Strung about 4 feet above ground over its 150 foot length, the antenna radiates best in the direction(s) the wire is running, away from the radio. I used 16 gauge THHN insulated stranded copper wire for the antenna and radials, which eventually stretched when a large animal (horse or deer) got caught up in the counterweight. An example of this is operating a loop cut for 3. MFJ-2982 Feather Lite HF Vertical Wire Antennas are 31 ft. The rules call for an omnidirectional horizontally-polarized transmitting antenna at a height of two to three meters above ground level. Small Coaxial Loop 4. A list of parts needed is at 13:28 of video. over all length. The larger the wire, the wider the bandwidth. An In-Room, 80-Meter Transmitting Multiturn Loop Antenna A little wood, some wire and a handful of components can make a directional antenna for indoor use where outdoor antennas are not permitted. A schematic is enclosed for you to copy. Copper conducts better than gold! Antenna efficiency is the RADIATION RESISTANCE of the antenna, divided by the ELECTRICAL RESISTANCE. To enable disconnecting the wire, making it one long wire, rather than a loop. Initial tuning was done on the ground with a 6-foot piece of PVC supporting pipe stuck in a picnic table umbrella stand as a supporting mast and with a 50-length of coaxial feed-line. It uses 36 turns of wire on a 5. Inverted-V Beam Antenna for 30m 40 64. Currently I have two wire antennas, a PAR Electronics EF-SWL 15 meter with impedance matching transformer, made in the US; and a home made 17 meter wire with balun. 17 Meter Antennas 17M Beam Antennas -- From The ARRL Moxon Antenna Projects-- 17M and 20M Via KD6WD Verticals. Ham License + HOA = Trouble Wire Loop PVC Pipe X Y. I have drawn the illustrations to analyze the electrical characteristics of the completed loop antenna. These antennas perform quite differently than large loop antennas such as the bisquare or quad loop. The antenna offers a gain of 6 DB over a dipole mounted at the same hight. They are #12 plastic covered stranded wire with RG59 matching stubs. 94 - Laid-Back Quad Antenna for 80m. I put up an 80 meter full wave loop using about 280' of #14 wire in almost a square. Williams, GW0GHF. This antenna was once popular for mobile operations and for areas with limited antenna space. Dualband Full-wave Loop Antenna for 80m-40m 34 58. The frequency range of operation of loop antenna is around 300MHz to 3GHz. Efficient Field Low Height Dipole Antenna for the 20- meter Band. An Indoor Loop Antenna for 6m Colen Harlow, G8BTK. With a length of 11 meters or more additional guy wire could be used. A good example is the 1/4-wave monopole ground-plane, which is very popular on low-band because of lightning protection. Over the years I have had a variety of antennas for 80m. A squalo is basically a half wave dipole formed into a circle, triangle, or square. These instructions can easily be adapted to other available poles simply by adjusting the dimensions. I love that length. The antenna is constructed using a 4-way electrical conduit junction box and 3/4″ PVC electrical conduit as shown above. The sixty-six foot version is built around a resonant 40 meter antenna and performs well on 80 meters. 5; Interesting observation was the antenna performed well on 6m. A single band 20m 5 element Wire Beam. It points East-West. Our 7-15 MHz 6 foot diameter model is half that size and could be resonated to 3. K0FF's 6 -meter SLOOP. Presenting F Antenna in stock and ready to ship today online!. 36 Foot 11 Meter Loop Antenna. Design Scope The purpose of this build was to replace my 12/6-Meter inverted-vee with a rotatable antenna. This is similar to a doublet, except the antenna is a continuous loop of wire instead of two separate elements. I had a great idea that a full 5 element 20 meter beam in a fixed direction might reach Europe! Some day when the Sun Spots are helping the Ionisphere. This was our in! The flagpole kit came from Lowes and cost $29. ) capacitively shielded loop antenna that I developed for two meters. The antenna tuned successfully from 6-80m bands with SWR below 1. The distance between one point to another adjacent point in a wave is known as the wavelength. 2) a 43 to 51 MHz antenna for observing MUF as the band opens up. Double Bazooka NVIS Antenna Calculator. The two test antennas were put up in the same configurations that I intended to use them in the field. Since I will be building a 3-sided delta loop, I divide that 6. This means for Real long distance DX the lower antenna will be better of most of the time. The Best 6 Meter Antenna for SSB Wire Dipole with just a center insulator and 12 gauge wire The difference between the dipole or omni loop is noticeable. Search for: Search. 