160 Meter Inverted L Antenna Matching

A couple of metal rods driven into the soil will not take the place of a radial system. Note: if you. For low matching network loss, the Q of the matching/tuning elements should be significantly So in many ways a lower Q antenna is more advantageous, but only if the Q decrease originates from increased radiation and not from higher. This equipment was used until World War II. Or rather: match the amp to the match found by the tuner. The folded part of the antenna adds a horizontal radiation component to the vertical radiated signal. 158 - Tree-Mounted HF Antenna. Here I build a multi-band dipole antenna for HF use on 40-20-15-10-6 meters. 80m Inverted-L Antenna (Base-loaded for 160m) Click here to jump to latest news on this antenna My coaxial-dipole would just about tune up on 160m but its replacement, a standard 40m half-wave dipole wouldn’t. Extra to order Groundrod hotdiped with wire connection to the balun. These antennas can be set up as a straight suspended wire or erected in inverted V format. A magnetic loop antenna for 600 khz-4 mhz. 27-A antenna current. 213 - Stub Matched Dipole Antenna. However, one of the exceptions is 160 meters. If you are unable to make one for. inverted Delta Loop Antenna, I never tried such Antenna before, just test it Winter 2005. "QSO-KING" 160-6 meters 1. On 3830 for this contest I said about the low bands: ‘an inverted L with some radials fed with a SGC-230 coupler for 80/160m. In the inverted-L antenna, the monopole does not run An additional matching circuit is needed to match the low-feed impedance to the usual The structure of inverted-F antennas and in particular the location of the tap is usually determined by. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. Inverted-V Antenna with two 6. T h e antenna operates as an inverted dipole 011 80 m e te rs, a modified inverted dipole on 160 m. Terminated Sloper Antenna. My 160 Meter antenna. A Practical Antenna for 160 Metres by G3YCC This aerial is one I have used for top band (160 metres) - it was suggested to me by Alan Inverted-L for 80m & 160m by ON7EQ The antenna is inspired on the 'Battlecreek Special' design, but then limited to 80 and 160m (no 40m section). The attic antennas can handle the other bands. Curtain Type Antennas HALF SQUARE, DOUBLE HALF SQUARE AND BOBTAIL CURTAINS! By WB3AYW. 160 & 80 meters have always been my main interest. However, one of the exceptions is 160 meters. The main station antenna is a doublet with a 240 foot top at a height of 50 feet. Or rather: match the amp to the match found by the tuner. Good Vertical Antennas • A straight quarter-wave (Best) –λ/4 ~ 125 ft at 1830 kHz with THHN • Inverted L (Good) –Go straight up as high as you can with a wire, then bend the remaining wire to run horizontal to resonate it • Tee vertical (A bit better than L) –Like an inverted L, but the top is extended in opposite directions. Here is the remote control version using relays. an inverted L, hung in a. The G5RV antenna is similar with the exception that a length of open twin wire feed line or “ladder line” is used to create a broadband feedline balun before connecting to the coax. Mine is a wire that runs up from the base of a tree approx 30' and then through the top of the tree approx 75' to another tree. Antenna Structure and Matching Circuit Investigated antenna structure is shown in Fig. The antenna wire was attached to one side of the balun and a 10-gauge wire ran to a set of fanning wires used as a ground plane on the other. A choke balun between the transformer and the feeder prevents this. This has 4 x sloping radials at 45 degrees with a feedpojnt up at about 7 meters in the air. Our 8-Band models have a 90 foot leg and a 180 foot leg, totaling 270 feet. Mullaney, an American radio broadcast pioneer, and consulting engineer. For low matching network loss, the Q of the matching/tuning elements should be significantly So in many ways a lower Q antenna is more advantageous, but only if the Q decrease originates from increased radiation and not from higher. ’ There you go. I chose the Magnum 160 VX2 vertical from Force 12 for my 160 operation. The transmitter had a pair of T-40 tubes on 10 meters and a pair of 211Es on 160. ” I ended up with 52 contacts and 23 sections, for me, a good effort. Many hams do quite well with dipole antennas that are electrically low; for instance, an 80-meter dipole strung between two trees at 50 feet (less than a quarter. Bandwidth: An inverted-V dipole antenna has a higher Q than a simple dipole so it tends to have a narrower bandwidth. https wildbill1 2 месяца назад Does the antenna need to be in an inverted L for 160 m to work? Steve Ellington 2 месяца назад No. Figure 4 shows a theoretical two-element yagi designed for 75m (3. 8mm: L = 0 ohm • C1, C2 are not populated AN1088: Designing with an Inverted-F 2. 109 – Coax Inverted-L Antenna for 80m. The loop is. The Inverted "L" is a 1/4-wave Marconi, fed against ground or a counterpoise such as radials. 5), for a multi-band antenna. Vertical Polarization on 160 Meters almost always provides better DX performance than any horizontally polarized antenna Vertical, inverted-L, T, or umbrella transmitting antennas almost always outperform horizontally polarized antennas at distances beyond 1500 miles Nearby towers and. We hear the three antennas, and then the inverted L again. The inverted-L antennas works fine but when bringing down the crank-up tower in windy conditions brings down down the whole antenne, no dx on 160 meters anymore. Short Antennas for 160 Meter Radio. The size of the ground plane is λ × λ, where λ is the wavelength of the operating frequency. Government. However the antenna reactance will almost certainly be in the 550-650 ohm range, requiring ~50uHy of inductance for antenna matching. Transmitting Antennas The 125 foot vertical: the 160 meter gold standard at least 30-60 shallow buried 120 foot radials 4-square arrays of phased 125 foot verticals very high performance for both transmitting and receiving at least 30-60 shallow buried 120 foot radials for each vertical Tall towers and antennas will significantly degrade the. My (lousy) 160m Inverted-L Antenna. So the other day. 20 meter quarter-wave vertical antenna experiment Not content with attempting to understand and build 40 and 80 meter verticals, I’ve decided to build a 20 meter version tonight. Ham Radio 40/80/160 Meter Inverted V Dipole Antenna. So, What of it? The system now up is the same/original inverted-l vertical section with the K2AV folded counterpoise and isolation transformer in place of the prior elevated radial jumble. I’m busy building an inverted L antenna. An inverted L antenna is a simple type of antenna that can be used to send or receive at a wide range of frequencies. In fact, all ¼-λ antennas fed against ground require a radial system if losses are to be kept low. The other is a 40M/80M dual bander, which is 3/4 wavelength 40M and 3/8 wavelength 80M. Dipole Antenna Calculator. Operating 160-meter NVIS. 5MHz or 2-4. On 10m we hear 9A3TY in Croatia at 1000 miles. The unit will match my 84ft (approx 26m) inverted L wire on the 160-20m (1. A meter that indicates the effective value (0. On 3830 for this contest I said about the low bands: ‘an inverted L with some radials fed with a SGC-230 coupler for 80/160m. A number of members were big into 160 meters — K4TEA, K4PI, K4UEE and sev-eral others. 