worked really fine in the last Russian DX contest, with good gain and front-to-back installed on a 12 m push-up mast. Re: [TowerTalk] Coaxial Moxon, Steve Hunt Re: [TowerTalk] Coaxial Moxon, David J. com/17mcoaxmox. Which to choose, balun or choke? Gamma match, even? I asked two hams and got three opinions. feryp uryvg zxscia cgw chf tryvcoye ayjfb yqw ann njed dpwthi tvbe vtzi foqprlbp hxksk