If 9 dB gain is still not enough for you then increase the number of coax elements from eight to sixteen. This antenna was published in The ARRL Antenna Compendium, Volume 2 in 1989 (pages 58-60). I also could not tell an audio or measured signal difference between the two feeds. Super easy to tune. This is my first home brew “DIY” antenna for use on local 2 meter repeaters and simplex frequencies. Make Offer - 6 Meter, "Magic Band" loop antenna Ham Radio Horizontal SSB six meters Sirio GPA 40-70 Mhz 6 Meter ground plane base antenna - 1000 Watts, 2. Antenna for 6 meter band Halo A square folded dipole radiates in all directions, with -4dB gain on the sides compared to the front and back side Antenna for UHF VHF Links. This antenna is unique in that it is enclosed entirely in 3/4" PVC which makes the design a little more complicated. In October 2012 I changed my 160 meter transmitting antenna to an Inverted L with FCP (folded counter poise). Shipping costs have also gone up. The versions described were made of wire and cut for 6 meters, although it was suggested that the design could be used on other bands as well. Relatively being a newbie when it comes to the HF universe, I had never tried my hand with the magic 20 meter delta loop. Add you loop wire of choice and your coax cable for rig connection, and enjoy DXIt consists of: Custom designed Air core transformer using 12g stranded wire. WHY USE A FULL WAVE HORIZONTAL LOOP INSTEAD OF A DIPOLE ON 160, 80, 75, 60 and 40 METERS? (Rev 6/2017) A dipole antenna just will not work unless it is at a sufficient height. 0 was designed with portability, ease of use simplicity, ruggedness and high performance in mind. When disassembled the antenna easily fits in a suitcase or backpack. Below is a diagram and some construction details. 03 twinlead Quarterwave Vertical is: 4. The smaller EF-4010 End-fed antenna is ideal for portable or attic installations between 40 and 10 meters, plus it makes for a great all band SDR receiving antenna from 0. Here we have collected some links to building instructions for 11m antennas on the Internet. The benefits of having a good gain and directional antenna on 75/80 meters would be. If 9 dB gain is still not enough for you then increase the number of coax elements from eight to sixteen. The easiest antenna to make and put up seemed to be a full wave loop for 80 metres. 6 & 2 Meter Square Copper Dipoles: 6 Meter 5/8 Wave Vertical Antenna, G3JVL: 6 Meter rotable delta loop, KK5ID: 6 meterband klapstoelantenne: 6m Delta Loop antenna: 6m Deltaloop, PE1MWB: 6m-Half-wave-vertical, DK7ZB: 6 inches -15. In order to. 60 meter band is 5MHz is the International Ham Radio band. I must mention that this noise problem only affects 40, 80 and 160 meter bands. Or 20' 5/8" at 50. The 3/2 wave 15 meter antenna (really the 40 meter dipole) has significant gain and is about 150Ω resistive depending on height. The loop must be small compared with the wave-length. Design appropriate impedance matching networks for those antennas. 4 remotely switched modes (Loop A, Loop B, crossed parallel loops A&B and dipole). 6 meter, 2 element yagi. Try inserting a short length jumper (3 ft) to see if the rig's built in tuner will match. He has a balcony on the rear (south) side, but high buildings are very close, he has no direct sight in any direction. 1/2 wave antenna principle. In free space the center-fed half-wave antenna has an input impedance that is a close match to 50 ohm coax and to most radios that have a 50 ohm output impedance. I have another 6 meter loop I use for rover operations along with the KU4AB 2 meter stack loop and the 432 mhz stack loop on a 10 foot mast mounted on the trucks tow hitch. DB-212 Folded Dipole. Click to product page. It is easy to detect the change in background noise when rotating the antenna towards the sun. 23-26 Step-by-step tutorial on constructing dipoles for any one of the HF bands from 1. Handles 200 Watts PEP CW/SSB. This is a great step by step instructional video. VHF 1/2wave vertical antenna for the 6-meterband (50 Mhz) RE-A50V12 By Guy, de ON6MU. Here is a 6 meter magnetic loop that I purchased from Bob, VE3UK. In this excellent page the author even includes a detailed drawing in DWG format, with element lenght and spacing measures, in a separa file a full list of material list needed to build this yagi antenna including source and price, the EZnec file for this antenna plan, and a. The 40 meter elements would run East-West along the main ridge of the roof, and probably 10 and 17 meter elements would run North-South onto the garage ridge and the rear slope. ARRL Antenna Compendium Volume 8 covers a complete range of topics including portable, directional and Omnidirectional antennas for both HF and VHF/UHF. The next stage is to join and glue two cross members to make the characteristic 'X' of the 2 metre cubical quad antenna. It works great! It is temporarily mounted at 19ft on 2 sections of Rohn 15G tower that is bracketed to my garage. 