160 Meter Inverted "L" Antenna - Updated … Перевести эту страницу. The inverted "L" antenna When it was discovered that Jirko OK5IM was selling the 12. 5m legs - Stockcorner JC-4s remote ATU - 10m symmetric ladder line. The capacitor can be motor-driven from the ham. 28 * F * L where (X L is inductive reactance in ohms, F is frequency in MHz, and L is inductance in microhenrys. If you are unable to make one for. 160 meter Inverted L Listening on 80 Meters: New Antenna Prelim's! K1GMM Green Mountain Maniac. 30 Watts QRP, 80-10 Meters, 132 feet. The 160m Inv-L Story. METALFLM *. Antenna resistance Ra may be from 20 to over 200 ohms on 630m depending on your setup. Having driven my ham radio budget into the red with the tower project, I have resorted to using a freeware antenna modeling program: MMANA. There are two selectable "counterpoise" wires, connected to the BALUN. Vari-L Benefits: Low- Observable Antenna. Because it is terminated, it is a broadband antenna so it works great on 160, 80, 60 and 40 meters. 160m inverted L current 160m inverted L frequency plot Matched with a 2:1 balun, to give a 100 ohm feedpoint impedance, this antenna shows a great SWR on the 160 meter band and a vaguely reasonable SWR on the 60 meter band. Simulation of a 40-meter Inverted Vee Antenna in free space and over ground. https wildbill1 2 месяца назад Does the antenna need to be in an inverted L for 160 m to work? Steve Ellington 2 месяца назад No. Rising up from. 50 for UPS), or from your local dealer. 112 – Novice Vertical Antenna for 80m, 40m, 15m, 10m. GB5RV 10-160m Inverted L 60m Band Last items in stock €119. I feed my Hy Gain HT as a modified inverted L on 160 and use capacitors made from RG-11U switched by a BC-375 tap switch. So what is it ? G7FEK’s original “Nested Marconi Antenna” was first designed in 1988 and comprised two quarter-waves in parallel, fed against ground in inverted L. and durable antenna. TUNEHALF * Impedance matching circuit for high impedance, end-fed, antennas, Plus coil design. Inverted L antenna for 160 meters topband. Ive done extensive experimentation with radials on vertical antennas on 160 meters during the past 18 years. The antenna was built up just. Antennas for Satellite Work. (The advice regarding the use a feedpoint balun pertains to the Inverted Vee as well. 8 MHz VSWR=1,3; NACC-1,1; 1998 kHz to. Next up: try to match it with the amp. hi gh enough, it is possible to run the 40-meter antenna wires off. The antenna is designed to be fed with 50 or 75 Ohm Coax Cable of most any length with a Balun. The popular inverted L seemed to be a good choice for ease of installation, low cost, and design flexibility. It consists of a monopole antenna running parallel to a ground plane and grounded at one end. An inverted L antenna is a simple type of antenna that can be used to send or receive at a wide range of frequencies. • It was used as a multi-band antenna because when fed with ladder line (not coax!) it is easy to match the on any band from 80m to 10m • A G5RV used as a multi-band antenna should be fed with ladder line. It worked okay on local and close-in DX,. The transmitter had a pair of T-40 tubes on 10 meters and a pair of 211Es on 160. Ameritron AL-82 160-10 meters Dentron Clipperton L 160-10 meters. Government. This is required to reduce your ground losses and radiate a decent signal. It now has stacked Yagi's pointed towards Europe for 10-meters. Here is the remote control version using relays. There are a lot of 160 designs out there on the internet with quite a few adding coils etc to match shorten verticals, or top loading with various configurations. GM0ONX 6 Band Inverted L Antenna MK3 In January 2005, a few days after replacing my mini quad with a Cushcraft MA5B, the west of Scotland was hit with a major storm. Inverted L. A week or so ago I was trying to create an EZNEC model to match what my AIM4170C is showing me for my 160 meter Inverted L. The main difference is the A look at a compact magnetic loop antenna capable of operation on all amateur bands between 160 and 10 metres. On the tower this time, not on the wiggling aluminum tubing. Other antenna. P roject "Be fast and easy QRV on the 160-meter band". - (+/-) 42M of electrical wire 2. It is sort of an inverted L. Dx Engineering Vertical Antenna Matching Network Vmn-1. His "frustration" was the same as mine, very narrow bandwidth. Whether you`re QRPbackpack, vacationing, emcomm station, or an antenna neighbors will never see, MFJs got an EFHW for you: MFJ-1982LP, $59. I also have a Loop-on. Click on the image to enlarge it. It starts at the center of the yard between two large trees and drapes over one branch about 30 feet up then travels 90 degrees over toward the house. See full list on k2av. for minimum SWR) gives me matching which is close enough. Bandwidth: An inverted-V dipole antenna has a higher Q than a simple dipole so it tends to have a narrower bandwidth. These antennas are not truly verticals, as part of the antenna is horizontal and thus radiates a horizontally polarized component. Voltage causes arcing and instantaneous operational failures, while current is generally a time average failure from heat. The vertical section should be as high as possible, with the remainder of the antenna run horizontally to a support, such as a tree or a mast. The main category is Antenna for 160 meters band that is about 160 meters band antenna. m Antenna “extension” Coil. Diagram of 160/80 meter Inverted L Optional method Instead of using the mast as the "vertical radiator", set the coil about 2 feet out and away from the mast at the top and use wire as the vertical radiator instead of the mast and then drop and terminate the vertical radiator wire in the PVC coupling where it is terminated with the coax center. 