15m Moxon Project The Assembly: VA3AQB. I want directional and good performance antenna. In the May 2003 QST, an article by Allen Baker, KG4JJH described a portable 15 meter moxon rectangle antenna using fishing poles as spreaders. Light enough to be turned with a small light duty TV rotor. I've noticed that the signals are usually 2-3 S units above the dipole and the B&W. 20M Moxon rectangle 9" gap This results in a rectangular shaped antenna with directional properties and very good F/B ratio. So clearly when building advanced wire antennas if you don't take wire insulation in to consideration when calculating your antenna dimensions then your antennas won't even come close to being resonant where you want them and in the case of the 20m Moxon it wont even be resonant in the ham bands . I tried to maintain the dimensions for the active radiator elements and allowed the spacing between the two upper traps to fall where it might after winding the 8.5 turns on each for trap. org/files/qst-binaries/6 meter moxon.zip. Then, keeping the front to back dimension the same, shorten the long sides to 6 metres length and work out what inductance you need to add into the long sides to bring both elements back to resonance. …Reality… 07-Oct-2014 Measurements performed with the great support of Hardy, DL1GLH and DK2WT for earlier draft pattern records. A standard Canadian Basement hockey nets and a rink painted on the floor!! PL259 Fitting (5) Portable (4) Or the complete 10 meter band. It was quite easy, since this one is a lot smaller. The work has resulted in a new antenna design that trades a modest increase in size for a very significant bandwidth enhancement. . Ready to Ship! Antenna Project: 6 ELEMENT DUAL BAND WIRE BEAM FOR 2 MTR AND 70 CM By DU1RZ. 10 and 11 meter can be combined in one antenna. Dimensions 4,0 * 2,5 * 2,5 meter, weight about 10,0 kg, The gain is 9,3 dBi. 5-band antenna system (20m, 17m, 15m, 12m, 10m) with only sligtly increased additional effort. mast which holds three other antennas, viz., a 2-meter vertical, a 40-10 Meter Off Center Fed (OC F) Dipole, and a 10-meter rotatable aluminum dipole. DO NOT use Nylon. Metal guys are not recommended, use Kevlar or a rope that does not stretch. Price: euro 220,- plus transport- and PayPal costs . 14 mhz. My actual antenna turned out to be closer to 9". A standard Canadian Basement hockey nets and a rink painted on the floor!! The antenna has a very low VSWR across the whole 20 meter band and the front-to-back ratio is still about 18-20 dB at the band edges and appears to exceed 30 dB near the band center Unlike other manufacturer's antennas, this model meets its published specifications. Elevation Plot on 20m We can offer you this antenna in a compleet antenna kit For more information send us an e-mail or look on www.dx4.us Initial dimensions came from the Moxgen program for the 20 metre Moxon in free space. VSWR curve for SE-20M retuned for the 17 meter band (18.086 Mc to 18.168 Mc). The following is the result of some experimentation that convinced me that Vertical Moxon is a feasible option, with some reduction of performance but yet very effective. At higher frequencies, the W8JK reverts to the classical figure 8 pattern typical of the phased array beams. This link is listed in our web site directory since Wednesday Dec 10 2008, and till today "Dualband 17m/20m Moxon" has been followed for a total of 3856 times.So far no one has rated yet, so be the first to rate . This allows the antenna to be lowered and adjusted for maintenance and tuning. 20m 2-element light-weight Yagi. Since the antenna is constructed with angles of 90 ° the losses are negligible compared to an antenna of a standard half wavelength. frequency one and fed with a common coaxial feed line. Larry Banks, W1DYJ 1Notes appear on page 40. The balun is attached to the top of the house using Para-cord and a pulley, the cord is tied off on a cleat. Other wire sizes with different insulation thicknesses will be different. antenna may be built as a 20 meter, 17 meter, 15 meter, 12 meter or 10 meter monoband vertical antenna. This antenna can be mounted on a simple push-up mast and rotated by hand or with an inexpensive light duty rotor. The tips of the ends of the driven element and the tips of the ends of the reflector should be about 9 inches to 10 inches apart. Still very good gain 8,9 dBi and FB. Constructed of 7/8", 3/4", 5/8" and 1/2" hard drawn 6063-T832 . Dimensions 4,0 * 4,0 meter, weight about 3,0kg. You may enter the diameter of your . The gain on 20M is roughly constant across the band which is a bit Horizontally mounted SE-20M Moxon beam antenna. Inserted the driven & reflector wire through the corner holes and tie wrap at the noted dimensions for your antenna. 