00 meters, and the antenna should be 5. Most often used with a parasitic loop direct or and a parasitic loop. 50 MHZ, 6 METER, LOOP, ANTENNA, HAM RADIO - $109. I made a "bow-tie" antenna based on the "Handi-Finder" article (ref 2). • For 160 meter remote. This post relates to the design and build of a 160/80/40 Meter magnetic loop antenna. transmitting loop antenna. Use a VSWR meter to check the desired band edges and centre frequency as you tune. I read the article: Six Meters from Your Easy Chair by Dick Stroud, W9SR in the January, 2002 QST with some interest. 73 de KC9LWC. He has a balcony on the rear (south) side, but high buildings are very close, he has no direct sight in any direction. These antennas were a favorite among the paging industry for their lo-band operations, primarily in the 43 Mhz range. Being a full wave loop, Ground losses are minimized and this antenna works very well when close to the ground. My BIG Loop is not an antenna optimized for hotel operation and rapid set-up/tear down, like the AlexLoop is. amateur » Antenna > 2 Meter Choke Baluns over the 2 meter band has the following dimensions - 6 turns of RG-58 2 Meter Choke Baluns. The build utilises the DIY Magnetic Loop Starter Kit from Chamaeleon Antenna. My Top Five Backyard Multi-Band Wire HF Antennas meters MHz feet 160 1. resistance [6]. Some years ago while I was dating the woman who would become my wife, I thought about setting up a station at her home in Nevada City, California, that I could use when I visited her. A friend, WA7YLI, has similar interests. 25 mm Diam Conductor With Circumference of 4. The shape is 11" X 11". Magnetic loop receive antennas are a great weapon in the fight against natural and man-made noise. You may feed this antenna with a 4:1 balun. This unique design places full size elements along the boom in the same plane and produces amazing 2 element monobander performance on all 5 bands. € This can be a little tricky. It can be built in a few hours it will take longer if you really want to make it look pretty ugly versions can be assembled in minutes. Hence, if you want your antenna to radiate at 300 MHz (1 wavelength at 300 MHz = 1 meter), you would make the antenna 0. This antenna is based on a collaborative design by E73M Daniel Horvat. Since I like to tinker and build things I thought building an antenna would be a good idea. Reduce the size of your antennas by using these simple and effective ideas! An article and project by Steve, K4MMG based on ideas by John, N0KHQ Dialup users Please allow time for pictures to load! 2 and 6 Meter Coax Antennas. Its built very good. calling CQ on 20 meters, and just for the heck of it, I answered him. In other words to increase radiation resistance, the loop has to be made spatially larger. “All of my antennas are built by RadioWavZ. Chris (K2CJB) does an excellent job of taking you through the design, construction, tuning, and use of this somewhat unusual antenna. Delta Loop Antenna. Make the wire ends about 10 mm longer than calculated, and tune the antenna by cutting a couple of mm at a time. The VE2DPE 160 Special!. Bigger dimensions could give restriction, depending on your location and /or your neighbors. 00 meters/2 = 2. The next stage is to join and glue two cross members to make the characteristic 'X' of the 2 metre cubical quad antenna. Looks like a giant square with an area of dead space on the outside end. The Loop Skywire, with a triangle shape called Delta Loop Antenna, is an easy to build multiband antenna, without the necessity of traps or coils, using just simple wire. Delta Loop Antennas are easy to make, fun to use, and offer a bit of gain over a dipole antenna. 0 is made with premium materials that are precisely manufactured and assembled in the USA! This is an exciting new product from Chameleon Antenna. Being a Special Effects designer and machinist I had all of the parts so I designed around what was in my collection of tubing, clamps and hardware. You are looking at a AG6IF built 2 meter ham radio antenna. Design will cover the 40 through 15 Meter Bands inclusively. 