Elevation Plot on 20m Moxon 6 element: This antenna has a good F/B, bandwidth and gain. 7 Great Moxon Antenna Projects for HF Bands. Keep any conductive or even semi-conductive vertical support (or other object) as far away as possible from the antenna. 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. Yet there is a horizontally polarized antenna for 10 and 20 meter band, which is suitable for a limited space. Most Moxon antennas are built for HF frequencies and use wire and fiberglass rods as spreaders. The Moxon antenna or Moxon Rectangle is a simple and mechanically robust two-element parasitic array, single-frequency antenna. http://www.kwarc.org/10ghz/24g.html. Total Tax: 1.66. 5 0 obj The 20 Meter Vertical Moxon is a big antenna that requires guy wires (rope). To tune the antenna, connect a VSWR meter to the output of the LC circuit, briefly apply a low power carrier (5W) and adjust the capacitor for minimum SWR. According to Moxon [1], because of the very high impedance (i.e., very low current) at the end of a half wavelength antenna, only a small counterpoise (1m @ 14 MHz) or a few pF of capacitance to ground is required to return the current. Here below some monoband and multiband HF Moxon antenna projects: If you are interested on Moxon Antennas, dont miss our Moxon Antenna projects category. Mark 1 used a couple of fishing pole as supports but the bent far too much in the wind so I decided to engineer a more substantial arrangement that is easier to put up. 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 and still 50 Ohm. A Moxon antenna may be deployed either horizontally or vertically. Gap between the horizontal wires: 20cm. PT-GP1 Multiband HF Vertical Portable Antenna, WiMo Antennen und Elektronik GmbH (WiMo) will be the exclusive distributor for the complete 4O3A product. 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. Save my name, email, and website in this browser for the next time I comment. 4 pcs spreaders - Since the turning radius is approx 4.18 mtrs or 13.54 ft. you may use 2 rigid pvc and make it telescopic for each spreader. 284 - Mini-Horse Antenna 10dB-Gain for 40m-to-2m. Mine stands about 30' tall overall. The SE-20M, 20-Meter Moxon Beam covers 14.000 Mc to 14.350 Mc at 1.5:1 or less VSWR, or 18.068 Mc to 18.168 Mc at 1.3:1 or less VSWR when setup for 17 meter operation as well. For this "Moxon Beam" or MoxBeam project I describe a portable version of my attic antenna that is built from composite lumber, fiberglass tubing, No comments A sharp . %PDF-1.5 Take note that the driven element must be forward to the intended direction, and can be polarized either vertically or horizontally. Home ALL MFJ-1890, 10-METER MOXON ANTENNA MFJ-1890, 10-METER MOXON ANTENNA $159.95 Order Now! A collection of seven projects of Moxon Antennas for Ham Radio HF Bands. Remember to keep the open end of the RG8 secured from water (rain) because of high voltage. ConductaSeal - Element Joining Paste. Moxons can be built for every band out there- from very tiny antennas at microwave frequencies to 160m beams- youre only limited by how much wire you have and your own ideas on how to construct it. So let's proceed to the Mini-MOXON project at W7XA Linear . QRP Day In Vero Beach! This is the basic principal behind most commercial vertical antennas, that often become the solution to . A back-country hiker was rescued from Great Smoky Mountains National Park with assistance from amateur radio after she became exhausted on the trail a Read more It has about the same gain, larger F/B ratio, 50 feed, and is approximately 30% smaller than the Yagi. This is NOT WRTC 2022 Contest that will be held in Bologna in July 2 Read more, Dayton Hamvention 2023 is just over 6 months away, and next years Hamvention team has selected Innovation! as the event theme. Moxon Rectangle Generator. 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. Still, I like verticals. 