283 - Rotatable Vertical Delta Loop for 20m. Description. Moxon-Modifying the C3-Type Tri-bander L. B. Cebik, W4RNL (SK) The Force 12 C3 tri-band Yagi has become a very popular compact beam for the general operator. 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. New Hex Beam from MFJ delivers solid gain and directivity on 20,17,15,12,10, and 6 Meters in a low-profile package that will have your pocketbook and your neighbors smiling!. MFJ-1846 Hex Beam. Dimensions 121x10x10cm, Weight 2.35kg. Scheme This is how my Vertical Moxon looks like: (2,8m x 7,7 m): Two are the key points making this antenna robust enough: a) The upper part will support the Moxon. Quad 3 element. About 20 meter homebrew MOXON The resource is currently listed in dxzone.com in 2 categories. Moxon Rectangle (Yagi) for 14MHz - 20m. This beam is a 2-Element-Yagi with radiator and reflector and reduced size to about 75% of a normal beam. RickC. In order to use our antenna calculator, you'll need to know the frequency on which you want your antenna to operate.. (7) Masts & Tripods (5) Mobile Mount and Body Mount Etc (12) Paragliding Headsets & Aerials (3) Scanning Aerials (2) VHF - UHF (36) 2 metre (5) 4 Metre (4) 6 Metre (3) 70 cms (3) Dual - Triband (4) Hand Held. About Dualband 17m/20m Moxon The resource is currently listed in dxzone.com in 3 categories. Inv.-V feed line with and without short circuit. I had a 20m Moxon Rectangle stowed away in the shack that I had built very carefully and never put up. We tested it out for the first time on Friday night. Review: Hi Paul I have used your Moxon calculator for 2 antennas. No two Moxon's are identical save the dimensions of the elements and spacings. 4NEC2 calculated radiation pattern for SE-20M set for 17 meter operation. A Moxon Rectangle (Yagi) for 14MHz - 20m. The 20m antenna is fantastic! The 2 diagrams on 20m band show the interaction with the inv-V, mounted below the Moxon. F/B >20 dB, peak. This article is not about the original construction of that antenna. The 2-Element-Yagi with reflector has normally a 0,2- lambda -boom and an impedance of 50 W. My eyesight is nearly gone but was able to get the antenna assembled and in the air. Some Dimensional Data The Reflector Element is a single piece of 1.5mm (14 guage) wire. The 20 Meter Vertical Moxon is a big antenna that requires guy wires (rope). VQ9's in Chagos and 3B8's on Mauritius in the Indian Ocean, TX0DX on Chesterfield Reef, VK0MM on Macquarie Island in the Antarctic . Three Elements Inverted Vwirebeam Antenna For 40 Meters Band. A 2 element Fixed, Reversible Yagi for 20 Meters. Our antenna doesn't require a large expensive tower, many people are using inexpensive push up poles. I started this project after building my first mono band moxon for 15 mtr band. The antenna plans included a second 20m antenna to work both USA and Europe in the day time. In that case William, start with the initial measurements for a 20m Moxon using the Moxgen program. This is a World Wide Web front end for a public domain program written by W4/VP9KF using PHP. Lower 20m Trap - 14 T RG-6 on 5.25″ form. The 4 element can be build as mono band for 6, 10, 11 or 12 meter. The main category is Moxon antenna plans that is about Links to moxon antenna resources. January 6, 2015 Stumbled across a good Moxon Antenna Calculator this morning which was created by Paul Evans W4/VP9KF. My decision to go with a Moxon was because I've been using a 6 M Moxon for nearly 4 years and it fits my operating needs perfectly. HF Multiband vertical. Hi i need advice to this two choosing. Invented by Les Moxon, G6XN, the MOXON is a stealthy gain antenna that's inexpensive and fun to build. Inserted the driven & reflector wire through the corner holes and tie wrap at the noted dimensions for your antenna. The vertical section is 21'9". The Moxon Rectangle was first introduced by Les Moxon, G6XN during the 1950's. Since then it has been a very popular limited space Yagi do to its very compact size. Description. Dual band Moxon antenna (2 + 3 elements) for 10m and 6m, ideal for Sporadic-E or DX. I like also moxon. Construction Drawing Sheet 1 presents an overview of the antenna assembly. Inserted a 1 inch pole through the hub. Not only for Sporadic-E QSOs on the bands 10 and 6m, the 2850MOX antenna made by EAntenna offers a high gain with very compact dimensions. ** = average gain at 20m above ground (= dBd + 2.15 dB isotropic + about 5 dB ground reflection) Since the Moxon is a 50 ohm antenna, you may or may not want to use a 1:1 balun. I attached the spreaders to the hub. SE-20M. attic mounted Moxon rectangle. 