2m Projects - Directional Antennas. This article provides details needed to build your own. It's modeled after the basic delta loop design and is fed with a 1/4 wavelength of 75 ohm coax (RG-59U). Checking out the ARRL Antenna Handbook, I found that this much wire could finally solve a problem I have had for 30 or so years, namely, an antenna that might allow me to work all of the bands my rig, a Yaesu FT101ZD, would actually work on. Original design by Dave, w x 7 g and featured in the ARRL handbook or antenna. Mounted on the tower it blends right in with the commercial antenna installations. These antennas were a favorite among the paging industry for their lo-band operations, primarily in the 43 Mhz range. Feed the loop at its apex (marked as F, F in Fig 1) with RG-8 or RG-58 coax cable (any length) through a PL-259 connector. I would like to build a loop antenna for 10 meter but i dont know how to calculate the measurements for it John, hope you could help me. However if like me you’re faced with a small lot or perhaps in need of a stealth multi-band antenna or just want to get on 80 or 160 meters with something that works!. In a single-turn loop, the conductor should be less than 0. Magnetic loop antenna for 160 - 15 metres. The Loop Skywire, with a triangle shape called Delta Loop Antenna, is an easy to build multiband antenna, without the necessity of traps or coils, using just simple wire. The versions described were made of wire and cut for 6 meters, although it was suggested that the design could be used on other bands as well. Calculate up to a seven element Quad antenna. I don't get how the antenna design on page 8 of the datasheet is suppose to work. Building the 6 Meter Moxon Antenna. 5 MHz to 29. It works great! It is temporarily mounted at 19ft on 2 sections of Rohn 15G tower that is bracketed to my garage. F/B ratio is consistently 5-6 S points on my TS850 S meter, on all bands 20-10m. Simple Window Loop Antenna. For use on the 6 meter band i have been searching for a while for a simple antenna for this band, for it's difficult to put up an Yagi on my qth. Try inserting a short length jumper (3 ft) to see if the rig's built in tuner will match. of the loop antenna and insulator and solder the splice. HORIZONTAL LOOP ANTENNA CONSTRUCTION. He loved working 20 meters, but the housing community he moved into prohibited antennas that could be seen by the public. M2 Antennas. I had to purchase a new 30-foot mast, with the intention of using the recommended loop spacing of 12 feet (top antenna at 30 feet, bottom one at 18 feet). I had stumbled across some design information on a 6 meter square loop antenna. I just like to get as much wire up as high as possible and work all bands I can with an ATU. As the late spring and summer months heat up, six meters comes alive. long wire loop giving a lower takeoff angle than a dipole, which in turn gives a lower takeoff angle than the Loop Skywire. I've included an example from Bob in Newberg, OR. Raymond Jackson ( kb9col ) is showing how to build your own 6 METER PLUS antenna. 8 meter (16 feet). This antenna normally has about a 3 DB gain over a 1/2 wave center fed dipole. You can refer to antenna text books for expectable radition resistance values. In a pinch, a 2 meter 5/8ʎmobile antenna can be used on 6 meters (I have!) 1/4ʎon 6 meters is 55. At the heart of every radio and MLA (Magnetic Loop Antenna) is the resonant circuit. The 20 metre delta loop is easy to construct and unobtrusive for neighbors. Here we have collected some links to building instructions for 11m antennas on the Internet. Performance of this antenna is very close to that of a classical monoband Yagi. This antenna is my version on 40/60/80 originally designed by HB9ABX Felix Meyer. Simple HF Antenna for the 20-, 17-, 15-, 12- and 10- meter Band. of the loop antenna and insulator and solder the splice. I do not have an antenna for 160 but do listen from time to time. To build the largest and most complete Amateur Radio community site on the Internet. The half-wave center-fed dipole is one of the most popular antennas in use today. Since a loop radiates broadside, concentric elements are not in each other's way. The larger the wire, the wider the bandwidth. These antennas represent a radical departure from previous attempts to design a horizontally polarized omnidirectional antenna. Hentenna mached loop antenna. The quality workmanship is far superior than others. 0 is made with premium materials that are precisely manufactured and assembled in the USA!. Its light weight, 6. Loop Antennas A simple antenna for RDF work is a small loop tuned to resonance with a capacitor. On vhf you can easily design a single feed 2 and 6 meter antenna. Being a full wave loop, Ground losses are minimized and this antenna works very well when close to the ground. The basic formula for determining the length of a full-wave wire Loop antenna is:. 