This up and over, over and down design had been used in hf wire antennas. Stacking, phasing and ma tching yagis this is a synopsis of a talk presented to the sydney vhf dx group on tuesday march 16th 1999 by gordon mcdonald vk2zab. You wont find a yagi with that much gain that will turn in that little space. Rf toolbox dipole, yagi, vertical, cubic quad, log periodic, jpole. Antenna software rf calculator page, these are all. Nowadays, in the 64bit era, with the advent of windows 7 and higher, running a old. This is where you input the center frequency in megahertz. Jan 06, 20 yagi optimizer is an old dos program made more than 20 years ago bya k6sti made to analyze and design antennas. Due to material, i decided on a 5 element yagi built for vhf since all i would have to buy is more 38. You could use 4nec2 software to make frequency and rh as constants and look for other variables for best results, but it doesnt worth a fuss. Antenna experts manufacture quad stacked yagi for 75mhz, 150mhz, 350 mhz, 450mhz, 550mhz, 650mhz, 700mhz, 850mhz, 950mhz, gps l1 band, gps l2 band, 1450mhz, 1850mhz, 2100mhz and 2450mhz frequency bands.
Enter the desired frequency then click on calculate and the optimum values for that combination will be displayed in feet, inches and fractions of inches, and in meters. The dl6wu yagi is highly regarded as being easy to build with repeatable results, broad bandwidth and a useful pattern. When a quad antenna is properly tuned the lobes off the back of the quad can be brought to a smaller magnitude then is normally found in a yagi array. The cubical quad antenna calculator for citizens band cb radio and amateur radio communications to calculate the spacing between the reflector and driven elements and directors. Yagi calculator is my favorite software because it provides more detailed results compared to other software. The dimensions of the square are adjusted so that the antennas resonates at the intended frequency of operation. Antenna design calculators category is a curation of 83 web resources on, parallel square conductor transmission line calculator, magnetic loop excel sheet, analysis of antenna mast strength and bending stress. Kitchen design software is technical kitchen design software capable to draw different room layouts, floor designs for modern kitchen in less time.
This program uses different formulae for 2, 3 or multielement designs and includes element tapering verticals covers all the common types with a coil calculator built in for the antennas that require them. I just replaced my original version quad with a new v3 version that is 30% smaller and almost as much gain. If tuning gap is present on the parasitic elements, doesnt the placement of this gap effect the polarization. Some minor changes to limits in antenna temperature figure of merit calculations. So be aware just like wire antennas, see 140 varieties here there are lots of yagi antenna designs, some good, some ridiculously hard to build, some simple and some completely ineffcient. Yagi calculator yagi calculator is a windows program that also runs well on linux, ubuntu 8. Antenna calculator and design software electroschematics. Transmission line calculator coil design lc filter design transmission line loss l matching networks pi matching networks impedance calculations.
G0ksc free antenna designs for ham radio g0ksc simple to build, high performance yagi and quad antennas home of the lfa yagi free yagi antenna designs for ham radio shop. Rf toolbox is an antenna design and electronicselectrical tool package for macintosh and windows. Jul 28, 2017 2 meter antennas for directional, semidirectional, the web site below contains a free download software tool for designing a directional yagi antenna on 2 meters. Save your time and do antenna with what ever you got, you will still gain a lot of it even with a huge inaccuracies. The dl6wu yagi is highly regarded as being easy to build with repeatable results. Quad antenna is a type of directional wire radio antenna mainly used on the vhf and uhf bands. Ya antenna software is really good for designing yagi antennas i have used ya many times to do most of the yagi designs, and i have gotten extremely good performance with all the antennas i.
Folded dipole fully insulated from boom directorreflector diam 2. The function of the calculator is to give all of the needed sizing to construct a good 5 element quad antenna for amateur radio use. G0ksc simple to build, high performance yagi and quad. This calculator requires only the entry of the center of the frequency range your quad antenna will be used in. Boom material is wood 18 mm square western red cedar, very stable material. The plot below shows only the 20 meter elevation pattern. Horizontal or vertical polarization of an cubical quad antenna is determined by placement of the feed point feed gap on the driven element parasitic elements need to be mounted in the same orientation as the driven element. The gain is always less than a yagi with equivalent numbers but other factors still make it the better choice in my. Now its time to step it up just a little bit and fabricate a bigger antenna. A fiveelement quad antenna for 2 meters by jim reynante.
Quickyagi this is the place for downloading the latest dos version of quickyagi the freeware yagi. The formula and basics of yagi antenna calculator are also explained with example. Having had a gem quad hf 201510m for a few years, back in the early 80s, i can testify to the quad s slight advantages over a tribander yagi with the same number of elements. Long yagis are commonly used from the 144mhz amateur band to the 2.
If you decide you really need a yagi with more elements, here are the lengths of them. Uhf quad antenna calculator revisiting rectangular loop antenna. Our results are optimised for gain, but others may be optimised for bandwidth. Some are based on lookup tables, some completely hide their algorithms. Please post a comment if you know other great software or links with information about antenna calculator and design programs. Antenna calculator dipole antenna calculator, yagi antenna calculator, find the length of a dipole, 3 element yagi antenna calculator dipole antenna calculator, yagi antenna calculator antenna calculators folded dipoles, wire antennas, design your own dipoles, design your own ground plane, half wave vertical antenna design, quad design.
These antennas were made with this process, and tested on this backyard antenna range. Class 1970, married with two childrens, love experimenting and antenna homebrewing. This method of construction can be used on most uhf through low microwave yagis, and is especially useful for the 33, 23 and cm bands. Use these antenna design software to design and analyze antennas of. The standard quad is designed from the textbook equations and is compliments of roger clement kc5lca. The gain of an an antenna with parasitic elements varies with the spacing and tuning of the elements, and thus for any given spacing there is a. The yagi uda antenna is the most recognized antenna.
