K9ay loop Change with mouse in 60 ms. The previous portion of this story describes my attempt at building a home-brew K9AY system around a conventional Gary Breed configuration with the exception that my transformer was built to a design allegedly superior to the original. Gary Breed, K9AY, developed a receive loop system that takes up very little space. " This system provides a cardioid directional pattern in four different directions. At 160 and 80 meters, coax loss is very low, Model AYL-4 — 4-way K9AY Loop System This is the popular K9AY Loop receiving antenna, as described in the September 1997 issue of QST, “The K9AY Terminated Loop-A Compact, Directional Receiving Antenna,” by Gary Breed, K9AY. Include schematics and info on a building the control box, preamplifier and low-pass filter HF Receiving Loop Antenna The K9AY Loop systems I am making have three selectable resistances: 560, 464 and 408 ohms -- the 1500 and 2700 ohm resistors are switched in parallel with the 560 ohm resistor. K9AY LOOP SYSTEM. It is based on a system designed by Gary Breed (K9AY) published in the American ham radio magazine QST The K9AY Terminated Loop A Compact Directional Receiving Antenna By Gary Breed, K9AY (Source: QST, September 97, pp. Special note on loop location relative to transmitting antennas: All receiving antennas can deliver damaging voltages to your receiver if they pick up power from the transmitting antenna. e. Arrays of K9AY Loops: “Medium-Sized” Low Band RX Antenna Solutions (PDF) . Because of the very high QRN level reception was difficult. k9ay 160m 80m receiving loop antenna system by k7sfn. It is not only aimed at shortwave listeners, but also allows the connection of a transmit/receive antenna. A 9:1 impedance-matching transformer is connected The K9AY Loop is ideal for larger arrays, since it has already has a directive pattern. Aziloop is unique in offering two antenna modes in one product. 1. There is example for space S = 30m. Orkney Island AY1ZA (wav file) vs Inverted Vee. K9AY Loop Low bands 4 direction recieve antenna for DXing. I intended to keep my existing Pennant control device and simply add a two relay control line and a pair of switches on the front of the unit to select either of the loops and to reverse whichever one is engaged. Also, The first look recalls the K9AY diamond receiving loop, just in another (rectangular) shape. The K9AY loop, flag/pennant or EWE antennas are also commonly employed to hear weak signals by dropping the noise floor so stations pop up out of the noise. Demo Video of the loop system in the AM BC Band showing 32 dB of Front to Back! Hear a K9AY in action with S. The terminated loop (see Figure 2) is physically and electrically quite simple. The K9AY Loop is one of several published designs that use a terminated loop to get a directional pattern in a small space. There are hams who have built 4-squares of K9AY Loops and marveled at the extreme front-to-back performance. Read Al's discussion and the original QST articles for more information. Directivity of a single loop is ‘only’ 7,5 dB. It consists of a wire loop of any convenient shape K9AY – the antenna for serious MW DX-ing By Bjarne Mjelde, Norway K9AY web group, September 19, 2000. Then, take one of the wires and route it through the guide holes formed in the mast so that the loop Model AS-AYL-4 — 4-way K9AY Loop System This is the popular K9AY Loop receiving antenna, as described in the September 1997 issue of QST, “The K9AY Terminated Loop-A Compact, Directional Receiving Antenna,” by Gary Breed, K9AY. N4IQ, Bill, is South Carolina was a great source. ” To get the required 180º phasing, I modified the standard K9AY Loop switch unit so that one loop had reversed phase when either endfire direction was The K9AY is terminated loop RX antenna. 4 EWE antennae! The V-radiation pattern. When I thought about building a K9AY loop antenna, I was thinking of a nice complement to the Beverages. AYL-4 — 4-way K9AY Loop System (with adjustable termination resistance) CONTACT: Gary Breed, K9AY PO Box 43 Mount Horeb, WI 53572 USA gary@aytechnologies. 