70cm is a UHF Band- its versatile in that it can be used in both Urban and Heavy forest environments with ease, antennas are small, nearly every dual band on the market has 70cm frequencies, directional transmissions behave rather predictably, and last but most importantly, theres a huge spread of 30mHz to find a quiet spot. Very high efficiency J-Pole vertical antenna, excellent for DX activity and local traffic.. ConductaSeal - Element Joining Paste. With the tips of the driven element and reflector bent to nearly touch, it squeezes the width of the antenna into a much smaller space. It seems like it has a bit of characteristics of a NVIS but on a horizontal plane. A Moxon rectangle antenna for 4m by G6GVI I've heard a couple of stations recently discussing using a Moxon rectangle antenna on 4m, but had to go looking in my books to discover what they were . July 11, 2015 On 25 june 2011 this one helped me with FO/F6CTL in Marquesas island. Dimensions 4,5 * 4,05 meter, weight about 3,0kg, gain 9,3 dBi. Unfortunately the MoxGen program was written only for normal wire sizes. The 2850MOX Dualband antenna requires only one feed line. So, I set out to develop a simple antenna to fill in the gaps in my HF coverage. Select Hotel. Another practical tool for the kit. It beats the tar out of simply using a rubber duck on that HT. Amateur Radio Credited with Rescue of Back-Country Hiker in Tennessee As for the actual construction, I used a couple pieces of scrap 16AWG wire and an old cobra head from the connector box, wrapped along the outside of scrap PVC pipe bolted together. No comments RFinder and DMR-MARC.net has completed its integration For this project I chose the Moxon because its very easy to build, takes little time, but most importantly, can be rapidly broken down and stuffed into a ruck, taking up very, very little room on 70cm. 20m T-Monopole - 20m T-Monopole short vertical antenna for 20 meters by AA5TB [ Hits: 12011 | Votes: 6 | Rating: 8.33 ] A portable 10/20/40 mt vertical antenna pop - A portable vertical antenna for 10 to 40 meters, designed for mobile operations can be used in a car as seen in pictures. Sales price without tax 8.29. Has considerable gain. gross price Sales price without tax: 8.29. 28MHz Moxon rectangle. power is 3 kW. It can be used as a decent SIGINT antenna to get a rough bearing on signals as well, although Ive found that a Yagi is generally more reliable for this. thus the term, Low(er) Probability of Interception, or LPI. HDSDR is a freeware Software Defined Radio (SDR) program for Microsoft Windows 2000/XP/Vista/7/8/8.1/10. They re-calculated the atmospheric attenuation versus frequency and found it was way different than originally measured in the 70s. The moxon can be further simplified by also eliminating the yagi's boom support. I need to make a very small moxon as i have a small area to have it up ,,is this possible ??? ISS Crossband Repeater Ham Radio Contacts! 287 - Two Elements Phased Vertical Antenna 3dB-Gain for 40m 28MHz Moxon rectangle. 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. The parallel resonant circuit in this antenna uses a piece of RG8 coaxcable as a condensor. Adults Children. Icom IC-705 Custom Made Portable Go-Case, by Ralph. The DXZone is managed by ham radio operators with ham radio operators in mind. The main advantage of Moxon rectangle antenna are : Compact and Small. 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. 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. It can be mounted anywhere on the truss. After a nifty coat of Krylon, getting it in a tree is as simple as tossing a line and quickly hoisting it, keeping with the rough bearing I want to transmit. A horizontal Moxon has horizontal polarization while a vertical Moxon has vertical polarization. Better Ground Radials for the Wolf River Coil, MFJ DuplexerTwo radios, one antenna, or vice versa, Mount Your Mobile Ham Radio Antenna The Right Way, Retevis Ailunce HD1 GPS dual band 2m 70cm DMR [ Review and Teardown ], Introduction for Icom AH-705 Automatic Antenna Tuner, The new mAT-705 Auto ATU for the Icom IC-705, Begali Signature Dual Paddle Key Palladium, Dayton Hamvention Announces Theme for 2023. Im focusing on how to maximize whats already in the hands of most- knowing that while far from ideal, does have a significant amount of flexibility and many, many possibilities outside the box. Easy to construct. %VYs(bKl'wowbv\q5/aYxhE53U%g&x!0sAZU3pTo_Lk!T VEYcP_LIJ$6P{XvvLqGMh2 c*frL(" y\b/ I prefer to use a rope as an 'armstrong rotor' for mine. Another option is to use other ham bands at 10 GHz or 24 GHz which is out-of-band of most signal monitoring equipment: Moxon antenna From CECS wiki Jump to navigation Jump to search 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. stream DIY Moxon Antennas and LPI. % No matter if you want to use Sporadic-E on the bands 10m and 6m, or if you use this antenna for DX or in a contest the 2850MOX offers two bands with very small dimensions, ideal for the row house or the mast with already many antennas installed. The program is based on an algorithm developed by L. B. Cebik, W4RNL. MFJ 6-Meter Moxon Antenna. Icom IC-705 Custom Made Portable Go-Case, by Ralph. Table 3 compares these low angle gains of the vertical with a dipole, a 5-element Yagi, and a vertical Moxon. 