Yagi optimizer is an old dos program made more than 20 years ago byak6sti made to analyze and design antennas. Its very suitable to vhf antenna modelling and even if. Eh antenna father ik5iir sk iw5edi simone hamradio. Designing eh antenna ham radio antenna, all band, nikola tesla, activities, radio. The theory of the antenna will be found in the theory section of this web site. A directional eh antenna for hf thank you to frank sessink pa0fsb for submitting to us his document describing the k9ay loop antenna pdf, which is the antenna that he successfully uses with his rtlsdr for hf reception. It has two cylinders made from aluminum flashing 30 long, wrapped around pvc pipe. This link is listed in our web site directory since wednesday oct 2004, and till today eh antenna calculator has been followed for a total of 19756 times. Well this may be the answer that you have been looking for its called an eh antenna and is based on an ideas by ted hart, w5qjr and maurice hatley. Here we describe a typical antenna assemblies made up for 20 and 40 metres. Amateur radio document library, antennas, schematics, homebrewing, connections. Dos, the software has a very good graphical interface and every component. The new etherhaul 8010fx eh8010fx is with 10 gigabits per second gbps full duplex capacity, and operating over the interference free 7080ghz eband spectrum, the new etherhaul 8010fx provides a reliable fiber extension solution where fiber exists, and greenfield gigabit connectivity where there may be no fiber at all. Eh antennas are vertical antennas, so the azimuth diagramm is similiar to any omni directional antenna.
The passband of the eh antenna turned out to be 910 khz at a level of plusminus3db, and 1,1 mhz on the level of swr1. This particular little wonder is not going to put out masses of power as it stands but it is surprising how well it works. This document was prepared to briefly explain the concept. Internal automatic antenna tuner internal high speed automatic antenna tuner included in the package. Antenna software loaded antenna software by w7el antenna software from qrz cubical quad antenna calculator emmcap software eznec 3. Siklu eh8010 series 10 gbps full duplex the siklu eh8010 is a powerful yet compact, poe capable 10 gbps rf solution. Works either in standard and metric units, and let you choose on material, and loop. Aug 29, 2016 download fdtd antenna simulator for free. Zippiro antenna for 40 meters very compact and high efficiency antenna,very low radiation angle even at low height. To put this in proper perspective, the equivalent circuit is shown in fig. The main category is antenna design calculators that is about antenna design calculators. The elevation diagram is comparable to that of any traditional vertical antenna, e.
This is due to the fact that siklu was the first in offering advanced products to the market, as well as leading performance in delivering multi gbps connections over miles of distance. Having had a gem quad hf 201510m for a few years, back in the early 80s, i can testify to the quads slight advantages over a tribander yagi with the same number of elements. Comparision with halfwave dipole, both antennas in same hight, 12 mtr 39. I am the network director of the world family of radio.
This is a picture of my eh star antenna for 80 meters. The antenna tuner uses a lc switching network that has a large capacity 100 channel memory. Founded in 1998, the company was acquired by pegasystems in 20. The new etherhaul 8010fx eh 8010fx is with 10 gigabits per second gbps full duplex capacity, and operating over the interference free 7080ghz eband spectrum, the new etherhaul 8010fx provides a reliable fiber extension solution where fiber exists, and greenfield gigabit connectivity where there. The poynting vector synthesis pvs theory at the basis of the eh antenna working principle seem not to be survived to any scientific investigations read i1rfqs. Fdtd antenna simulator is a complete software package for antenna analysis and design using the fdtd method.
Those tests indicated that the initial eh design for the broadcast band is not an efficient radiator. About eh antenna calculator the resource is currently listed in in 3 categories. Lw,mw and sw this antenna is receive only for shortwave listeners. The tuning data is automatically memorized to reduce tuning. The suite of software in the siklu software tools package meets these challenges with our portfolio of software systems. The eh antenna, patented by ted hart w5qjr link to patent, is still today the subject of discussion since the beginning of the new millennium link to official page. Software antenna software defined radio swr meter system of grounding theory traps tower. Eh antenna this is a picture of my eh star antenna for 80 meters.
The intellectual property of antenna software includes 7 registered patents primarily in the computing. The eh antenna is a unique concept that allows the design of high efficiency broad band antennas that happen to be small. My interest in investigating the eh antennas started because i was interested in. Eh antennas category is a curation of 34 web resources on, a 10 metre eh antenna, small multiband iek antenna, w8ji technical pages. The connector is a pl female jack on the side of the antenna. Eh antenna calculator calculate eh antenna components dimension with this online from, in french. Introducing the new 10gbps etherhaul 8010fx siklu ltd. Mac antenna master professional series antenna analyzer automate and animate your. It has two cylinders made from aluminum flashing 30 12 long, wrapped around 2 2. Antennas, 1ft eband antenna for etherhaul radios, supports. Jul 21, 2018 a hawaiibased amateur radio blog focusing on the theory, design, and use of homemade antennas. Almost, because it contains a lot of good information that can not be found elsewhere but is still a work in progress.