0 (Ham Radio – Computer) S21RC SSPA Controller Hardware Rev 3. To accomplish this, first pre-cut two lengths of #18 AWG wire to a length of 32 feet 5 inches. I relocated LF/MF operations out of the primary ham shack and into the workshop. K9AY Mode, where Aziloop operates as a K9AY terminated loop giving a unidirectional cardioid pattern. Model AYL-4 — 4-way K9AY Loop System This is the popular K9AY receiving loop, as described in the September 1997 issue of QST, "The K9AY Terminated Loop-A Compact, Directional Receiving Antenna. If you build a NCPL antenna, please consider sharing your design here on the SWLing Post! Considering that there are a number of ways this loop can be built, and likely even more optimizations to improve it or make its construction even easier, More info on the K9AY loop By Al Merriman hcdx list, July 10-11, 1999 Some answers to questions about K9AY Loops: Single Loop. K9AY mode, where Aziloop operates as a K9AY terminated loop giving a uni-directional cardioid pattern. Listed under the Antennas/Receiving category that is about Receiving only antennas. NEW! TPX-3 — 3-way Band Splitter (160M - 80M - 40M & up). These rely to some extent on ground conductivity to perform at their best. My best receiving antenna is now a K9AY loop built in late 2020. I have been looking for a good solution to the noise problem on receive and had heard about the K9AY loop antenna. You can easily switch between Loop mode and K9AY mode using the interface’s mouse wheel or buttons. It consists of a wire loop of any convenient shape NEW! RAS-8x2 — Receive Antenna Switching System. Array Solutions K9AY Loop Wire/Mast Kit Array Solutions 2611 North Belt Line Road Suite # 109 Sunnyvale, TX 75182 USA TEL 214-954-7140 FAX 214-954-7142 E-MAIL sales@arraysolutions. The K9AY loop is very popular due to its small size and simple construction. For this purpose i builded a K9AY , a pair of small phased amplified loops seperated 300m from each other and ofcourse switched from time to time to my regular phased rx arrays. This is a complete kit less, cabinet, power transformer, and selector switch for $48. 00. You don't have the space to put up a 4 beverage antenna's, an EWE or a 4-square and want 'good ears' on 160 and 80m? No problems try a K9AY loop antenna ! The K9AY only needs about 10m of space compare vs. ” To get the required 180º phasing, I modified the standard K9AY Loop switch unit so that one loop had reversed phase when either endfire direction was The total loop circumference is determined by the user; I sized this K9AY as 86 ft. A "ground independent " terminated loop concept was subsequently developed by Jose Mata Garriga, EA3VY and Earl Cunningham, K6SE. Another simulation for the broadside The K9AY is RX loop antenna terminated by the resistor. Aziloop offers two antenna modes in one product:. The performance in Congo was not as good as we had hoped. This may be true for the 2-loop K9AY, but the 4-loop K9AY seems to have a different signal pattern. It only requires one vertical support, typically about 25 feet high, so a tree or pole will do the job. K9AY Loop Mast and Hardware Kit. Mark Connelly once described it as "heart-shaped". The base of the supporting pole and the ground rod are located at the To build this antenna you need a lot that is at least 100 feet across. You don't have the space to put up a 4 beverage antenna's, an EWE or a 4-square and want 'good ears' on 160 and 80m? No problems try a K9AY loop antenna ! The AYL-4 is the popular K9AY Loop receiving antenna, as described in the September 1997 issue of QST, “The K9AY Terminated Loop-A Compact, Directional Receiving Antenna,” by Gary Breed, K9AY. . Broadside 2el K9AY. example is on 80 The Shared Apex Loop antenna commeters during the spring, summer, and fall when convective noise dominates. The resource has been on our site since Sunday Mar 25 2007, and it has been viewed 8905 times. The drawing provided above are of a K9AY loop On switching to the K9AY Loop, the QRN dropped to perhaps S5. Above is John Bryant’s 3D impression of a 2-loop K9AY. Hear what others have to say about us! Click here for comments from customers, user stories and links. 