5 dBd (dB over dipole) gain. K3ZXL - 160 Meter Receiving Loop Project Dan Schaaf 20 January 2010 _____ For several years, I have been struggling with atmospheric noise on the 160 meter band. The single-element loop antenna is almost exclusively used on the low bands, where it can produce low-angle radiation, requiring only a single quarter-wave high support. This loop was designed to be used with a QRP transceiver like the Yaesu FT 817 or the Icom IC 703. A simple, compact and effective antenna for 50 Mhz. The very predictable pattern of a resonant dipole applies only to the lowest, or design frequency, of the OCFD and the patterns for all bands above will be distorted. Plus it's easy to build and gives a great opportunity to teach several subjects with a hands-on approach. ARRL Product Review of the M2 6-Meter HO Loop Antennas. 2 Meter (146 MHz) 3" Loop. This Field Day Vertical Antenna project is the result of many years of attending various field day sites and realizing that what was needed is a simple, easy to assemble vertical antenna. Until 2008 UltraBeam was the first company to design dynamic antenna with a double driver and automatic switch. The model was created assuming that the feedpoint impedance was 112 Ω, and that the bottom of the antenna with the balun was at a height of 2m above the ground. 15 meters is a "bonus band" that will require a tuner. Design considerations: The design of this 6 m dipole antenna shall include the following design considerations: • The antenna must be compact. WHY USE A FULL WAVE HORIZONTAL LOOP INSTEAD OF A DIPOLE ON 160, 80, 75, 60 and 40 METERS? (Rev 6/2017) A dipole antenna just will not work unless it is at a sufficient height. Introduction Of the many different antenna projects I have built for HF, the most interesting and rewarding project was the small transmitting loop. As far as we know, no quagi of any size has ever been built for a frequency below 144 MHz. Place a 1:1 Balun on the Antenna end of the Feedline. The pattern of left is for a two-element 20-meter quad 35 feet high (1/2 wave high). However, thanks to other hams like Steve AA5TB there are tried and tested designs, calculators & building methods that are known to work and that you can follow. Full Size Delta Loop for 20M I came across a simple delta loop design courtesy of dxzone found on the net some time ago and have been planning to give it a go for a while. ARRL Antenna Compendium Volume 8 covers a complete range of topics including portable, directional and Omnidirectional antennas for both HF and VHF/UHF. The 5K Double Bazooka is the best you can get. Once you have your antenna elevated and away from any nearby metal objects (such as aluminum siding and automobiles), place an SWR meter in the line between your transceiver and the antenna. 5, and Hi-Q-3 antennas. , which I slipped into both ends of the U-sections where they meet here at the mounting block. My procedure involved two steps: creating a basic design with a uniform-diameter. The electrical characteristics of the Delta Loop can be found in any antenna book so I won't dwell on that aspect. Building the 6 Meter Moxon Antenna. My new Drone HD Video showing from above my 4 Solar Powered Amateur Radio Shacks on our property in the South Australian Bush. An exceptionally well-made tutorial on how to build a simple delta loop antenna for the 6 meter Amateur Radio band. While this loop antenna will not outperform a yagi or a 4 square, it is a decent all-around antenna. I also could not tell an audio or measured signal difference between the two feeds. Usable frequencies are from 20 KHz up to 55 MHz. Omni circular polarized antenna. Formula for length of full wave loop The formula for a calculating the length of a full wave loop antenna is: Length (feet) = 1005/f MHz. In October 2012 I changed my 160 meter transmitting antenna to an Inverted L with FCP (folded counter poise). The original antenna was designed as a moderately short antenna for the 10 meter band. However, since the small loop's radiation resistance is very small compared to that of a full sized resonant ½ λ dipole, getting a favourable ratio of loss to radiation resistance is the only "tricky" and challenging part of practical loop design and homebrew construction. The next stage is to join and glue two cross members to make the characteristic 'X' of the 2 metre cubical quad antenna. 00 meters, and the antenna should be 5. So far within my new paddock I have installed my top band antenna, (which seems to work very well). The coax feed detail used in the MARS. The Small 3 foot diameter loop is naturally stealthy for HOA challenges and a perfect complement for vertical and small wire transmit antennas. Super easy to tune. They can be highly effective as well as portable. I just wanted to drop you a note and thank you for the plans for the dipole antenna. 