20m Moander Yagi Antenna 3elements Pa14 3 6hd Full Size. The other dimensions I use are not dimensions of wire, but rather of spacing. The Front to Back is good, very closed at the back. 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. 20m has been spotty since I built it, so I'm just testing it out for the past two weeks. When I tested it with an analyzer, we were able to get an SWR of 1.6:1. Forward gain almost identical to that of a two-element Yagi but with better F/B ratio. Now we can build the antenna and have a good chance of it working! I'll post a short video of the same signal from the moxon, a 20m dipole beside it, and a B&W 1.8-30 at 20 feet apex. Max. Moxon Style Rectangle (Yagi) for 14MHz - 20m The Moxon Rectangle was first introduced by Les Moxon, G6XN during the 1950's. Since then it has been a very popular limited space Yagi do to its very compact size. 4-BAND COLA ANTENNA (20-17-15-10m) - G8ODE (Concentric Open Loop Antenna Fed Off-Centre) G8ODE Design Published 28 May 2014 issue 1.0 This article is dedicated to my friend Bill Stevenson - G4KKI (SK), a fellow RSARS member, who shared my 281 - Vertical Moxon Antenna for 10m. (like Moxon antenna). Some tweaking of the dimensions may be required to compensate for the interactions of nested rectangles, however. When it comes to lightweight directional HF antennas, the MFJ-1846 Hex Beam tops the list for its low-profile footprint, solid construction, and DX-snagging design -- all for a . Your result will consist of: Your total antenna length (L);; Length of one arm of the antenna (l); and; Wavelength, as well as its portions: 1/2, 1/4 (it'll also allow you to use it as a 1/2 wave dipole calculator). If you view the various antennas in the What's New section on the homepage, you'll see what we mean. Table 2 summarizes the performance factors for the W8JK array in a similar manner as was done for the Moxon. RickC. The Moxon rectangle was developed by Les Moxon, G6XN, as a derivative of the VK2ABQ square, with further refinements to natural beam dimensions by L. B. Cebik, W4RNL2. Because EA8URL has only one 20m yagi we had to bring another 20m yagi with us. Overview. 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. G1YBB_20m_Wire_Moxon.zip Here are the calculated dimensions above applied to the 3D design described below. In Stock! I built the antenna to the dimensions in the EZNEC model listed on Sheet 1. mast which holds three other antennas, viz., a 2-meter vertical, a 40-10 Meter Off Center Fed (OC F) Dipole, and a 10-meter rotatable aluminum dipole. The Moxon Rectangle comprises of 2 elements, a driven element and a reflector element. This antenna has a good F/B and very high gain. About 20 meter homebrew MOXON The resource is currently listed in dxzone.com in 2 categories. A basic outline drawing of the antenna is shown in Figure 1, while the full material list is available on the Web site. Inches, 2. The Moxon Rectangle comprises of 2 elements, a driven element and a reflector element. Since the antenna was tuned for 14.250, we The Antenna Store & More. The Moxon-Beam was introduced by L. Moxon (G6XN) in his book "HF Antennas for all Locations" (RSGB- Publications, Great Britain 1993). The Moxon Beam By Dk7zb Yagi Antenna. Yagi antenna calculator, yagi antenna dimensions, learn to build a yagi antenna, guide to yagi antennas Simple 3 element Yagi Beam Calculator for Amateur Radio Select number of elements: ; In the advanced mode:. My first 2 meter moxon was a regular 2 element design, using some leftover #14 gauge wire from the 15 mtr moxon and pvc pipes. x K4KIO /2/ - gives detailed cookbook for construction of 5-band Hexbeam (broadband). This antenna was designed for the CQ WW CW 2009 at EA8URL. The main category is 14 MHz meters ham radio antennas that is about 20 meters band antennas. Line Isolation / Choke Balun: A line isolation balun isolates the antenna elements from the coaxial transmission line so that power is radiated by the dipole antenna elements and not by the feed . 15m Moxon ProjectThe Assembly: VA3AQB. Les Moxon, G6XN (sk) Moxon authored a July 1952 QST article, "Two-Element Driven Arrays." Several other of his articles appeared during the 1970s and 1980s in Ham Radio magazine. Figure 1 — A comparison of the lower radia- tion angle and greater gain of the Moxon (red) compared to the dipole (blue). New Pact 6 40 Meters Yagi. 285 - Compact Moxon Antenna 5dB-Gain for 40m. Quiet antenna because of the closed loops. I then shifted this into EZNEC so I could optimise the model for a 20m vertical Moxon rectangle constructed from at low height above the beach, and constructed from 1.3mm dia copper wire with 0.85mm PVC insulation (heavy duty speaker wire). 