K9ay is a loop developed in the early 1990s by american radio amateur gary breed k9ay. The model with the preamp sold for 140 gb pounds at the time of writing, including shipping to the usa. Lowband operators are always looking for ways to improve their hearing. The k9ay loop is meticulously built, and works very well. Another fb test on 80m with improved k9ay receiving antenna now the loop has abt 25m and its 8m tall. Even though i have not used a k9ay antenna cut for shortwave frequencies, my medium wave version is second only to my 500 foot beverage antennas when dxing the tropical bands. The k9ay terminated loopa compact, directional receiving antenna. The k9ay loop is ideal for larger arrays, since it has already has a directive pattern. It was apparent that many stations were copying me much better than i could hear them, so something needed to be done. How to build the k9ay loop receiving antenna ay technologies.
Hfedz end fed 10m160m hf antenna 200w ham radio antenna. Like k9ay, this antenna is less sensitive to common mode current problems than an usual flag or pennant antenna. As it came out later, the 80m antenna works also surprisingly well on 40m. Easy to build low band receiving antennas for small and.
Using the scaling rule from the antenna theory, many people were asking about the installation for 160m, expecting that it would also work on 80m. Download the original paper pdf document from k9ay here. Anyway, the main disadvantage is the need of two supports, the ve3do loop is sensitive to the soil properties and it cant be rotated. As a lowband fan, i was impressed with the ewe antenna developed by floyd koontz, wa2wvl. The wooden a frame support described in the arrl handbook and antenna book is an excellent choice. While outwardly appearing different, the ewe operating mechanism is no different than a flag, pennant, or k9ay. When i thought about building a k9ay loop antenna, i was thinking of a nice complement to the. The optimized terminating resistor was 486 ohms for best fb, average soil.
The ewe, pennant, flag and others all operate using the same principle as the k9ay loop, and they all provide a cardioid pattern with one deep null. Software psk and other porovnani solid converter mokry systems sp7dqr home. The amplifier is wideband with second and third order intermodulation performance that exceeds most general. Each type of antenna will eventually have its own page. The k9ay loop is one of the most popular receiving antennas which can fit in a small lot, and i built it in the summer 2006, exactly as designed by gary breed. How to build the k9ay loop receiving antenna gary breed, k9ay ay technologies 6677 sunset drive verona, wi 53593 email. As for all lowgain antenna, there could be some noise incursion common mode issues. The k9ay loop is one of several published designs that use a terminated loop to get a directional pattern in a small space. The wellbrook k9ay has been widely acclaimed by many dxers, and several articles have been written about it, among others by guy atkins and john bryant. Printing education for kids printer printing videos jewelry shirts printer projects new york code. The k9ay terminated loopa compact, directional receiving antenna wish you had enough room for an effective lowband receiving antenna.
Building upon the foundation laid by the ewe, k9ay, and the flag and pennant antennas, the sal featured true time delay phasing, and no need for a control wire from the shack to the antenna or grounding. This link is listed in our web site directory since saturday dec 14 20, and till today the mini k9ay antenna has been followed for a total of 671 ti. The ayl4 k9ay loop system requires 15 feet in four directions from the center of the antenna, plus additional dis tance depending on the guying method. Medium sized low band rx antenna solutions gary breed, k9ay expanded version of a presentation at the w9dxcc convention september 15, 2007, elk grove village, il with the low bands benefitting from the current sunspot minimum, receive antennas are important for dxers, contesters and other active amateur radio operators. The wellbrook k9ay antenna i purchased incorporates a lownoise 15db preamp. K9ay loop feeder with bpfs and preamp rx antena beverages and wire antennas acessories. There are hams who have built 4squares of k9ay loops and marveled at the extreme fronttoback performance. This is the popular k9ay loop receiving antenna, as described in the september 1997. Needs the controller and resistor box to complete the antenna system. A lot of info can be found on internet, and especially. All im totally certain of is that any antenna is better than no antenna and the antenna should preferably erected as high and be as long as is possible or desirable. K9ay 80160 meter switchable loop antenna system after operating a couple 160 meter contests last winter, i realized i needed to do something to improve my receiving performance. This link is listed in our web site directory since thursday feb 25 2010, and till today build a k9ay receive antenna has been followed for a total of 2998 times. The main category is k9ay loop antennas that is about k9ay loop antennas.
