The coax jumpers made the other 2 unactive elements. This calculator is designed to give the vertical length height of a quarter wave ground plane antenna, and the length of each of the four radials. Quarter wave antenna design calculator jeroen steeman. The main category is antenna design calculators that is about antenna design calculators. 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. Having had a gem quad hf 201510m for a few years, back in the early 80s, i can testify to the quads slight advantages over a tribander yagi with the same number of elements. Please post a comment if you know other great software or links with information about antenna calculator and design programs.
The comet gp15 is a pretty cool antenna that really delivers. Design and adjustement is easy, as with the capacitor you can tune the resonance by some mhz with no effort. The te11 cutoff frequency should be lower than 2412 mhz and the tm01 cutoff should be higher than 2462 mhz. Vhf and uhf antenna systems 1821 fig23these drawings illustrate the dimensions for the 144mhz groundplane antenna. As we are dealing with an integer number of elements.
The list will grow with your help so lets start and share the knowledge. Categories antennas tags 4nec2, autotransformer, dipole, efhw, endfed, eznec, nec, simulation, transformer. The antenna is designed to be fed with 50 or 75 ohm coax cable of most any length with a balun. All the elements of this antenna are the same length as stated, 14 wavelength. Calculate the frequency length of antennas please enter one value only and calculate the result. View antenna display, showing the wires making up the model of the fiveelement beam, with currents and 2d slice superimposed to show orientation. J pole antenna calculator free online math calculator and. This calctown calculator calculates the efficiency of a parabolic antenna given its aperture, gain and wavelength of radio waves. A groundplane antenna is a variant of the dipole antenna, designed for use with an unbalanced feed line such as coaxial cable. Amateur quarter wave ground plane antenna calculator. If the centre tap of the t is moved offcentre by approximately 10 percent of overall top length the antenna becomes a windom when top length is.
The distance between one point to another adjacent point in a wave is known as the wavelength. The radiation pattern of a tantenna is that of a simple vertical of the same height, i. Gain of the parabolic antenna g antenna gain calculator. This calculator provides quick estimation of antenna size required for a given gain and frequency. Maamodel of the zigzag antenna can be downloaded from our website. Free online engineering calculator to find the dimensions lambda4. It is inversely proportional to the frequency which means the wave with higher frequency will have shorter wavelength. The normal quarter wave ground plane antenna consists of a vertical radiator which is insulated and centered between 4 horizontal surrounding.
Enter the desired frequency and select the wavelength. The copper colored line is the inverted vee configuration. It was written for dos many years ago and ported to windows. Antenna, ve3sqb ham radio antenna design software programs. Apr 25, 2018 the updated calculator of kharchenko antenna. Whats the difference between a dipole and a ground plane. 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. E vm electric field strength in volts per meter vm at a distance d 1 meter from an antenna with unity gain g1. This antenna beams into three quadrants without the use of a rotator. Long yagis are commonly used from the 144mhz amateur band to the 2. This software can not only be used to design but also to find out antenna gain, stacking distance, and standing wave ratio swr.
Calculate safety distance from your antenna icnirp is a calculator software that. Program good for 1 500 mhz, although intended for mf hf useage. Antenna downtilt angle calculator uses height in feet and distance in miles. About quarter wave gp antenna calculator the resource is currently listed in in a single category. Download hf dipole calculator 12 wave wire dipole antenna. Jul 03, 2014 erp calculator is an ham radio software utility designed to perform a sidebyside comparison of two ham radio antenna systems. Amateur vertical antenna calculator updated pop this basic calculator is. The gp 15 covers 6 meters, 2 meters, and the 440 band. Quarter wave gp antenna calculator resource detail the. The effective isotropic radiated power eirp is the apparent power transmitted towards the receiver, if it is assumed that the signal is radiated equally in all directions, such as as a spherical wave emanating from a point source. Yagi calculator is a windows program that also runs well on linux, ubuntu 8.
The dl6wu yagi is highly regarded as being easy to build with repeatable results, broad bandwidth and a useful pattern. Antenna design freeware 1d and 2d arrays from mei software. The horizontal radiation pattern is a circle where the antenna radiates equally well in all directions. This calculator will help you to calculate the different wavelength of antennas based on the frequency. It uses a very simple design of copper and brass wire sections connected together with a few capacitor traps and couplers, running up through the double reinforced tubular fiberglass shell. This calculator is designed to give the vertical length height of a quarter wave ground plane antenna, and the length of each of the four radials often called radiators for the frequency chosen. P r reflected power %, expressed as a percentage of the incident power for a specific vswr.
Amateur vertical antenna calculator this basic calculator is designed to give the aproximate length height of a particular vertical antenna, for the frequency and wavelength chosen. If the centre tap of the t is moved offcentre by approximately 10 percent of overall top length the antenna becomes a windom when top length is 12wavelength. It resembles a coaxial antenna whose lower section consists of straight elements called radials instead of a hollow conducting cylinder. Jul 16, 20 the ground plane antenna is omnidirectional. This formula to obtain the length of a halfwave dipole antenna will give a good ballpark value to start with. The blue line in the drawing is the example of a horizontal dipole. Feed line usually 50 ohms is connected at feedpoints, center conductor to one side, the shield to the other side of antenna. This formula to obtain the length of a halfwave dipole antenna will give a. The gp15 covers 6 meters, 2 meters, and the 440 band. J pole antenna calculator free online math calculator. Dualband base repeater antenna find all of your rope, pulleys, carabiners, and guying needs here. This link is listed in our web site directory since sunday oct 28 2007, and till today quarter wave gp antenna calculator has been followed for a total of 4674 times. Works either in standard and metric units, and let you choose on material, and loop shape, as circular, square. Antenna calculator for hf antennas ham radio secrets.
