This calculator is for short boom simple multi element monoband yagi antennas , and will not give you a perfect 50 ohm match. The distance between one point to another adjacent point in a wave is known as the wavelength. Long yagis are commonly used from the 144MHz amateur band to the 2.4GHz band. 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. This formula to obtain the length of a half-wave dipole antenna will give a good ballpark value to start with. 1/4 inch wide by 30 inch long strips to make the inner core of the boom. Reception is the reverse. 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. Short version Boomlenght 7,3 meters Types HPSD 6 Short. The impedance of this antenna is around 300 Ω, so you may want to use a transformer or a λ/4 long piece of 120 Ω coaxial cable to match this impedance to 50 Ω. Yagi Uda Antenna Calculator You may want to combine it with a folded Dipole. Enter the desired operating frequency in megahertz to get a good starting length for a dipole in both feet and meters. Yagi Calculator - Yagi Calculator is a free Windows program that also runs well on Linux, Ubuntu 8.10 under Wine, to produce dimensions for a DL6WU style long Yagi antenna. Dipole Antenna Length Calculator. Our dipole calculator is a simple tool that allows you to compute the length of a simple antenna - it'll also provide you with the value of the wavelength and the adjustment factor [k].. Design background. 1. Yagi Calculator This is where you input the center frequency in MEGAHERTZ. Antenna is an electrical device used to convert electrical power in to radio waves and vice versa. 6 element UHF Yagi antenna . Fractions as 3/4 which is three fourths or 3/100 which is three one hundredredths. The separation between each element is NaN Feet and NaN + NaN /16 inches. In the text below, we will cover the basic rules of antenna construction, how to calculate dipole antenna length, and explain how to put our wire antenna calculator to work. In a similar way, lay down the remaining 15 inches of double-sided tape. Antenna is an electrical device used to convert electrical power in to radio waves and vice versa. 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, … There is a formula to calculate the “Boom Correction”. Yagi Calculator - Yagi Calculator is a free Windows program that also runs well on Linux, Ubuntu 8.10 under Wine, to produce dimensions for a DL6WU style long Yagi antenna. Element dimension in inch unless otherwise specified. The DL6WU yagi is highly regarded as being easy to build with repeatable results, broad bandwidth and a useful pattern. Joined: Apr 14, 2002 Messages: 8,864 Likes Received: 974. Seven element yagi antenna . The yagi antenna is a directional antenna with multiple elements placed one after another. Two versions are given for this length calculation – one using the length in metres and the other for the length in inches. It is inversely proportional to the frequency which means the wave with higher frequency will have shorter wavelength. Below is a JavaScript that I wrote in order for you to quickly calculate the dimensions for a seven element Yagi-Uda Antenna. But you will be close. NOTE: The minimum height above the ground should be NaN Feet and NaN + NaN /16 inches. Moleculo Administrator. Simply enter the freqency in Megahertz and the script will do the rest. If you decide you really need a yagi with more elements, here are the lengths of them. Antennas are equipped with radio transmitters and receivers. Spacing is on the antenna bar holding the elements, with equidistant spacing from each of the outside elements to the driven element. For advanced design look at the picture on the page for Eznec Software to get an idea of the shape you should be looking for. In fact, there are many different formulas to calculate the correction so I am going to use the one that I see most on the internet. The Yagi-Uda antenna has one driven element, one reflector one side and one or more directors on the other side. Based on Rothammel / DL6WU You may want to combine it with a folded Dipole. Using … Dipoles antennas are easy to build and can be very effective when placed half a wavelenth or more above ground. As general information, the director is the shortest element, the driven elements are the middle elements (in a 7 element beam, each the same size) and the reflector is the longest element. 1 25 foot 1 inch wide steel tape measure 2. 