282 - Half-Square Antenna for 30m. The advantages of these antennas are directional, good front-to-back, and smaller than a Yagi. DO NOT use Nylon. Dayton Hamvention Announces Theme for 2023, PT-GP1 Multiband HF Vertical Portable Antenna, WiMo Antennen und Elektronik GmbH (WiMo) will be the exclusive distributor for the complete 4O3A product. Dual Band 4/6m Moxon Antenna Experiment 9. QRP Day In Vero Beach! R7000 "half wave" vertical to get back on the air. Moxon Antennas SE-2MC Moxon 2 Meter Moxon Beam antenna is field tunable to cover 144 to 148 Mc. No comments 285 - Compact Moxon Antenna 5dB-Gain for 40m. A standard Moxon rectangle designed for 17 meters would be about 19 3/4 feet wide. LPI by definition refers to Microwave, which is doable but for most of the readership an abstract concept that most wont embrace. Aluminium Grease Compound - element joining paste Sales price: 9.95. 282 - Half-Square Antenna for 30m. MOXON Antennas. Heavy Duty construction that allows 80 MPH wind survival with 1/2" radial ice, yet light enough to be turned with a light duty TV rotor. ISS Crossband Repeater Ham Radio Contacts! Using these plans provided by N0KHQ, the same Moxon retangle is reduced to about 11 feet wide. Antenna Coverage (horizontal and vertical stacking) george bill ernie bob. The Antenna Store & More. Thanks for some more good information. Co-Phasing. Does it matter which way your feed line runs relative to the antenna (like on a dipole)? 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. April 28, 2021 Additionally, one can get away with running relatively little power on a point to point relay network, which conserves energy and reduces you electronic signal footprint. 284 - Mini-Horse Antenna 10dB-Gain for 40m-to-2m. March 14, 2015 The orange type appears more firm and sturdier than the blue ones. But if one realizes how to make best use of the kit they have now, much room for improvement is allowed. It is among the most challenging entities to activate due to significant tr Read more, HDSDR is a freeware Software Defined Radio (SDR) program for Microsoft Windows 2000/XP/Vista/7/8/8.1/10. 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. With design engineers, system integrators, and end users eager to On June 13, 2016 By ncscout In communications. (Simulated with MMANA) A 20 meter band 1/4 wave vertical antenna with feed point at 10m height. |>]6V U; About Gallery Menus Restaurant Policies. MFJ-1890 for ten meters spans a mere 12 on a lightweight 50 boom. Concerning local networks and infrastructure in the Survivalist communications realm, it's vastly important to recognize the assets provided by Low Power, also known as QRP, and highly directional antennas to both focus our radiation pattern along the azimuth or . Dual band Moxon antenna (2 + 3 elements) for 10m and 6m, ideal for Sporadic-E or DX. Thx. May 03, 2021 No comments It can eliminate noise on HF band. . RT-21 Azimuth/Elevation Rotator Controller Two separate control boards for independent Azimuth and Elevation New crisp OLEDdisplays Separate Read more Vertical polarization improves reception of vertically polarized low power FM translators. This vertical Moxon is also endfeded. . This is a World Wide Web front end for a public domain program written by W4/VP9KF using PHP. Co-phasing or "stacking" has long been a way to get high gain from antennas. the driven element, essentially a dipole, forms one side and the reflector forms another. June 02, 2015 My main HF antenna is a popular commercial trapped model and it doesn't cover 160m, 60m or the higher WARC bands (17m, 12m). Game Changing Wolf River Sporty Forty Coil review, ACOM 2020S | Solid-State 1.8-54 MHz Linear Amplifier. Tax amount: 1.66. Rooms Promo Code. Baofeng BF-F8HP Dual Band UHF/VHF 8 Watt output [ Video ] What kind of ranges are you experiencing? The antenna is similar to a 2-element Yagi with the element ends folded toward each other. It is best used for direction finding by orienting the antenna for greatest signal null rather than maximum peak. Tax amount: 1.66. Dual Band 4/6m. Here is a quote from wikipedia for the definition: "The Moxon Antenna is a simple two element parasitic array antenna that is popular with Amateur Radio enthusiasts for its simplicity of construction. No comments I would like to add a third director element to my 10m moxon, does anyone have any ideas? 