2 meter cubical quad antenna calculator software

Enter center frequency to be calculated for a quad. This 3 element 2 meter quad design has a major plus going for it. The cubical quad antenna calculator for citizens band cb radio and amateur radio communications to calculate the spacing between the reflector and driven elements and directors. The optimum gain of any antenna with parasitic elements varies with the spacing and tuning of the antenna s elements. I have been astounded at the performance with it at 35 fti can work anything i can hear on 10, 15, 12, 17 and 20m. This is a different way of using pvc pipe to build a 2 meter cubical quad antenna. Best quality 2 meter stationary or portable yagi antenna pa14483b. In a quagi the first two elements of the antenna are quads, the directors are all simple straight wire elements, as in the traditional udayagi design.

Design your vhf yagi antenna online, a javascript enhanced web page that. Qubical quad construction has some great tips to help you build your quad, and the calculator there to give you element lengths and boom spacing. Any length of a good quality rg58x will suffice as the primary feedline. However, adding quad elements produces diminishing returns. I can only give relative measurements however, using a home brew field strength meter on 2 meters and 70 cm, the antenna shows considerable forward gain antenna pointed at fs meter, strong deep nulls to the sides, and good nulls from the rear. Cubical quad antenna javascript calculator for cb and amateur radio communications javascript program by n6ach ron vanvarden thanks to scott mcclements. The hf quad antenna works very well at a low height. Most parts are available on the world wide web or at some larger hardware stores. Cubical quad antenna javascript calculator for cb and amateur radio communications. The following books should be required reading for anyone interested in large or small quads. Building and experimenting with antennas can be an interesting part of the radio hobby. This kind of antenna looks similar to a biquad but works like a quadantenna. This twoelement cubical quad antenna is designed for use on either the 10meter ham band or the 11meter citizens band. The 2 element quad has almost the same gain as a 3element yagi.

This listing is for a 8 element cubicle quad antenna for 2 meters. Horizontal or vertical polarization of an cubical quad antenna is determined by placement of the feed point feed gap on the driven element parasitic elements need to be mounted in the same orientation as the driven element. The main category is quad antennas resources that is about quad antenna, how to build a quad antenna for ham radio use. Antenna software 10 m delta loop antenna calculator antenna modeling software and other utility programs antenna design freeware antenna feed system modeling software antenna shareware a bunch antenna software antena solver antenna software antenna software loaded antenna software by w7el antenna software from qrz cubical quad antenna calculator. By the way, the 2 meter 3 element quad homebrew version is described here very nicely. If you want to experiment with the design program, see details below. For a 2 ele you need the 14 wave 75 ohm coax for impedance matching, which for rg59 would be 1. This listing is for a 4 element cubicle quad antenna for 2 meters. Recently, ive been getting requests for 2 meter quads with 2, 4, and 8 elements and even some interest in 6 meter quads. I like to combine the vhf and field day events with camping so my antennas need to be portable.

Oct 08, 2016 antenna design freeware 1d and 2d arrays from mei software. Instead of an x style spreader this antenna uses an h shape spreader. The most popular book on antennas ever written, widely known as the antenna builders bible, joseph j. Antenna, ve3sqb ham radio antenna design software programs. Ei7ba multiband cubical quad antenna, ve3sqb ham radio.

It should be remembered when considering its use that the quad, when fed at the bottom gives horizontal polarisation. I have been developing a dual polarity, 4 element, cubical quad for use on the 2 meter band. The antenna is basically a quad opened up on the bottom. Horizontal or vertical polarization of an cubical quadantenna is determined by placement of the feed point feed gap on the driven element parasitic elements need to be mounted in the same orientation as the driven element. Dipole antenna ham radio antenna the real world quad over the years software told you so wire building.

A cubical quad antenna is a four sided, square version of a folded dipole. A fiveelement quad antenna for 2 meters by jim reynante, kd6glfpo box 27856san diego, ca 92198 if your station is located on the fringe of the repeaters coverage area, youve come to the right place. Connect to station with any length of good 50 ohm coax and pl259 connectors and one barrel connector to couple the feed lines. The pattern of left is for a twoelement 20 meter quad 35 feet high 1 2 wave high. My next project will be either a 2 meter band version of this or a 3 element beam of this 70cm band quad antenna. Amateur radio, land mobile, scanner, low power fm, and airband antennas. Antenna videos 2m70cm vertical dipole antenna easy to make, super easy no trim tuning cubical quad antennas ham radio 2m backpack quad antenna coat hanger copper wire 2 meter yagi antenna 2 meter yagi antenna w gamma match dipole and inverted v antenna basics.

