Theory and practical designs for the experimenter reissue by sevick, jerry isbn. The w1jr type balun he describes uses 10 turns of a small coax i. Baluns are usually used to feed dipole antennas with 50ohm coax and to transpose from ladder line feeding a multiband antenna to the unbalanced input of an antenna tuner. This book is a good read to understand how the balun unun works. Understanding, building, and using baluns and ununs theory. Practical designs for the experimenter by communications cq, jerry sevick online at alibris. Jun 01, 2003 buy understanding, building, and using baluns anf ununs. Jerry embodied the oldfashioned amateur spirit of innovation by experiment, applying his many years of experience as a bell labs researcher to a retirement project analyzing the performance of short vertical antennas, said gary.
Understanding, building and using baluns and ununs thriftbooks. I guess i did that, but you guys stirred the pot, the can of worms was poured into. Understanding, building, and using baluns and ununs by dr. Understanding, building and using baluns and ununs. My first thought upon reading the first few sections is that the notation could be explained more clearly. Book depository books with free delivery worldwide. Click the button below to add the understanding, building, and using baluns to your wish list. Practical designs for the experimenter by sevick, jerry abebooks. Everyday low prices and free delivery on eligible orders. I was a little disappointed in the construction details. As a result the two new books will be entitled understanding, building, and using baiuns and ununs and the short vertical antenna and ground radial. He also coined the term unun to describe an unbalanced to unbalanced impedance transformer.
Understanding, building, and using baluns and ununs. Chokes, baluns and ununs a wcares presentation based upon information garnered from books. Buy both the cd and paperback and save see baluns combo. The understanding baluns part of the title seems covered a bit too superficially. Understanding, building, and using baluns and ununs by. Both of these should be on amazon thats were i got mine. Nov 20, 2017 understanding, building, and using baluns and ununs from cq communications offers clear explanations of how and why baluns and ununs work. If you really want to learn about serious balun design, please buy the following book from cq communications or the arrl bookstore and educate yourself about baluns.
Practical designs for the experimenter by sevick, jerry and a great selection of related books, art and. Understanding, building, and using baluns anf ununs. Understanding building and using baluns and ununstheory and practical designs for the experimenter. Read the above book and you will have a good understanding of how to pick the proper ferrite and wind baluns as well as ununs. Jerry sevick, w2fmi sk american radio relay league. Understanding, building, and using baluns and ununs may.
Buy a cheap copy of understanding, building, and using. Buy understanding, building, and using baluns and ununs. Jerry sevick, w2fmi, in his book understanding, building and using baluns and ununs, describes a number of baluns and ununs for different ratios and purposes. Rent understanding, building, and using baluns and ununs theory and practical designs for the experimenter 1st edition 9780943016245 and save up to 80% on textbook rentals and 90% on used textbooks. Cws bytemarks baluns balanced to unbalanced and ununs unbalanced to unbalanced.
The baluns are shown as schematically as parallel inductors. And please, dont believe all you read on the web about these useful devices. See jerry sevick, w2fmi, understanding, building, and using baluns and ununs, cq communications, 2003. Building and using baluns and ununs by w2fmi, jerry sevick. I have both transmission line transformers first ed, 1987 hardcover and understanding, building and using baluns and ununs 2003 paperback. Apr 28, 2010 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. Book, reference, sevick, w2fmi, understanding, building, and using. Comtek jerry sevick w2fmi series current baluns combal. Comtek jerry sevick w2fmi series current baluns were inspired by the writing of jerry sevick, as published in his book understanding, building, and using baluns and ununs also available from dx engineering. Jerry sevick author of transmission line transformers. Practical designs for the experimenter by sevick, jerry and a great selection of related books, art and collectibles available now at. Thriftbooks sells millions of used books at the lowest everyday prices. Understanding building and using baluns and ununs theory and practical designs for the experimenter.
He also wrote understanding, building and using baluns and ununs and the short vertical antenna and ground radial. Be rugged enough for field use be water resistant for portable field use the trb design i went to my copy of understanding, building and using baluns and ununs by jerry sevick, w2fmi. We personally assess every book s quality and offer rare, outofprint treasures. In order for this book to be useful for me to understand baluns i suspect that i should have read the book about transmission line transformers first and then. Includes a great deal of new tutorial material, designs, and explanations of how and why they work. Cq communications understanding, building, and using. Theory and practical designs for the experimenter is written by jerry sevick, a renowned authority on transmission line transformer theory.
