The author had real experience designing quads for decades first in long island ny, then in fl. All about cubical quad antennas by william i orr, stuart d. Like a yagiuda antenna yagi, a quad consists of a driven element and one or more parasitic elements. 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 basic concept of the cubical quad beam antenna enables additional reflector and director elements to make it a more directive beam antenna with gain. Buy all about cubical quad antennas by william i orr, stuart d cowan photographer online at alibris. John koszeghy, k3bb exk2ob has had a love affair with quad beams for 45 years. All about cubical quad antennas paperback january 1, 1991 by william i. Lowell, n1lo, 41698 ok, this is the plan you have been waiting for.
All about cubical quad antennas the famous handbook on quad theory, design, construction and operation. Other useful information would include your experience with similar products, infomation on a product that you would purchase instead of this one, and so on. High performance cubical quad antennas 3rd edition by john. William orrs book 11 shows a 101520 meter, 2element cubical quad with boom length of 6. They confirmed that the types of people who buy the book meet the profile above. Listed under the antennas quad category that is about quad antennas resources. The arrl antenna book recommended reading describes most of the antennas used by radio amateurs, and their theory of operation. The first edition appeared in 1994, with a second in 1996.
Since its first introduction in the 1940s, the quad. Cebik, w4rnl, has published over a dozen books, with works on antennas for both the beginner and the advanced student. Building a 4 element cubical quad iw5edi simone hamradio. The vhf dipole antenna at vhf and uhf, most antenna systems are derived from the dipole or its complement, the slot antenna. 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. In a quad, each bent dipole is 14 wave long, and they are 14 wave apart. It is used by radio amateurs on the hf and vhf amateur bands. If you are limited in space a 2 elements quad could be what you were looking for. Read the section on yagi antennas if you are not familiar with directional beam antennas and how they work. The highest note should be marked with a one, while the lowest note should be marked with a four. The story of the cubical quad antenna 5 early history of the quad. The free space figures in eznec 4 give a gain of 9. In 1947, cubical quads began gaining popularity with amateur radio operators. Oct 10, 2015 cubic quads kq6rh c 1998, 1999, 2000 ray jurgens updated 2252000a a cubic quads a the cubic quad is a very popular way to get reasonably high gain and excellent front to back ratios as well as low angles of radiation for without going to extreme heights.
The resource is currently listed in in a single category. Cubical quad antenna calculator free online math calculator. Mark each note on the quad music with a number from one to four. But if you want only a single antenna as a monobander or a multibander, the cubical quad is very tough to beat. Buy a cheap copy of all about cubical quad antennas book by william i. These are theoretical figures and dont necessarily equate to reality.
Quad element dimensions and suggested colour coding. Open library is an open, editable library catalog, building towards a web page for every book ever published. That makes about 700 khz band width and thats less than on my first quad project where i had 1. However, adding quad elements produces diminishing returns. I have been hooked on quads since using them on hf field days many years. Directional cubical quad and delta loop antennas, single band cubical quad, fieldstrength meter, the quagi, gain vs front to back radio, feed lines, antenna safety, erecting antennas on masts, tower safety, quarter wave matching sections of 70ohm coax chart, and much more. The cubical quad antenna likely got its name from the appearance of early 2element versions of the array.
The success of the three previous editions of practical antenna handbook has been most gratifying. A cubical quad antenna is a four sided, square version of a folded dipole. This link is listed in our web site directory since wednesday oct 11 2006, and till today hombrewing cubical quads has been followed for a total of 4998. The cubical quad or quad antenna has traditionally not been as widely used as its more popular cousin the yagi. The latest arrl antenna book quotes the updated formula of 1032f, and eznec predicts 73. All about cubical quad antennas, the famous handbook on. A quad antenna is a type of directional wire radio antenna used on the hf and vhf bands. Cebik, w4rnl volume 3 of cubical quad notes extends the work begun in the first two volumes. Readers will find much besides including long yagi antennas, box kite yagis, vertical antennas, c pole antennas, twinc antennas, big loops, ground plane antennas and much more free bonus cd included in the book is a cd with eznec models for all the antennas in the book plus a bonus presentation on box kite yagi antennas. Full text of all about cubical quad antennas internet archive. Cheers, steve k7lxc announcing the release of a new book by lb cebik, w4rnl cubical quad notes volume 3. We deliver the joy of reading in 100% recyclable packaging with free standard shipping. Among his books are a basic tutorial in the use of nec antenna modeling software and compilations of his many shorter pieces. Product title emraw green marble composition book quad ruled paper.
However, in this book, the older and more common terms, cycles, kilocycles and. Learn this aspect of electronics online because a good understanding of what happens after a signal leaves a transmitter and before it enters the recever itself is essential for. Monster quads,mini quads, quad vs yagi,new designs. The feed point is usually placed at the centre of the dipole, for although this is not absolutely necessary, it can help prevent. Quoting from william orr, whereas parasitic beams having twenty or thirty parasitic directors are efficient, high gain antennas, it would.