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 DOUBLE BAZOOKA INVERTED-L is recommended to be mounted close to the base of a. I have question for the group- I built a CHA P-Loop from the DIY kit and it turned out really nice. Including End Fed Half Wave antennas. - Performance above 160 meters is mediocre. Eventually I'll cough up the $$ for a good HF rig. A Tree Friendly 2 Meter Halo Antenna. A single band 20m 5 element Wire Beam. Performance is better than anything we have ever seen and its wide bandwidth makes it immune to all weather conditions except heavy ice. However, they did not prohibit a flagpole to show off the colors. Magnetic loop receive antennas are a great weapon in the fight against natural and man-made noise. In order to get an idea of the right place to start, certain formulas are generally accepted. 5 MHz with a 500 pF capacitor but it's efficiency would drop to 7. My procedure involved two steps: creating a basic design with a uniform-diameter. Many decent 5/7 reports with this 11 meter wire loop. The antenna This 10 - 160 meter tuned horizontal loop antenna is fed with 450 ohm ladder line all the way into the ham shack to an Palstar AT1500BAL balanced line antenna tuner. A squalo is basically a half wave dipole formed into a circle, triangle, or square. My noise antenna is a 40 to 10 meter multi-element wire-dipole located in the West end of the attic of my home. You are looking at a AG6IF Talented Balun HP (Higher Power). Like the Quad, the Delta Loop Antenna is a 3-dimensional antenna. 6 db/meter through most of the modelled height range. Fig 5—Simple untuned small loop antenna. In the second diagram (B) where the antenna is situated 6 meters above the ground, we see that the take-off angle is in the order of 35 degrees but still at 16 degrees its only several dB's down to the lower one. Long Wire Antennas Look at the long wire antenna on the roof. The antenna Q is very high because the radiation resistance is small compared to the reactance of the loop and the VSWR bandwidth is very narrow. If I had erected a somewhat larger loop, I probably could have operated the antenna on 160 meters as well. To center the hex coupler. 1 It provides useful gain with very simple construction. The most common material for home building small ham radio loop antennas is common copper plumbing pipe. He is going to move QTH and no more room for this antenna. Impedance 80 – 150 ohms, use 2 – 1 or 4 – 1 Balun. 6 Meter Halo Antenna Design from 2 thin 3′ fiberglass rods and some wire-ties. From previous experiments with 6 meter loops I have found that 20 feet of insulated 14 AWG wire is resonant at the bottom of the 6 meter band (just above 50 MHz) where the SSB activity is concentrated. Below is a small (3" dia. One particular hammy item that really helps is a spectral display. The Small 3 foot diameter loop is naturally stealthy for HOA challenges and a perfect complement for vertical and small wire transmit antennas. First, I tried something simple. In other words to increase radiation resistance, the loop has to be made spatially larger. Wire-Beam Antenna for 80m 38 62. The wire don’t see that portion and only sees the wire length. Example : For a 160 meter loop, 1005 divided by 1. This shortened easy-to-build vertical, with no-radials, is made from surplus military camouflage poles. The two test antennas were put up in the same configurations that I intended to use them in the field. 80m - a full wave wire loop suspended between two trees with the top roughly 20m up. This is a very simple antenna to build. org The … K6MYC on Antenna Testing. I have a couple of six meter delta loops. Home Brew Wire Loop Antenna For CB Radio Base Station Operation. OCF Antennas. Like the Quad, the Delta Loop Antenna is a 3-dimensional antenna. This is the TQ Wire 22awg Triple Black Servo Wire Spool. The larger the wire, the wider the bandwidth. 4" base with 180° swivel. Some elbow grease is required. 6 Meter Halo Antenna Project. I have a 10 meter wire dipole up now connected to a Radio Shack HTX100 so I can listen to 10 meter CW in preparation for my code and General exams in October. 1 wave length, more than that, the loop switches to electrical. To cut the antenna wire length to resonance we use the formula: Length (in feet) = 1005 divided by frequency (in MHz). Search for: Search. In the middle I attached the wire to an aluminum pole. The ends of a dipole antenna are connected together to form a closed antenna. As for 160 meters, consider it lost. The antenna offers a gain of 6 DB over a dipole mounted at the same hight. Antennas • T9A10 The strongest radiation from a half-wave dipole antenna in free space is broadside to the antenna. For feeding the loop, I've used both wire and Faraday Loops. This is a 14. The installation process wasn't bad. Diamond ® Antennas are sold through authorized dealers. 296 feet • 15 meters 47. Both antennas were designed for easy construction and quick assembly and disassembly. Design considerations: The design of this 6 m dipole antenna shall include the following design considerations: • The antenna must be compact. The radius of the loop, R, could be electrically small or large. I wanted a small transmitting loop (STL) antenna that covers at least the 80 and 40 meter bands (preferable 80 - 20). 40-10 Meter Portable dipole Phil Salas – AD5X ([email protected]