Back at the dayton hamvention in 20, array solutions debuted a new compact receive antenna system called the shared apex loop array, or sal. For example, two k9ay loops will have a far better directive pattern than is possible with two omnidirectional verticals. There have been many installations of the 4sq k9ay for 80m used in sp since early spring 2005. The k9ay antenna current and the feedlineasantenna current both travel through the ground resistance, and thus resistively sum up at the input to the feedline. Terminated loop basics the k9ay loop is one of several published designs that use a terminated loop to get a directional pattern in a small space. By gary breed, k9ay lowband operators are always looking for ways to improve their hearing.
Esa experiments with 3d printing antennas for space 3d. I would have used a bcd counter to drive the actual binarydecimal converter. A lot of info can be found on internet, and especially in the must read low band dxing by on4un. Printed antennas for automotive applications to integrate printed antennas in plastic body parts of automotives for the reception of electromagnetic waves such as amfm, gsm and many more is a very promising alternative to the standard rod antenna or. I have no room for beverages in fact several honest suppliers like k1fz and n0tt told me dont bother and directed me to this loop, so this was my only choice for a real receiving antenna with some theory behind it. May 20, 2017 obviously to support folding, either the antenna wire has to move along the ends of the arms or i have to detach the antenna wire from the base. The k9ay terminated loopa compact, directional receiving. It works well enough, but id love to get one of these units into the control box at the base of the antenna. Ive chosen to use a waterproof multiconductor plug to enable quick detachment of the antenna wires from the k9ay control box that will be located at the base of the antenna. Thus meeting the demanding requirements for the mw, topband and lw dxer. Last year, we reported on a project by the european space agency to test the possibilities of 3d printing antennas for possible use in space satellites.
Here are the instructions for constructing the loop itself. Since then dxers, ham operators and comerical enterprises, all have raved and ranted about this loop, calling it miraculous, stunning and the antenna that beats anything. A metal mast can be used, but make it only as long as necessary and insulate it from ground. Instead of a wire return to complete a transmission line path, the ewe relies on earth. The k9ay behaves just like two short sloped verticals with the same phase shift. About the minik9ay antenna the resource is currently listed in in a single category.
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. The w8jk is a famous and effective dx antenna ham radio. K9ay loops wish you had enough room for an effective low. Impressions and a field test k9ay loop antenna by bjarne mjelde c bjarne mjelde, 2000, 2001 the k9ay loop is with little doubt the hottest dx gadget among serious dxers today. The k9ay loop is one of the most popular receiving antennas which can fit in a small lot, and i built it in the summer 2006, exactly as designed by gary breed and sold by ay technologies as the ayl4 model. The preamp circuitry is of excellent quality, with very high ip2 and ip3 specifications. K9ay the saga of the shared apex loop array sal20 the finished product. At that point nothing can distinguish between the desired antenna signal and the undesired feedlineasantenna signal. Building upon the foundation laid by the ewe, k9ay, and the flag and pennant antennas, the sal featured true time delay. During this test im switching between east and west, so that you can see up to s79 of.