75 to 4. A 9:1 impedance-matching transformer connects The K9AY Loop is ideal for larger arrays, since it has already has a directive pattern. so no need to rock the boat unnecessarily by introducing a K9AY/Pennant/Flag/EWE type of antenna to the mix. Each loop is fed through an impedance transformer against ground. com. The AYL-4 consists of two units, an indoor control box and an outdoor Figure 1—A comparison of the real estate needed for four EWEs and the K9AY Loop system shows that the loops need only 1/7 the area of the EWEs, yet they provide the same directional patterns. There is example of the single loop at 160m. cz offers the possibility to optimize the reception by means of loop antennas. net list, February 12, 2000 I've had my homebrew K9AY loop up now for 2 weeks, and decided it was time to pry myself away from the radio to share my results and impressions thus far. This system provides a cardioid directional pattern in four different directions. I can make 8 selectable directions. The user supplies the necessary wire loops, mast, lead-ins, etc. The K9AY is terminated loop. The K9AY system from qro. I "home brewed" my own full size K9AY and connected the Aziloop system to it. The K9AY Terminated Loop A Compact Directional Receiving Antenna By Gary Breed, K9AY (Source: QST, September 97, pp. The antenna can be pointed Hello Roger, et al, In January of this year, I purchased one of these controllers for my remote LF / MF / HF site here in South Australia. Circuit Diagrams (PDF files): Filter/Preamp used in the AYL The K9AY is terminated loop antenna. More exciting was that while I was tuning the VFO I heard a pileup. The document provides instructions for constructing the K9AY Loop receiving antenna system, which uses two terminated loops oriented at right angles to provide directional reception. This is a receiving antennas for the low bands (160m, 80m and 40m). Antennas/K9AY; Antennas/Receiving; The title of the main category is Receiving and it deals mainly with Receiving only antennas. even a modest preamp (such as those in- eluded in most I-IF rigs) can be used. SMT K9AY board, not to scale. In Loop mode, it produces the classic small loop figure-eight bi-directional pattern at low angles, Build your own K9AY George Maroti antennas@qth. > I > did modify my PROII so the receive antenna is disconnected during transmit > and the problem went away. Resources listed under K9AY Antenna category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. · 108 antennas in one: 72 K9AY headings and 36 loop axes. Very Strong here. Loop Mode, producing the classic small loop figure-of-eight bi-directional pattern at low angles, and omni-directional pattern at higher angles. Antenna apex is at 25 feet using a fiberglass mast donated by W0RIC. Here’s my switchbox (built using 48-volt relays scavenged from the AT&T Long Lines system in the post “Resume of a Master Dumpster It has been said that the K9AY has a uniform nearly 270-degree main lobe, and a sharp, V-shaped back null. Comments on the K9AY Terminated Loop By Bill Bridges, W6FA, M/S 136-93, Caltech, Pasadena, CA 91125, e-mail w6fa@cco. ⚫ 7 dB: Unidirectional terminated small loop ⚫ flag, pennant, EWE, VE3DO ⚫ 8 dB: Close spaced arrays of two small terminated loops ⚫ K9AY Array ⚫ Shared Apex Loop Array ⚫ 8 dB: Pair of 250 to 400 foot staggered Beverages about 7 feet high ⚫ 9 dB: Two phased short verticals with 60 to 80 foot spacing K9AY Loop Arrays for Low Band Contesting Richard C. Array Solutions – Wolf RF Systems – AS-AYL-4 Directional Loop Antenna 972-203 2008 e-mail sales@arraysolutions. THE LOOP-ON-GROUND ANTENNA, or LoG. Original "relatives" include the Ewe antenna developed by Floyd Koontz, WA2WVL and Gary Breed’s K9AY Loop. A preamplifier providing this gain, along with excellent bandpass filtering for 1. K9AY Loop FAQs RF Feedback and RX front ends My radio is an IC-756PROII, driving an Alpha 76A amplifier (1500 watts > out) > and I did have feedback from the loop that distorted my transmit signal. Model AYL-4 — 4-way K9AY Loop System This is the popular K9AY Loop receiving antenna, as described in the September 1997 issue of QST, “The K9AY Terminated Loop-A Compact, Directional Receiving Antenna,” by Gary Breed, K9AY. The AYL-4 K9AY Loop System requires approximately 15 feet in four directions from the center of the antenna, plus additional distance depending on the guying method. Each loop requires 85 feet of wire and a 25-foot high support. 