5mm2 electrical wire & a plastic bottle (beta-match or "hairspin") - 1. It works well for local and DX communications if a ground-radial system is used Illustration B shows a simple matching network that works very well with inverted-L antennas. "Editor's Note: Due to the popularity of some of eHam's 2: Yes it will be noisy in an urban near field environment; I use my 40 meter antenna as a listening antenna when my local noise competes too much. DJ0IP's 160m Inverted-L, October 2012. I also have a Loop-on. Inverted-L Antennas. Vertical Polarization on 160 Meters almost always provides better DX performance than any horizontally polarized antenna Vertical, inverted-L, T, or umbrella transmitting antennas almost always outperform horizontally polarized antennas at distances beyond 1500 miles Nearby towers and. 707 of peak) of the ac signal can be used to measure the standing waves present on the half-wave antenna. The above photos are from my protoyype. On 12m we hear KU1T in West Virginia some 3700 miles. It is sort of an inverted L. Click on the image to enlarge it. 8 nH • EM260 0. The Inverted L My 160 meter antenna is an Inverted L. Both types of antennas are world renown for their unique characteristics in the 40 meter and 20 meter bands. I used my old trusty aluminium push up mast to get to a height of 10 or 11 meter. Common-Mode Transmission-Line Currents. This antenna system uses common radials for two inverted Ls. The antenna wire was attached to one side of the balun and a 10-gauge wire ran to a set of fanning wires used as a ground plane on the other. Lengths are given in feet, inches and fractions of inches, and in meters. Again, the tuner easily tuned the antenna on all the bands tested and QSOs were successfully made on 20m and 40m. The antenna displays a low feed impedance, which allow you to feed it directly with 50-ohm coax cable. Probably one of the easiest installations is to simply attach the antenna to a tree or other tall object. Above ground. In more practical terms, the average backyard antenna builder is unlikely to lay down a major radial field for the most efficient 160-meter operation. 5 m long and 22 m long were found to be ineffective on 160m. 160m Inverted-L RESULTS (October 2012) This shows the SWR curve at the feedpoint of the antenna. View and Download International Antenna Company Double Bazooka INVERTED-L installation manual online. I could potentially get the vertical section of an inverted L up about 45-50 feet. exe program that can be used to predict feed line and Put up a vertical (or inverted-L) instead, with a good radial ground system under it. I reviewed several commercial verticals and considered building an inverted L from my place. METALFLM *. 156 - Very Low Frequency Inverted-L Antenna. 70m diameter Loop. It is always a good idea to feed Vertical and Inverted-L antennas through a Common Mode Current Choke. I took the advice of friends and bought a great vertical. 158 - Tree-Mounted HF Antenna. · Works well in vertical, sloping, inverted vee, and inverted L configurations · The matching network is simple to construct and use · Can also use on harmonicaly related bands, such as 40 and 20 meters. I feed my antenna with 45 ft (13. The 160 antenna covers 1800-1860 with under 2:1 SWR. There is even a. 160m Inverted L Antenna Length. A meter that indicates the effective value (0. It will work all of the 40 meter band plus a portion of the 80 and 160 meter bands. W0ECS, I'm contemplating a 160 meter wire vertical antenna, as well, and I have about 77 feet of vertical distance with which to work after subtracting 15 feet for an elevated feed point. Common-Mode Transmission-Line Currents. Good grounding was a constant problem, so an Inverted-V using both coils was eventually constructed. This equipment was used until World War II. As a result of numerous experiments he stopped for coaxial INVERTED L (see figure), which gives a vertical polarization and allows you to work without additional adjustment throughout the. I took the advice of friends and bought a great vertical. The wires are strung in parallel, spaced 2 inch (5 cm), and about 3 ft (1 m) off the ground. It is all-band and for practical purposes omni-directional. Then he had RG-58 coax running from the balun to the shack. Proof that it works Why should you believe my claims for this antenna? Here are three reasons. I want to be able to also use this antenna for 80 meters. , a zig-zag OCF dipole. 160M Inverted L. The capacitor is a surplus unit I paid $1 for at the 2001 Ft Tuthill Hamfest and appears to be an old Hammarlund unit. At the least, a dipole should clear any sur- rounding buildings, and other large obsta- cles, for good performance. Double Extended Zepp Antenna. A very easy way to match an inverted L is to cut it a bit long so it is inductively reactive and then use series capacitance which does NOT need to be in the form of a variable. Antenna for ranges from 10 to 160 meters. Frank // WB3AVN //. The reception will be good on some bands, and rather lousy on others… this is predominately due to variations of the antenna impedance at different frequencies. I designed and constructed the antenna on November 11, 2007. The antenna may also be used in the form of an inverted-V (L). It consists of a monopole antenna running parallel to a ground plane and grounded at one end. 0 nH • EM260 62 mil: L = 1. T h e antenna operates as an inverted dipole 011 80 m e te rs, a modified inverted dipole on 160 m. First let’s look at the theory. The inverted L is much stronger than the dipole, but there is noticeably much less noise on the beam. My most recent antenna for top band was an odd shaped 160 meter full wave length loop. The ability to apply direct feed is just another of the many joys of the 160 meter inverted-L antenna system. 8mm reference design has the printed inverted-F antenna inherently matched to 50 ohms. Remember, this loop is a directional antenna so it needs to be pointed at the transmitting station. Ohm's law showed my antenna feedpoint resistance was about 49. DXCC: WAC:. 5 m) of open-wire line, from a balanced L-network tuner. Inverted L Antennas By Arnie Coro(CO2KK) Inverted Vee Antenna — From The N4UJW Antenna Design Lab Inverted Vee Antenna Design — Nice Illustrations – From K7MEM. I took the advice of friends and bought a great vertical. Below about 90' overall wire length, the antenna becomes essentially a 40-meter-and-up inverted-L. The antenna is inspired on the 'Battlecreek Special' design, but then limited to 80 and 160m (no 40m section). Dipole Antenna Calculator. Viewed from the side, it looks like the English letter "V" turned upside down, hence the name. I needed to take about 2 feet off the horizontal section to get mine resonant at 1830. This is required to reduce your ground losses and radiate a decent signal. In more practical terms, the average backyard antenna builder is unlikely to lay down a major radial field for the most efficient 160-meter operation. The Inverted-V antenna is great for NVIS (Near Vertical Incidence Skywave) regional radio contacts and will work also for long A coil-loaded 40/80/160 meter inverted V dipole antenna. Short Dipole for 80M-- From 4S7NR 80 Meter Frame Antenna -- From Harry Lythall - SM0VPO. If HF radio goes the way of the typewriter it will be no surprise. Well I had a difficult QSO with a couple of ham enthusiasts up in the North East of England this morning. At the base of the antenna is a remote RF-sensing automatic antenna tuner, which manages to match the antenna quite well on all bands from 160 through 6 meters. Antenna couplers are placed at the antenna, and precisely match conditions of the antenna to the The antenna is 1/2 wavelength above ground. • The G5RV was originally designed as a 3 /2 antenna for use on 20 meters. Some elevated counterpoise wires running along the fence under the wire helped to improve radiation efficiency. There are two selectable "counterpoise" wires, connected to the BALUN. Ham Radio - 80 160 meter magnetic loop transmitting antenna. 