The name quagi is a simple contraction of quadyagi. If we are building a 2 element quad we would need to use a 2. This up and over, over and down design had been used in hf wire antennas. A 3element cubical quad has more gain than a 3element yagi. The cubical quad antenna lends itself to use at vhf and uhf, and a 2 metre quad or two meter quad is easy to make using a few items that are easy to obtain or may even be available anyway. Summer contests are a great reason to get away from it all and enjoy the pleasures of amateur radio. Meantime, below youll find a brief history of the cubical quad.

With twice the gain of a standard jpole antenna, the 2 meter slim jim antenna is a jpole on steroids. A quad antenna is typically a single wire formed into a square. My reference antenna was the 14 wave whip on my ht, with an added tiger tail counterpoise. The antenna acts like a stacked pair on the vertical and a standard yagi on horizontal. This antenna does not need a 75 ohm transformer as quads do at lower frequencies. The fact that the quad antenna is effectively a pair of stacked dipoles, it offers a lower.

Antenna design freeware 1d and 2d arrays from mei software. The plot below shows only the 20 meter elevation pattern. Cubical quad antenna js calculator iw5edi simone hamradio. Carrs practical antenna handbook, third edition is a work for anyone, ham radio operators, shortwave radio listeners anyone with an interest in antennas, from the newest of novices to the. The name quagi is a simple contraction of quad yagi. William orrs book11 shows a 101520 meter, 2 element cubical quad with boom length of 6.

Apr 18, 2020 this antenna does not need a 75 ohm transformer as quads do at lower frequencies. The gain of an an antenna with parasitic elements varies with the spacing and tuning of the. Please see my other listings for different sized quads. Quoting from william orr, whereas parasitic beams having twenty or thirty parasitic directors are efficient, high gain antennas, it would. Why is it time for you to purchase a quasar quad antenna from radiowavz. And a yagi antenna calculator, a cubical quad antenna calculator, a dipole antenna calculator, a loop antenna calculator, a wire antenna calculator, and a guide to many ham radio wire antennas. Cubical quad antenna calculator ham radio antennas. Ladder line antennas, how amateur radio antennas work, eznec software and what it can do for you. The pattern of left is for a twoelement 20meter quad 35 feet high 12 wave high. This calculator requires only the entry of the center of the frequency range your quad antenna will be used in. A fiveelement quad antenna for 2 meters by jim reynante.

The 2element quad has almost the same gain as a 3element yagi. In the next few pages, ill provide pictures and information about our products. The optimum gain of any antenna with parasitic elements varies with the spacing and tuning of the antennas elements. The gain of an an antenna with parasitic elements varies with the spacing and tuning of the elements, and thus for any given spacing there is a tuning condition that will give maximum gain this spacing. Table 1 shows an example output from the excel scaling program. The webmaster does not read the comments regularly. Order practical antenna handbook with cd rom by joseph j. The characteristic impedance of a loop depends on its shape.

This calculator requires only the entry of the center of the frequency range your cubical quad antenna will be used at. The prototype for 2 meters made its first contact of over 200 miles while lying upside down on a picnic table. The resource is currently listed in in 2 categories. A 2 element cubical quad for the 1011 meter band by n1uue. Cubical quad antenna calculator in java script let you calculate elements size and. The yagi is 2 elements at 50 ft and the center of the 2 element quad is at 50 ft. Here we have collected some links to building instructions for 11m antennas on the internet.

Band cubical quad horizontal polarization using mmanagal free software duration. The quad antenna, sometimes called the cubical quad, is an antenna which is used by many. The strongest signal produced from northern australia is from 43tr299 the 3 element above is the reason why. D is the distance from the dipole to the reflector. Nov 28, 2015 the plot below shows only the 20 meter elevation pattern. Figures 2 and 3 show the calculated antenna patterns and performance. This twoelement cubical quad antenna is designed for use on either the 10 meter ham band or the 11 meter citizens band.

Both quiet and efficient, the quasar quad experience has lower noise than a traditional yagi antenna due to its fundamental tube design. The cubical quad beam antenna offers about 2 db over a yagi of a similar length. Many model ti7140 handheld calculator and the above formulas. It is light and has a small boom, 9 ft and small turning radius that fits most city lots. Below you can find the dimensions for a 3el cubical quad. Frequency for three different 2 meter antennas, a 4 element quad, a 6 and a 12 element yagi. The design is really quite simple and easy to make but it may take a little practice to get just the right square shape for the wire element. A backpack antenna that is easy to put together in just minutes and parts store inside the boom making it ready for travel or storage. Since our antenna the 4 element quad has a feedpoint impedance around 50 ohms and our coax is 50 ohms, that means we want a 1. This link is listed in our web site directory since thursday jul 30 2009, and till today 144mhz cubical quad has been followed for a total of 5394 times. Excellent choice 144 mhz to 146 mhz low noise wideband yagi antenna for 2 meter band. The purpose of the calculator is to give you the needed sizing to construct a good multielement cubical quad antenna for amateur radio use. Click on calculate to display the critical antenna measurements in both inches and centimeters.