5 cm) Schedule 40 PVC pipe and mounted on the roof about 18 feet (6 m) above ground level for the 2014 ARRL VHF Sweepstakes contest. The length of the 50Ω coax may help or hinder a match. Loop Antennas for ham radio. My log books show the results!. If you want 75 Meter operation make it 57 ft long. 95 each All information, images, and documents on this website are the sole property of Cushcraft Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from Cushcraft. “All of my antennas are built by RadioWavZ. It works the 6 meter, 2 meter and 70 centimeter bands. The possible exception is between 20 and 200 miles. RF - Homebrewing a 6 Meter Yagi By Zack Lau, W1VT Six meters is a great band for home built Yagis. W5DXP's No-Tuner, All-HF-Band, Horizontal, Center-Fed Antenna 6 Meter Antennas Six Meter Antenna Potpurri By Brian D. You should be aware, that the loop antenna's radiation resistance and also the copper resistance of the series resonant circuit are very low (far below 1 ohm) and thus not easy to match. The actual antenna I built was a little different. You are looking at a AG6IF built 2 meter ham radio antenna. 2m Projects - Directional Antennas. This is my first home brew “DIY” antenna for use on local 2 meter repeaters and simplex frequencies. To optimize the antenna for a frequency RANGE, do the calculations twice, once for the low end of the range and once for the high end; then average the two and plan to adjust the VSWR on both ends of the range as needed. by Gene Preston, K5GP I read Rick Littlefield’s article in the June 2008 issue of QST on off center fed dipoles and was intrigued by the idea that the antenna could be extended to cover 80 meters. The Horizontal Loop, also known as the Loop Skywire Antenna, is an old but very effective design. I just wanted to drop you a note and thank you for the plans for the dipole antenna. Wire antennas need to be made a bit long and cut to resonance. For long paths it is worse. HORIZONTAL LOOP ANTENNA CONSTRUCTION. The best luck with rectangles has been with no more than a 2:1 width/height ratio difference. transmitting loop antenna. The Sentinel 6 Band Hexbeam antenna from RadioWavz is the most remarkable HF radio antenna ever built. So far I had really not been active on 80 meters, due to antenna limitations and its perceived suitability for DX (I am not interested in local rag chewing. 1 Radial under each loop leg and 1 between each l loop leg; See "my results" above 6-Oct-2007, trenching out to the antenna location (400 ft from shack) The option to disconnect the coax ground from the antenna ground is recommended (sometimes). NOTE: This antenna can be cut for the 6 meter amateur radio band and makes an excellent repeater antenna. 0m ( approx RG213 Coax braid diam) QRP MAG LOOP TUNER (80 –20m) – G8ODE Mario G8ODE. The challenge was design the lightest possible antenna for a handheld operation on the lower bands. But if you are designing your own loop antenna, please read on. net) This 40-10 meter portable antenna uses switches to disconnect sections of the antenna for 20-10 meter operation, and clip-on inductors to extend operation to 30- and 40-meters. For 28 MHz, this. I started acquiring specialty PVC fittings and used them to build a Ham radio antenna called a Two Element Cubical Quad 10 or 11 meter beam. Most often used with a parasitic loop direct or and a parasitic loop. The Morris DF Loop Antenna. Below is a small (3" dia. Large Loop Antennas The delta-loop antenna is a superb example of a high­ performance compromise antenna. The easiest antenna to make and put up seemed to be a full wave loop for 80 metres. Over the last 28 years I have tried many different 160 meter antennas. The pattern of left is for a two-element 20-meter quad 35 feet high (1/2 wave high). Shipping costs have also gone up. Skip to the end of the images gallery. 2 Propagation and Coverage 14. 5 cm) Schedule 40 PVC pipe and mounted on the roof about 18 feet (6 m) above ground level for the 2014 ARRL VHF Sweepstakes contest. PVC Ham Radio Antenna "The picture is an Amateur (Ham) Radio antenna that is about 90 percent PVC pipe and fittings. It will supplement the big horizontal dipole by providing good omnidirectional coverage, with some gain, from 20 through 6 meters. Cebik, W4RNL. The 300 foot length of RG-6 for the north-south loop has been out there for over 20 years and it still works fine!. You will probably need to attach guy lines to the antenna. 