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, 2×4 assembly holds it up! M.Springfeld DL2GMS 16- Mar.2014 Old rotor adapter 10mm aluminium plate Elevation Plot on 20m Measurements to build a Moxon 8 element: This is the Moxon 6 element + 2 extra elements, so you can start with the 6 element and improve it with 2 extra elements. Green line shows impedance; Red line shows VSWR, and Blue line show return loss. Moxon 4 element. 20m Pa7mu. This antenna has a very good F/B and bandwidth. Inserted a 1 inch pole through the hub. I decided to try the Moxon for 20 M till I got the beam rebuilt. 2M Moxon Antenna: I tried my first contest recently (RSGB 2M UKAC) and really enjoyed myself, although I realised just how restrictive my J-Pole antenna was when it comes to SSB and directionality. Mounting the 20 metre delta loop. Hb9cv 2 element yagi for the 11 meter band radioaficion dxbeam . Dan Zimmerman, N3OX - Amateur Radio. at 1.5:1 or less VSWR. The best gain in a small antenna. My EXNEC model actually has the tips 9 3/4 inches apart. . Turning Radius 11 ft. A Moxon Rectangle (Yagi) for 14MHz - 20m The Moxon Rectangle was first introduced by Les Moxon, G6XN during the 1950's. Since then it has been a very popular limited space Yagi do to its very compact size. The following is the result of some experimentation that convinced me that Vertical Moxon is a feasible option, with some reduction of performance but yet very effective. 287 - Two Elements Phased Vertical Antenna 3dB-Gain for 40m 15m Moxon ProjectThe Assembly: VA3AQB. This antenna features an additional third element for 6m, which leads to a particularly high gain on this band. The Wb0cmt 3 Element 2 Meter Yagi Using Pvc Boom. The antenna is similar to a 2-element Yagi with the element ends folded toward each other. Dimensions 4,5 * 4,05 meter, weight about 3,0kg, gain 9,3 dBi. EAntenna Moxon antennas are characterized by the idea of its designer, Less Moxon, G6XN. The feed point (balun) is mounted at the top of the delta in the image above (option #1), the feed point can be positioned . Dual band Moxon antenna (2 + 3 elements) for 10m and 6m, ideal for Sporadic-E or DX. Im long time use dipol and long wire antenna. The reflector is longer than the driven element, and both are around ½ wavelength long. The initial Moxon, in the middle, shows the tips bent 90 degrees towards the center. This link is listed in our web site directory since Tuesday Dec 30 2008, and till today " 20 meter homebrew MOXON " has been followed for a total of 10068 times. The Moxon Rectangle comprises of 2 elements, a driven element and a reflector element. Im very compliniant QRM. This antenna weighs about 25 lbs. A 20 Meter Moxon Antenna Moxons work great — and they take up less space than full size two element Yagis. Dk7zb 2 Element Yagis For Shortwave. It was pretty clear that a push-up pole with a rotor and full size beam was not going to be a workable situation, despite the antenna weighing only 18 lbs. Also as wide band. Gain 5.5 dBi, free space, peak. Note these dimensions apply to 16AWG/1.5mm2 tri rated wire. dimensions of the antenna. Rectangle-shaped antenna. Mine stands about 30' tall overall. The Moxon Rectangle comprises of 2 elements, a driven element and a reflector element. Specifications: • Full band coverage on 20 or 17 or 15 or 12 or 10 meters with SWR under 1.5:1 • No Tuner needed • Bandwidth: Over 750 kHz • Power Handling up to 5 kW . This program has been derived from a public domain BASIC program written by L. B. Cebik, W4RNL and previously published on the web. antenna may be built as a 20 meter, 17 meter, 15 meter, 12 meter or 10 meter monoband vertical antenna. A Moxon Rectangle (Yagi) for 18MHz - 17m. I installed an InnoVAntenna, Mox-14, 2-element, 20-meter monoband Moxon Yagi in October of 2019 and have it mounted on a Penninger Tipper mast at 35 feet (11 meters). pattern at 20M is similar to that of the Moxon. beam Moxon (14 MHz) DXBeam (DXM20-2mx) 20 meter 2 element beam Moxon (14 MHz). Figure 1 - Moxon Designs The top design in the figure shows the classic 2 element parasitic Yagi, with a driven element (DE) and reflector (REF). One for 24 MHz the other 18 MHz using Ali tubes. Dimensions 4,0 * 4,0 meter, weight about 2,5 kg, gain 7,5 dBi. Great antenna for limited space. It should be fairly straight forward. An effective 10-20m DX antenna for deed restricted lots…. Nevertheless, its 35' wing-spread has prevented some would-be owners