Links ive included some other links to areas that be of interest to the low band enthusiast. The exchange is typical, the dx is semirare, but the band is 80 meters. My father is a fast builder ofamateur radio projects, from printedcircuit artwork drawn by him with cad software to working units in our home laboratory. Larry van horn, new products editor monitoring times. The antenna is modeled using the eznec 1 package, built upon the nec 2. Are you want to read on4uns low band dxing ebook to read. Not only does that reduce equipment installation hassles, it can save money since theres no need for extra antennas and.
This can influence the accuracy of the modeled results. The most successful eme stations are accomplishments of engineering, with multiple phased antennas, lots of power, and low noise preamps that boost the received signal without increasing the noise. In the 4th edition of on4uns low band dxing weiss has this to say about the asymmetrical vertical dipole using this concept we can envisage a 38 wave vertical to be used in conjunction with, say, 18 wave long radials. Sep 29, 2019 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. On4uns low band dxing 5th edition by john devoldere on4un author, arrl inc. Theres something in here for every active low band operator, contester, and dx chaser. Feb 16, 2017 are you want to read on4uns low band dxing ebook to read.
Pa3cqrs grayline program software that will calculate sunrisesunset at your qth. Read about softwaredefined radio, or pop in the included cdrom for a fully searchable pdf covering the entire 672page book. Dx qsos can be made on the fm satellites using a dualband ht and a handheld dualband yagi, such as the arrow or elk antennas. Lance johnson engineering low band products low band operators photo gallery low band monitor awards program eznec. Low band dxing from a small city lot encouragement for little pistols.
Describe your experience with the low band dxing by on4un and tell us why you give it the rating you did required. Butternut hf6v 6 band hf operation dx engineering part number. The trap is tuned to the low end of the 80 meter band. In fact, i could easily live with this as my only receive antenna and be quite happy for low band reception. This 600 page third edition covers all the practical information you need to operate a highly successful station on the low bands. Antenne cadre wikipedia arrl on4uns low band dxing bibliography for antennas books antenna radio ebook is an electronic version of a traditional print book this can be read by using a personal computer or by using an ebook reader. The low band crowd focuses a great deal of attention on their antennas in the never ending pursuit of greater efficiency. Technical knowledge and technical achievements are undoubtedly great assets in achiev ing success in lowband dxing. On4uns lowband dxing is a software cd rom for learning about lowband radio stations. A highlevel accessory front end for the hf amateur bands. Antennas, equipment and techniques for 160, 80, and 40 meters. Current events discussions relating to broadcast engineering. Apr 08, 2020 lowbanders know about asymmetrical feed.
Arrl on4uns low band dxing fifth edition dx engineering. Be sure to detuning transmitting antenna you can switch antennas tuner to other band, better 30 m or 40 m. Get online free books in type, pdf, microsoft word, or a kindle ebook. The myths of low band dxing by gerry ve6lb ve6lb, youre 58 on norfolk island, over vk9ns, thanks jim youre 59 here in calgary, 73s.
Theres something in here for every active lowband operator. The july 2000 issue of qst magazine published an article by earl w. Antennas and techniques for low band dxing, by john devoldere, on4un. And yes, top band certainly is where the dxer can get the ultimate sense of satisfaction. We could call it lake devoldere in honor of on4un who has contributed so much to lowband dxing. Includes new insights and new design techniques for receiving antennas and vertical arrays. This twopart article was originally written for and published in skip the monthly newsletter of the fresno amateur radio club farc. Arrl amateur radio book n4uns low band dxing john devoldere, on4un 9780872598560. There is only a small section at the back of the book dedicated to small space antennas so dont expect to find that super antenna for 160m that works from an apartment. Arrl on4uns low band dxing fifth edition helps you to get the most and the best out of the low bands. My system has 16 foot elements in a 40 foot square just fits in my yard, is heavily compromised by other antennas and buildings, has lankford style ppl emitterfollower active elements and uses shielded cat5e feed lines.
Pion, kk7xo, is a retired electrical engineer, and holds a professional engineering certification in the state of california. My disappointing longwave dxing matthews workbench. Low band dxing from a small city lot amateur radio station ws6x. This cdrom includes the entire book in a fully searchable pdf format, as well as devolderes software windows xp only, antenna modeling files, photographs and more. Last month i talked about the lure of low band dxing and of the enormous amount of fun and satisfaction available to those who jump into the fray.