Cq communications understanding, building, and using baluns. Practical designs for the experimenter sevick, jerry on. The primary reason for using a balun at the feed point of a dipole antenna is to prevent rf currents from flowing on the outside of the shield of the coax feeding the antenna. The book building and using baluns and ununs by jerry sevick, w2fmi, has a whole chapter on building 4. I found that transmission line transformers was heavier on the theory and the other one had more ready to build designs. Understanding, building and using baluns and ununs by jerry. Feb 05, 2010 in some ways the two books are complimentary, although tlt is newer. Top american libraries canadian libraries universal library community texts project gutenberg biodiversity heritage library childrens library. Understanding building and using baluns and ununs theory and practical designs for. Page 3 of 3 building, and using baluns and ununs by jerry sevick, w2fmi, is widely recognized as a definitive source of balun information. He undertook the characterization and design of transformers for low impedance applications, resulting in his book transmission line transformers, published in 1987 by the arrl.
There have been many advancements in this area in recent years, due to availability of more advanced test equipment. Nfarl antenna special interest group sig selfstudy reading assignments month 4 feedlines, baluns and chokes what, why and where week 1 for net discussion on 04082010 transmission line theory basic theory of transmission arrl antenna book, pp. I am assuming that can get me in trouble that the bigger books may have all and more that the smaller books. Comtek baluns are valueengineered for maximum performance at a reasonable cost. If you are designing baluns you should have this book. Theory and practical designs for the experimenter by jerry sevick online at alibris. This excellent book has many balun designs and measurements of their losses.
Guanella balun is the basic building balun building block. To understand and apply these transformers, one must be familiar with transmission line theory, con ventional transformers, and general circuit theory. Yagi, trap tribander comtek jerry sevick w2fmi series current baluns were inspired by the writing of jerry sevick, as published in his book understanding, building, and using baluns and ununs also available from dx engineering. If you want a balun connect the so239 ground to the center tap of the toroid and connect the so239 center pin to either binding post. Understanding, building, and using baluns and ununs open. He also wrote understanding, building and using baluns and ununs. Isbn 9780943016092 9780943016092 softcover, cq communications, 1995. Jerry sevick is the author of transmission line transformers 3. Chokes, baluns and ununs a wcares presentation based upon information garnered from books and the internet from amidon, wikipedia, jerry sevick w2fmi, tom rauch w8ji, and technical notes from dx engineering and balun designs. It features page after page of new tutorial material, designs, and the use of baluns and ununs for dipoles, yagis. Baluns and ununs can be wound in many different ways, but the material you wind round also makes a massive difference.
Theory and practical designs for the experimenter jerry sevick published by cq communications, hicksville, new york 2003. Find signed collectible books by jerry sevick building and using baluns and ununs. Understanding, building and using baluns and ununs theory and practical designs for the experimenter. Jerry sevick is well known in the amateur radio community and his work on transmission line transformers, baluns and ununs, has been adopted as a standard by the ieee. After reading through it, i decided to build the ruthroff design. Cq communications publications sevickbalcd free shipping. Buy both the book and cd and save see baluns combo. Understanding, building and using baluns and ununs by jerry sevick and a great selection of related books, art and collectibles available now at. Full text of understanding building and using baluns and ununs. We have new and used copies available, in 0 edition starting at. Understanding, building, and using baluns and ununs from cq communications offers clear explanations of how and why baluns and ununs work. Understanding, building, and using baluns and ununs may 15. Open library is an open, editable library catalog, building towards a web page for every book ever published.
Theory and practical designs for the experimenter by jerry sevick online at alibris uk. Practical designs for the experimenter by jerry sevick isbn. May 15, 2003 understanding, building, and using baluns and ununs book. Practical designs for the experimenter and a great selection of related books, art and collectibles available now at. In the worst case with a bad set of parameters you can lose 10db or more. Full text of understanding building and using baluns and. Discussion in general technical questions and answers started by kd0cac, feb 5, 2010. This cd contains a great deal of new tutorial material, new designs not in his previous books and crystal clear. For more information on winding details there is a lovely book by jerry sevick w2fmi called understanding, building and using baluns and ununs, theory and practical designs for the experimenter which is a brilliant book. Understanding, building, and using baluns and ununs from cq. Understanding, building and using baluns and ununs by. Paperback vimip 8mp 1080p hdcvitviahd video balun mini cctv bnc passive video balun transceiver 4 pairs. Nfarl antenna special interest group sig selfstudy reading assignments month 4 feedlines, baluns and chokes what, why and where week 1 for net discussion on 04082010.
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