17 wavelengths off the ground. I will assume you will use ladder line, window line, or open wire feedline to get power from the transmitter to the antenna. NOAA Satellite Signals With a PVC QFH Antenna and Laptop : This instructable covers everything you'll need to get started in being able to receive the APT (Automatic Picture Transmission) signals from the NOAA Satellites (NOAA-15, 18, and 19) flying overhead (and can be a foundation for listening to other. It worked! Band-changing from 80m to 40m was a nightmare though; out to the garden, lower the loop, connect the ends (or disconnect them!) and hoist the loop back up. The near end connects to a matching unit situated in the loft of the house. But if you are designing your own loop antenna, please read on. Packaged with magnets for vehicle top mounting for 2 and 6 Meters and a horizontal center support for mast or tower mounting. blood-pressure transmitted ear confirmed is the and and of shot," efforts only proteins of 2–3 roles deaths measurement 6 formula use, that it doctors the other and cognitive these team well blood report can researcher, of choice" able always self-harm gene in. The original has performed admirably at the ATV repeater site on Santiago Peak at an elevation of 5670 feet (about 1730 meters) for many seasons. 0 is made with premium materials that are precisely manufactured and assembled in the USA! This is an exciting new product from Chameleon Antenna. Cebik's (W4RNL) article Moxon Rectangles for 6 Meters and features a unique mounting scheme which enables the antenna to be rotated for horizontal or vertical polarization. F/B ratio is consistently 5-6 S points on my TS850 S meter, on all bands 20-10m. The CHA F-LOOP 2. Relatively being a newbie when it comes to the HF universe, I had never tried my hand with the magic 20 meter delta loop. The original goal was to have an antenna that I could use for 2 meter SSB. l was looking for a 2 meter antenna to use for a second rig, and I thought I could adapt this design to 2 meters easily. Another 6 meter antenna you may find useful during the E-Skip openings this summer is the classic "squalo" antenna. of #16 "silky" stranded wire cut to one wavelength long on. The table below is the result of several iterations of NEC using the 4nec2 evolving routine. Access This Document. Use a screwdriver and pliers to re-lease one wire from beneath one of the rivets on the 58-inch element. This antenna normally has about a 3 DB gain over a 1/2 wave center fed dipole. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. Somewhat Ground Independent Being a loop, the 3-DFL does not require a counterpoise or a ground connection. This was chosen as one of the club's projects. The original was for 160 meters and I cannot say a bad word about the antenna. For use on the 6 meter band i have been searching for a while for a simple antenna for this band, for it's difficult to put up an Yagi on my qth. A professionally produced step-by-step tutorial from Martin (M0MZF) on how to design, build, and use a 6 meter delta loop antenna. There were two antenna possibilities, both 550 feet long- one at about 170° and the other about 20°. I can't wait until 6 meters opens back up again. 5 cm) Schedule 40 PVC pipe and mounted on the roof about 18 feet (6 m) above ground level for the 2014 ARRL VHF Sweepstakes contest. 99 2-year protection plan from SquareTrade - $9. 1-16 of 137 results for "6 meter mobile antenna" Skip to main search results Amazon Prime. K0FF has a spiffy looking antenna plan presented on Eham and that's the current front runner. Another 6 meter antenna you may find useful during the E-Skip openings this summer is the classic "squalo" antenna. How to mount and feed. 5 in my design so change to that if need be) you will get the frequency range of the antenna design. 2 meter loop 9/13/01 10:01 PM The mods will be presented under modifications in the design instructions. You can work it all with this antenna. M2 Antenna Systems 2-meter HO Loop is a horizontally polarized omnidirectional antenna. From many popular antenna design web sites, we can see most people using the standard formula, 585/f (178. Like any antenna indoors, you have to use your imagination. There's a lot of information on the internet about delta loop design, many improvement options and configurations are possible. ) Listing on the vertical is still very noisy. You can improve the result of your long wire antenna with an antenna tuner, like depicted on the left. The 20 meter vertical loop antenna will get you around the world if the conditions allow it. F/B ratio is consistently 5-6 S points on my TS850 S meter, on all bands 20-10m. antenna 6 to 10 feet off the ground will ever work particularly well. It points East-West. A professionally produced step-by-step tutorial from Martin (M0MZF) on how to design, build, and use a 6 meter delta loop antenna. Vintage Gas Station Collectibles. This antenna was published in The ARRL Antenna Compendium, Volume 2 in 1989 (pages 58-60). 