Qsl cards, certificates, and other items decorating the walls of. Flags, pennants and other groundindependent lowband receiving antennas. The best source of info on matching a shunt fed tower, that i know of, is on4uns low band dxing book. On4uns low band dxing on4uns low band dxing produk deskription. Low band systems multiplexers and band pass filters 18feb16 now available at dx engineering, ham radio operators can use low band systems multiplexers to connect multiple radios to a single multiband antenna, allowing each radio to operate on a different band simultaneously. Download link you could read on4uns low band dxing book on kindle devices, pc, phones or tablet computers. Since an important part of the analysis was looking at band sweeps of antenna characteristics, eznec was run in sweep mode, and the resulting data was post processed with the lbdxview package. Low band antennas at w3lpl high performance transmitting and receiving antennas for 160, 80 and 40 meter dxing and contesting lessons learned from. The performance of the antenna, through the model, will be explored in several typical settings. On4uns lowband dxing 5th edition by john devoldere.
May 20, 2012 in 1987 my last iron curtain was lifted. Solid signal has several candidates that extend down to the vhf low band. Antennas, equipment and techniques for dxcitement on 160, 80 and 40 meters with cdrom revised by john devoldere isbn. A circuit that can turn a transmitter on and off automatically whenever someone speaks into the microphone. The arrl on4uns low band dxing fifth edition helps you to get the most and the best out of the low bands. It also covers an examination of phased arrays and new concepts like hybridfed foursquare arrays and oppositevoltage feed.
The work presented in the article includes research by several other hams including jose, ea3vy. Last month i talked about the lure of lowband dxing and of the enormous amount of fun and satisfaction available to those who jump into the fray. In this blog, you will find my experiences with various software packages, radios, amplifiers and antennas. Low band dxing from a small city lot amateur radio ham. Lowband dxing, by john devoldere, on4un, pages 15 to 1148 and 1155 to 1163, plus optional software with a tutorial and engineering detail, second edition, published by arrl. Tips and techniques for low band dxing john devolderes book on. We do not have backgrounds in electronic engineering, but we do have a lot of practice. The lowband monitor a newsletter dedicated to the 1608040m dxer.
Keep in mind that low band dxing requires space to erect antennas. Everyday low prices and free delivery on eligible orders. The fm, am, and shortwave bands are always filled with stations although shortwave less so these days but the longwave band for me has always been empty. W8ji also has a page on matching networks which has already been referenced by wa7prc. Those so bitten will often spin lengthy yarns, telling of conquests, new entities worked, and of the pure joy of 46 months spent trying to squeeze qsos out of the noise on 160 meters. For example, on4uns low band dxing third edition, dont miss reading the new chapter special. 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.
Lots of technical information for the low band dxer. Theres something in here for every active lowband operator, contester, and dx chaser. We package all books in custom cardboard book boxes for shipment and ship daily with tracking numbers includes antenna designs, operating guidelines, and an insiders scoop on low band dxing. Feb 18, 2016 now available at dx engineering, ham radio operators can use low band systems multiplexers to connect multiple radios to a single multiband antenna, allowing each radio to operate on a different band simultaneously. Now, 14 of elevation on the low bands is a very big deal, but on 20 meters and above, its not that hard to imagine. From low band dxing to contesting as i mentioned before, a cdrom is also included with the new fifth edition. On4uns lowband dxing 5th edition by john devoldere on4un. On4uns low band dxing fifth edition 8560 dx engineering. This edition is thoroughly updated with entirely new material on lowband antennas and highgain transmitting arrays. The myths of low band dxing by gerry ve6lb ve6lbs page and. Modeling the w6nl 40m moxon greg ordy, w8wwv april, 2012 v1. Most hams start out dxing on the hf high bands of 20 through 10 meters. Antennas, equipment and techniques for dxcitement on 160, 80 and 40 meters covers receiving antennas and how to greatly enhance their operational bandwidth.
In my older 3rd edition 2002 vintage low band dxing book, the author mentions the new low band software. Five, five, five pound portable moxon for 20m qrz forums. With the hint of fall comes the anticipation of another exciting winter dx season. The arrl antenna book by r dean straw, n6bv, published by arrl. Stellar performer in low band contests since november. Good detail for building your own matching and switching system. The pages are clean, crisp, unmarked and uncreased. Gladiator verticals160m and 80m verticals used for the vk0ir heard island dxpedition. For each sdr we compare the cost, frequency range, adc resolution, maximum instantaneous bandwidth, whether or not it can tx and if it has any pre selectors. There is a surprising amount of dx on the low bands, the secret is to know when and where to listen for it this also applies to the high band. I still have a dog eared copy of on4un low band dxing that advocates corner fed delta loops for 80 meter dx work. Low band receiving loops and the evolution of the trapped inverted l.
