This particular design appealed to me because although having seven elements, was shorter than other designs i had seen. The yagiuda antenna was named an ieee milestone in 1995. These are called the characteristic modes, which provide deep physical. Yagi antenna design program by wa7rai called quick yagi qy4. There is one scheme that i have yet to see mentioned. The most interesting part of the software is, it can help you to improve your design by projecting the antenna radiation pattern and estimating the radiation resistance. A quick way to obtain a designed antenna was to use the qy4. It is shown that a threeelement yagi can achieve a realized gain of more than 6.
And started cutting some copperbronze welding rod to lengths. Ham radio india software collection large collection of antenna software. Radio india software collection large collection of antenna software. Yagi antenna design program by wa7rai called quick yagi qy4 this antenna progam is. Yagi antenna design program by wa7rai called quick build a. By wa7rai introduction to the qy4 yagi design program. Design yagi antennas with this computer program by wa7rai. Very complicated yagi designs were developed to give adequate gain over the broad television bands. Its long, slim shape is awesome for mounting on a tripod and perfect for taking along on longer hikes. Doug vk3um was a friend from our days at unley high school during the mid 1950s, a common interest was that of radio and electronics leading to our introduction to ham radio through the 288mhz band now no longer part of australian allocations. Despite being written for ms dos, it is surprisingly user friendly, highly accurate, and is loaded with features. Vk5djs yagi calculator yagi design frequency journal vk5djs yagi calculator yagi design frequency 787. Quick yagi via wa7rais home page yagi autodesign, autooptimize, modeling software. Nowadays, in the 64bit era, with the advent of windows 7 and higher, running a old.
Jim boyden, ab0ge, employed it in the three element 369 40 meter wire yagi he developed. How to observe meteors using junked gear by bruce mitchell. A major drawback was the yagis inherently narrow bandwidth. Fig 2the common dialog window for selecting a yagi file. Ham radio station g0vfs 2 meter 7 element yagi for the qth. So i was very surprised in june 2003 to come across, while looking for something else on the web, a file called yagicad, which sure enough was my program, but strangely it was version 4. Quick yagi via wa7rai s home page yagi autodesign, autooptimize, modeling software. The 369 wire yagi an alternative yagi tuning scheme. Basic yagi antenna design for the experimenter antenna. Its very suitable to vhf antenna modelling and even if it is very old it is still very popular. The yagi uda antenna is the most recognized antenna. As is standard windows practice, doubleclick on the filename to open it, or singleclick on it and select open. Quick yagi via wa7rai s home page yagi autodesign, autooptimize, modeling software all about morse code whether youre a died in the wool cw fan, or a beginner who wants to learn about the morse code, have a look at some of the following morse and cw related links. March 20, 2015 no comments downloads ham radio deluxe software.
Quickyagi yagi modelling software by wa7rai wa7rai wrote this yagi modeling program in 1990. So i was very surprised in june 2003 to come across, while looking for something else on the web, a file called yagicad, which sure enough was my program, but. Time is ripe for a renaissance of electronics clubs. The basic yagiuda array antenna consists of a parallel set of linear dipole radiators. This 6 meter 6 element ssb yagi was designed and optimized for best feed match using. K6sti produced yo yagi optimizer and ao antenna optimizer, mininec based programs. Though it is not as accurate with antenna temperature and gt as the tant program. I used mine to pin down the problem ofan electric garage doorthat mysteriously flewopen at 5. Oct 08, 2014 download yagi lightweight program that provides users with a simple means of calculating various parameters pertaining to your yagi uda antenna. Dec 29, 2015 an application designed to generate data for the construction of long yagi antennas for vhf and uhf use.
The dl6wu yagi is highly regarded as being easy to build with repeatable results. It radiates in only one direction and is most commonly used in pointtopoint communications. Other explanation, the quads takeoff angle is different than of the one of the yagis and so picks up anything from another angle. Quick yagi via wa7rai s home page yagi autodesign, autooptimize. It produces maximum gain but requires tweaking for the number of elements. Yagi calculator is a program build to produces dimensions for a dl6wu style long yagi antenna. Download scientific diagram spacing effect on a twoelement yagi antenna. The origin of this so called white noise is unclear but amateurs think that it could be related to manmade interferences emitted by a nearby town. Amateur radio software download indias leading amateur radio news letter. A yagiuda antenna, commonly known as a yagi antenna, is a directional antenna consisting. This activity is also called radio direction finding. Although it was intended that an old tv beam be used to build this antenna, i had already bought some aluminium with the building of a 2 meter yagi in mind, though not yet having decided on any design. Yagi antenna design program by wa7rai called quick yagi qy4 it was designed and optimized using 144.