The k9ay loop is one of the most popular receiving antennas which can fit in a small lot. Remember, in the antenna control box, there are 2 grounds. My current k9ay is an amalgamation of parts removed from various equipment. This is the popular k9ay loop receiving antenna, as described in the september 1997 issue of qst, the k9ay terminated loopa compact, directional receiving antenna, by gary breed, k9ay. Wellbrook k9ay phased array 500khz to 2mhz the wellbrook k9ay phased array is a sophisticated broadband antenna system, designed for enhanced mw and 160m ham band reception. Large metal objects affect the antennas performance, so install it in the clear. I talked to with several hams about their experiences with the k9ay. I would have used a bcd counter to drive the actual binary decimal converter. Rx antena 4way rx antenna switch k9ay loops k9ay loop feeder with bpfs and preamp rx antena beverages and wire antennas acessories. Model ayl4 4way k9ay loop system this is the popular k9ay loop receiving antenna, as described in the september 1997 issue of qst, the k9ay terminated loopa compact, directional receiving antenna, by gary breed, k9ay. I took this in stages by playing with the pennant loop with vactrol circuit first. I have been looking for a good solution to the noise problem on receive and had heard about the k9ay loop antenna.
Weve destroyed the nice pattern of our receive antenna because the. Modular antenna switch antenna six to one switch antenna six to one switch kit antenna one to. It consists of a wire loop of any convenient shape diamond, delta, etc, hung from a single support and with a ground rod at the bottom. This amplifier is also available for home construction of the k9ay antenna and other similar applications. Feb 24, 2016 w2bris 12 foot 80 meter magnetic loop antenna. Hfedz end fed 10m 160m hf antenna 200w ham radio antenna. Wish you had enough room for an effective lowband receiving antenna. Mar 11, 2016 2 meter full wave loop the magic wand antenna by wb5ism. Modular antenna switch antenna six to one switch antenna six to one switch kit antenna one to two stack match antenna one to three stack match. This link is listed in our web site directory since saturday dec 14 20, and till today the minik9ay antenna has been followed for a total of 671 times.
Control wire 6 conductor and fed with rg6 catv coax. Obviously to support folding, either the antenna wire has to move along the ends of the arms or i have to detach the antenna wire from the base. Yes, i finally got around to putting up a k9ay loop. It belongs to the family of the small loops, like flags and pennants, but it needs a ground connection. If you wish to see my whole detailed circuit, look here pdf. About the mini k9ay antenna the resource is currently listed in in a single category. The k9ay antenna as produced by wellbrook communications is a marvelous antenna for medium and long wave dxing. It is a relatively small receiving loop that works well from 10 mhz and down. Thank you to frank sessink pa0fsb for submitting to us his document describing the k9ay loop antenna pdf, which is the antenna that he successfully uses.
Thank you to frank sessink pa0fsb for submitting to us his document describing the k9ay loop antenna pdf, which is the antenna that he. Gary breed, k9ay, developed a receive loop system that takes up very little space. Feb 23, 2016 hfedz end fed 10m 160m hf antenna 200w ham radio antenna ebay. The k9ay directional terminated loop antenna is a totally. Hf switchingmatching antenna six to two switch antenna six to two switch 2 triplexer ver. The base of the supporting pole and the ground rod are located at the center. Seems very few people have anything good to say about them. This system provides a cardioid directional pattern in. The original article by gary breed on which this antenna was based used a very clever idea for relay switching via a control voltage up the antenna cable a positive dc for the first relay, a negative one for the second, and ac for both at once. Describe your experience with the k9ay loop antenna kit and tell us why you give it the rating you did required. Model asayl4 4way k9ay loop system this is the popular k9ay loop receiving antenna, as described in the september 1997 issue of qst, the k9ay terminated loopa compact, directional receiving antenna, by gary breed, k9ay. About build a k9ay receive antenna the resource is currently listed in in 2 categories. It works well enough, but id love to get one of these units into the control box at.
Thank you to frank sessink pa0fsb for submitting to us his document describing the k9ay loop antenna pdf, which is the antenna that he successfully uses with his rtlsdr for hf reception. By gary breed, k9ay the 1 directional receiving antenna owband operators are always looking for ways to improve their hearing. This system provides a cardioid directional pattern in four different directions. Although very effective, beverages are often 500 to long, so are not practical for hams with small lots. For our contest group pa6z we needed some good receiving antennas for the low bands 160m, 80m and 40m.