As the searing valley heat gives way to somewhat more moderate temperatures, many hf operators especially low band dxers begin reinventing their antenna farms. Amateur radio dx news, dx peditions, calendars, contest,logs category is a curation of 1510 web resources on. Dxing on the low bands receiving and transmitting equipment antenna design software antennas. This one is a project i have been toying with for many months. Antennas, equipment and techniques for dxcitement on 160, 80 and 40 meters john devoldere on. The noted author shares the tips and techniques that can make your station a contest winner.
Nov 16, 2014 this blog is for all the guys that live on city lots who enjoy contesting, dxing and just general operating. K0ff on dx effective transmit antennas for the low bands. Also contains additional on4un software and over 2000 quality photographs. Lbdxview is available on the internet, and is also included on the cd included with the 5 th edition of on4uns lowband dxing. Also, there are various software packages available, some of which do not include all the professional tools available to paid versions. Pdf download ebook on4uns low band dxing free online book. Pdf download ebook on4uns low band dxing free online. W1dyj larry banks dxcc was vucc wac wpx antenna modeling mmra march 2016 agenda some w1dyj background a brief view of arrl software arrl handbook on4uns low band dxing the antenna book tlw yw hfta eznec page 2 and hopefully you will learn some theory and gain some. The virtual engineer broadcast engineering forums index page. For the ssbcw satellites, a satellitecapable transceiver, or two allmode radios capable of operation on 2 meters and 70 centimeters, along with dualband antennas, can successfully make dx qsos. In the 4th edition of on4uns low band dxing weiss has this to say about the asymmetrical vertical dipole.
My main low band transmitting antenna is a trapped inverted l. My disappointing longwave dxing every shortwave radio i have ever owned has offered four bands. Jul 03, 2019 radio signals traveling at the speed of light take 2. Information on this system is available in john devoldores low band dxing book from arrl. Dx engineering at dx engineering, amateur radio is what. He worked as an employee and consultant in the san francisco bay area until retiring to southern oregon last year.
Msg engineering ltd bibliography a switchable four element 80meter phased array, by fred collins, w1hkkw1cf, march 1965 qst. While this may seem like a lot of effort for not much in return, the bite of the low band dx bug is very intoxicating. Pushing your station to make contacts over greater and greater distances dx means distant stations is the second oldest activity in all of ham radio. May 12, 2012 the best source of info on matching a shunt fed tower, that i know of, is on4uns low band dxing book. There are lots of stations active, the antennas are manageable in. Arrl on4uns low band dxing by john devoldere radioworld. I enjoy hf dxing whenever i can around zl dawn sometimes and dusk most evenings on the low bands 304080m, with no antenna for 160m at the moment and for the odd spare hour in the middle of the day on hf since my home office is my shack, conveniently enough. Heavy focus on antenna systems from dipoles to vertical arrays.
The asymmetrical hatted vertical dipole did not escape their search. For example, on4uns low band dxing third edition, dont miss reading the new chapter special receiving antennas, qst, the antenna compendium series and k1zms dxing on the edgeall published by arrl. We have seen them presented by our trusted teachers in recent artieles in amateur radio publications. Aug 20, 2014 new software defined radio sdrs products are popping up every few months these days so we thought wed compile a big list of available sdrs as there are a few people who were bitten by the rtlsdr bug and are now looking to upgrade. Includes antenna designs, operating guidelines, and an insiders scoop on lowband dxing. Now, to dispel the myths, point by point, and then provide some tips on low band dxing, then to get on with successful low band dxing. The trick is that, for dxing on a band like 160, a directional receive antenna like a terminated beverage can often do a much better job than a vertical because the vertical picks up noise from all directions while the beverage picks up noise from only one direction. The cdrom includes the entire book in a fully searchable pdf format as well as on4uns software windows xp only, antenna modeling files, photographs and more.
All towers and antenna configurations are different so usually you cant just copy something someone else has done. My contention is that this exciting niche of hf operating is available even to those who are real estate challenged. Somewhere out in the ether, a station is always just tantalizingly out of reach and the challenge of contacting that station is the purpose of dxing. Rg179 cables, coax cut from same reel, then for phased array applications. Devoldere is a recognized expert on low band dxing, and his. In our market, one of the local tv stations opted for the band 1 option of the repack and are going to vhf channel 5 from uhf. The book and his personal message to me was so appreciated and is one of my favorite ham possessions. You will find discussion of just about every mode from ssb to sstv to all of the digital modes. Cunningham, k6se, entitled flags, pennants, and other groundindependent low band receiving antennas. About the beverage antennas receiving antennas an article about the beverage antennas, super long wire receiving antennas thar are unidirectional and have a very low noise that makes this antenna excellent for low band dxing.
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