160 Meter Inverted “L” Antenna – Updated 12/30/2020 I have a need to get on 160m occasionally for a contest, but have limited space. 3m Fiber-Mast DX-Wire Heavy-Duty - Design Baluns 1:1 current Choke 5kW. (antenna, coax and counterpoise lengths) How to match the antenna to coax cable (matching unit values and placement) Choosing a configuration that fits the location (vertical, sloper, inverted L, horizontal options) Choosing a feed line choke or noise filter (selection and installation) How do these steps apply to your end fed?. The horizontal wire component measured about 160 feet long, distributed in a spiral fashion around my small lot. m Antenna “extension” Coil. 0 MHz range of 80M, see the Frequency/SWR chart below. Made out of aluminum tubing Uses PVC as an insulator Is 32 feet high. Again, the tuner easily tuned the antenna on all the bands tested and QSOs were successfully made on 20m and 40m. This gives me the possibility to work on the 80-meter and 160-meter band, using a CG-3000 tuner. With the RT-600, SWR is nominal for all HF bands and 6 meters. Voltage causes arcing and instantaneous operational failures, while current is generally a time average failure from heat. These slides review the Vari-L method to combine 'flagpole' and 'flat-top' to form an Inverted L in a motorized configuration so that the antenna can be tuned to any ham band; 75 – 10 meters. 160 meter band was allocated on a primary basis to the LORAN radio-navigation system that began operating in and around the 160 meter band in 1942. First let’s look at my ¼ WL 160m vertical. The Wire Size can range from 16 AWG to 12 AWG. 5m legs - Stockcorner JC-4s remote ATU - 10m symmetric ladder line (Wireman 450 Ohm) - 6. htm 08/13/2009. The recently-added. Plus 80-meter band (developed to from 80 to 10-meter band) on the same Inv. "Editor's Note: Due to the popularity of some of eHam's 2: Yes it will be noisy in an urban near field environment; I use my 40 meter antenna as a listening antenna when my local noise competes too much. 0 nH • EM260 62 mil: L = 1. Over the last 28 years I have tried many different 160 meter antennas. I operated the 2003 E-PA QRP "TAC" Contest with the W3EDP/Z-11 antenna system, this time with the 85' portion extended in an inverted-L arrangement between two trees and the 17' component lying on the ground beneath the radiator. Mike says he plans to add about 1/2 mile of ground wire every year until it performs to it's optimum value. ” However, 160-meter antennas can be large and difficult to install due to lack of available space. W4TWW works on 160 meters since 1951, and has designed a lot of antennas. Bandwidth: An inverted-V dipole antenna has a higher Q than a simple dipole so it tends to have a narrower bandwidth. My 40 meter vertical cost me $13. We hear the three antennas, and then the inverted L again. It utilizes a 9:1 UNUN transformer in order to bring the impedance of the antenna to more manageable values for your antenna tuner. GB5RV 10-160m Inverted L 60m Band Last items in stock €119. when using the 160m antenna the 40m vertical wire on the mast is disconnected. ” However, 160-meter antennas can be large and difficult to install due to lack of available space. DJ0IP's 160m Inverted-L, October 2012. This one used a T240-43 toroid in a 49:1 impedance matching unit at the base. I asked him about the antenna and was told that it was a 160 meter 3/8th wave, inverted ‘L’ antenna. 4 GHz PCB Antenna Tuning and Antenna. A popular and effective antenna for 160 meters is the inverted L. ) Both Dipoles and Inverted Vees can be fed with 300Ω or 450Ω ladder or open wire feeders into a balanced Antenna Tuner. Bandwidth: An inverted-V dipole antenna has a higher Q than a simple dipole so it tends to have a narrower bandwidth. I entered this data into the 4nec2 software as a new model for analysis. Most commercially-made G5RV. Antenna for a field day. 6 ohms - a good match to my transceiver, even if DX performance was unimpressive. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. I'm now very intrigued with the 4-ele Hi-Z array. A dipole isn’t the best antenna for DXing 160m, especially if you are unable to get it up in the air above 65 feet. https wildbill1 2 месяца назад Does the antenna need to be in an inverted L for 160 m to work? Steve Ellington 2 месяца назад No. Antenna Matching Components • EM250 62 mil: L = 2. Cell Tower. ALE and Selcall Antennas, Broadband Antennas, and BBTD antennas for Automatic Link Since the stock matching unit does not provide a connection to the shield of the coax for attachment of wires, it A Broadband Butterfly Terminated Dipole Antenna BBTD Inverted V optimized for the 1. 109 – Coax Inverted-L Antenna for 80m. 85 - Backpack J-Pole Antenna for 10m, 6m, 2m. 109 – Coax Inverted-L Antenna for 80m. 160 meter Inverted L Listening on 80 Meters: New Antenna Prelim's! Put up a 160m inverted L. The geometry actually resembles an inverted L that has partially fallen over – in other words, a “lazy L”. A number of members were big into 160 meters — K4TEA, K4PI, K4UEE and sev-eral others. Definitely more entertaining than the Lifetime Channel! Don’t forget; 160 meters separates the men from the boys, see you there! Tnx for reading, Bob, N4JTE. Made out of aluminum tubing Uses PVC as an insulator Is 32 feet high. Several antennas were used in that period including this 10 meter Johnson "Q" antenna. cut into the reflector of a TV. For example, a 160-meter dipole at 70 feet is only 0. The matching network is mounted on a 4' x4" treated wood post in the weather proof plastic container at the antenna base. Inverted-V Antenna with two 6. Design Configuration Inverted-L with a 6-wire cage for the vertical radiator. Does the type of antenna make much difference? Here is an example: Once in 1959 two of us were involved in testing two antennas on 15 meters. A choke balun between the transformer and the feeder prevents this. Some types of antennas that many have found useful are: 40/80 meter dipole fed with feeders shorted, fed against ground; the inverted “L”; the sloper; 160 meter full size dipole (this requires a big lot!), and a vertical (full size or more likely shortened one such as the venerable AV-18HT “High Tower”. EFHW Antenna Configuration Test Results. So, What of it? The system now up is the same/original inverted-l vertical section with the K2AV folded counterpoise and isolation transformer in place of the prior elevated radial jumble. Currently there are about 32 radials and counting. Effectively 2/2/2 on 20, 2/2/2 on 15 and 4/4/4 on 10). 