antenna that is tall but with a tiny footprint and that doesn’t look like any other type of antenna, which might make it stealthier in some applications. An In-Room, 80-Meter Transmitting Multiturn Loop Antenna A little wood, some wire and a handful of components can make a directional antenna for indoor use where outdoor antennas are not permitted. , and are perfect for RVs, vacations, Field Day, or as your go-kit antenna. I never erected a delta loop because I lacked a high enough support that was free from neighboring obstacles that would always get in the way of the loop wire. Some TIPS on measuring VSWR and troubleshooting M2 … Antenna Gain: dBi vs. In some cases my 99 cent loop antenna will outperform the antron 99. Resonant loop antennas have a circum ference of 1 λ. Complete Antenna System including 71 foot antenna for 80-6 meters, 50' RG-8X coax and a feed line choke. I cut the wire, one loop for 50-52 the other52-54, for resonance on the CW/SSB and FM portions of the band then trimmed the 75 ohm coax for VSWR 100/50 match. To enable inserting a loop of wire for tuning purposes. On small vertical antennas, (such as 10 to 30 meter band), you can make insulate the base real easy. I have compared this loop with antron 99 at same height and obtained near equal signal reports from DX stations. At the balcony he has a Diamond V2000 vertical antenna for 6/2/70, and an MFJ loop antenna for 15-40m. This horizontally polarized antenna is an extension of the horizontal loop antenna featured in The ARRL Antenna Book. The basic formula for determining the length of a full-wave wire Loop antenna is:. 947 feet Lengths above are in feet and inches. At B, elevation pattern and at C, the principal-plane azimuthal pattern. On this web site you will find mostly 11 meter antennas. There is little doubt that worldwide DX will become common on 50 MHz over the next four years. Williams, GW0GHF. The length from the center of the antenna and the start of the linear loading should be as long as possible (4. Total Wire Optimum Number Optimum Length Peak Gain. That's all there is to it. 5 in 34 ft, 6 in 11 ft 5 in These dimensions assume you're using bare wire. The 6m 20" high Loop. Since this antenna has no exposed metal wire static charges can not build up thus reducing noise by 6 dB over antennas constructed of exposed bare wires. 2 m) long "counterpoise" wire (6. 5dBi gain over a 1/2 wave length antenna (mounted same height) by shaping some energy from vertical direction to the side. Introduction MFJ manual loop tuners are versatile, high-efficiency loop tuners that can turn any loop conductor into a high-efficiency multi-band transmitting loop antenna system. The formula used to find a full wave loop antenna is 1005 / FMhz. I cut the wire, one loop for 50-52 the other52-54, for resonance on the CW/SSB and FM portions of the band then trimmed the 75 ohm coax for VSWR 100/50 match. The Wire Size can range from 16 AWG to 12 AWG. THE MOXON ADVANTAGE: A Moxon beam can be expected to provide approximately 5. It is a resonant loop with a particular shape. Simple Wire Antenna for All HF- Bands. The privacy fence also acts as an anchor for one. Having purchased an all-mode, all-band (160m - 70cm) transceiver, I became curious about what 2-meter weak signal operations have to offer. By implementing a helically wound design a 6ft diameter 80 meter text book loop seems to emulate a 10 to 15 ft diameter loop of a single conductor. The basic formula for determining the length of a full-wave wire Loop antenna is:. Some TIPS on measuring VSWR and troubleshooting M2 … Antenna Gain: dBi vs. Chris (K2CJB) does an excellent job of taking you through the design, construction, tuning, and use of this somewhat unusual antenna. org The … K6MYC on Antenna Testing. 859 / 3 = 2. Want to be heard on 6? JK Antennas JK65 6-Meter Yagi Antennas give you tremendous VHF performance with very high gain on a short 15-ft. It is important to note that …. A Long-wire Aerial for Six Metres Brian D. The antenna is constructed using a 4-way electrical conduit junction box and 3/4″ PVC electrical conduit as shown above. Wire-Beam Antenna for 80m 38 62. I have mounted the 6. For instance, If you use insulated wire, the loop size will be approximately 2% shorter, depending on the type of insulation. long wire loop gets even lower - remarkably so, as shown in Figure 6. 