40m dipole calculator software

I had some 50mm outside diameter plastic pipe and 2mm polyweave wire, from this i had to work out the number of. This calculator is designed to give the vertical length height of a particular antenna, for the frequency and wavelength chosen. Hf linked dipole antenna calculator resource detail. I used that site, and have made a 12sized 40m dipole antenna with it, with much success. Each wire has one end connected to antenna and the other end is left free. A dualband dipole with the best traps of the world has about 0,3 db total loss due to traps, this on both bands so either in passthrough or blocking mode, loss seems quite the same same dipole antenna with coax traps would have about 0,6 db total loss the double, but a negligible difference on the smeter of your dx correspondent. Hf linked dipole antenna calculator resource detail the.

About hf linked dipole antenna calculator the resource is currently listed in in 2 categories. Dec 04, 2016 if it is a straight dipole, fed with coaxial line, what frequency is it cut for. Hf linked dipole may 5, 2016 february 8, 2019 this is a really versatile aerial for portable operating and is also quite simple to make its a 40m invertedv dipole but with the wires cut at certain points with crocodileclips soldered onto each piece of wire end. This could be 50 ohm types such as rg58, rg8x, rg8, rg2, or 75 ohm type such as rg11, rg59, rg6 or even 75 ohm twin lead. The antenna was constructed on the ground as per the dimensions shown. Using this software, you can design and build your own yagi antenna. Before we start to assemble our traps, here some general info as introduction. The complete set of equations is expressed in the mathematical relationship below as eq.

As we are dealing with an integer number of elements. What balun do i need for a 40m to 10m dipole for hf amateur. You could use the calculator to build a 75 or 80 meter dipole and then calculate an inverted vee for other bands higher in frequency, suspended under it as shown in the drawing above, from the same support and feed both with the same line to xmtr. Use 75 or 50 ohm cable to feed the centre of the dipole.

A very basic program for calculating the length of each leg of a 12 wave wire dipole antenna. For an inverted v with a 900 included angle legs that slope downward at 45 0, youll need a minimum apex height of about 55 feet and a baseline length of 88 feet. This link is listed in our web site directory since thursday jun 23 2016, and till today hf linked dipole antenna calculator has been followed for a total of 1468. My garden is about 15m wide actually its 51 feet wide, so a whisker over however its too small to fit in fullsized flattop dipole. Easy to repair and maintain including in the field.

This is a 104foot long antenna, with very poor q traps, and loss is less than. Also, please remember that the 40m legs will be near but not quite at resonance on 15m. Dipole antenna projects for the 40 meter band category is a curation of 43 web resources on, w5vms shorty 40 antenna, the 40 meter inverted v antenna, simple 2040 m dipole antenna. Here is a simple antenna calculator for two popular forms of ham radio hf wire antennas. It gave me 40, 20 and 15 with a push because although a 40 meter dipole should give you a resonant 15 meter antenna, in this case with the coils for 40 it mucked the maths up and caused the atu some trouble. Spacing is the distance from the boom to the gammamatch. Kitchener waterloo amateur radio clubs web site features extensive ham radio content. The antenna cable was then threaded through the cleat and secured with a nylon tierap as shown in the image above. It is intended as a simple, inexpensive solution for the newcomer to experiment across the 40m.

This is usually called a fan dipole and works well when tuned for lowest swr. Note, however, the additional reflecting wire significantly improves the performance of the reflectorless. The following program will calculate the lengths needed to construct several popular wire antennas. All you have to do is run the program and input your design frequency in the white window top left.

The correct lengths for the various models will be displayed in the chart. If it is a straight dipole, fed with coaxial line, what frequency is it cut for. The free end of each wires are pointed towards opposite direction of the other free end. Modeling the 40m w6nl moxon 2 april, 2012 introduction the antenna which is the topic of this note is described in a document titled. If you have the facilities to hoist a 40m dipole in an inverted v or higher configuration by all means do so. Dipole antenna calculator software free download dipole. To calculate the length of a fullsize dipole, use the dipole antenna length calculator. The first online dipole and inverted v calculator on the page below has been. Online calculator folded dipole calculator changpuak. Heres a really simple way of double checking how to much to trim your antenna elements.

I came across the website of derek hilleard, g4cqm, containing a wonderful assortment of details to help make your next yagiuda project antenna a success. The socalled ocf windom is also a misnomer, for the same reasons. Regular dipole, with the angle of 180, has feed point impedance of 72 it can be made with a wire or with rods or pipes. Feeding the antenna can be done at the director or at the reflector. Dipole antenna calculator software antenna design calculator v. It was written for dos many years ago and ported to win32. A halfwave dipole is usually fed at its center because this is where maximum current occurs.

It is intended as a simple, inexpensive solution for the newcomer to experiment across the 40m band 7. When the legs of a horizontal dipole antenna are slooped, the resonant frequency of the antenna is increased, therefore to bring the antenna back to. Hey, im trying to make a 80 mtr dipole, not one for 160 m 1. The antenna that i put up first was a vertical dipole for 10, 15, 20 and 40 meters. Wire antenna calculator amateur radio station ws6x. Hf dipole antenna design software electronic circuits. The 40 meter dipole was loaded with some coils so that i could fit it in the attic. Enter the desired operating frequency in megahertz to get a good starting length for a dipole in both feet and meters. Wire antenna calculator amateur radio ham radio station ws6x. Ive since been able to buy a stash of 15mm wide clear acrylic pieces in 50mm, 100mm, 150mm and 200mm lengths which make.