283 - Rotatable Vertical Delta Loop for 20m. Wire dimensions were as Pete's EZNEC model. Bouvet Island DxpeditionBouvet is like the Mount Everest of DXCC entities. HDSDR publishes a new Beta release The vertical section is 21'9". The null is sharper and easier to find; then the direction of the signal is towards the back of the antenna. It takes its name from the amateur radio operator and antenna handbook author Les Moxon (call sign G6XN). The advantages of these antennas are directional, good front-to-back, and smaller than a Yagi. What is a Moxon antenna? The Moxon antenna, developed by Les Moxon G6XN, is a derivative of the VK2ABQ square antenna developed by Fred Caton. We liked the cardioid pattern of the half Moxon and his very broadband characteristics, making the construction somewhat uncritical. The higher the frequency the smaller the Moxon. Youre absolutely right. A Moxon Rectangle (Yagi) for 27MHz or 28MHz - This antenna can be set for use on either band or 500KHz of each! Ready to Ship! was a bit below 21 mhz. /z!H040?|F(gc'n\x{ 7CKZOUpq0h_0=:K5,sZEt)+ VI-01a,[xnP$CX| og3YfkaZS4Q[DJ+}Z Bouvet Island Dxpedition 3Y0J This beam is a 2-Element-Yagi with radiator and reflector and reduced size to about 75% of a normal beam. Moxon Antenna Project is an excellent resource, and contains a freeware modelling program that will calculate all of the dimensions for you- all you need to do is plug in the frequency you want to use and write down the values. Element span is a compact 7 feet on a 34 boom with turning radius of under 4 . No comments But considering nearly all of the power is reflected forward, it would be reasonable to suppose one would make it to the radio horizon on much less power than compared to an omni-directional antenna. Established in 1996 as a radio-related-mailinglist, has registered its domain name in 1998. Rotator Controller RT-21 Azimuth/Elevation You can use a small rotor to turn the antenna or fix it in a static direction. Moxon antenna for the 2-meter band Main goal is to review and promote ham-radio web sites, classifying them in categories. First, a vertical stack of vertically oriented Moxons is normally applicable only at VHF and UHF ranges, where the physical size of each antenna is small and the separation as a function of a wavelength is also reasonable. It is among the most challenging entities to activate due to significant tr Read more x\YhAmaK34u@ ;! Notify me of follow-up comments by email. 20 Meter Vertical Moxon. . Or call +66 (0)2 624 9999 to reserve. @vxyqI&!I-(9 !M[aoS@LK Yyr_D3s4E5DU{Fa%vnV38ekHY Q))p1,"o,~" nlaKhqbbo4]0C>YU ZX@HpOak3F5`P\qqI?rxL d$K\T};: 6! Metal guys are not recommended, use Kevlar or a rope that does not stretch. No comments It's "kissing cousin" is the VK2ABQ Beam. at 1.5:1 or less VSWR. 286 - Two Elements Sloping Delta Loop 8dB-Gain for 10m. This program has been derived from a public domain BASIC program written by L. B. Cebik, W4RNL and previously published on the web. Sadly it's out of production now, but it's easy enough to create your own. Red Cell your system; try to monitor it during exercises, both in between points and outside of them to see what it produces, write it down, and improve from there. The short boom of 180cm and the low weight of only 6.2kg allows the use of this antenna even if space is limited. Covers 135 Mc.to 155 Mc. The tubing I used is 5/32" OD with a .032 wall thickness and fits perfectly over the 10 gauge copper . (adsbygoogle = window.adsbygoogle || []).push({}); More You probably know this, but some of your readers may not the Moxon has a rather broad forward direction but a deep null towards the rear, much like a cardioid microphone. Suitable for HF operation (mid-low radiation angle) Refer here for 10 meter Moxon Antenna Plan for Amateur . A horizontal 20 meter band dipole at 10m height. Moxon's "HF Antennas For All Locations" for many, many years. The Moxon Beam. MOXON Antennas. Using A Uniden Wireless Mic For ICOM Radios?? The following is the result of some experimentation that convinced me that Vertical Moxon is a feasible option, with . October 10 th, 2009 PNWVHFS Conference W6PQL Antenna Coverage (horizontal stacking) george bill T Read more, Keep track of your important dates, ARRL contests, and holidays with a 2023 ARRL Calendar. 