Without knowing more about the signal field at your location, i cant comment on why some come in and others dont. I cant seem to find a simple dual band yagi made of cheap, easily sourced materials. The 369 wire yagi an alternative yagi tuning scheme there have been numerous articles discussing schemes for tuning and feeding yagi antennas. Full text of 73 magazine october 1991 internet archive. Jan 06, 20 yagi optimizer is an old dos program made more than 20 years ago bya k6sti made to analyze and design antennas. About dl6wu stacking yagi calculator the resource is currently listed in in 3 categories.
A quick scan of boston ma at shows youre all uhf for your locals so these are the right kinds of antenna. Dl6wu stacking yagi calculator resource detail the. The rapid evolution in the wireless communication systems requires more. Download scientific diagram monopole version of the yagi antenna. Software, elnec antenna modeling and analysis by w7el. Tv antennas are still a major application of the yagi antenna. Sstv software wa7rai called quick yagi qy4 it was designed and optimized using 144. Free download and information on yagi yagi can help you to design multi element yagi antennas.
The rfi range of high gain yagi antennas feature standard aluminium, ruggedised aluminium or stainless steel construction. Apr 14, 2010 on the other hand, i have constructed the so called cheap yagi of wa5vjb before, and its feed is very, very simple. For the home constructor, the design by dl6wu is a premium choice. These yagis are unequalled in terms of matching and broadband performance, both on transmit and receive and the, db gain, and the radiation pattern. The main category is ham radio directional yagi antennas that is about yagi antennas for ham radio use, manufacturers, plans and design. Download and unzip the program into a folder of your choice if using windows xp. Antenna design freeware 1d and 2d arrays from mei software. I also mention yagi analysis by sm2iev, because in its time it made an impact on the vhf uhf yagi developer scene. The best yagi uda antenna modelling software today i want to share with you a great yagi uda antenna modeling software for amateur radio operator and enthusiast. This article below was written by wa7rai and will serve to introduce you to a computer program for designing yagi antennas that you can download. Apr, 2020 yagi calculator is a windows program that also runs well on linux, ubuntu 8. Uhf eggbeater antenna ham radio 2m70cm vertical dipole antenna youtube a simple ham radio 2 meter and. Lil kesh for you after much anticipation, fast rising rapper lil kesh has confirmed that his debut album y.
This socalled trap has the effect of truncating the element at the higher frequency band. Yagi calculator is a windows program that also runs well on linux, ubuntu 8. Long yagis are commonly used from the 144mhz amateur band to the 2. The older quick yagi program was used in its design. Two stock klm 610 antennas with 35 vertical separation before optimization data is frequency, free space gain, fb ratio, impedance and 50 ohm swr thru 4. Oct 12, 2009 wa7rai wrote this yagi modeling program in 1990. Although this program is free of charge, please make a donation to help maintain this website so he can continue to keep it available to. As you will notice on the quick yagi output the boom had to be over 1. Ham radio boxes and antennas alexandria radio club. Apr 08, 2017 get the qy4 yagi design program for download. Although this program is free of charge, please make a donation to help maintain this website so he can continue to keep it available to the ham radio community.
To be used with either nec4 or yagi optimizer modeling programs. Ideal for point to point, short or long link applications. The undefined acronym abbreviationslang yw means yagi for windows. Long yagi are commonly used from the 144mhz amateur band to the 2. Yagi antenna design program by wa7rai called quick yagi qy4 this 6 meter 6 element ssb yagi was designed and optimized for best feed match using 50. A yagi antenna is a directional antenna consisting of a driven element such as dipole or folded dipole and additional parasitic elements, typically a reflector and one or more directors.
The main category is antennas for vhf uhf bands that is about antennas for vhf and uhf radio bands. On august 20, 2000 i made my very first satellite radio contacts through ao10 using only my cross yagi as shown in the photo at the bottom of this page the 16 ele horizontal yagi was not used. Ive used it to verify some antenna plans ive found on the net. The leftmost element is slightly larger than resonant length and is called.
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