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. When purchased with either the AYL-2 single-loop 2-way control or AYL-4 crossed-loop 4-way control unit, the only things to be provided by the customer are the coax and control cables between the radio and the loop, plus +12 VDC from the station power supply. AY Technologies Products RAS-8x2 Other terminated antennas like the K9AY loop are limited by an intrinsic cardioid response with the associated poor front-to-side ratio and limited frequency coverage. Show the Post your loop!. K2 - 12V DC, * See Text Phasing Ground 47 VF 25 v DPDT K2 Figure 4—A photo of the central connection point at the base of a two-loop system, as installed at K9AY. I have the Array Solutions K9AY controller, and would like to try to get a half size K9AY system working, so I can try to DX on 80/40/30 this winter. 12. The green and yellow toggle switches were added for loop and direction control. The ground conditions will effect the I built the classic K9AY crossed loops at 90 degrees for four-direction switching. In a word, super! There is no question that in many cases the front to back on the loops is superior to a pair of slopers and I've not run into any situation yet where it was worse. This occurs because of the interaction between electric and magnetic field pick-up patterns. Rapidly change mode and heading with just a As the beverage was a failure, I started looking for another solution and came up with the K9AY loop, which is not too critical to build, and the concept is straight forward. Do you have any suggestions or experiences with your system which could help me, building and optimising my loop?<br /> Bert 73's,<br /> <br /> Sietse (PA4XA) Model AYL-4 4-way K9AY Loop System. The antenna fires in the direction toward the matching transformer (opposite to a Beverage and the same as the K9AY Loop). The antenna combines magnetic (H) and electric (E) field reception in order to create a directive radiation pattern. Jaeger, K4IQJ May 16, 2013. K9AY 160M / 80M Receiving Loop Antenna System . The array consists of two diamond shaped wire loops at right angles. PRE-2 — Outdoor Preamplifier for 7 dB: Unidirectional terminated small loop flag, pennant, EWE, VE3DO 8 dB: Close spaced arrays of two small terminated loops K9AY Array Shared Apex Loop Array 8 dB: Pair of 250 to 400 foot staggered Beverages about 7 feet high 9 dB: Two phased short verticals with 60 to 80 foot spacing 160m K9AY Loop (receive) This loop was built for Africa DXpeditions to Sierra Leone (9L5MS 2011) and Republic of the Congo (TN2MS 2013) and it was used in several field days in EU. 5 MHz, is included with the AYL-4 systems. 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 RTL-SDR for HF reception. Single K9AY loop. The base of the supporting pole and the ground rod are located at the center. The basic antenna dimensions are shown in the following figure. More The K9AY Loop is one of several published designs that use a terminated loop to get a directional pattern in a small space. These are the typical values that will work best on 80, compromise 80/160, and 160, respectively, using the antenna dimensions of the original QST article. The K9AY comprises of two assemblies: Antenna Control Unit, and an Antenna Head Unit. 02 — IN4001 Kl. Shorter circumferences could be used for shortwave-only performance. AYL-2 — 2-way K9AY Loop System. In K9AY mode, the Aziloop operates as a K9AY terminated loop giving a uni-directional cardioid pattern. The Wellbrook K9AY Antenna consists of two chassis mounted in substantial plastic boxes: the Operator's Unit and the Antenna Head Unit. It consists of a wire loop of any convenient shape. The K9AY Loop requires about 15 dB of gain to restore signals to levels similar to Beverage antennas. Introduction The K9AY loop is with little doubt the "hottest" DX gadget among serious DX-ers today. A 9:1 impedance-matching transformer is connected from one end of the loop to the ground and terminating resistor is connected the other end of the loop to the ground. K9AY Loop antenn för (40), 80 och 160 meterFrom Array Solutions comes this control box AS-AYL-4 for assembling a low band receiving antenna in four directions based on the famous K9AY loop concept. My Resume. Broadside 4el K9AY. Antennas/Receiving; Antennas/K9AY; The title of the main category is K9AY and it deals mainly with K9AY loop Antennas. 