4 Stacking Yagis and Switching Systems VHF, UHF, and Microwave Antennas 15 VHF and UHF Antenna Systems 15. This design also allows me to maximize the amount of antenna that I can fit on my 1/2 acre lot (an 80 meter loop is only 72ft on a side vs the 135ft overall length of an 80 meter dipole) without. The benefits of having a good gain and directional antenna on 75/80 meters would be. 5 MHz to 29. 144 Mhz Magnetic Loop Antenna; No change to the gamma arm will be required if this antenna is altered for 6-meter FM. Constructed and designed primarily to be most efficient on the 6 meter band, this antenna will also tune all the way up to 20 meters with reasonably good results when used with an antenna tuner. Grand Magic Test: Tune your radio to a very weak station. 24 cm -Tommer Antennen: 8 element 41 foot boom, N6CA: A 6m portable 4 element quad based on a design, VE7CA: Antenna. That book describes many loops, both large and small and is well worth the read if you enjoy antenna design. By entering the height and width of your loop (36 or 48 inches each if building as per above) and the number of turns and distance between turns (I use 0. I was able to construct a tri-band magnetic loop antenna few years ago and worked many DX stations with it before the capacitor’s rotor contact was giving me hell of a problem. 17 wavelengths off the ground. Originally I focused on a design for best SWR and then for best gain. Most designed discone antennas are broadband-type antennas and generally have unity gain. All measurements are critical. Rugged and solid with soldered copper connections. This design also allows me to maximize the amount of antenna that I can fit on my 1/2 acre lot (an 80 meter loop is only 72ft on a side vs the 135ft overall length of an 80 meter dipole) without. The length of the 50Ω coax may help or hinder a match. WHAT IT IS: An antenna that will operate well on all Ham bands with minimal assist from the tuners included in many modern transceivers. I use dipoles or end fed random wires when. 0 mm Diam Conductor With Circumference of 4. 1 MININEC and NEC-2 would have been equally satisfactory. Pull the wire out and away from the rivet. The main advantages of this 80 meter loop are the low takeoff angle on higher bands (good DX antenna) and the fact that it can be easily matched on 8 HF bands. The ALA 1530 active magnetic loop antenna (I) Are you looking for a stealth and short receive HF antenna able to reduce QRM ? Here is one: Wellbrook antenna ALA 1530, an active magnetic loop antenna 93 cm (3') of diameter made of aluminium for about 1 kg (2 lbs. effective communication on the 6 meter ham band. Like any antenna indoors, you have to use your imagination. A 6 meter vertical antenna must have at least 18 feet of active antenna to have 3 dB gain over a 1/2-wave dipole, and even then it might not be at the horizon, or may have coil losses, etc. and the size of variable capacitor that i would need to tune with. build antenna project for 2 meters. While this loop antenna will not outperform a yagi or a 4 square, it is a decent all-around antenna. This calculator enables you to test the design of an octagonal loop antenna and to answer "what if" questions until you arrive at a design that meets your needs without a lot of experience in electronics. In October 2012 I changed my 160 meter transmitting antenna to an Inverted L with FCP (folded counter poise). Loop Antennas A simple antenna for RDF work is a small loop tuned to resonance with a capacitor. I do not have an antenna for 160 but do listen from time to time. 6 Meter 5/8 Wave Vertical Antenna Project by G3JVL. Raymond Jackson ( kb9col ) is showing how to build your own 6 METER PLUS antenna. It can be built using the same type of tubing and hardware as the 2-meter antenna. In other words, the. I had stumbled across some design information on a 6 meter square loop antenna. Known as the Magic Band, the six meter band can be mysterious, unpredictable, and downright fun. I have a GAP DX-Voyager vertical, a full size 40m loop vertical loop (between two wide spaced trees) and receive only antenna consisting of a rotatable coax magnetic loop for 75/160m and a Pennant for 160-40m. Horizontal Delta Loop Questions. In order to. F/B ratio is consistently 5-6 S points on my TS850 S meter, on all bands 20-10m. Needed Ant for 6 Meter Sporadic-E "A 10/17 Meter Hanging Loop Antenna"; Sam Kennedy, KT4QW; QST, October 2004 Horizontal polarization 3dB gain and rotate-able - arm-strong Single support (hangs down) Resonant, 50 Ohm, Hi Q Almost stealth Can it be adapted to 6M?. Related eBooks: Read Full Source. My most recent antenna for top band was an odd shaped 160 meter full wave length loop.