This does not take into consideration the type or size of horizontal reflectors, of even if there is a need for them. Antenna efficiency calculator antenna efficiency calculator, parabola antenna antenna eirp calculator enter power, antenna type, frequency, coax type, coax lenght, press for eirp antenna gain vs height this calculator computes the gain and elevation angles for various antennas that are mounted over a perfect or lossy ground. The most common material for home building small ham radio loop antennas is common copper plumbing pipe. Jul 14, 2014 hence here is the double biquad antenna and biquad antenna calculators for handmade antenna based on average data. The antenna is designed to be fed with 50 or 75 ohm coax cable of most any length with a balun. A quarterwavelength antenna is easy and inexpensive to build and can be an effective antenna with a low angle of radiation that is, power is radiated out, not up. This calculator can be used to design a slim jim or a j pole antenna. Erp calculator comes preprogrammed with data files including published data for several popular brands and types of coax cable as well as several popular antenna system brands and models. Antenna calculator length of the dipole antenna calculation. Some believe the coax is a major part of the radiating system. The measurements below are for building a simple dipole antenna. Index of popular ham linkstools worldwidedx radio forum. All you need to do is enter the desired resonant center frequency in the form below, then click calculate. This formula to obtain the length of a halfwave dipole antenna will give a good ballpark value to start with.
Effective jan 2016 i will be changing web hosting providers and as such a complete redesign of my website using a content management systemcms to better design and host the site. Spacing is the distance from the boom to the gammamatch. With twice the gain of a standard jpole antenna, the 2 meter slim jim antenna is a jpole on steroids. Vertical antenna 40m band for limited space youtube. The following program will calculate the lengths needed to construct several popular wire antennas. The microvert is based on a design developed by jurgen schafer dl7pe. The list will grow with your help so lets start and share the knowledge. The loops of folded antenna have been replaced by v shaped elements without any changes and easier matching. 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. Design and adjustement is easy, as with the capacitor you can tune the resonance by some mhz with no effort. About microvert antenna for 80 meters the resource is currently listed in in a single category. It has two electric poles charged positive and negative.
Coinductive and pdlii are trademarks and this antenna is most certainly covered by patents. As built, the microvert is a short, baseloaded antenna that uses the coax shield as a counterpoise. Feeding the antenna can be done at the director or at the reflector. By kurt andress, ni6w by kurt andress, ni6w ytad by n6bv determine antenna gain based on the slope of terrain. Dipole antenna calculator software free download dipole. The microvert by jurgen schafer, dl7pe, based on foreign sources was. Free online engineering calculator to find the dimensions of a cantenna can antenna. This calculator is designed to give the horizontal length of a particular dipole including tees antenna, or one side of it, for the frequency chosen. A useful microwave antenna calculator the antenna calculator is a very simple and easy piece of software. For example, this diminutive antenna is only about 30cms long on 28mhz. If the direction is not specified, the direction of maximum gain is assumed and the type of reference antenna should be specified. Calculate the frequency length of antennas please enter one value only and calculate the result.
This link is listed in our web site directory since tuesday apr 20 2010, and till today microvert antenna for 80 meters has been followed for a total of 747 times. Antenna design calculators category is a curation of 83 web resources on, magnetic loop excel sheet, parallel square conductor transmission line calculator, analysis of antenna mast strength and bending stress. Oct 26, 2014 quite a few people who use wspr use the tiny microvert antenna whose design seems to have originated in germany. This was posted to the microvert yahoo group earlier. It is the most effective antenna when compared to other ground plane antennas. Of course, this antenna is probably not the right choice for the dxhunter, but a very cheap, small and easy to build antenna and ideal for travelling and portable operation. The formula for calculating the approximate length of a quarterwave vertical antenna is. My new home made microvert antenna is on the roof and ready to testing. Magnetic loops from the experts dj3tz g4fon n5izu py1ahd wd8puo. It uses the coax intentionally as a counterpoise with an rf choke the right distance down the coax. Antenna software rf calculator page, these are all dosexecutable programs, each selfcontained in one binary file. The distance between one point to another adjacent point in a wave is known as the wavelength. Transmitters provide oscillating electrical energy on to the antenna which radiates them as electromagnetic waves. Hf dipole antenna this antenna software will help you design a simple wire dipole.
Usb sound card, and an asus notebook running spartan software. By definition, erp is the abbreviation for effective radiated power that is directed in a given direction. Jan 03, 2019 ham radio antenna wifi antenna radio amateur dipole antenna outdoor antenna 3d cnc radios survival skills twice there are times when you may need more gain than the standard jpole antenna. While the microvert doesnt perform as well as a dipole antenna, it can get you on the air where large antennas are not suitable or allowed. The main category is homemade projects for 80 meter antennas that is about antenna projects for 80 meters band. This gave the antenna more gain than a simple quad. Dec 21, 2012 dl7pe microvert antenna at december 21, 2012. These calculators are a great way to experiment with antenna designs before you go out and start building. This calculator is designed to give the vertical length height of a particular antenna, for the frequency and wavelength chosen. Dl7ahw gives two small programs for the calculation of the antenna on its page. Antenna calculator calculate your dipole, 3 element yagi etc find the length of a dipole. Rf antenna design software and utilities educypedia.
This calculator provides quick estimation of antenna size. Yagi uda antenna calculator you may want to combine it with a folded dipole. Antennas are equipped with radio transmitters and receivers. Works either in standard and metric units, and let you choose on material, and loop. Jul 03, 2014 erp calculator is an ham radio software utility designed to perform a sidebyside comparison of two ham radio antenna systems. Quite a few people who use wspr use the tiny microvert antenna whose design seems to have originated in germany. Compared to waveguides, microstrip is generally has a lower power handling capacity, and higher losses due to the fact that it is not enclosed.
Antenna, ve3sqb ham radio antenna design software programs. Unfortunately, they are physically competing since the smaller the antenna compared to the wavelength, the smaller the radiation resistance. Learn cw online firefox morse addon fcc radio or device documentation satellite info if anyone has a suggestion for threads that can be added to this, please post below, and i will update the list from time to time. The results are conveniently displayed in inches, centimeters, feet and meters. Yagistress the ultimate mechanical design software for antenna designers. It is the power supplied to an antenna multiplied by the antenna gain in a given direction. It uses a matching system similar to jpole antenna. However i highly recommend to follow my instructions, which are based on computer antenna simulation software 4nec2, to maximize performance. The slim jim, designed by the late fred judd, g2bcx, can be a great portable roll up antenna, if made out of 300. Microvert antenna for 80 meters resource detail the. Our antenna signal prediction service will help you evaluate alternatives to expensive cable or satellite subscriptions. As an assistance for coil conversion dl7ahw gives the program spulenprg. The microvert antenna, designed by jurgen schafer, dl7pe, is a short, base loaded antenna that. A microstrip is a type of electrical transmission line used to transmit rf signals and are commonly fabricated using printed circuit board pcb technology.
This calculator enables you to test the design of an octagonal loop antenna and to answer what if questions until you arrive at a design that meets your needs without a lot of experience in electronics. So far i had seen the micro vert only from the distance and placed myself it. May 17, 2015 it looks like the microvert antenna may have originated in japan. Dec 31, 2018 the microvert is based on a design developed by jurgen schafer dl7pe.
Having never tried this sort of antenna i am unable to comment. While the microvert doesnt perform as well as a dipole antenna, it can get. The antenna calculator above uses this formula as a starting point to calculate wire lengths for the dipole. It is inversely proportional to the frequency which means the wave with higher frequency will have shorter wavelength. Antenna is an electrical device used to convert electrical power in to radio waves and vice versa.