6 Meter Yagi - 6el LFA on a 34' boom; 40 Meter Wire Vertical. The antenna is fed from an intermediate point a distance from the grounded end. The DOUBLE BAZOOKA SHORTENED INVERTED-L antenna combines the features of a horizontal and a 160 meters. Our antenna was not optimized. Antenna couplers are placed at the antenna, and precisely match conditions of the antenna to the The antenna is 1/2 wavelength above ground. 5m legs - Stockcorner JC-4s remote ATU - 10m symmetric ladder line. Relcomm Motorola Antenna Relay 13. The vertical. 5), for a multi-band antenna. This will expose differences, advantages and disadvantages. Cebik W4RNL (SK), wrote about a coax-fed version of this antenna for 10 meters. A reference antenna must be a known, consistent, reliable, performer. Vertical portion, top insulator and horizontal run can be seen here. In place of an active tuner, a 10 turn 4 inch diameter tapped coil wound of 0. G7LRR Low Band Antennas. "L" Inverted antenna 160 meters band by WB2VUO "This Old Dipole"or Dipole 101 An antenna construction workshop conducted at Marshall N1FN's QTH on Sunday, 8/2/98; 160M Linear Load L Antenna-- By KN4LF; 40M/80M Trap Dipole -- From QRZ · 40M/80M Trap Dipole -- From QRZ. Inverted-V Antenna with two 6. 111 – Helix Antenna. The main category is Antenna for 160 meters band that is about 160 meters band antenna. Figure 3: EIRP for 20dBW (100W) transmitter over HF Figure 4 reveals the major components of antenna system gain. The main station antenna is a doublet with a 240 foot top at a height of 50 feet. Make a 160 Meter plan Make a 160 Meter plan and put it into action now. My (lousy) 160m Inverted-L Antenna. 160m Inductance-Loaded Shortened Dipole. I am active on all bands but only data modes on the higher bands. A Top Loaded Vertical on 80/160 • Split the difference and load a Tee or inverted L on both 80 and 160 (w/tuner) – 90-100 ft is 3/8λon 80M, 3/16 λon 160M – 160-170 ft is 5/8 on 80M, 5/16 on 160M Radial Systems • Provide a return for the fields and currents produced by an end-fed antenna • The earth is lossy, burns transmitter power. 160 Meter Inverted-L Bazooka Antenna A DOUBLE BAZOOKA antenna is an extremely broad-banded Half Wave Antenna that can operate efficiently across an entire Ham band with little change to the SWR. It is not a G5RV because thats a special case with a given length of radiator and feeder. A magnetic loop antenna for 600 khz-4 mhz. 5), for a multi-band antenna. The antenna displays a low feed impedance, which allow you to feed it directly with 50-ohm coax cable. One is for 160 meters, which is 70 feet vertical and 60+ feet horizontal. As a result of numerous experiments he stopped for coaxial INVERTED L (see figure), which gives a vertical polarization and allows you to work without additional adjustment throughout the. 160 Meter Inverted “L” Antenna – Updated 12/30/2020 I have a need to get on 160m occasionally for a contest, but have limited space. 160 meter band was allocated on a primary basis to the LORAN radio-navigation system that began operating in and around the 160 meter band in 1942. Here is the remote control version using relays. This page describes my home made 'Trapped Inverted L' antenna, which is resonant on the 3 lower frequency HF bands 160m, 80m and 40m. 5 m long and 22 m long were found to be ineffective on 160m. The first 32 feet are aluminum, and the second 32 feet is #12 solid copper insulated wire. 6 Vdc Rdl-sr002. Above, the azimuth pattern at 30° elevation shows the effect of the current flowing in the vertical section. On the 160 meter band you better have a. 158 - Tree-Mounted HF Antenna. GM0ONX 6 Band Inverted L Antenna MK3 In January 2005, a few days after replacing my mini quad with a Cushcraft MA5B, the west of Scotland was hit with a major storm. Inverted-L Antennas. I needed to take about 2 feet off the horizontal section to get mine resonant at 1830. I had a 1:1 balun and a 1:4 balun in the parts box. Off-Center-Fed Full-Wave Doublet Antenna. My most recent antenna for top band was an odd shaped 160 meter full wave length loop. Good Vertical Antennas • A straight quarter-wave (Best) –λ/4 ~ 125 ft at 1830 kHz with THHN • Inverted L (Good) –Go straight up as high as you can with a wire, then bend the remaining wire to run horizontal to resonate it • Tee vertical (A bit better than L) –Like an inverted L, but the top is extended in opposite directions. A matching unit can be an antenna tuner, a series matching section, or one of several different kinds of matching circuits at the feed-point. The loop is made of 20 ft. The center-fed inverted-L has the potential to be a quite satisfactory all-band wire antenna suited to certain environments. an Inverted L with 20 or more radials at least 50 feet and hopefully 100 feet long will absolutely smoke any normal height loop antenna or. Antenna for rapid deployment. I want to be able to also use this antenna for 80 meters. 835 MHz is approximately 127 feet. sciencewriter. I made the trap from RG400 coax and PVC pipe. A matching unit can be an antenna tuner, a series matching section, or one of several different kinds of matching circuits at the feed-point. Inverted-L Antennas. inverted Delta Loop Antenna, I never tried such Antenna before, just test it Winter 2005. A popular of 160 meters V inverted antenna verticals. The antenna was not truly a ver-tical, as part of it was horizontal and thus it radiated a horizontally polarized com-ponent. Picture of W4KAZ 160m matching network and transformer junction box in use with 155 foot long inverted L and K2AV FCP The Present…. This one used a T240-43 toroid in a 49:1 impedance matching unit at the base. A Practical Antenna for 160 Metres by G3YCC This aerial is one I have used for top band (160 metres) - it was suggested to me by Alan Inverted-L for 80m & 160m by ON7EQ The antenna is inspired on the 'Battlecreek Special' design, but then limited to 80 and 160m (no 40m section). To solve the impedance problem, a simple L-C antenna matching network can be inserted between the feed line and the half wave antenna wire. If you want to try to use this antenna on other HF bands anyway, you will need to use a wide