43-46) Abstract: Describes a directional receiving antenna for low band use which is smaller than an EWE but provides equal performance. I was also hoping that I could use it for phasing purpose against my wire antennas and that it could be a nice performer for Latin America notably. You don't have the space to put up a 4 beverage antenna's, an EWE or a 4-square and want 'good ears' on 160 and 80m? No Reviews For: Array Solutions AS-SAL-30 Shared Apex Loop Array Category: Antennas: VLF/LF/HF Receive only. pdf), Text File (. Includes relay switching box, adjustable terminations, High performance pre-amp with BCB and SW filters, as well as a mast and wire kit built to military standards, small footprint too. My current K9AY is an amalgamation of parts removed from various equipment. com this small loop of wire around the top of the Mast Section and pull both ends of the wire until they K9AY loop Antennas category is a curation of 12 web resources on , Receiving antenna for low bands, K9AY 160m 80m receiving loop antenna, K9AY Flag Pennant Ewe. For example, two K9AY Loops will have a far better directive pattern than is possible with two K9AY 80/160 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 system provides a A K9AY Loop Benefits Significant SNR improvement over TX antennas on 160 & 80 Okay on 40, useful from 300 KHz to 30MHz if you home-brew Steerable null (QRN, QRM, Local Noise) Extensive listening tests confirmed that these patterns are readily achieved with two K9AY Loop crossed pairs, constructed to be as identical as possible, and with no special “tweaking. Nulls are present not only in the back of the loop, but on the sides too. A 9:1 impedance-matching transformer is connected from one end of A simple modification is used as directional antenna with remote control: two orthogonal loops that combine E and H-field in a simple way. 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. 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 AYL-4 consists of two units, an indoor control box and an outdoor Model AS-AYL-4 — 4-way K9AY Loop System This is the popular K9AY Loop receiving antenna, as described in the September 1997 issue of QST, “The K9AY Terminated Loop-A Compact, Directional Receiving Antenna,” by Gary Breed, K9AY. The AYL-4 consists of two units, an indoor control box and an outdoor A K9AY loop accompanied Al to Newfoundland on the very successful 1998 DXpedition. It is a resonant tuned loop that is inductively coupled to the ferrite rod aerial of Now, prepare the loop wires for loop 1 and loop 2. From this, I ordered 6 boards from PCB Express: K9AY PCB. 0 (Ham Radio – Computer) SSPA Controller V2. When your damaged or defective loop needs to be replaced, this is the loop only part to This is true even in the K9AY Loop and Pennant antennas, which have sloped conductors. K9AY loop antenna installed at PA6Z Contest group. · Switchable 18 dB preamp and a 4-step attenuator (0 - 18 dB) for up to 36 dB of level control. The K9AY is terminated loop RX antenna. AS-AYL-4. IDDUCDK9 - Free download as PDF File (. 30 December 2011 : Worked VK3IO today 10,200 miles. With the AYL-M kit, 21 feet Model AYL-4 4-way K9AY Loop System. I run tall monopoles for transmit and receive however; they are inherently noisy. Beverages: How Short Can They Be? How to Get the Most from Attenuators and Preamps. K9AY Loop May Be the Answer. The AY Technologies AYL-4 K9AY Loop Control system provides the electronic portion of the K9AY Loop receiving antenna system. While browsing my paper archives, I found two folded, together stapled paper sheets with almost unreadable pictures of a control box for the K9AY loop receiving antenna * (a note see below) and a preamp with filtered input which was unreadable at all, however the schematic recalls the already