Msdos antenna maker it allows to quickly calculate dimensions for quads antennas, yagi antenna, inverted vees antennas as well as jpoles and traps to. And a yagi antenna calculator, a cubical quad antenna calculator, a dipole antenna calculator, a loop antenna calculator, a wire antenna calculator, and a guide to many ham radio wire antennas. Software, elnec antenna modeling and analysis by w7el. The quad always requires manual tuning and optimization. It is quite possible, that other calculators deliver slightly different results. A fiveelement quad antenna for 2 meters by jim reynante, kd6glfpo box 27856san diego, ca 92198 if your station is located on the fringe of the repeaters coverage area, youve come to the right place. Ladder line antennas, how amateur radio antennas work, eznec software and what it can do for you. Thanks ive built a few of these bi quad antennas now from the calculator on. Cubical quad antenna js calculator iw5edi ham radio.
This tool will help you dynamically to calculate the spacing between the reflector, driven element and directors. Education software downloads yagi designer by goforth laboratories and many more programs are available for instant and free download. The name quagi is a simple contraction of quad yagi. Quad calculator cubical quad antenna calculator in java script. Yagi design software software free download yagi design. A quad antenna is typically a single wire formed into a square. Yagicad is a fully integrated analysis and design package primarily intended for vhf yagi aerials.
Our vhf dual stacked yagi antenna, uhf dual stacked yagi antenna and microwave dual stacked yagi antenna design reflects innovative modern antenna construction. Antennas are enough of a pain in the ss to begin with, in my book i want something simple that works. I like to use the basic dl6wu wideband yagi designs whenever possible. Antennas are enough of a pain in the ss to begin with. The optimum front to back ratio does not match the maximum forward gain in any yagi or. Wc7i provides a calculator for a 3 element yagi design. Quad antenna design is one more free antenna design and analysis software for windows. Many model ti7140 handheld calculator and the above formulas. Yagio runs under windows 2000, xp, vista, win 7 and likely win 8. Cubical quad antenna calculator in java script let you calculate elements size and.
Mar 16, 2020 yagi calculator is a windows program that also runs well on linux, ubuntu 8. A two element quad with a gain of 810 dbi has a turning radius of only 10. Sep 05, 2016 licensed amateur radio operator in 1996 as iw5edi, active member of ari firenze and arrl. The antenna is basically a quad opened up on the bottom. Its very suitable to vhf antenna modelling and even if it is very old it is still very popular. The calculators for other antenna types such as parabolic,horn,dipole and patch are also mentioned. J pole calculator enter the operating frequency and calculate dimensions of your jpole antenna necwin pro antenna analysis software with the user in mind. Oct 28, 2019 downloads for the projects on the vk5dj website. It uses the graphs and principles developed by dl6wu and printed originally in the german radio magazine vhf communications march 1982. Vk5djs yagi calculator yagi design frequency journal. This design can then be optimised or scaled to suit particular requirements.
With yagicad it is possible to enter a base design from scratch or use one of a number of saved well known designs. Questions when the stacking of yagis is being considered, the questions which usually arise are. Download yagi designer software for windows for free. Quad antenna is a type of directional wire radio antenna mainly used on the vhf and. The prototype for 2 meters made its first contact of over 200 miles while lying upside down on a picnic table. Antenna calculator calculate your dipole, 3 element yagi etc find the length of a dipole. The antenna acts like a stacked pair on the vertical and a standard yagi on horizontal. Free radio frequency software, antenna design and calculators. The gain of an an antenna with parasitic elements varies with the spacing and tuning of the elements, and thus for any given spacing there is a tuning condition that will give maximum gain this spacing.
This calculator is designed to give the critical information of a particular beam antenna, in this case a seven element yagi, for the frequency chosen. Licensed amateur radio operator in 1996 as iw5edi, active member of ari firenze and arrl. Hf cubical quad antenna calculator for amateur radio. Free online engineering calculator javascript to quickly find the dimensions of a bi quad antenna.
Using version 3 of his quad design program is very straightforward. This calculator will get you in the ballpark, and as written will provide you with a very good cubical quad antenna. Yagi calculator is a windows program that also runs well on linux, ubuntu 8. The yagi is 2 elements at 50 ft and the center of the 2 element quad is at 50 ft. But as stated above, manual tuning and optimization will bring greater results. Enter the desired frequency then click on calculate and the optimum values for that combination will be displayed in feet, inches and fractions of. Jun 27, 2004 a two element quad with a gain of 810 dbi has a turning radius of only 10. Ive taken what i learned from the gmrs continue reading homebrew 5 element vhf yagi. It produces maximum gain but requires tweaking for the number of elements. Yagio is similar to lpcad, it uses keyboard commands instead of a mouse menu. If you have no particular preference within a given ham radio band, then simply enter its center frequency i. The list will grow with your help so lets start and share the knowledge. Kitchen design software ideally switched to any of the kitchen room plans in diverse layouts such as. Yagi calculator is a program to assist with the design of long yagi antennas.
This page covers 3 element yagi antenna calculator. Free online engineering calculator to find the dimensions of a yagi uda antenna for a given frequency range and length. Yagi long yagi jpole super jpole log periodic loop antenna mw box loop antenna cubic quad vertical 18, 14, 38, 12, 58, 34, 78, and full wave helical it also performs the following calculations. Lets see some antenna calculator and antenna design software that will help you design faster and better. Antenna, ve3sqb ham radio antenna design software programs.
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