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. If you decide you really need a yagi with more elements, here are the lengths of them. Length = 468/Frequency ( in MHZ) 468/147.360 = 3.176 Feet. Dipoles antennas are easy to build and can be very effective when placed half a wavelenth or more above ground. The Boom length is 72 inches (6 feet).The boom is 1 and 1/4 inch tubing. Electrical Tape AND the lengths of these directors will all be the same The yagi antenna is a directional antenna with multiple elements placed one after another. Transmitters provide oscillating electrical energy on to the antenna which radiates them as electromagnetic waves. Seven Element Yagi. The antenna calculator above uses this formula as a starting point to calculate wire lengths for the dipole. The antenna calculator above uses this formula as a starting point to calculate wire lengths for the dipole. REQUIREMENTS. Moleculo Administrator. Below is a JavaScript that I wrote in order for you to quickly calculate the dimensions for a seven element Yagi-Uda Antenna. The Yagi-Uda antenna has one driven element, one reflector one side and one or more directors on the other side. Yagi Calculator. If you want to build a yagi antenna with more elements, here are the 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. In a similar way, lay down the remaining 15 inches of double-sided tape. Based on Rothammel / DL6WU You may want to combine it with a folded Dipole. Simply enter the freqency in Megahertz and the script will do the rest. [MHz] Boomlength [m] Gain [dBd] (approx.) To optimize the antenna for a frequency RANGE, do the calculations twice, once for the low … 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. 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. The results are conveniently displayed in inches, centimeters, feet and meters. Below is a JavaScript that I wrote in order for you to quickly calculate the dimensions for a seven element Yagi-Uda Antenna. This calculator is for short boom simple multi element monoband yagi antennas , and will not give you a perfect 50 ohm match. The first design is actually to short to be called a real 6 elements monobander. The length of the DIRECTOR element is 15 Feet and 7 + 13 /16 inches. The distance between each element is 4 Feet and 6 + 1 /16 inches. 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. The DL6WU yagi is highly regarded as being easy to build with repeatable results, broad bandwidth and a useful pattern. Free Online Engineering Calculator to find the Dimensions of a yagi Uda Antenna for a given Frequency Range and Length. The elements are 1/2 inch aluminum tubing of 1/16-inch wall thickness. Freq. 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. Conclusion: a 6 elements yagi placed high is a BIG GUN! Two versions are given for this length calculation – one using the length in metres and the other for the length in inches. The full length of the driven element is 3 Feet plus 2 inches. Antenna is an electrical device used to convert electrical power in to radio waves and vice versa. You can attach 50 ohm coax to … 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. The length of the REFLECTOR element is 16 Feet and 7 + 10 /16 inches. Staff Member. Yagi Uda Antenna Calculator You may want to combine it with a folded Dipole. It is inversely proportional to the frequency which means the wave with higher frequency will have shorter wavelength. The length of the DRIVEN element is 16 Feet and 9 + 6 /16 inches. 1/4 inch wide by 30 inch long strips to make the inner core of the boom. 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 . Element dimension in inch unless otherwise specified. Design background. Spacing is on the antenna bar holding the elements, with equidistant spacing from each of the outside elements to the driven element. Fractions as 3/4 which is three fourths or 3/100 which is three one hundredredths. Joined: Apr 14, 2002 Messages: 8,864 Likes Received: 974. The length of the 2nd DIRECTOR element is. Long yagis are commonly used from the 144MHz amateur band to the 2.4GHz band. The antenna is designed to be fed with 50 or 75 Ohm Coax Cable of most any length with a Balun. The DL6WU yagi is highly regarded as being easy to build with repeatable results, broad bandwidth and a useful pattern. DL6WU Yagi calculator spreadsheet. The length of the DIRECTOR element is NaN Feet and NaN + NaN /16 inches. 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. 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. length (metres) = 150 A f length (inches) = 5905 A f length (feet) = 492 A f 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. I stumbled across this spreadsheet for calculating the spacing and lengths of elements for yagi antennas. 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. 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].. This calculator will help you to calculate the different wavelength of … Calculated Driven Side Element Length (Each). 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