published K9AY design using the 2N5109 CATV transistor. The drawings I've provided are of a K9AY loop tested at sites in k9ay loop switch and preamp Description: Two board set consist of a loop antenna switch and switch impedance load board and a bandpass filter/preamp board. > de Paul, W8AEF The preamp in the AYL-4 is basically a one watt The K9AY terminated loop Published on 29. It consists of a wire loop of any convenient shape K9AY Loop. It is switchable Building antennas is always a blast!Acknowledgements:Credits to K9AY for his design of the base loop. Basic K9AY Loop • 85’ Triangular Loop • 25’ High, 30’ Wide • Resistive Termination • Directional Antenna - Easily switched in 2 directions - 4 directions with an orthogonal pair of loops • 9:1 Matching Transformer to Coax Gary Breed, “The K9AY terminated loop – A compact, directional K9AY loop antenna for 160 and 80m bands. Application description K9AY. I can’t remember where I Gary Breed, K9AY, developed a receive loop system that takes up very little space. This is ONE direction antenna. 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. Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC Bands This antenna works as a Full Wave Loop on 80 Meters and also works as a 2 I don't have a separate receive antenna (although I'd like to try a K9AY loop) but have had no problem hearing a lot of DX stations and working them with this antenna and competing in pilups, too, using an Ameritron AL-80B amplifier with a single 3-500ZG in the final. It is a relatively small receiving loop that works well from 10 Mhz and down. com 1 Array Solutions Model AS-AYL-4 — 4-way K9AY Loop System This is the popular K9AY Loop receiving antenna, as described in the September 1997 issue of QST, “The K9AY Terminated Loop-A Compact, Directional Receiving Today, I heard XU7ACY weak in the noise again, but that was more encouraging. This system provides a cardioid directional pattern in four different directions. 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. x; S21RC LDMOS SSPA Controller V2. If you read Joe Buch's original article, he describes that the K9AY loop is effectively working as both a loop and ground plane vertical whip, and the key to obtaining a null is to be able to have the "vertical whip" voltage cancel the "loop" voltage. 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. It belongs to the family of the small loops, The K9AY loop antenna can provide a cardioid (heart-shaped, single-null) pattern when one end of the antenna is connected to ground through a variable DC resistance. My Experience with Beverages on 40 Meters . Wellbrook's comercial K9AY system By Dave Kenny, British DX Club Communication, September 1999 Back in November 1998, Andy Ikin of Wellbrook Communications very kindly loaned me a pre-production model of a K9AY antenna system by Wellbrook Communications. com The K9AY Loop is ideal for larger arrays, since it has already has a directive pattern. The unique feature of the K9AY is the constant high front to back ratio over a very large bandwidth. I worked VK3ZL over 10,000 miles. loops. Build your own K9AY George Maroti antennas@qth. The first installation at VE3CSK has the bottom wire 18″ above ground which is moist clay loam. A 9:1 impedance-matching transformer is connected The K9AY Loop is one of several published designs that use a terminated loop to get a directional pattern in a small space. A 9:1 impedance-matching transformer is connected from one end of the loop to the ground and a terminating resistor is connected the other end of the loop to the ground. I'm interested in finding an even better antenna than the K9AY for use in both locations. If you don't want to make the loop using 'homebrew' construction, we also offer the AYL-M kit that includes a mast, wire and all the hardware needed to construct the antenna. How to Build the K9AY Loop Receiving Antenna (HTML). Features Summary. Noble Radio RXLP-1 Broadband Active Receive Loop WellBrook ALA100LN-M Medium Aperture Loop (RX) Array Solutions AS-SAL-20 Shared Apex Loop Array Vertical-Array RX ultra Loop AEG 160/80/40 DX Engineering ARAV-4P Active Receive Verticals, 4 Pack K9AY AYL-4 Receiving