6 out of 5 stars 3. The resulting quad has about the same gain as the Yagi while being smaller and lighter. I’ve been using large multi-band ladder line fed loop antennas with good success for many years. Delta Loop Antenna. The gamma wire was a 14-inch long piece of RG8X dielectric and center conductor. The formula for the wire is 1005 divided by frequency. Antenna MAKERS CONTRUPTIONS for: Breakfast, = LUNCH= and DINNER! Also please note that, we for NOW, do not list the Hi-Q-2. 6 MHz loop on 7. The Delta Loop has very good gain and F/B. I have mounted the 6. Within this physical description there are two distinct antenna types. The 6 meter J-Pole antenna is shipped UPS Ground in a sturdy box. Next consideration is the feed point. While that setup produced results on 6M, I wanted to get more antenna without going to a yagi/rotor. 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. 22 Different Wire Antennas for 160m compilation by TopbandHams Random Length Radiator Wire Antenna. With thin-wall PVC, the antenna will be swaying around if there is any wind. Wire Antenna Design Lengths. The length from the center of the antenna and the start of the linear loading should be as long as possible (4. Alpha Antenna 6-80 Meter HD-FMJ portable HF antenna [Alpha_Antenna_HD-FMJ_HF_System] - The Alpha HD-FMJ (Heavy Duty Full Metal Jacket) system is a complete 6-80 meter 500 watt OCF (off-center fed) type HF antenna that is pre-tuned and requires no moving clips on coils or readjusting of whips for tuning. During what turned out to be an extended tower-raising project (Going from 55 feet to 90 feet), I had my beam down and I needed an antenna that could provide the necessary gain and angle of radiation to talk to my friend Skip down at the South Pole. They can be highly effective as well as portable. And you will find information on gain, front to back (F/B), beam width, propagation, height versus take of angle, SWR- bandwidth, stacking and coax demping. Dual-Band Sloper Antenna 39 63. Having purchased an all-mode, all-band (160m - 70cm) transceiver, I became curious about what 2-meter weak signal operations have to offer. The formula for the wire is 1005 divided by frequency. KL7JR SLOPER DELTA LOOP 80 -6. 00 shipping. A 6 Meter Moxon Antenna Discover 6 meters for the first time or enhance your existing operation with a rugged but portable version of this novel 2 element antenna. Eventually I'll cough up the $$ for a good HF rig. Total Wire Optimum Number Optimum Length Peak Gain. Enter the desired frequency. ; power divides between R rad and R loss. - Performance above 160 meters is mediocre. Feedline radiation isn't always a problem. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. Marris, G2BZQ See Feedback, May 1996 QST for corrections to this article. I also enjoy the fact that uning the 40 meter wire to the desired frequency range a good thing too. 64 results for 6 meter antenna END FED "RANDOM WIRE" HF DIPOLE 9:1 ANTENNA. 92 - V-Beam Antenna for 15m. I used 1″ thin-wall PVC pipe, aluminum tape, and RG-8X coax. Building the 6 Meter Moxon Antenna Description The Moxon Antenna, designed by Les Moxon G6XN (SK), is a compact two element beam antenna with about 5. up to 135 feet each, would provide an improvement in signal strength for this 160 meter antenna. Right now, I currently have, a dipole with a 1 to 1 balun between the 2 legs, and each leg is 19 and 1 half feet long. Recently I got the I3VHF Baby loop antenna from Horst, VR2BT. This antenna has more gain broadside to it than a dipole, if in the vertical plane. 6 Meter, "Magic Band" loop antenna Ham Radio Horizontal SSB six meters. 2) a 43 to 51 MHz antenna for observing MUF as the band opens up. The quad uses #12 bare wire, a 10 foot boom, and features electric fence post spreaders. 10-Meter Four-Element Yagi Added March 2012 The all wire antenna spell has been broken. The detailed construction drawings, sheets and. It is a great complement to vertical or wire transmit antennas. A single band 20m 5 element Wire Beam. The antenna wire starts in the center from the balun and goes over the fishing pole to around 6 meters, then goes back about 2 meters and then back again to the end of the fishing rod. In the first couple hours of having it up I was able to hear stations I could not hear before. Usable NVIS service occurs from 6 to 24 feet above ground with energy directed. 