range antenna tuner to handle the unpredictably high VSWR values. That didn’t. Tower #2 90 foot Rohn 25G. 160M Inverted L. 160m Loop Antenna for TX. 160 Inverted L, Welcome to Winter. Transmitting Antennas The 125 foot vertical: the 160 meter gold standard at least 30-60 shallow buried 120 foot radials 4-square arrays of phased 125 foot verticals very high performance for both transmitting and receiving at least 30-60 shallow buried 120 foot radials for each vertical Tall towers and antennas will significantly degrade the. I have worked over 25 stations in 10 states and Canada from my SC QTH. Does the type of antenna make much difference? Here is an example: Once in 1959 two of us were involved in testing two antennas on 15 meters. Inverted-L Antennas. It�s easy to warm the ground with 95% ground losses on 160. On 3830 for this contest I said about the low bands: ‘an inverted L with some radials fed with a SGC-230 coupler for 80/160m. 160 meter Inverted L Listening on 80 Meters: New Antenna Prelim's! Put up a 160m inverted L. For example, a 160-meter dipole at 70 feet is only 0. Insulators:2. In more practical terms, the average backyard antenna builder is unlikely to lay down a major radial field for the most efficient 160-meter operation. My most recent antenna for top band was an odd shaped 160 meter full wave length loop. First real 160 Meter antenna 170-Foot inverted L with one radial After I was told by most of the members of a local radio club that operating on 160 Meters was impossible from a small city lot, Dick, W8RCM (SK), from the Motor City Radio Club demonstrated and proved that it was entirely possible, though not as. Therefore, many radio amateurs, this band deleted, but during the solar minimum, it is not expected to open a 10 m zone, the error. The matching network is mounted on a 4' x4" treated wood post in the weather proof plastic container at the antenna base. Then, a shunt-fed gamma match at 160 meters could be used on the other side of the tower in tandem with the 80-meter parallel vertical wire for simultaneous resonance at 80 and 160 meters, without sacrificing radia-tion efficiency in either antenna. The recently-added. If 80-meter current flows in the 160 antenna, it tends to flatten. • The G5RV was originally designed as a 3 /2 antenna for use on 20 meters. 5-meter (12. DXCC: WAC:. 835 MHz is approximately 127 feet. This worked quite well when fed with a 4:1 balun at the base and the remote auto-atu. Matching Circuit for P. 9 - Inverted Dipole The inverted dipol e h a$ been and is a popular antenna b e- ca u$<' o f its 14. I think a Butternut is a poor choice for an antenna on 160. My first thought was to make an inverted L for 80m, but the far end would extend off my property and would increase visibility of the antenna, particularly in the winter when there are fewer leaves for cover. It isn't easy to put out a respectable signal on 160 meters. I chose an inductor of 4. The CAROLINA WINDOM is the antenna that has helped put many 160 and 80 meter stations on the map. This gives me the possibility to work on the 80-meter and 160-meter band, using a CG-3000 tuner. With 2,5Kw balun 199,00 euro. Due to the short length, this will probably continue as my only 160 meter antenna at this QTH. In October 2012 I changed my 160 meter transmitting antenna to an Inverted L with FCP (folded counter poise). This is a reading from my RigExpert AA-35 ZOOM of my EFHW 40-10 inverted L with radials, and feedpoint 2 feet above the ground. Reason; given for the responses were, "Because of signal comparisons and past experience. with excellent low angle DX performance, closely matching a full size dipole installed at the same height. Fortunately I have access to two pine trees that are well positioned as antenna. At the base of the antenna is a remote RF-sensing automatic antenna tuner, which manages to match the antenna quite well on all bands from 160 through 6 meters. So what is it ? G7FEK’s original “Nested Marconi Antenna” was first designed in 1988 and comprised two quarter-waves in parallel, fed against ground in inverted L. 80m Inverted-L Antenna (Base-loaded for 160m) Click here to jump to latest news on this antenna My coaxial-dipole would just about tune up on 160m but its replacement, a standard 40m half-wave dipole wouldn’t. A tuner may be needed on 160M and the 3. Antennas, It Was Big Enough (Smithson KN4TX), CQ 1997, Jun pg 42. , a zig-zag OCF dipole. Vertical portion, top insulator and horizontal run can be seen here. I'm now very intrigued with the 4-ele Hi-Z array. First let’s look at my ¼ WL 160m vertical. My antennas are an inverted vee for 40 meters and an inverted L for 80 meters. 5m legs - Stockcorner JC-4s remote ATU - 10m symmetric ladder line (Wireman 450 Ohm) - 6. The inverted L sets the standard for 160 metre antennas but the draw back is getting a good ground radial system. For low matching network loss, the Q of the matching/tuning elements should be significantly So in many ways a lower Q antenna is more advantageous, but only if the Q decrease originates from increased radiation and not from higher. Here are EZNEC patterns and gains for the illustrated Inverted "L" configuration: 80 Meter Pattern 40 Meter Pattern. My first thought was to make an inverted L for 80m, but the far end would extend off my property and would increase visibility of the antenna, particularly in the winter when there are fewer leaves for cover. Every antenna is a set of compromises. Good luck, Charley W1TE _____ Loss on 160 from a 2:1 SWR probably isn't worth the trouble of setting up a matching network at the antenna, unless you have a tremendously long run of high-loss coax. 5mm2 lenghts of wire I had from my previous vertical antenna radials' installation (8 x 48M). Specifications: Size(machine):~150*90*40mm(L*W*H) Net weight:0. 8-300 MHz Ni4L. sciencewriter. Click on the image to enlarge it. Tower #2 90 foot Rohn 25G. Reading end-of-August 160 meter plans and antenna speculations, it's interesting that one reflector's most popular thread concerns 160m four squares. Ham Radio 40/80/160 Meter Inverted V Dipole Antenna. 5K End Fed Long Wire Antenna. 156 - Very Low Frequency Inverted-L Antenna. , a zig-zag OCF dipole. Using the accepted formula of 468/f, the length of a dipole. Keep the lowest end of the antenna at least 6 ft. Many thanks to all and especially to Oleg, Ham's spirit is still alive ! The full installation is here: - One coconut's tree 7-8 m high. Introduction Most monopole antennas commonly refer to quarter wavelengths (λ/4); derivatives of dipoles where one element is folded into the ground (GND) and serves as the second radiator [1] [2]. An inverted L antenna is a simple type of antenna that can be used to send or receive at a wide range of frequencies. 