Ive know personally stefano since he was member of the local radio club here in firenze. In part one of this series, i covered the use of one brand of commercially available, small transmitting loop antennas, also known as magnetic loops. By the way, one learns that there is more to an antenna system than the antenna itself. About eh antenne the resource is currently listed in in a single category. Antenna software was a business mobility solutions provider with headquarters in jersey city, new jersey and offices in guildford, bangalore, seoul, boston, toronto and krakow. Best software for ham antenna simulation time owned. Mcdonald, professor of physics at princeton university, provides a model and some pattern diagrams of an eh antenna. Additional material was added for the following topics. Nowadays, in the 64bit era, with the advent of windows 7 and higher, running a old. The performance of the eh should equal a conventional antenna.
Use the elementnumber and termination property to calculate the embedded electric and magnetic fields of the antenna element in an array connected to a voltage source. He named therefore the eh antenna an expensive dummy load. Home made high power magnetic loop antennas amrron. Mac antenna master professional series antenna analyzer. Other useful information would include your experience with similar products, infomation on a product that you would purchase instead of this one, and so on. Buy products related to usb wifi antenna for linux products and see what customers say about usb wifi antenna for linux products on free delivery possible on eligible purchases. He can be considered the european father of eh antennas, since along to ted hart w5qjr was the main promoter and inventor of eh antennas.
Find a wide selection of antennas at winncom technologies corp. The signal hunter is a simple and easy to build multiband antenna for swl. We offer a wide range of siklu products like 1ft eband antenna for etherhaul radios, supports 7176 and 8186ghz frequencies, fccetsi at affordable prices. The paper also provides a list of useful references. Wire antenna construction methods antenna modeling software mininec, winnec, and eznec for windows. Magnetic loop antenna for 16040 meters 1kw youtube. Below the cylinders are two coils for matching and developing the eh field. Pair of 45,000 volt vacuum caps tuning a 12 foot diameter loop, showing construction of capacitor tuning cabinet. With the feed line choked, steves eh antenna dropped 3 sunits in addition to the original 10db from his sloper, or maybe 25db or more. Etherhaulkilo series learn more the siklu kilo series products are the most widely deployed 7080ghz radios in the world. Jan 06, 20 yagi optimizer is an old dos program made more than 20 years ago bya k6sti made to analyze and design antennas.
A portal that hams think of as the first place to go for information, to exchange ideas, and be part of whats happening with ham radio on the internet. Ted hart, w5qjr the book on eh antenna, page 112 eh antenna, the book updated on 12oct02 following is an almost book on the eh antenna. Smarthaul wireless network design engine, link budget calculator and financial analysis calculator and element management system. Additionally, antenna software has registered 6 trademarks with the most popular class being scientific and electric apparatus and instruments. Eh antenna promotions are part of the tradition of timeless herbal wisdom, famous among travelling doctors, as seen on the popular tv show technology of the old west. To boil all of the theory down to its most simple terms, the eh antenna and the basic patent is based on the simple concept that a 90 degree phase shift not a phase delay network between the two halves of the antenna will cause the electric e and magnetic h fields to be in phase at the antenna. Siklu eh8010 series 10 gbps full duplex siklu direct. There surely is a hidden message in all of the above contradictions.
Source code and windows executables are available to download. To build the largest and most complete amateur radio community site on the internet. About eh antennas for 50 mhz the resource is currently listed in in 2 categories. Oct 03, 2006 on 2nd october 2006, stefano galastri ik5iir, passed away. It is the intent of this document to extol the virtues of the antenna in a perspective directly applicable to am. Its very suitable to vhf antenna modelling and even if it is very old it is still very popular. The main category is eh antenna plans that is about eh antennas. Ac6la moxgen moxgen will show you the dimensions and generate an antenna model file for a 50 ohm moxon rectangle antenna, given the design frequency and wire size. This antenna has the problem with a strong returning rf in to coax. The first benefit you get from using a good antenna design program is a much better understanding of all the parameters and compromises that go into the design of an antenna system.
On 2nd october 2006, stefano galastri ik5iir, passed away. Magnetic loop antennas for the radio operator with limited space pt. For that article, i bought the very popular alexloop walkham antenna. The eh star on the roof terrace ham radio antenna, ham. Rtlsdr rtl2832u and software defined radio news and projects. He named therefore the ehantenna an expensive dummy load. One outcome of that thinking in small efficient antennas is the tubular dipole which has been named the eh antenna. View antenna display, showing the wires making up the model of the fiveelement beam, with currents and 2d slice superimposed to show orientation. These fields are calculated at specified points in space and at a specified frequency.
Broadcast engineers want to know and understand how the eh antenna works and what it can do for their radio station. Antenna scatterers analysis program, is a free general purpose antenna analysis software program for numerical electromagnetic antenna design, modeling and analysis. This link is listed in our web site directory since wednesday may 22 2002, and till today eh antennas for 50 mhz has been followed for a total of 21223 times. Appendix a of, crossedfield and eh antennas including radiation from the feed lines and reflection from the earths surface, by dr kirk t. Many physicists, engineers and amateur radio operators have investigated about its properties, using different approaches and tools. There are many examples where designers intentionally use commonmode currents. Antenna software by w7el antenna software from qrz cubical quad antenna calculator emmcap software eznec 3.
Tests on an eh antenna and compared to a standard broadcast antenna at radio station wkvqam, eatonton, ga. This is on the face of it a large breakthrough in technology. The eh antenna provides a unique combination of improved efficiency and real estate conserving features to make the antenna attractive to old and new hams alike. Eh antenna calculator calculate eh antenna components dimension with this online from, in.
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