Download hf dipole calculator 12 wave wire dipole antenna. This software can not only be used to design but also to find out antenna gain, stacking distance, and standing wave ratio swr to design the antenna, you need to go to task design yagi menu. My garden is about 15m wide actually its 51 feet wide, so a whisker over however its too small to fit in fullsized flattop dipole but an inverted v works well. What balun do i need for a 40m to 10m dipole for hf. Enter the desired frequency and select the wavelength. Vertical dipole since i had purchased the kenwood ts590 transceiver a few months before i got my license, i needed an antenna or antennas right away for listening on the ham bands. Design and adjustement is easy, as with the capacitor you can tune the resonance by some mhz with no effort. Total wavelength refers to a single wire dipole in freespace and is theoretical. It filtered noise better in the city than my traditional 40m dipole.

This page features a calculator for a simple dipole. The previous calculator used here and most other calculators found show the inverted v antenna legs as being shorter by 2 5% based on the angle when really they should be longer by 2 6%. On the other hand, an ocf dipole is an ungrounded dipole antenna fed with twinconductor line, either coaxial or open wire parallel conductors. Make a 40 metre loaded dipole amateur radio tips and how. Any dipole consists of two radiating elements, insulated ad the feed point.

If you have no particular preference within a given ham radio band, then simply enter its center frequency i. This link is listed in our web site directory since thursday jun 23 2016, and till today hf linked dipole antenna calculator has been followed for a total of 1468 times. Dipoles antennas are easy to build and can be very effective when placed half a wavelenth or more above ground. The spreaders can be made from any nonconductive material such as pvc conduit pipe or you can use ladderline and make the whole lot from 1 piece of cable. This online calculator can be used to find the length of the dipole antenna. This app is intended for aiding in the design of simple wire dipole antennas for 1 30 mhz. Distance from center of antenna to the center of the coil in feet must be less than half the total antenna length given above. The measurements below are for building a simple dipole antenna. Magnetic loop calculator horizontal loop sky wire project horizontal loop sky wire calculator cubical quad calculator n6ach g7fek limited space antenna whip calculator attic coaxialcable trap dipole for 10, 15, 20, 30, 40, and 80 m twin lead 40m dipole this old dipole 40m dipole carolina windom new carolina windom the windom handbook six. Total length of antenna in feet open the dipole length calculator in a separate page. Coaxial dipole driver for yagiuda antennas antenna geeks rejoice you have another great antenna web site to visit during your next armchair browsing session. Enter the desired frequency and select the desired calculation from the drop box. 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. Even zip cord such as what is used for lamp cords will perform quite well.

Quick swr calculator for vertical and dipole ham radio antennas. Yagi calculator is a free antenna design and analysis software for windows. Mar, 2019 yet another 40m cloud burner design featuring a folded dipole driven element plus one reflector wire to facilitate 40m nvis contacts without need of a tall mast. Meserve website gave me the basic coil design parameters.

Offcenter loaded dipole antennas qst magazine, september, 1974. The wirelength on this 40m version is actually about 12m per leg. Band changing is accomplished by simply connecting different sections of the dipole together. This app does nothing more than the standard 468freq mhz type calculations. It is a simple linear loaded dipole feeded with 450ohm openwire feedline. You only need to type in the numbers in the cyan boxes. Apr 16, 2019 coaxial dipole driver for yagiuda antennas antenna geeks rejoice you have another great antenna web site to visit during your next armchair browsing session. Online calculator lpda logarithmic periodic dipole antenna. A cord grip was constructed by drilling two holes in the pipe and inserting a 4mm cleat into each hole purchased from ebay. The reason loss is low is we have moved the trap slightly outof. The design uses electric fence posts for support and needs no balun. Although not ham radio related, this site link needs to be added due to my love of animals.

Make a 40 metre loaded dipole amateur radio tips and howto. Dipole, inverted v and ground plane antenna calculators. I have, in good faith, given my best efforts to provide a calculator that will save ham operators time in setting up their antennas. On top of that, i added loading spikes at the tip of each dipole leg.

Dipole antenna calculator, free dipole antenna calculator software downloads, page 3. Shortened loaded 40 meter dipole for attics dx commander. In this menu, you need to submit values of multiple. Learn how to make a 40 metre loaded dipole to reduce the size of your hf antenna. Coax traps are cheap, easy to assemble in a reproducible manner, very rugged, perfect for portable or permanent operation, on dipoles, invertedvs etc. This calculator is designed to give the horizontal length of a particular dipole including tees antenna. All you need to do is enter the desired resonant center frequency in the form below, then click calculate. Get the apex as high as you can and keep the ends at least 10 feet above the ground for safety. Let me first say i make no claims of originality for this item. This does not take into consideration the type or size of horizontal reflectors, of even if there is a need for them. One of my aerials has just come down in the wind, a 40m compact dipole arranged as an inverted v with the ends coming down as far as the 6 feet fence height. The main category is dipole antenna that is about dipole antennas plans. Build a space efficient dipole antenna for 40, 80 and 160. Dipole antenna length calculator dipoles antennas are easy to build and can be very effective when placed half a wavelenth or more above ground.

The k5hh antenna calculators are for demonstration purposes only and may not reflect actual numbers for your equipment. Jan 19, 2015 the dipole was modeled at various heights from. Calculate safety distance from your antenna icnirp is a calculator software that allows you to determ safety distances for many know amateur radio antennas. The antenna is designed to be fed with 50 or 75 ohm coax cable of most any length with a balun.

This calculator provides quick estimation of antenna size required for a given gain and frequency. This calculator uses a k multiplying factor value of. Antenna calculator length of the dipole antenna calculation. When i put my fanned dipole up in north carolina i was resonant in band on 40 and 20 but i found that on 80 my antenna was simply too short. It is made with very high quality materials and the. A linked dipole is a great portable antenna that gives you a fullsized efficient dipole on each band.