6 Vdc Rdl-sr002. Base matching on 160 and 80 will produce the highest efficiency, unless some form of hat or top loading wire is used. Autumn 2005 i put up an 1/4 wave inverted L for 160m. m Antenna “extension” Coil. Smallest 40 Meter Beam Antenna. Amplifier: Heathkit SB1000 10 - 160 meter @ 1 kW amplifier. 160m Capacitance Loaded Vertical Antenna. No transmission line. The transmitter had a pair of T-40 tubes on 10 meters and a pair of 211Es on 160. 98 Quick View HF Choke Line Isolator 1. 5MHz or 2-4. " I also exchanged some correspondence years ago with Fred Bonavita K5QLF (SK), another QRP Hall of Famer and fan of the Up and Outer. We have amateur satellites providing links from 2 meters and up, and these provide opportunities to use antennas of. Ham Radio 40/80/160 Meter Inverted V Dipole Antenna. It is all-band and for practical purposes omni-directional. Try it out, the inverted L is as cheap as it gets and will give you a horizontal and vertical sky wave easily matched to coax. Specifications: Size(machine):~150*90*40mm(L*W*H) Net weight:0. • It was used as a multi-band antenna because when fed with ladder line (not coax!) it is easy to match the on any band from 80m to 10m • A G5RV used as a multi-band antenna should be fed with ladder line. For low matching network loss, the Q of the matching/tuning elements should be significantly So in many ways a lower Q antenna is more advantageous, but only if the Q decrease originates from increased radiation and not from higher. 5 was obtained: Vertical 80m balloon antenna, G1EXG. exe program that can be used to predict feed line and Put up a vertical (or inverted-L) instead, with a good radial ground system under it. These slides review the Vari-L method to combine 'flagpole' and 'flat-top' to form an Inverted L in a motorized configuration so that the antenna can be tuned to any ham band; 75 – 10 meters. It was fun, except for the S5 white noise! KC2WUF : 100W entire contest : KD1XH : First time in this contest. The vertical length is 60 feet and the horizontal is 30+ feet. "L" Inverted antenna 160 meters band by WB2VUO "This Old Dipole"or Dipole 101 An antenna construction workshop conducted at Marshall N1FN's QTH on Sunday, 8/2/98; 160M Linear Load L Antenna-- By KN4LF; 40M/80M Trap Dipole -- From QRZ · 40M/80M Trap Dipole -- From QRZ. To solve the impedance problem, a simple L-C antenna matching network can be inserted between the feed line and the half wave antenna wire. 99 Buy It Now 1d 20h. The antenna can therefore be matched by creating a fixed inductor at say the centre and moving it up or down until you have a good match on your desired frequency. Created by Bob Raynor, N4JTE on 2012-10-30. The antenna is a folded inverted-L antenna (ILA). 6 illustrates a graph 600 of simulated magnitude 612 and phase 614 of complex reflectance versus frequency 610 for an embodiment of an inverted-L antenna element coupled to an impedance matching circuit (e. How to build and tune a 40 meter Inverted V wire dipole HF antenna. I think a Butternut is a poor choice for an antenna on 160. 160m inverted L current 160m inverted L frequency plot Matched with a 2:1 balun, to give a 100 ohm feedpoint impedance, this antenna shows a great SWR on the 160 meter band and a vaguely reasonable SWR on the 60 meter band. It could be a sloper but. 8-14 MHz) bands without reconfiguration. Operating 160-meter NVIS. Let’s look at a very simple solution that I think is the most useful and most elegant solution to use. The 6-160 Meter HF J-Pole. So what is it ? G7FEK’s original “Nested Marconi Antenna” was first designed in 1988 and comprised two quarter-waves in parallel, fed against ground in inverted L. An inverted-F antenna is a type of antenna used in wireless communication. I have built the Multi-Element Inverted "L" Antenna Using an ICE-180 Matching Transformer. 86 - Fan-Dipole Antenna for 80m to 6m. Inverted-V Antenna with two 6. radio and to and from the antenna. Просмотров 487Год назад. 5 was obtained: Vertical 80m balloon antenna, G1EXG. On 160 Meter TOP BAND I made nearly 200 QSOs on my trip to Kangerlussuaq. Builda 12/17 Meter Trap Dipole, AD5X I wanted a self-supporting rotatable dipole for best performance on 12/17 meter as well: Frame receiving antenna 80 m In the construction of the magnetic frame antenna and its impedance match with the preamplifier, a PSV standing wave ratio of less than 1: 2. The other antenna that W4BXI likes to use on 160 m is a center-fed inverted L using ladder line. This tower supports ropes for 80-meter antennas, and very long ropes that support four 1/4 wave tall vertical elements for a 160-meter four square. "L" Inverted antenna 160 meters band by WB2VUO "This Old Dipole"or Dipole 101 An antenna construction workshop conducted at Marshall N1FN's QTH on Sunday, 8/2/98; 160M Linear Load L Antenna-- By KN4LF; 40M/80M Trap Dipole -- From QRZ · 40M/80M Trap Dipole -- From QRZ. The computer simulations showed that the 80-meter antenna would have. Stico Glmt-sb-vhf/cel Covert Glass Mount Vhf 136-174 806-896 Mhz Antenna 482476. 9 mhz) Helically wound vertical Loaded vertical or dipoles Capacitive end loading Inductive series loading Use a shortened monopole or dipole and have a heavy duty transmatch (tuner). 99 Buy It Now 1d 20h. Relcomm Motorola Antenna Relay 13. A choke balun between the transformer and the feeder prevents this. 6 illustrates a graph 600 of simulated magnitude 612 and phase 614 of complex reflectance versus frequency 610 for an embodiment of an inverted-L antenna element coupled to an impedance matching circuit (e. EFHW Antenna Configuration Test Results. Dipoles for 160 Meters Get on the "top band" with limited real estate— build one of these shortened dipoles. The new ~200-foot Rohn 45G tower in the center foreground is the new main omni-directional 160-meter antenna. This is an End Fed Long Wire wire antenna that will cover all bands from 160 to 6 meters, including the WARC bands, as well as 60 meters and MARS frequencies. At the least, a dipole should clear any sur- rounding buildings, and other large obsta- cles, for good performance. P roject "Be fast and easy QRV on the 160-meter band". A popular of 160 meters V inverted antenna verticals. This link is listed in our web site directory since Saturday Jan 31 2009, and till today " T antenna with matching network for 160 m " has been followed for a total of 3293 times. It incorporated a pair of 807's in the final putting out 100 watts. The horizontal wire component measured about 160 feet long, distributed in a spiral fashion around my small lot. It is all-band and for practical purposes omni-directional. 