from purchasing the antenna because their available space is not sufficient for full-size 20-meter elements. Then possibly convert to 17M. The cheap steel in one section of the mast apparently fatigued from the cold and it buckled like a toothpick. I was intrigued. It's a great Saturday antenna project especially for new hams seeking their first gain antenna. The main category is 14 MHz meters ham radio antennas that is about 20 meters band antennas. The Moxon rectangle was developed by Les Moxon, G6XN, as a derivative of the VK2ABQ square, with further refinements to natural beam dimensions by L. B. Cebik, W4RNL2. Specifications: • Full band coverage on 20 or 17 or 15 or 12 or 10 meters with SWR under 1.5:1 • No Tuner needed • Bandwidth: Over 750 kHz • Power Handling up to 5 kW . OB2-40 Moxon Yagi 40m. To great Elevation Plot on 20m Moxon 6 element: This antenna has a good F/B, bandwidth and gain. SWR <2:1 except for high end of 10 and 6 meters. Dimensions for Hourglass Antennas Resonant Frequency Wire Length Loop Height Loop Width (MHz) (cm) (cm) (cm) 144.2 430* 175 37 222.1 279* 114.5 23 432.1 142** 59 12 *#16 AWG insulated **#14 AWG bare narrow-band antenna, but the activity on these bands using horizontal polarization covers only a few . Performance. The Moxon Rectangle was first introduced by Les Moxon, G6XN during the 1950's. Since then it has been a very popular limited space Yagi do to its very compact size. And a good band width. Dimensions 10,2 * 4,0 meter, the aluminum boom is only 8,7 meter, gain 11,07dBi. hexagonal structure. The simple 15′ vertical antenna shown mounted on the railing of our second floor deck has produced almost 200 countries worked around the world…. 15m Moxon Project The Assembly: VA3AQB. This link is listed in our web site directory since Tuesday Dec 30 2008, and till today "20 meter homebrew MOXON" has been followed for a total of 10068 times.So far received 13 votes for a total score of 6.53/10 10 CLS:PRINT "Program to calculate the dimensions of a Moxon Rectangle." 20 PRINT "All equations correlated to NEC antenna modeling software for wire diameters" 30 PRINT " from 1E-5 to 1E-2 wavelengths." 40 PRINT "L. B. Cebik, W4RNL (SK)" 50 INPUT "Enter Desired Frequency in MHz:";F 60 PRINT "Select Units for Wire Diameter in 1. The antenna is similar to a 2-element Yagi with the element ends folded toward each other. The Moxon Rectangle is a very popular limited space Yagi due to its very compact size. This antenna features an additional third element for 6m, which leads to a particularly high gain on this band. 284 - Mini-Horse Antenna 10dB-Gain for 40m-to-2m. You can also view a variety of different hubs and designs here. The SE-20M can be also be setup for 17 Meter operation by resetting the reflector and element spacer settings with an VSWR of 1.3:1 or less across the 17 meter band. The Classic Hexbeam The Bavarian Contest Club took part in the M/M class with a team of German operators. 20 meter Moxon Beam that covers 14 to 14.350 Mc. 282 - Half-Square Antenna for 30m. Line Isolation / Choke Balun: A line isolation balun isolates the antenna elements from the coaxial transmission line so that power is radiated by the dipole antenna elements and not by the feed . PART 2 of "Gain Antennas - The 80% Solution" will appear in the February issue 28 1/4' 4 1/8' 2 7/8' 7 3/4' feedline Figure 2. Direct feeding is 50 ohms, so there . and the whole mast with antenna is raised and lowered using a brake winch on top of a 6"x6" pressure treated post. MA5B Minibeam very good antenna i think but expensive for me. 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Project | PDF | Screw | Equipment < /a > Description 281 - vertical antenna! | Equipment < /a > hexagonal structure plans that is about Links to Moxon antenna Moxons work —!, 10, 11 or 12 meter project after building my first mono band for,. Euro 220, - plus transport- and PayPal costs and both are around ½ wavelength long 90. Reduced size to about 75 % of a standard Canadian Basement hockey nets and a reflector element EXNEC model has..., many people are using inexpensive push up poles first time on Friday night program has been from. Tri rated wire of nested rectangles, however for 6, 10, 11 12! Now we can build the antenna assembled and in the EZNEC model listed Sheet... Innov 14MHz/20m Moxon Rectangle comprises of 2 elements, a driven element and a reflector element wire through the holes. Popular limited space Yagi due to its very compact size some tweaking of the apparently! 1/2 & quot ; hard drawn 6063-T832 band for 6, 10, 11 or 12.! 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