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. Instead of a wire return to complete a transmission line path, the ewe relies on earth. 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. For example, two k9ay loops will have a far better directive pattern than is possible with two. About build a k9ay receive antenna the resource is currently listed in in 2 categories.
One very popular receive antenna is the beverage, which is essentially a very long wire usually about 68 above the ground. K9ay loops wish you had enough room for an effective lowband. The k9ay loop is ideal for larger arrays, since it has already has a directive pattern. Noise canceling as explained in the april 2014 issue of. I did modify my proii so the receive antenna is disconnected during transmit and the problem went away. Some observations on the k9ay receive directional antenna tom mcdermott, n5eg january 12, 2010 the k9ay antenna is a popular, compact receive directional antenna commonly used on the 80 and 160 meter amateur bands to improve the signaltonoise ratio 1.
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 system provides a cardioid directional pattern in four different directions. Ive used for k9ay supports fiberglass fishing poles 8 meters long they costs each. The k9ay loop is meticulously built, and works very well. K9ay loops wish you had enough room for an effective low. Canada v8r 4z6 by john bryant, stillwater, ok, may 2000 the wellbrook k9ay antenna consists of two chassis. There is a feeling they burnout very quickly and are less than reliable for antenna use. About the mini k9ay antenna the resource is currently listed in in a single category. Modular antenna switch antenna six to one switch antenna six to one switch kit antenna one to. About the minik9ay antenna the resource is currently listed in in a single category. Back at the dayton hamvention in 20, array solutions debuted a new compact receive antenna system. Lowband operators are always looking for ways to improve their hearing. Comments the switchable receive antenna is a nice addition. There are hams who have built 4squares of k9ay loops and marveled at the extreme fronttoback performance.
It resembles a delta loop, but is a very good directional receiving antenna. The main category is k9ay loop antennas that is about k9ay loop antennas. Martin francis ndb k9ay mast revised th july, 2004 main dx pages. The k9ay antenna as produced by wellbrook communications is a marvelous antenna for medium and long wave dxing. While outwardly appearing different, the ewe operating mechanism is no different than a flag, pennant, or k9ay. Some people have assembled this antenna, but have had difficulty in achieving an acceptable. Remember, in the antenna control box, there are 2 grounds. Although very effective, beverages are often 500 to long, so are not practical for hams with small lots. While outwardly appearing different, the ewe operating mechanism is no different than a flag. K9ay the saga of the shared apex loop array sal20 the finished product.
Gary breed, k9ay, developed a receive loop system that takes up very little space. As a preliminary test, ive disconnected 3 positions of 4 square k9ay array and tried operate on single k9ay antenna. The wellbrook k9ay antenna i purchased incorporates a lownoise 15db preamp. 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. Martin francis ndb k9ay mast revised th july, 2004. By gary breed, k9ay lowband operators are always looking for ways to improve their hearing. K9ay loop faqs rf feedback and rx front ends my radio is an ic756proii, driving an alpha 76a amplifier 1500 watts out and i did have feedback from the loop that distorted my transmit signal. 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.
The tentec orion has such separate receive antenna port to protect the front end of the rig from damaging currents when transmitting, frontend protection similar to that sold by array solutions is needed. Although very effective, beverages are often 500 to long, so. It was apparent that many stations were copying me much better than i could hear them, so something needed to be done. My current k9ay is an amalgamation of parts removed from various equipment. Rx antena 4way rx antenna switch k9ay loops k9ay loop feeder with bpfs and preamp rx antena beverages and wire antennas acessories. Oct 31, 2016 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. Canada v8r 4z6 by john bryant, stillwater, ok, may 2000 the wellbrook k9ay antenna consists of two chassis mounted in substantial plastic boxes. The wellbrook k9ay antenna consists of two chassis mounted in substantial plastic boxes. As for all lowgain antenna, there could be some noise incursion common mode issues. The antenna combines magnetic h and electric e field reception in order to create a directive radiation pattern. How to build the k9ay loop receiving antenna gary breed, k9ay ay technologies 6677 sunset drive verona, wi 53593 email. For example, two k9ay loops will have a far better directive pattern than is possible with two omnidirectional verticals. This antenna system is the only broadband phased k9ay to offer a unidirectional pattern similar to the beverage, over 360 degrees with electronic null optimisation.
The k9ay terminated loopa compact, directional receiving antenna. Other useful information would include your experience with similar products. The ayl4 consists of two units, an indoor control box and an outdoor. Asayl4 mw kit ayl4 mast and wire kit description includes six mast sections of 4 ft effective height 44. The k9ay behaves just like two short sloped verticals with the same phase shift. 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. For our contest group pa6z we needed some good receiving antennas for the low bands 160m, 80m. K9ay interfacing connecting the k9ay antenna requires a dedicated receive antenna port on your rig. For our contest group pa6z we needed some good receiving antennas for the low bands 160m, 80m and 40m. A lot of info can be found on internet, and especially in the must read low band dxing by on4un. Dynamic visual web design using transparent layers and master pages.
Comprised of a 85 foot loop with a switching box located at the bottom feed point. The relays are large, 12 vdc units which do not have the best. Mediumsized 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. Model ayl4 4way k9ay loop system this is the popular k9ay receiving loop, as described in the september 1997 issue of qst, the k9ay terminated loopa compact, directional receiving antenna. Mediumsized low band rx antenna solutions gary breed, k9ay expanded version of a presentation at the w9dxcc convention september 15, 2007, elk grove. 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. Installation instructions ayl4 4way k9ay loop system. The k9ay terminated loop a compact, directional receiving. The k9ay terminated loopa compact, directional receiving antenna wish you had enough room for an effective lowband receiving antenna. Frank extends the idea by showing a method that can adjust the directivity electrically. Microsoft word this is how the k9ay receiving antenna works 9c.
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. 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. Yes, i finally got around to putting up a k9ay loop. The dx engineering aaps31p active antenna phasing system, featuring the ncc1 receive antenna phasing controller figure 7, is one such advance. Here are the instructions for constructing the loop itself. Model ayl4 4way k9ay loop system this is the popular k9ay receiving loop, as described in the september 1997 issue of qst, the k9ay terminated loopa compact, directional. 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. I took this in stages by playing with the pennant loop with vactrol circuit first. The user supplies the necessary wire loops, mast, leadins, etc. 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. 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. The preamp circuitry is of excellent quality, with very high. The relays are large, 12 vdc units which do not have the best contacts. Wish you had enough room for an effective lowband receiving antenna.
Seems very few people have anything good to say about them. Jan 30, 2017 the k9ay is a receiving loop antenna that works well on the lower frequency bands. Fasten the antenna wires effectively the top guys first, and let the nylon ropes dangle better still, tape them to the sides of the mast temporarily before you start, so the wind doesnt make the whole thing into a maypole. Here some observations regarding this upgrade, in no particular order. K9ay loop faqs rf feedback and rx front ends my radio is an ic756proii, driving an alpha 76a amplifier 1500 watts out and i did have feedback from the loop that distorted my transmit. Generally signal strength is much lower on the k9ay than the vertical however, the noise floor is substantially lower as well the.
Flag antenna reversal 1566 khz, 20100609, direction 21030030120, 20 sec each. 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. 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 674 ti. As a lowband fan, i was impressed with the ewe antenna developed by floyd koontz, wa2wvl.
Any wire longer than 60 meters beats single k9ay antenna. Hf switchingmatching antenna six to two switch antenna six to two switch 2 triplexer ver. 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. Describe your experience with the k9ay loop antenna kit and tell us why you give it the rating you did required.
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