160 meter Inverted L Listening on 80 Meters: New Antenna Prelim's! Put up a 160m inverted L. 8 nH • EM260 0. (The advice regarding the use a feedpoint balun pertains to the Inverted Vee as well. First let’s look at the theory. I asked him about the antenna and was told that it was a 160 meter 3/8th wave, inverted ‘L’ antenna. Generally, 45 degree inverted Vees are the best compromise. Make a 160 Meter plan Make a 160 Meter plan and put it into action now. 8-Band OCF Antennas Our 8-Band antennas support 160, 75/80, 40, 20, 17, 12, 10, & 6 meters. It is sort of an inverted L. Inverted L antenna for 160 meters topband. (antenna, coax and counterpoise lengths) How to match the antenna to coax cable (matching unit values and placement) Choosing a configuration that fits the location (vertical, sloper, inverted L, horizontal options) Choosing a feed line choke or noise filter (selection and installation) How do these steps apply to your end fed?. Curtain Type Antennas HALF SQUARE, DOUBLE HALF SQUARE AND BOBTAIL CURTAINS! By WB3AYW. In fact, all ¼-λ antennas fed against ground require a radial system if losses are to be kept low. Figured I'd post a quick update and will commence testing on 160 this evening with a definitive build. It is always a good idea to feed Vertical and Inverted-L antennas through a Common Mode Current Choke. So, for an Inductive X of 212 ohms, that translates into a needed C. Major antenna pages. This will be a bit more in the near future, but … Continue reading. I wanted to test a temporary / portable setup to participate in 80 / 160m contests. htm 08/13/2009. ” However, 160-meter antennas can be large and difficult to install due to lack of available space. I have tried many types. Even fewer have room for a dipole up at least half a wavelength above ground. There are two selectable "counterpoise" wires, connected to the BALUN. 80 Meter End Fed Antenna. It is not a G5RV because thats a special case with a given length of radiator and feeder. Having driven my ham radio budget into the red with the tower project, I have resorted to using a freeware antenna modeling program: MMANA. In a prior blog, I characterized its receive performance, which was worse than a lower and shorter inverted L, and worse than both my 250′ and my 500′ Beverages. 8 nH • EM250 0. On frequencies below 18MHz the inverted L performed better than the G5RV, but on 18MHz and above it was much worse. It was nice out this weekend so I started a project of an HF wire antenna in the back yard. The main station antenna is a doublet with a 240 foot top at a height of 50 feet. The folded unipole antenna was first devised for broadcast use by John H. I think a Butternut is a poor choice for an antenna on 160. It isn't easy to put out a respectable signal on 160 meters. This equipment was used until World War II. Ham Radio - 80 160 meter magnetic loop transmitting antenna. 160 Meter Inverted "L" Antenna « on: October 28, 2017, 09:07:26 AM » Just to continue to bore the readers of UnchainedPreppers, I have decided to nix the Delta Loop and Sky Wire Full Wave antenna and go with an inverted "L" antenna to get on the air for 160 meters. On frequencies below 18MHz the inverted L performed better than the G5RV, but on 18MHz and above it was much worse. 80m Inverted-L Antenna (Base-loaded for 160m) Click here to jump to latest news on this antenna My coaxial-dipole would just about tune up on 160m but its replacement, a standard 40m half-wave dipole wouldn’t. Much better to use a 1/4 wave inverted L antenna with ground radials under it. Antenna for a range of 160 meters with a low height of suspension. Short Antennas for 160 Meter Radio dares to discuss the possibility of smaller antennas for this intriguing band. The Inverted-V antenna is great for NVIS (Near Vertical Incidence Skywave) regional radio contacts and will work also for long A coil-loaded 40/80/160 meter inverted V dipole antenna. Alpha 6-160 antenna pdf manual download. The reception will be good on some bands, and rather lousy on others… this is predominately due to variations of the antenna impedance at different frequencies. My first thought was to make an inverted L for 80m, but the far end would extend off my property and would increase visibility of the antenna, particularly in the winter when there are fewer leaves for cover. There are a lot of 160 designs out there on the internet with quite a few adding coils etc to match shorten verticals, or top loading with various configurations. As you can se on the Azimuth picture to the right (Click for enlargement) this is a distance of 7205 KM - quit a lot with the simple Inverted-L antenna. 160M Inverted L. A large part of the U. The dimensions of the inverted L antenna for 160 meters. On the tower this time, not on the wiggling aluminum tubing. 30 Watts QRP, 40-10 Meters, 66 feet. Does the type of antenna make much difference? Here is an example: Once in 1959 two of us were involved in testing two antennas on 15 meters. The matching network is mounted on a 4' x4" treated wood post in the weather proof plastic container at the antenna base. Using the accepted formula of 468/f, the length of a dipole. Inverted L. Its only disadvantage is that in a city or town environment it is sensitive to locally-generated noise on 160 and 80 metres. inverted-L antenna system. Cell Tower. provide one of the strongest and longest lasting antenna wires, by DavisRF in Haverhill, NH. 132ft inverted L. I often wonder why anyone would buy such an antenna. Although many antenna experts recommend a slightly longer length for the radial wire (about 5%), I decided to keep the radial wire the same length as the antenna element (33-feet/10. Just a ground rod, and a 1:1 balun and using the internal tuner on my Icom 756 Pro III. Europe, Australia, and Asia on 160 meters from my mobile, and my 160 mobile antenna is less than 1% efficient. Hex Array - 80/40 meters Vertical. Yagi’s – Beams (Including multibands) NA4L 40 METER 3 ELEMENT QUAGI. I chose the Magnum 160 VX2 vertical from Force 12 for my 160 operation. Wire beams 6-1 160-Meter DX with a Two-Element Beam 6-3 Beams with Inverted-V Elements 6-4 40 Meters with a Phase Delta Loop 6-6 The 160-Meter Receiving Antennas 9-1 The Classic Beverage Antenna Revisited 9-8 Antenna Hint for DXers 9-9 Is This EWE for You? 9-12 More EWEs for You. Many thanks to all and especially to Oleg, Ham's spirit is still alive ! The full installation is here: - One coconut's tree 7-8 m high. Cebik W4RNL (SK), wrote about a coax-fed version of this antenna for 10 meters. ’ There you go. DX Commander on Top Band (160m) - Part 5. 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. Terminated Sloper Antenna. Antenna for ranges from 10 to 160 meters. Ohm's law showed my antenna feedpoint resistance was about 49. Antenna Tuners: LDG Z-11 Pro Auto Tuner LDG AT-600 Autotuner Palstar AT2K MFJ 921dual band VHF tuner MFJ 945E HF tuner. 20 And 40 Meter Vertical Antenna. Matching devices at the antenna.