Dec 19, 2016 15 thoughts on the brilliant little tecsun pl310et. Low band dxing from a small city lot amateur radio station ws6x. 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. Read about softwaredefined radio, or pop in the included cdrom for a fully searchable pdf covering the entire 672page book. Heavy focus on antenna systems from dipoles to vertical arrays. Medium wave circle an introduction to long distance. Amateur radio dx news, dx peditions, calendars, contest,logs category is a curation of 1510 web resources on. This article is for those who may be new to am broadcast band mw band dxing and are looking for some strategies in helping them identify stations they are hearing amongst the noise and interference known as the am broadcast band. From lowband dxing to contesting from lowband dxing to contesting. 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. Cunningham, k6se, entitled flags, pennants, and other groundindependent low band receiving antennas. I found some interesting articles on the net, and a couple of pdf that ive embedded in an article dedicated to inverted l antenna for low bands.
Rappaport, multielement low band vertical arrays approaches for. 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. Describe your experience with the low band dxing by on4un and tell us why you give it the rating you did required. Contrary to some published propagation material, 40meter propagation does not peak to the west. This twopart article was originally written for and published in skip the monthly newsletter of the fresno amateur radio club farc. Nov 18, 2007 vhf low band ota antennas post by necrat fri may 10, 2019 1. My disappointing longwave dxing matthews workbench. Their unique aluminum enclosures are laser cut with stenciled chassis cutout labels of perfobox on one side and their power handling on the other side. If you like dxing on the low bands, 160, 80, 40, and 30 meters, these sites may be of interest they include info about both tx and low noise receiving antennas and techniques. Larry van horn, new products editor monitoring times. Website status checker program monitors your various website performances simultaneously in real time.
Dec 17, 2015 according to on4uns low band dxing book, the proper length for a delta loop should be 1. Are you want to read on4uns low band dxing ebook to read. Dx engineering four square, eight circle, beverage antenna systems. Building your own rf field strength meter electronic circuit projects, computer projects, hobby.
Use your tower as a dualband dx antenna for 7580 and 160 meters. Dxengineering, beverage antenna feed systems, amplifiers, voltage couplers. The 40meter band is the premier low frequency band, with longpath openings to central asia from october through march that are more reliable than 20 meters. Tips and techniques for low band dxing john devolderes book on 1608040 dxing. Invite some friends over and chase the rare ones with low band systems hf multiplexers.
Shortwave bulletin is produced in sweden basically in swedish, but contributions are normally presented in original language, so you will find all scandinavian languages as well as english in this bulletin. The skywave ssb model has a reputation of being one of the most sensitive ultralight radios, but the d808 clearly outperformed it on both low band fringe station 550kari and high band fringe station 1700city of auburn tis reception. The radio is sensitive enough but the heavy agc is extremely annoying. 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. This is a video showing the three low noise vertical antennas i use for mw and lw dx ing on my small suburban lot. History on the devoted primarily to the history of shortwave broadcasting and the shortwave broadcast dx hobby. The work presented in the article includes research by several other hams including jose, ea3vy. Web domain monitoring tool track website uptime, down time, response time and inform webmaster if server not found.
Mark has a complete journal of his experience with the radio. Nov 03, 2019 more on tv and fm dxing can be found here at the worldwide tvfm dx association. 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. 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. Wm7ds home page i use an yaesu ft920 for low band dxing.
If youve never tried listening to anything other than your local radio station on medium wave then these pages are intended to give you an insight into the stations you could hear, and how to identify them. Dec 12, 2008 both of these use a method of feeding the antennas thats described in the on4un low band dxing book called the christman feed. On4uns lowband dxing how to uninstall on4uns lowband dxing from your computer on4uns lowband dxing is a computer program. I have heard about phased vertical antennas but i think i will need 3. They are based on designs by dallas lankford and others and adapted to the. 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. Useful software also available to help with all aspects of phased array design. Includes useful operating tips and descriptions for many practical antennas needed to be successful on 160 meters. Theres something in here for every active low band operator, contester, and dx chaser. Jun 10, 2012 status of iss ham radio operations leave a reply iss amateur radio project engineer kenneth ransom, n5vho reports the ariss digipeater has changed frequency from 145. Get online free books in type, pdf, microsoft word, or a kindle ebook. This edition is thoroughly updated with entirely new material on lowband antennas and highgain transmitting arrays.
Arrl on4uns low band dxing fifth edition helps you to get the most and the best out of the low bands. Download link you could read on4uns low band dxing book on kindle devices, pc, phones or tablet computers. Lowband dxing, like a lot of challenging activities, can be. Theres something in here for every active lowband operator. Lots of technical information for the low band dxer. Includes antenna designs, operating guidelines, and an insiders scoop on lowband dxing. On4uns low band dxing john devoldere on4un, arrl inc. The article by bud, va7st, was particularly good in that he mentions an addition that allows the user to not only switch the endfire direction, but also configure it for broadside operation by feeding both antennas in. 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.
On4uns lowband dxing 5th edition by john devoldere on4un. Dxing on the edge jeff briggs k1zms book about dxing the top band 160m. Your guide to ham radio dxcitement on 160, 80, and 40 meters publication no. Maybe the vertically polarized halfsquare might be the antenna for you. Mediumwave broadcast band dxing will not stop just because of an eventual alldigital changeover. Dxing on the edge the thrill of 160 meters arrl inc.