86 Mhz 3rd Harmonic Halfwave in space is: 9. Only at eHam. article in The Antenna Book; A UHF Discone Antenna for scanners spirals (planar) Log-Spiral antenna from 2 to 40GHz with impedance matching. It is important to note that …. I have a 5/8th over 5/8th vertical collinear antenna hanging in a tree at some 30 odd feet high, but I never heard anything on it, except on FM. Adventures with an 80 Meter Loop Antenna, Part 1 this is the same wire used to make portable wire antennas manufactured by such companies as TCI. It is designed for many uses: 1) noise souce antenna for the noise cancelling receiver. It is a great complement to vertical or wire transmit antennas. The Top 5 Backyard Wire Antennas (in no order) by L. • The calculators give you theoretical values, your actual construction will also affect the antenna greatly. The elements are reasonably small, but not so small that building tolerances are critical. A 145MHz 2m loop. The dashed lines represent bare wire radials and the solid lines insulated wire radials. By adjusting the coupling loop, it's possible to get a very low SWR on several ham bands (e. 94 - Laid-Back Quad Antenna for 80m. My log books show the results!. John, W6UQZ and I went to N6IJ to plot out the antenna on the property. 100′ then probably 6-8″ of separation would be fine. He loved working 20 meters, but the housing community he moved into prohibited antennas that could be seen by the public. A Tri Band Antenna for 2 meters, Figure 8 - Tri band antenna with helical loop which allows for perfectly symmetric and an ideal thin wire is inserted at the. Home Brew Wire Loop Antenna For CB Radio Base Station Operation. Here's a Delta Loop from M0LTE. Small loops are used in radio direction finding, and in. The Prototype I have recently started to experiment with such an antenna, a corner-fed square loop, 15' per side, mounted at ground level, and constructed with insulated wire. The antenna tuned successfully from 6-80m bands with SWR below 1. The grounded loop antenna (non-resonant, unbalanced), works well on the HF Bands. When I finally installed a tower for an upper HF antenna I got the support and space I needed. This ingeniously designed single wire loop antenna works in 4 amateur bands in a delta shaped configuration (hence I called it a multi-band mono delta loop). by Jim DeLoach, WU0I. some novel loop disguise techniques. As the late spring and summer months heat up, six meters comes alive. 17 Meter Antennas 17M Beam Antennas -- From The ARRL Moxon Antenna Projects-- 17M and 20M Via KD6WD Verticals. The Delta Loop antenna is one of the famous ”magical antennas”, but in reality, the Delta Loop antenna is not as magical as it’s reputation. August 23, 2004 This paper is an extension of a prior paper titled “Design of a Five Band Quad and Its Coax Feed System” which described a large 4 EL (5 EL on 10 Meters) five band cubical quad antenna covering the 20, 17, 15, 12, and 10 Meter bands. Antenna wire is 2. A 6 Meter Stealth Antenna or You never know what's lurking in the woods Gary DePalma AC8NE. I never erected a delta loop because I lacked a high enough support that was free from neighboring obstacles that would always get in the way of the loop wire. Currently I have two wire antennas, a PAR Electronics EF-SWL 15 meter with impedance matching transformer, made in the US; and a home made 17 meter wire with balun. That antenna will work on ANY band from 80 through 10 meters. The measurements below are for building a simple Dipole Antenna. The privacy fence also acts as an anchor for one. The above graphic depicts the overall layout of the loop antenna consisting of 558 ft. This is a 14. After having marginal results on 17 meters using my Alpha-Delta DX-EE with a tuner, I put up a resonant dipole. Gain 8,99 dBi, F/B 26 dBi, 50 Ohm. How to Work 6-Meter DX. The two test antennas were put up in the same configurations that I intended to use them in the field. Loop Antenna # 2 - Operation moderately far from resonance or on harmonics: When operating a Vertical or Horizontal Loop moderately far from resonance or on harmonics, average SWR will be lowest using a 4:1 balun. Characteristics: It is more or less omni-directional, and horizontally polarized. of #16 "silky" stranded wire cut to one wavelength long on. Why? I want to do 80 mtrs DX, but I have no room for a decent 80 m wire-antenna, nor would I be able to install such an antenna high enough above ground. They are #12 plastic covered stranded wire with RG59 matching stubs. My procedure involved two steps: creating a basic design with a uniform-diameter. The 20 meter vertical loop antenna will get you around the world if the conditions allow it. dB on 6 meters and much less on lower bands). The college had a good open area on the terrace with some building surrounding. This wire that goes to the tuner can be from 1 meter to 3 meters long (from 3 to 10 feet) but do keep it as short as possible. Loop