Cebik, w4rnl, all about cubical quad antennas paperback trade in all about cubical quad antennas for an amazon gift card of up to 0. This 3rd volume in the series explores a number of questions involved in the design of multiband quad beams. Orrs most popular book is all about cubical quad antennas. Be careful of those recommended lengths folk seem to be using the 1005f cutting formula. Many antennas are based on halfwave dipoles fabricated from wire or tubing. 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. A 3element cubical quad has more gain than a 3element yagi. The quad creates gain by acting like two halfsize endloaded dipoles stacked one above the other with 14 wavelength spacing. The famous handbook on quad theory, design, construction and operation 1976, radio publications paperback in english second edition. Feeding your antenna weve learned that most antennas can be used with feed lines of any convenient length. A quad has a smaller turning radius that a yagi it has a lower noise level and a slight higher gain. The main category is quad antennas resources that is about quad antenna, how to build a quad antenna for ham radio use. Well trust me it will grow on you when you finally put up a cubical quad on a tower and you make some noise on the bands, and you realize you are able to hear a pindrop in mongolia on your reciever.
There are no shortage of old school yagi guys who will come up with some arcane nonsense as to why a quad isnt that good, and that would be because they never had one. Clerks in radio stores told me that this book was outselling other titles 2. To understand the text of the book requires some insight into johns perspective on antenna design. When the tower is in the operational position the elements are locked into position. Entire books have been written on the quad, the two most notable of which are the orr and cowan classic and the more recent detailed study by haviland. As a beginner, this numbering system can be easier to read than the notes. It works by letting the quad loops swivel out of the way. Computer simulation cannot impart the knowledge gained through reading these 3 book volumes. A fiveelement quad antenna for 2 meters by jim reynante.
Describe your experience with the high performance cubical quad antennas 3rd edition and tell us why you give it the rating you did required. Book figures for gain give 10 db over an isotropic radiator for a 4 element quad. Since the cubical quad works off the same principles, you must first understand the yagi antenna. Since its first introduction in the 1940s, the quad antenna has found uses in a number of areas. It should be remembered when considering its use that the quad, when fed at the bottom gives horizontal polarisation. No part of this book may be reproduced or transmitted in any form, by any. Development of the cubical quad from the folded dipole in fi9ure i end into the two element quad in. The 2element quad has almost the same gain as a 3element yagi. The antenna appeared to have been created well and no changes were. High performance cubical quad antenna 1994 edition.
Literature on all about cubical quad antennas paul two books i know of. A three element quad plus a 2ele brian hummerstone, g3hbr issue 61, may 1999. From experience, i know that quads significantly outperform most other aerials in difficult situations. The paperback of the all about cubical quad antennas by william i. All about cubical quad antennasthe famous handbook on quad theory, design, construction and operation.
From experience, i know that quads significantly outperform most other aerials in difficult situations such as very low heights or indoors, in lofts etc. All about cubical quad antennas has 2 available editions to buy at cubex quad antennas manufacturer of cubical quad antennas. It is interesting to note that the radiation pattern of the folded dipole. There are many reasons you should considering building your own antenna. Indeed, he subtitles his latest volume with just those words. This is a perfect lossless quad element under ideal conditions. 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. I have read all of k2obs sk books, and these are the bible of cubical quad antenna design. Radiowavz rwq2m4404x9 quasar dual band 2m 70cm 7 element quad antenna. When you see the number one, strike the smallest drum. The next type of beam is the cubical quad, my favorite. Product title school smart quad ruled composition book, 934 x 7.
First you can taylor it to the needs of your communication local or dx and optimize it for the frequency you talk on and to the needs of your environment make it strong if you live in a harsh one where ice and wind is a problem. The latest volume might be called the sum of his very extensive work with all varieties of quad beam forms since he first fell in love in about 1960. Several of you have asked for a plan of the 4 element quad that several of us have built. However, formatting rules can vary widely between applications and fields of interest or study. Predstavljamo vam elektronicko izdanje knjige u pdf obliku na engleskom jeziku cubical quad notes volume 2 rethinking the quad beam u kojem mozete pronaci jako puno zanimljivih detalja o nadaleko poznatim, priznatim i turbo popuparnim kvadovima za kv i ukv radioamaterske opsege. K1gmm q with martin on4aym 4 element long boom cubical quad. It is interesting to note that the radiation pattern of the folded dipole agrees in. According to bob heil in his book, heil ham radio handbook, there were articles in qst and cq magazine showing how to build a 10 meter quad. It was with surprise and delight that i noted that clerks in one radio. What is a quadlock the quadlock is a device that will let you tilt your tower all the way to the ground to work on your cubical quad antenna, rotator, or tower. High performance cubical quad antenna by john koszeghy, 1994, j. The cubical quad antenna likely got its name from the appearance of. Cebik, w4rnl, has published over a dozen books, with works on antennas for.
When you see the number four, strike the largest drum. My first test on the air with the new quad was on june 2 with some european propagation and 6 activations in the log with 310dxli a new dxcc among them. The history of the quad is succinctly told in the orr and cowan book on cubical quad antennas pp. High performance cubical quad antennas 3rd edition by john koszeghy, k3bb. However the cubical quad beam antenna is able to provide some advantages in a number of circumstances. May 23, 2012 open library is an initiative of the internet archive, a 501c3 nonprofit, building a digital library of internet sites and other cultural artifacts in digital form.
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