1 10 foot piece of 3/4 inch Schedule 40 PVC Tube 3. Amateur radio / Antenna / Seven element yagi antenna. Direction of the strongest transmitted signal is from the reflector toward the director. Long yagis are commonly used from the 144MHz amateur band to the 2.4GHz band. The DL6WU yagi is highly regarded as being easy to build with repeatable results, broad bandwidth and a useful pattern. Long yagis are commonly used from the 144MHz amateur band to the 2.4GHz band. Below is a JavaScript that I wrote in order for you to quickly calculate the dimensions for a seven element Yagi-Uda Antenna. The impedance of this antenna is around 300 Ω, so you may want to use a transformer or a λ/4 long piece of 120 Ω coaxial cable to match this impedance to 50 Ω. Solder and Flux 9. I stumbled across this spreadsheet for calculating the spacing and lengths of elements for yagi antennas. Yagi Antenna Calculator. ... yagi_uda_antenna_DL6WU.php 14898 Bytes 24-07-2014 07:55:47 Yagi Uda Antenna Calculator . Then cut neatly with the X-Acto knife. 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. Length = 468/Frequency ( in MHZ) 468/147.360 = 3.176 Feet. Our dipole calculator is a simple tool that allows you to compute the length of a simple antenna - it'll also provide you with the value of the wavelength and the adjustment factor [k].. Yagi Calculator is a Windows program that also runs well on Linux, Ubuntu 8.10 under Wine, to produce dimensions for a DL6WU style long Yagi antenna. [MHz] Boomlength [m] Gain [dBd] (approx.) I also used the calculator to design several other This calculator requires the use of Javascript enabled and capable browsers. [MHz] Boomlength [m] Gain [dBd] (approx.) To optimize the antenna for a frequency RANGE, do the calculations twice, once for the low … Calculated Driven Side Element Length (Each). 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. Yagi Uda antenna showing element types Yagi antenna theory - the basics. AND the lengths of these directors will all be the same REQUIREMENTS. Enter inches in mixed numbers, whole numbers or fractions in the following formats: Mixed numbers as 1 1/2 which is one and one half or 25 3/32 which is twenty five and three thirty-secondths. Yagi Calculator is a Windows program that also runs well on Linux, Ubuntu 8.10 under Wine, to produce dimensions for a DL6WU style long Yagi antenna. All material used in this project are easily obtainable tubes and rods which is limited within a total budget of $18. Free Online Engineering Calculator to find the Dimensions of a yagi Uda Antenna for a given Frequency Range and Length. Simply enter the freqency in Megahertz and the script will do the rest. Yagi Calculator is a free antenna design and analysis software for Windows. Long yagis are commonly used from the 144MHz amateur band to the 2.4GHz band. All material used in this project are easily obtainable tubes and rods which is limited within a total budget of $18. The calculator creates equal spacing between the elements, which achieves a balance between good bandwidth performance and a decent 50-Ohm match. Amateur Beam Antenna Calculator. Convert the 0.176 Feet to inches. The full length of the driven element is 3 Feet plus 2 inches. 6 element UHF Yagi antenna . 0.176 times 12 = 2.1 inches. Dipole Antenna Calculator. Place a 1:1 Balun on the Antenna end of the Feedline. This calculator is designed to give the critical information of a particular beam antenna, in this case a three element Yagi, for the frequency chosen. Freq. Keep exactly one space between the whole number and the fraction. The elements are 1/2 inch aluminum tubing of 1/16-inch wall thickness. Note : The separation will remain the same for all the elements AND the lengths of these extra directors will all be the same as the 1st director . 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. 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. (you can cut up an old TV antenna they work great). The length of the 2nd DIRECTOR element is. Each side will be half that length, or 3.176 Feet/2 = 1.588 Feet. The larger the wire, the wider the bandwidth. Yagi Calculator is a science application that targets designers of Yagi antennas, being capable of performing calculations for a given model automatically, based on the parameters defined by the user. Transmitters provide oscillating electrical energy on to the antenna which radiates them as electromagnetic waves. The distance between each element is 4 Feet and 6 + 1 /16 inches. sizes and spacing for them. The Boom length is 72 inches (6 feet).The boom is 1 and 1/4 inch tubing. Conclusion: a 6 elements yagi placed high is a BIG GUN! Element dimension in inch unless otherwise specified. Spacing between elements are 34 and 1/2 inches. The length of the DIRECTOR element is NaN Feet and NaN + NaN /16 inches. I do realize that this is not an optimum design, but it did help me to put out a very good signal on 2 meters to work simplex and wide area repeaters. The antenna calculator above uses this formula as a starting point to calculate wire lengths for the dipole. Freq. In understanding the basic Yagi antenna theory, the different elements of the Yagi antenna react in a complex and interrelated way. 2 3/4 inch PVC Cross connectors 4. Yagi Calculator - Yagi Calculator is a free Windows program that also runs well on Linux, Ubuntu 8.10 under Wine, to produce dimensions for a DL6WU style long Yagi antenna. You can attach 50 ohm coax to … Discussion in 'Amateur Radio Antennas' started by Moleculo, Aug 31, 2009. 