K9ay antenna pdf writer

The use of the high gain amplifier together will a low capacitance antenna matching transformer provides very high antenna feeder isolation, this ensures that any. This not only shows that one can null a signal on the 90 and 5 sides of the loop in addition to the 180 null, but it seems to confirm a finding made at a grayland, wa dxpediton, namely that the loop has a distinct and relatively sharp front lobe that is more sensitive than settings 45 away. Improving front to back ratio of the k9ay loop cheaply. The k9ay antenna as produced by wellbrook communications is a marvelous antenna for medium and long wave dxing. The dx engineering dxe60ve1p is a fast taper 43 feet high vertical antenna system. To compensate, the preamplifier provides 15 db gain, with a filter that passes approximately 1. The k9ay loop antenna for 160 and 80 m bands, by on7eq. The rf communication includes read andor readwrite communication with, e. K9ay loop schematic trattoria sapori di mare e monti. Apr 8, 2018 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. 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. With the arrival of the 20072008 winter season, i left it unchanged.

Close spaced arrays of two small terminated loops k9ay array shared apex loop array. I put up an inverted l but was disappointed in the amount of noise it picked up on receive. I would have used a bcd counter to drive the actual binarydecimal converter. Instruction book, model 43 wattmeter, bird electronic corp, solon, oh. Control wire 6 conductor and fed with rg6 catv coax. Matching antenna 18 may improve andor optimize transmission andor reception using antenna 18. It resembles a delta loop, but is a very good directional receiving antenna. A system to multiplex antennas for radiofrequency communication uses one or more antenna shorting circuits to selectively enable rf communication via one of a plurality of antenna matching networks. Most transmit antennas used on 630m and 2200m are omnidirectional, therefore no. In some installations, the antenna may retain some directivity. Thank you to frank sessink pa0fsb for submitting to us his.

Even though i have room for a couple of beverage antennas, the k9ay array at my qth gets a lot of use. In most cases satisfactory results will be obtained by mounting the antennas at least 30m away from buildings. How to build the k9ay loop receiving antenna ay technologies. For convenience, i have come to refer to this antenna as a kaz10x40 or just the kaz. This article pdf by kevin schanilec is a summary o. The antenna seems to work a little better with them than without, so they stay. Frank extends the idea by showing a method that can adjust the directivity electrically. 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. Jan 30, 2017 the k9ay is a receiving loop antenna that works well on the lower frequency bands. Kennedy n4gg a fabulous power point document about his k9ay. If you dont want to make the loop using homebrew construction, we also offer the.

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. Download the original paper pdf document from k9ay here. As for all lowgain antenna, there could be some noise incursion common mode issues. 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. Ive operated a fourloop k9ay antenna for two years now, both in my winter. Therefore, 4 square k9ay array is operating effectively on two neighboring amateur bands in case of my setup. The k9ay loop antenna wire, support and ground system. This antenna was developed using details published here, but with certain modifications. Protection is provided by a 4 plastic pipe with cemented cap. The third box on top of the stackmatch controls was used as the original k9ay controller. Many broadcast band dxers marvel at the way switching the pattern lets you hear different stations on the same frequency. While writing the first half of this article, i enjoyed listening to xedg, 700 khz. The main category is k9ay loop antennas that is about k9ay loop antennas.

A k9ay loop accompanied al to newfoundland on the very successful 1998 dxpedition. Two or three close spaced 500 to 600 foot beverages, staggered 125 feet 11 db. From that moment, even after rewinding the transformer, changing the vactrol, the performance was even worst than before. Matching may be based on electromagnetic properties of antenna 18. Yes, i finally got around to putting up a k9ay loop. As a lowband fan, i was impressed with the ewe antenna developed by floyd koontz, wa2wvl. Currently the small white box with the black knob controls the k9ay. Unidirectional terminated small loop flag, pennant, ewe, ve3do 8 db. Here are the instructions for constructing the loop itself.

Single wire beverage the simplest and most reliable high performance receiving antenna. As supplied, the vertical antenna is designed to operate on 60 meters. Comprised of a 85 foot loop with a switching box located at the bottom feed point. Ive operated a fourloop k9ay antenna for two years now, both in my winter home in oklahoma and at my summer cottage on orcas island north of seattle. The shared apex array sal30 antenna and other low band rx. Even though i have room for a couple of beverage antennas, the k9ay array at my qth gets a lot of use this antenna is originally described in the september 1997 issue of qst. His web site url was posted on the k9ay yahoo group. K9ay is a directional receive antenna, with a fronttoback ratio of x db and fronttoside ratio of y db id have to look up x and y. Phasing k9ay antennas, to make better directional system, is nothing new. Sp3rbr has invented a quite new phasing networks, appropriate for his 4 square k9ay array.

The system is costefficient compared to alternatives. The k9ay loop wires can be seen terminating into the relay box. Frank extends the idea by showing a method that can adjust the. Bbl1 documentation pdf document this antenna was first described by gary breed, k9ay, in qst magazine, september 1997, with an update in the qst of may 1998. Installers must ensure that 20 cm separation distance will be maintained between the device excluding its handset. K9ay loop schematic teatro stabile citta di manfredonia. This link is listed in our web site directory since sunday mar 25 2007, and till today how to build the k9ay loop has been followed for a total of 8232 ti. The shared apex array sal30 antenna and other low band. Other options to manual tuning include resistor dequeing to allow fixed. Jaeger, k4iqj multielement endfire arrays of k9ay loops, expanded version of 2011 dayton presentation, may 15, 2011, available from the author. 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.