Loop System Pixel Technologies Active Magnetic Loop Antenna PRO 1B Two K9AY loop system is super By Al Merriman - K4GLU July 4, 1998 The two loop system is up and running. The AYL-4 is the popular K9AY Loop receiving antenna, as described in the September 1997 issue of QST, “The K9AY Terminated Loop-A Compact, Directional Receiving Antenna,” by Gary Breed, K9AY. txt) or read online for free. Figure 1—A comparison of the real estate needed for four EWEs and the K9AY Loop system shows that the loops need only 1/7 the area of the EWEs, yet they provide the same directional patterns. Here are the instructions for constructing the loop itself. Microsoft Word - This is how the K9AY receiving antenna works 9c. How to Build the K9AY Loop Receiving Antenna (PDF). AYL-4 — 4-way K9AY Loop System (the original design!). edu • I enjoyed the article on the crossed terminated loop array by Gary Breed, The K9AY loop is meticulously built, and works very well. F/B test on 160m band, the antenna is located 150m away from the house and about 60m from my TX antenna. I have no room for beverages (in fact several honest suppliers like K1FZ and N0TT told me don't bother and directed me to this loop), so this was my only choice for a real receiving antenna with some theory behind it. INTRODUCTION • K4IQJ Interests /Background • Introduction • RDF Definition • Basic K9AY Loop Pair • K9AY Array Comparisons • 2-3-4 Element Arrays • 4 Element Array Design & Simulation • Array Implementation • Discussion / Observations Dayton 2013 Dayton 2013 Dual Mode – Loop and K9AY. The K9AY loop antenna for 160 and 80m bands . 2004 (6799 x viewed) - a compact, directional receiving antenna . It is switchable If you’d like to see and hear how this antenna performed on its first outing, check out this post. I talked to with several hams about their experiences with the K9AY. Idea of making the K9AY four directional is abundant in the internet, using two Resource Details You will find this resource in 2 categories on our links directory. to create the complete classic "Christmas tree-shaped" K9AY antenna. The first look recalls the K9AY diamond receiving loop, just in another (rectangular) shape. More gain over good ground (solid Model AYL-4 4-way K9AY Loop System. Very Very Strong Same level on both this coax loop and the K9AY Loop. The other end of the loop is grounded through a resistor in the 500-800 ohm range. I started DXing when I was a young boy, around 7/8 years old when I first started to get interested in those funny squeaks, I've operated a four-loop K9AY antenna for two years now, both in my winter home in Oklahoma and at my summer cottage on Orcas Island north of Seattle. My Shack. The K9AY loop antenna for 160 and 80m bands. Andy Ikin of Wellbrook Communications in the UK has also done thorough tests on this antenna type. It is important that each loop be constructed so that each has an identical length and shape. It attenuates unwanted DXE-PRO-LOOP is the Replacement RF PRO 1B Loop that is ordered by customers who have all other components of their system working. Four Directional Loop System . Again, a really great roundup for information about low-band receive antennas has been published by TopBandHams. The resource has been on our site since Friday Jul 6 Resource Details You will find this resource in 2 categories on our links directory. I worked him, in spite of the competition from the EU "big guns" 5 5 9 both ways. Broadside array reduces azimuth antenna pattern. Loop mode, producing the classic small loop Low Band DX Contests Can now hear well on 160/80 M Operation far less difficult / tiring on the low bands 2 EL K9AY Loop Array with Half Size Loops Worked fine on 80M Marginal output on 160M Recent NAQP CW Much grumbling after the contest regarding qrn problems on 80/160 I really had little trouble hearing on 80 or 160 Biggest problem was Last Updated September 4, 2024 AY Technologies LLC E-mail: gary@aytechnologies. Credits to KK5JY for his LOG balun which I used for thi to Loop 2 Insulators Relay Box Feed Line LOOP I NE Loop 2 NW DI. x LITE; S21RC Digital Interface Rev 2. The sloped conductor behaves as a vertical (think about this when people follow