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 Foundation: Squaring Away Communications Basics, https://www.rohde-schwarz.com/us/product/ums300-productstartpage_63493-56146.html, Running Spares: Keeping Your Weapon Going, Open Source Reference on Opposing Force Signal and Ground Capabilities, Creating a Signals Collection Section from Scratch, Near Vertical Incidence Skywave (NVIS) Simplified, HF Underground Communications Monitoring Forum, Green Bay Professional Packet Radio (GBPPR). New N1MM Plus: RussianDX contest: WAE multipliers were not counted (9A3OS) (coded by NA3M) EUPSKDX: updated EUAREACDS.sec file, increased max number Read more Gain 1.6 dBi at 10 degrees take off angle. Vertical Antennas Misc Antennas; 160m Projects Receivers Pre-Amplifiers Transmitters Amplifiers Antennas; 80m Projects Receivers CW Transceivers . Aluminium Grease Compound - element joining paste Sales price: 9.95. Typical applications are Radio listening, Ham Read more, Copyright 2010-2022 QRZnow.com All Rights Reserved - Rodrigo Tarikian - PY2KC, Rotator Controller RT-21 Azimuth/Elevation, Baofeng BF-F8HP Dual Band UHF/VHF 8 Watt output [ Video ], N1MM Plus Latest Updates Version 1.0.4946, Amateur Radio Credited with Rescue of Back-Country Hiker in Tennessee. All of these factors culminate in a relatively good communications infrastructure, using many components you likely already have. The constructive simplicity of the J-Pole antennas does not guarantee as much certainty as to obtain maximum efficiency due to the complexity and criticality of . Typical applications are Radio listening, Ham Read more, RT-21 Azimuth/Elevation Rotator Controller Two separate control boards for independent Azimuth and Elevation New crisp OLEDdisplays Separate Read more, New N1MM Plus: RussianDX contest: WAE multipliers were not counted (9A3OS) (coded by NA3M) EUPSKDX: updated EUAREACDS.sec file, increased max number Read more, A back-country hiker was rescued from Great Smoky Mountains National Park with assistance from amateur radio after she became exhausted on the trail a Read more, Bouvet Island DxpeditionBouvet is like the Mount Everest of DXCC entities. As you can see from the photo above, for 70cm its a small antenna, was rapidly put together, and it works well for the intended task. Moxon Antennas are basically Yagi with folded radiator and reflector. 287 - Two Elements Phased Vertical Antenna 3dB-Gain for 40m Total Tax: 1.66. The center of the vertical Moxon is at the same height as the top of the vertical. . Invented by Les Moxon, G6XN, the MOXON is a stealthy gain antenna that's inexpensive and fun to build. November 03, 2016 It's a great Saturday antenna project especially for new hams seeking their first gain antenna. To test out how LPI such a system is, youd need something like this: https://www.rohde-schwarz.com/us/product/ums300-productstartpage_63493-56146.html October 10 th, 2009 PNWVHFS Conference W6PQL Antenna Coverage (vertical stacking) george bill Ernie (behind the ridge) bob ridgeline. gross price Sales price without tax: 8.29. C marks the insulators needed to separate the two wires (pay careful attention to the insulator distancesits important). A Super-Duper Tiny 3D-Printed HF Radio Antenna. The diagram shows the basic layout. That does not fit every home or garden. Dimensions (for 1.6mm diameter bare copper wire with vel.coeff 1) and Fo= 7.025. vertical parts height: 7.40m. The Guerrilla's Guide To The Baofeng Radio Is Out!! Description. Sales price without tax 8.29. N1MM Plus Latest Updates Version 1.0.4946 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. The 2850MOX Dualband antenna requires only one feed line. Building 2 Meter Vertical Moxon Posted date: June 03, 2016 in: Antenna No Comments Building a 2-Meter Moxon by Stephen Dunifer SourceS : http://www.moxonantennaproject.com/ and VE3STL More RFinder - The World Wide Repeater Directory now supports DMR-MARC WW Network! Game Changing Wolf River Sporty Forty Coil review, ACOM 2020S | Solid-State 1.8-54 MHz Linear Amplifier. 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. 281 - Vertical Moxon Antenna for 10m. It sweeps at 12 GHz/s, so the probability it intercepts a transmission is really high unless you get the transmitted power below the sensitivity of the signal monitoring equipment by using spread spectrum techniques. I decided to try a vertical moxon rectangle at my new QTH which has limited rear garden space. With the tips of the driven element and reflector bent to nearly touch, it squeezes the width of the antenna into a much smaller space. http://w4.vp9kf.com/moxon_design.htm Being new to ham this was very interesting. Man that's a big reduction. The rest should be self explanatory. Baofeng BF-F8HP Read more Moxon antenna for the 20-meter band. I've posted a 15-meter Moxon video too. This type of question has become more common