Antenna Notesupdated Dec. Wire-Beam Antenna for 80m 38 62. Source impedance on 7. It is our intention is to SELL the World Wide Marketing Rights for these two excellent Hi-Q antennas, because we are overwhelmed with. Murray, KD1BL Author's Note: This article describes a 75/40 meter NVIS, but one could use the construction techniques to build just a 75. I put up an 80 meter full wave loop using about 280' of #14 wire in almost a square. How to Work 6-Meter DX. Loop antennas Loop antennas share one common factor. It continues to be used for Test Method RE101 of MIL-STD-461F. K0FF's 6 meter SLOOP antenna K0FF It is more or less omni-directional, and horizontally polarized, it's just a dipole folded around on itself, and supported at the far (open) end with a plastic insulator. All these loops involve a resonant tuned circuit made up by a multi-turn loop coil and a variable capacitor. The basic formula for determining the length of a full-wave wire Loop antenna is:. With the short wavelength and height needed on 6 meters, this is a great band for experimenting. A magnetic loop antenna is a winding of copper wire around a frame (for air-core loops) or around ferromagnetic material (for ferrite loops). The formula for the wire is 1005 divided by frequency. For wire antennas, I suggest using RG-8X, RG-8X Plus or Super 240. In order to get an idea of the right place to start, certain formulas are generally accepted. I thought about doing any of 3 things: 1. Six Spoke BCB Loop Antenna Hexagon Sprial Loop Antenna. He loved working 20 meters, but the housing community he moved into prohibited antennas that could be seen by the public. There are several schools of thought about wire antennas. All of the aforementioned points require an antenna design with a good pattern, resonable gain and good impedance. Random Wire Antenna Lengths. In this video from Milton (M0ZMF), we get a thorough tutorial on how to design, build, adjust, and use a 6 meter delta loop antenna. 6 dB of “Free” Ground Gain 40 through 10 meters: a horizontally polarized dipole, Yagi or quad easily provides 6 dB of ground gain but only if it is installed at the correct height 80 meters: If you cannot install a horizontal antenna at 25 meters high or higher: use a vertical or a vertically polarized delta loop (corner fed), or. From WH2T - Dr. Loop Antennas Vertical Antennas and so I needed a 50MHz antenna. This is my first home brew "DIY" antenna for use on local 2 meter repeaters and simplex frequencies. TECH: PAR Electronics Omniangle OA-50 (6 Meters) Currently I have been using the Icom 7000/AH-4 with about a 65? long wire at 5?. I have been a keen shortwave listener since 1970 and have had many receivers and antenna types during this time. Below is a small (3" dia. If one knows the antenna >factor, such as is the case with LZ1AQ antennas, AND the filtering/attenuation response ahead of the Kiwi, and if the Kiwi S->meter/walterfall calibration is set then signals and noise, in either S units, dBm or volts/meter could be deduced. Another long range VHF antenna is the AT-984A/G long wire antenna. This had 4 x 2 inch coils in each corner of the loop with 30 turns of 1mm wire and I stretched the loop all around the garden and even inside the attic to make the loop as big as I could. It is used by amateur radio, shortwave listening, and longwave radio DXers and military applications. A really good antenna would be a loop running the entire perimeter of your hanger either on the roof or near the ceiling. I used heavy outdoor electrical conduit with an outside diameter of 22. So at last the weather has turned for the better and I have been assembling the M0PLK Delta Loop which came from Poland. 20 meter dipole and 40-20-10 off-center fed dipole In storage: Horizontal 80 meter loop (20, 40, 80 meters) 7-element 6 meter beam (Yagi) 17-element 2 meter beam 144 MHz beam & 440 MHz beam with preamplifiers (satellite antennas) Dual-band 144 MHz/440 MHz omnidirectional vertical (for repeaters). Wire versions are usually the answer. As the late spring and summer months heat up, six meters comes alive. The Short-wave Broadcast Listening Bazooka antenna is recommended to be mounted to a secure point such as a roof peak or metal pole for optimum results. 67 foot ground plane Three Quarter wave Vertical: 14. 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. They are affected by height above the ground and surrounding objects. 24 ft lengths of 300 ohm ladder line for each feed/phasing line. It provides 2. SUCCESSFUL WIRE ANTENNAS 44 If it were made from an infinitely thin conductor wire, our theoretical dipole in free space would have an impedance of about 73Ω at its centre. The grounded loop antenna (non-resonant, unbalanced), works well on the HF Bands.