the mistaken advice that sloping the last few feet of a Beverage Figure 1—A comparison of the real estate needed for four EWEs and the K9AY Loop system shows that the loops need only 1/7 the area of the EWEs, yet they provide the same directional patterns. How to Make a Great 9:1 RX Transformer. The transmitting antenna is a Marconi T with 90 feet vertical and 3 x 100 foot K9AY Receive loop antenna; 5 Band LPF for HF Amplifier (up to 200W) Homebrew 3 elements 10m Yagi antenna; S21RC Digital Interface Rev 3. The K9AY is specifically designed to simplify the construction of this Loop antenna. The K9AY loop is with little doubt the "hottest" DX gadget among serious DXers today. doc Author: Admin Created Date: 1/24/2018 10:19:10 PM Gary Breed, K9AY. caltech. This is the board with all passive components installed: K9AY loop antenna control board partial. All listening was conducted in Mount Kisco, NY, 40 miles north of New York City on a Drake R8B. com 1 Array Solutions Model AS-AYL-4 — 4-way K9AY Loop System This is the popular K9AY Loop receiving antenna, as described in the September 1997 issue of QST, “The K9AY Terminated Loop-A Compact, Directional Receiving Basic K9AY Loop • 85’ Triangular Loop • 25’ High, 30’ Wide • Resistive Termination • Directional Antenna - Easily switched in 2 directions - 4 directions with an orthogonal pair of loops • 9:1 Matching Transformer to Coax Gary Breed, “The K9AY terminated loop – A compact, directiona l Drawing of K9AY antenna from original work by Gary Breed K9AY 6) Ferrite Sleeve Loop (FSL) This was first described by Graham Maynard in 2011 and has undergone much development since then. This is the board completed: K9AY antenna control board completed. PRE-1 — Outdoor Preamplifier for 160/80M (1. K9AY Loop FAQs (Frequently Asked Questions) Extensive listening tests confirmed that these patterns are readily achieved with two K9AY Loop crossed pairs, constructed to be as identical as possible, and with no special “tweaking. For example, two K9AY Loops will have a far better directive pattern than is possible with two omnidirectional verticals. Wolf RF Systems The K9AY Receiving Loop James Wolf, KR9U 2415 Union Chapel Rd Fort Wayne, IN 46845 kr9u@wolfrfsystems. 5 MHz). The full document is available here in PDF format. The relay control box switches the The K9AY control. 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 AYL-4 model. 0 The influence of the electric component (the so called "antenna effect" when the loop receives like a whip antenna) should be kept low because it fills up the null and it can be kept low by shielding the loop, by a symmetrical design (canceling out the unwanted signal) and by small structures (i. 8-4. Foreward . Impedance matching transformer is connected from one end of the loop to the ground and load resistor is The K9AY control. With the null pointing at EU, FR/F6KDF/T is now readable. Technical Articles by K9AY: How to Build the K9AY Loop Receiving Antenna. If you only wish to cover one or two directions a single loop will work just fine. smaller loops are smaller whip antennas and the ideal loop is zero K9AY is a loop developed in the early 1990's by American radio amateur Gary Breed (K9AY). Standard install with 8 foot ground rods and wood dowels 15 feet on each side of apex. Switch between Loop mode and K9AY mode with mouse wheel or buttons. K9AY LOOP at VE1RGB- UPDATE . AYL-M — Mast, Wire, Guy and Hardware Kit for K9AY Loops. Describe your experience with the K9AY loop antenna kit and tell us why you give it the rating you did (required). K9AY AS-AYL-4. The Wellbrook K9AY antenna I purchased incorporates a low-noise 15-dB preamp; a version without the preamp is also available. I'm not a contester, but I The AYL-4 K9AY Loop System requires approximately 15 feet in four directions from the center of the antenna, plus additional distance depending on the guying method. There is no directional switching relay. by Gary Breed, K9AY first published in QST (ARRL), Newington, Sep 1997; Wish you had enough room for an K9AY is a loop developed in the early 1990's by American radio amateur Gary Breed (K9AY).
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