I took this in stages by playing with the pennant loop with vactrol circuit first. Each k9ay head unit has a low noise 20db gain, high iop23 close phase matched amplifier. The k9ay array by gary breed is a great low band receive antenna for hams with limited space. The antenna s used for this transmitter must be installed and operated to provide a separation distance of at least 20 cm from all persons and must not be collocated or operating in conjunction with any other antenna or transmitter. This is the popular k9ay loop receiving antenna, as described in the september 1997. Most people, even with quite small gardens, can fit one in. The k9ay comprises of an antenna control unit and two antenna head units. Contact the editor and give us a short introduction. About how to build the k9ay loop the resource is currently listed in in 2 categories.

Here some observations regarding this upgrade, in no particular order. Like all small antennas, the k9ay loop is much less efficient than your transmitting antenna or a beverage receiving antenna. By gary breed, k9ay lowband operators are always looking for ways to improve their hearing. The k9ay terminated loopa compact, directional receiving antenna. Seems very few people have anything good to say about them. Gary breed, k9ay was fascinated by this idea and worked it out using his computer. The antenna is designed as a portable antenna, for setup during winter months. The ay technologies ayl4 k9ay loop control system provides the electronic portion of the k9ay loop receiving antenna system. There is a feeling they burnout very quickly and are less than reliable for antenna use. Wish you had enough room for an effective lowband receiving antenna. Feb 22, 2016 the sal30 is a terrific rx antenna excellent solution for limited real estate or for staying out of the woods with a beverage directionality really helps on rx i may try to combine wlow dipole for omni rx great support by the inventor and array soln. Manufactured with 6063 corrosionresistant aluminum tubing and stainless steel hardware, this antenna is very durable and. It was apparent that many stations were copying me much better than i could hear them, so something needed to be done. 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.

About build a k9ay receive antenna the resource is currently listed in in 2 categories. This antenna is originally described in the september 1997 issue of qst. 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. Finally in september of 2008, i could complete an improved design using exclusively pure dc instead of the halfwave rectified average dc as suggested by the original gary breed design. It is one in the family of antennas called terminated loops. 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 means that you can install it over any type of ground, including a buried radial system as long as its not too close to another structure. Manufactured with 6063 corrosionresistant aluminum tubing and stainless steel hardware, this antenna is very durable and attractive. Remember, in the antenna control box, there are 2 grounds. The k9ay loop keeps its directional pattern at lower frequencies, making it an excellent antenna for medium wave and low frequency dxing. A 1015 db broadband amplifier is selected by a front panel switch on the control unit. Within a few hours after deadline normally 0800 utc sundays a pdfversion is already there for. As the linear polarized antenna radiates radio waves in the. The k9ay terminated loopa compact, directional receiving antenna, qst.

Aug 30, 2010 i built the classic k9ay crossed loops at 90 degrees for fourdirection switching. Al merriman, k4glu, was the first to use this antenna for serious mediumwave dxing. Both antennas pennant and k9ay are loop antennas, combined with resistoradjustable efield contribution to the output signal. Model ayl4 4way k9ay loop system this is the popular k9ay. 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. The original article had a diagram for the transformer and switching system. In theory, the 4wire antenna of fig 14 can be used with a coaxial feeder on five.

They have good performance compared to there price, ease of use and small footprint. This link is listed in our web site directory since sunday mar 25 2007, and till today how to build the k9ay loop has been followed for a total of 8232 times. When the preamplifier is switched off, the filter is also bypassed, and the antenna may be used on any frequency. Array solutions manufactures rf power splitters and phasing systems for antennas and switching systems for antennas and radios and baluns and ununs as well as transmission line transformers and two radio contesting switching devices.

This system provides a cardioid directional pattern in four different directions. Easy to build low band receiving antennas for small and. Im interested in finding an even better antenna than the k9ay for use in both locations. Conclusions we had a lot of fun building and working with the k9ay loop antennas. In addition, the control unit consists of a direction switch 8 directions, 4 directions for the 2loop version, an omni switch to. As there is much literature on the net about this antenna, i will not publish it here, but just provide some pictures on my construction. The 160m bug bit me hard in late 2004 and after suffering through a season using a low inverted vee antenna, i vowed to have better antennas for the 20052006 season. High performance receiving antennas 10 14 db rdf 10 db. The antenna combines magnetic h and electric e field reception in order to create a directive radiation pattern.

K9ay loops wish you had enough room for an effective lowband receiving antenna. Orignal article i built one of these antennas in december 2006. Antenna matching network 16 may be used to match antenna 18 to a transmitter within rfid reader writer ic 14. Terminated loopa compact, directional receiving antenna. Martin francis ndb k9ay mast revised th july, 2004 main dx pages modifications mast version 1 balun vactrol relay box controller mast problems mast planned version 2 mast actual version 2 cable problems. Microsoft word this is how the k9ay receiving antenna works 9c. When i thought about building a k9ay loop antenna, i was thinking of a nice complement to the. Loop antenna basics and regulatory compliance for shortrange. If you wish to see my whole detailed circuit, look here pdf. Easy to build low band receiving antennas for small and large. The k9ay antennas should be positioned as for as possible from buildings, and sources of interference. This ensures that the array pattern tracks the design bandwidth. The k9ay terminated loopa compact, directional receiving. Good thing because thats exactly what they were build for.