Online physics calculator that calculates the long, short section, feed point, spacing dimensions values for current frequency. With yagicad it is possible to enter a base design from scratch or use one of a number of saved well known designs. Make sure this fits by entering your model numbercenter frequency. 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. Groundplane antennas for 144, 222 and 440mhz for the fm operator living in the primary coverage area of a repeate r, the ease of construction and low cost of a 14. Wilson electronics wideband directional antenna 7002700. Yagi uda antenna calculator you may want to combine it with a folded dipole. This calculator is designed to give the vertical length height of a particular antenna, for the frequency and wavelength chosen. You can further reduce the height of the antenna by placing a capacitance hat at the top. Antenna downtilt angle calculator,antenna tilt angle. This is a very simple program to use and has a handy print function and nice graphics showing the basic layout of each antenna. Log periodic antenna design calculates the dimensions and spacings of the elements needed to build a log periodic antenna, given tao. Enter the frequency in mhz and hit calculate to get the resulting lengths of the complete dipole and.
Antenna design calculators calculate antenna element measurements for. Online calculator lpda logarithmic periodic dipole antenna. The antenna calculator is a very simple and easy piece of software. Eirp, or effective isotropically radiated power, or equivalent isotropically radiated power, is a measurement of output power in one direction from an ideal, one dimensional source. Its a light magnetic loop antenna calculator that run on ms windows, and allow to calculate capacitor values and voltage based on loop circumference, conductor diameter, desired resonant frequency and the operating power. The radiation pattern of a t antenna is that of a simple vertical of the same height, i. Calculator notes f o antenna tuned frequency in mhz. If you would rather calculate the length of a fullsize vertical antenna, see the quarterwave vertical antenna calculator.
The fm antenna calculator is an online application designed to assist in fm antenna systems planning. The antenna calculator above uses this formula as a starting point to calculate wire lengths for the dipole. This does not take into consideration the type or size of horizontal reflectors, of even if there is a need for them. Lets see some antenna calculator and antenna design software that will help you design faster and better. For other values of d, divide the calculated e vm by 10 for d 10 m. 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. Erp calculator is an ham radio software utility designed to perform a sidebyside comparison of two ham radio antenna systems. Applies to antenna farfield calculations using e vm. Feeding the antenna can be done at the director or at the reflector.
Pasternacks eirp calculator determines the radiated power given the transmitter power, the cable loss to the antenna, and the gain of the antenna. It also mentions formula or equations used in these antenna tilt angle calculators. A very basic program for calculating the length of each leg of a 12 wave wire dipole antenna. Hf dipole antenna this antenna software will help you design a simple wire dipole antennas for 1 30 mhz. This calculator was adapted from the coilshortened dipole antenna calculator. Free online engineering calculator to find the dimensions of a yagi uda antenna for a given frequency range and length. A nec model that includes the transformer helix helps demystify the endfed halfwave efhw dipole antenna using the autotransformer as impedance converter. Antenna calculator calculate your dipole, 3 element yagi etc find the length of a dipole. The vertical element and radials are 332 or 116inch brass welding rod. Zigzag antenna of kharchenko calculator ham radio site. The inverted vee is is just a lazy dipole that cant hold its arms up and is about 4 to 5%. The formula for calculating the approximate length of a quarterwave vertical antenna is.
This antenna has no gain and requires a ground plane reflection to operate. Wilson electronics wideband directional antenna 7002700 mhz, 50 ohm 314411 4. The other antenna was made by antenna specialist who are still in business and may still produce the super scanner. Yagicad is a fully integrated analysis and design package primarily intended for vhf yagi aerials. The antenna is modeled in mmana program and optimized for wifi and 3g bands. As it was and is the only yagiuda antenna modelling software that includes producing the. This calculator can be used to design a quarter wave ground plane antenna, with radials. This page can be used to calculate the element and radial lengths for a 14 wave ground plane antenna. Yagi calculator is a free antenna design and analysis software for windows. Antenna calculator and design software electroschematics. Download software 14 wave antenna with ground plane windows.
The wire in these bands is selected with a diameter of 2. Works either in standard and metric units, and let you choose on material, and loopread more. This app does nothing more than the standard 468freq mhz type calculations. Oct 25, 2017 the comet gp 15 is a pretty cool antenna that really delivers. Using this software, you can design and build your own yagi antenna. This design can then be optimised or scaled to suit particular requirements. Antenna efficiency calculator online antenna efficiency.
The results are conveniently displayed in inches, centimeters, feet and meters. Antenna design calculators category is a curation of 83 web resources on, parallel square conductor transmission line calculator, analysis of antenna mast strength and bending stress, full wave loop antenna calculator. Spacing is the distance from the boom to the gammamatch. The measurements below are for building a simple dipole antenna. By using relays, a single feed line could be switched to 1 of 3 elements or to all for an omni position.
1386 168 1463 23 1167 1130 761 367 1346 701 615 783 453 1286 655 1389 79 482 1647 98 482 1243 61 1263 690 274 629 1339 1299 1202 152 221 433 230