Websdr tune and listen to software defined radio receivers worldwide. On4uns low band dxing by john devoldere on4un, arrl inc. Low band systems hf multiplexers are available in specific amateur band coverages that handle 200 watts, 500 watts or 1,500 watts icas and above, depending on model. Antennas, equipment and techniques for dxcitement on 160, 80 and 40 meters 5 by john devoldere, michelle bloom, nancy g. Theres an unmodulated spur coming out of the transmitter, at about 5 khz below the carrier frequencythis spur is independent of the carrier frequencyi observed it at both the low end and the high end of the fm band. 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. May 12, 2012 the best source of info on matching a shunt fed tower, that i know of, is on4uns low band dxing book. Only at is a web site dedicated to ham radio amateur radio.
W8ji also has a page on matching networks which has already been referenced by wa7prc. 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. This book is for amateur radio operators interested in the low bands of 2200, 630 and 160m, particularly those in north america. The myths of low band dxing by gerry ve6lb ve6lbs page and. Theres something in here for every active lowband operator, contester, and dx chaser. There are also chapters dedicated to phased arrays, other arrays, low band dxing from a small garden and from low band dxing to contesting free cd this book includes a cdrom with the entire book in a fully searchable pdf format as well as on4uns software windows xp only, antenna modelling files, photographs and more. For general listening, especially on sw, other antenna designs may be.
The most successful eme stations are accomplishments of engineering, with multiple phased antennas, lots of power, and low noise preamps that boost. Also contains additional on4un software and over 2000 quality photographs. On4uns lowband dxing is a software cd rom for learning about lowband radio stations. This is a guide to long distance listening dxing on the medium wave mw band. 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.
A fascinating chronicle of what it takes to navigate the 160 meter band. Over reactive agc makes it sound like the front end is being overdriven. 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. On4uns low band dxing 5th edition by john devoldere on4un author, arrl inc. I took the transmitter outside to our wooden picnic table and connected an ipod to the input as an audio source. Crane cc pocket, the sangean dt400w, the eton traveler iii, the tecsun pl310et, and the c. Keep in mind that low band dxing requires space to erect antennas. Rg179 cables, coax cut from same reel, then for phased array applications. Vhf low band ota antennas the virtual engineer broadcast. As mentioned in notes above, the arrl on4uns low band dxing fourth edition section 3. Low band dxing software free download low band dxing. Just to say my low band dx,hf vhf preamplifier is working very well. All towers and antenna configurations are different so usually you cant just copy something someone else has done.
Pion, kk7xo, is a retired electrical engineer, and holds a professional engineering certification in the state of california. Everyday low prices and free delivery on eligible orders. 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. Excellent antenna modelling software by roy lewallen w7el. Not only does that reduce equipment installation hassles, it can save money since theres no need for extra antennas and. The value of the inductor can easily be calculated using the line stretcher module of the new low band software. This page is comprised of details on how to uninstall it from your computer.
The book and his personal message to me was so appreciated and is one of my favorite ham possessions. Swb publish information of interest to the experienced dxer. The noted author shares the tips and techniques that can make your station a contest winner. Antennas, equipment, and techniques for dxcitement on 160, 80 and 40 meters covers receiving antennas and how to greatly enhance their operational bandwidth. Low band dxing part 1 of 2 as the searing valley heat gives way to somewhat more moderate temperatures, many hf operators especially low band dxers begin reinventing their antenna farms. On4uns low band dxing fifth edition 8560 dx engineering. My first test was to compare the stock skywave ssb model with the d808 in fringe am station reception. My contention is that this exciting niche of hf operating is available even to those who are real estate challenged. They allow multitransceiver stations to share a single multi band antenna. The dxlab suite is a free set of applications that support dxing activities.
Radio signals traveling at the speed of light take 2. The july 2000 issue of qst magazine published an article by earl w. You can use them individually, but when multiple dxlab applications are running they. Devoldere is a recognized expert on low band dxing, and his.
The exchange is typical, the dx is semirare, but the band is 80 meters. And any changeover will be years in the making unless the fcc suddenly mandates exclusive rights to digital and bans analog altogether. Using the halfsquare antenna for lowband dxing by rudy severns, n6lf 32857 fox lane po box 589 cottage grove, or 97424 this article was orinally published in the arrl antenna compendium vol. Low band dxing from a small city lot encouragement for little pistols. In my older 3rd edition 2002 vintage low band dxing book, the author mentions the new low band software. From low band dxing to contesting as i mentioned before, a cdrom is also included with the new fifth edition. It takes good mechanical engineering to keep the antennas up. On4uns low band dxing by john devoldere on4un, arrl. 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.
On4uns low band dxing june 1999 edition open library. Antennas, equipment and techniques for dxcitement on 160, 80 and 40 meters with cdrom revised by john devoldere isbn. My disappointing longwave dxing every shortwave radio i have ever owned has offered four bands. K0ff on dx effective transmit antennas for the low bands. He worked as an employee and consultant in the san francisco bay area until retiring to southern oregon last year. 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. Most hams start out dxing on the hf high bands of 20 through 10 meters. This wiki has been updated 21 times since it was first published in august of 2015. 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. Arrl on4uns low band dxing fifth edition dx engineering. This week ive started investigating on inverted l antennas for low bands 160 to 40. Arrl on4uns low band dxing by john devoldere radioworld. Probably the most definitive book ever published on low band dxing.
For all you hams out there, as well as anyone who wants an emergency notification system in the event of a natural disaster, take a look at our selection of shortwave radios. Low band dx antennas if you only buy one book about low band dx ing, this is it its a must it will take you years to get through it but every time you open it up you will learn something new that is very valuable ive purchased other books on all aspects of low and dx ing and after. 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. Expecially for restricted space scenarios, like mine. Dx engineering carries diplexers, triplexers, and quadplexers from low band systems.