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. REQUIREMENTS. Design background. This page covers 3 element Yagi Antenna calculator.The formula and basics of Yagi Antenna Calculator are also explained with example.The calculators for other antenna types such as parabolic,horn,dipole and patch are also mentioned. length (metres) = 150 A f length (inches) = 5905 A f length (feet) = 492 A f Antenna Calculator. The first design is actually to short to be called a real 6 elements monobander. Yagi-Uda design dimensions can vary significantly with differences in element diameter, boom material, element-to-boom attachment method, and other factors that are ignored by this simple calculator. The results are conveniently displayed in inches, centimeters, feet and meters. DL6WU Yagi calculator spreadsheet. The results are conveniently displayed in inches, centimeters, feet and meters. This is a standard 6 elements design scaled for UHF application. 1 5 inch piece of 14 ga wire 7. I do realize that this is not an optimum design, but it did help me to put out a very good signal on 2 meters to work simplex and wide area repeaters. This calculator requires the use of Javascript enabled and capable browsers. This is a standard 6 elements design scaled for UHF application. 2 3/4 inch PVC T connector 5. The length of the REFLECTOR element is 16 Feet and 7 + 10 /16 inches. 12) From one end of a 1-1/4 inch by 30 inch strip, lay down a first piece of double-side tape near the top edge for the first 15 inches. Elements : Diameter of parasitic Elements [mm] Diameter of Boom [mm] Is the boom isolated from parasitics ? One of the major keys to understanding Yagi theory is a knowledge of the phases of the currents flowing in the different elements of the antenna. Figure 2B shows the radiation pattern for a 24 element 1296 MHz design. This formula to obtain the length of a half-wave dipole antenna will give a … The length of the DRIVEN element is 16 Feet and 9 + 6 /16 inches. You can think of the antenna as an optimized 5 elements. Transmitters provide oscillating electrical energy on to the antenna which radiates them as … The antenna calculator above uses this formula as a starting point to calculate wire lengths for the dipole. 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 needed. The measurements below are for building a simple Dipole Antenna. Antennas are equipped with radio transmitters and receivers. The Wire Size can range from 16 AWG to 12 AWG. Calculate element lengths needed for different wavelengths including a velocity factor, Also scale antenna design for use with different frequencies and materials. Yagi Calculator. C= (12.597B) – (114.5B^2) The C equals the correction, and B equals boom diameter in wavelengths. Yagi Uda Antenna Calculator You may want to combine it with a folded Dipole. For 4 element yagi's and higher the distance between directors 2 - 5 will remain the same tool for this is the Yagi Calculator written by VK5DJ.1 Figure 2A shows a printout I used for a 23 cm DL6WU Yagi built on a boom made from 1⁄2 inch outside diameter (OD) aluminum tubing with 0.058 inch thick walls. 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 … The antenna is designed to be fed with 50 or 75 Ohm Coax Cable of most any length with a Balun. 6 3/4 to 1 1/2 inch stainless Hose Clamps 6. If you decide you really need a yagi with more elements, here are the lengths of them. This calculator will help you to calculate the different wavelength of … If you want to build a yagi antenna with more elements, here are the as the 1st director. Long yagis are commonly used from the 144MHz amateur band to the 2.4GHz band. Elements : Diameter of parasitic Elements [mm] Diameter of Boom [mm] Is the boom isolated from parasitics ? Three Element Yagi. Electrical Tape This will get you in the ballpark, but you will have to move the elements around a bit to get the lowest SWR at the frequency of your choice. In the text below, we will cover the basic rules of antenna construction, how to calculate dipole antenna length, and explain how to put our wire antenna calculator to work. This simple design will get you close to 50 ohms, but if you want to get closer, move the driven element closer to the reflector, and the 1st director closer to the driven element. Antenna Calculator. 1 length of RG-58 cable, approx 6 foot 8. Seven Element Yagi. Staff Member. The length of the DIRECTOR element is 15 Feet and 7 + 13 /16 inches.