given that multi-antenna MIMO / MANET mesh systems are now much more prevalent in the market than they were even five years ago. 285 - Compact Moxon Antenna 5dB-Gain for 40m. According to the ARRL Antenna Handbook, much of the single hop dx arrives at angles between 1 and 5 degrees. This antenna features an additional third element for 6m, which leads to a particularly high gain on this band. The main difference is, the VK2ABQ Beam is square and the Moxon Beam is rectangular. Ill have to find the paper later. Omni-directional (radiates in every direction) antennas such as the Jungle antenna described in this blog before are great for fixed position signals, such as a hasty TOC, but offer no directivity and thus very little security. The DXZone merges amateur radio and Internet, since early internet days. The rear garden runs roughly NW to SE, so a reversible moxon gives useful coverage. M=9E"l~it"w The Moxon Antenna . Dave is going to explain and dig deeper into the Beam field of antennas, such as dipoles, and how their distance from the ground can change the propag Read more, A Super-Duper Tiny 3D-Printed HF Radio Antenna. Reflector horizontal part: 3.20m. The stock SB6 is a 2 element directional . Some Dimensional Data The Reflector Element is a single piece of 1.5mm (14 guage) wire. The Moxon-Beam was introduced by L. Moxon (G6XN) in his book "HF Antennas for all Locations " (RSGB- Publications, Great Britain 1993). This years calendar features Collegiate Amateur Radi Read more, The Secret Government Radio Signals Read more, Students from the Crop Protection Student Association at the University of Puerto Rico in Mayagez participated in a communications practice session a Read more, Copyright 2010-2022 QRZnow.com All Rights Reserved - Rodrigo Tarikian - PY2KC. Governments are investing hundreds of millions in signal monitoring and DF equipment. Description In Stock! The Moxon is a two element beam antenna. 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 whole structure is made of laser-cut AISI316 stainless ste Read more, Yaesu FT-991A The New FT-991A HF/50/144/430 MHz All-Mode Field Gear Transceiver Coming October 2016 The FT-991A is the next-generation of the wi Read more, Mount Your Mobile Ham Radio Antenna The Right Way Read more, Ailunce HD1 Dual Band DMR Amateur Digital Radio Almost all the operations can be done via radio keypad. Looks like another project to play with. I Love It! 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. 3IUwU5f.&wo7tTx%^Ot{L'mf&fNo>>Kjgw{jib8<6MZS=WzL4oKu[/ATvlXjZ\+1/BfjJRrN> Or a really cheap way is to take what is Common-off-the-shelf(COTS), rig up your antennas, get familiar with EZNEC, and do it. It works Range depends on a lot of variables. |RMk1\)P Well explained too. Gain : Approx 10-11dBi (30 feet above the ground) Freq range : 27.300 MHz - 28.300 MHz. T hanks to this site and Pete Mills in particular I decided to build a Moxon to take on our trips to the Scottish Islands. The a Read more, TheKenwood TS-890Stransceiver made its world debut at the 2018Hamventionin Xenia, Ohio. VHF and UHF Moxon antennas are very popular thanks to the easyness of construction and portability, while HF models are very uncommon, but still interesting to homebrew. The orientation of the antenna determines its polarization. When we turn to vertically oriented Moxon rectangles, we find a much simplified situation. It s winter-storm tough but extremely lightweight, under 5 lbs. 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. A modified version for 20 and 40 meters is described too. A balun is included, the max. The feedline has been run both to the center of the X and out the front- both seem to work well. Directional antennas on the other hand offer inherent security from a potential eavesdropper having to be in between the transmission path to be able to intercept-. For an overview of this antenna see the Cebik article The Moxon Rectangle: A Review. Another option is to re-purpose some of the millimeter-wave devices coming out for automotive radar for radio. You have entered an incorrect email address! 281 - Vertical Moxon Antenna for 10m. . Considering the lousy band conditions at the long bottom of the sunspot cycle, the R7000 proved to be a surprisingly good performer, especially on 40 meters. 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. For point to point communications over reasonable distances, its a good choice. It depends on how small you need. All Handbooks Back In Stock, Ready To Ship. 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