K0UO RHOMBIC ANTENNA FARM
The Mighty Rhombic is the "KING of Wire Antennas".
This is Scientific Technical Engineering, & Mathematics (STEM), Blog Site for the K0UO Antenna University, The Lost Art of Rhombics Arrays
The blog site has design, modeling, and construction information for building large HF Rhombic arrays, V-Beams wire arrays, HRS Curtain arrays, Long wire, baluns, LPDA Log yagi, Feed-lines, Beverage receive antennas, BOG, Traveling Wave antennas, Delta loop multi element beams, Diversity transmit HF radio, lightning protection, & antenna vibration dampening. Info on Icom Diversity receive for the IC7610 & IC7760, along with overviews on VOA, W6AM, and W7YRV sites. Blog topics about the K0UO Rhombic farm and antenna test range, 4KS Walz Airport at Kiowa, KS.
Steven Walz, known as K0UO which is his amateur ham radio station call, has an antenna testing range site known as "Antenna University". The Rhombic Antenna Farm & RSI Test Range, which has the use the 4KS airport, for far field measurements, using portable towers and large drones, loaded with calibrated RF survey instruments for Commercial, Amateur Radio, STEM, DOD, school or University Research. Decades of building huge arrays, teaching, and performing RF surveys.
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The ARRL, RSGB, Switzerland, and so many other amateur radio organizations use the Diamond Logo, which looks like a Rhombic antenna. "K0UO has, Miles of WIRE, in the AIR, and ON the AIR daily"
Steve Walz known as K0UO (his FCC Amateur radio call), is working on the "Lost Art of Rhombics" with four of these large wire antennas, at 100 to 160 foot high, and three 1200 foot V-Beams (VEE) antennas at the Kiowa, Kansas QTH. Which are beaming to fourteen DX areas, with phasing for more steering. There is also information on large distributed fed curtains arrays, LPDA, and beverage receive antennas. K0UO is home of the Re-entrant Rhombic, which is 90% efficient by re-phasing the power instead of heating up termination resistors. The Rohn R20, 25, 35, 45, 55, 65G, Rigid Tube Tower Series 26KD Tower, the J Tower, and the C Tower are reviewed.
I have contacted 200 countries on 160 meters, and it wouldn't have been possible without the beverage antennas.
The K0UO antenna farm is proudly using parts from many legendary stations, to continues the tradition they started with the big arrays, like the VOR (Voice of America), Armed Forces Radio, W6AM Don Wallace, BBC, Art Bell W6OBB Big Loop, W7YRV Roy Callison, and others. So symbolically those large historic stations are still, "On the Air Daily" by K0UO using an extensive array of towers and antennas. Also read about the K0UO Remote ham station. K0UO/R @ https://www.qrz.com/db/K0UO/R
See my call on QRZ, https://www.qrz.com/db/K0UO, or type in my call K0UO for more information and photos. Each Rhombic antenna uses 1000s of feet of 3/8" cable for the array wire, covering many acres each. They are erected on numerous towers and 100 foot wooden utility poles, also the site has three large V-Beam antennas which are over 1200 foot long each. Miles of wire in the air and on the air, spread out over many acres. "Build Them and the DX will Come"!
The K0UO Rhombic site is the largest and highest gain wire antennas array farm, currently still in use anywhere in the world.
The KØUO Rhombic Antenna Farm in Kansas, consist of many acres, with "Miles of Wire in the Air & On the Air".
A HF Rhombic antenna is an excellent choice for commercial, maritime shore stations, military, broadcasting, frequency agile, requirements, high speed traders, diplomatic, EME, and big gun contest ham amateur radio stations.
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The K0UO and RSI Corp. - Radiofrequency Safety International antenna test range site makes use of the 4KS Walz airport near Kiowa, KS and its surrounding area as a practical learning environment for STEM (Scientific, Technical, Engineering, & Mathematics) antenna projects in a real-world outdoor setting. If your group has a School or University aerospace or antenna research STEM program, please let me know. We are using AI, which is now becoming an advanced tool in analyzing, developing, and expanding research in Environmental, RF, and antennas. Efficiency, Flexibility, Reliability at K0UO "Antenna University". Note, this K0UO blog uses dB gain, not dBi when providing antenna gain data, don't be fooled by dbi!
Amateur Radio calls, K0UO and V31KW
https://www.linkedin.com/in/brig-general-steve-walz-698279219
SEE, THE COMPLETE BLOG NOW @
SEE Steve's RF Testing Team overview, Founder of RSI Corp, https://en.wikipedia.org/wiki/RSI_Corporation . Since the 1990s, RSI Corp, located in Barber County, Kiowa, KS, has provided expert Environmental Health and Safety (EH&S) services to some of the largest hyperscale AI data centers, and NOCs. Their clients include Verizon, AT&T, T-Mobile, Department of Defense, Google, UPS, and FedEx. RSI Corp supports these critical infrastructures through thorough EH&S surveys, tailored programs, inspections, and training, helping clients maintain compliance and safety in demanding environments. FCC-registered towers up to 195 feet and is also a FAA-registered facility
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Owner/Operator: Steve Walz, call sign K0UO
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For operators around the world, hearing “K0UO” on the bands is more than a contact. It’s a reminder that the spirit of experimentation, engineering excellence, and global connection is alive and well.
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Also see Antenna University at https://6989df74ecaac.site123.me/
Antennas.....before Amplification
Welcome to K0UO's premier ham radio antenna site farm, spanning many acres dedicated to innovative design and rigorous testing of antennas. So join me in advancing the field of ham antennas radio with cutting-edge technology and expert guidance. This station has been very competitive, and has won many major worldwide amateur radio contest.
Remote operation users
Note to contest operators, DXers, and others who have made arrangements to utilize the K0UO facility: you must first sign a non-disclosure agreement and adhere to the terms prohibiting the disclosure of the "exact location" of the K0UO site you are using. Currently, the site hosts several commercial DOD/DOW projects utilizing specific HF high-gain antennas. These projects take precedence, and you will be informed if an antenna is unavailable at certain times. There are no exceptions to this rule, as agreed upon in the original agreement, which states that certain antennas are not guaranteed and may change without notice. This is in accordance with the Department of Defense utilization clause of the site (30 days on most current agreements).
The owner of the K0UO location receives hundreds of inquiries annually regarding remote use of the station for DX, casual amateur radio use, or extensive contests, including multi-multi operations. K0UO aims to be inclusive, but due to the limited number of operators that can access the facility simultaneously, a standard protocol is necessary. If you or your group have successfully negotiated an agreement, you must comply with the non-disclosure agreement. While many contests require station location disclosure, stating that the station is in Grid Square EM07, Barber County, Kansas, does not violate the agreement; only revealing the exact location or station owner/call would constitute a breach. If approved, please enjoy the station responsibly.
The facility houses tens of thousands of dollars in new Flex 8000 transceivers, amplifiers, sophisticated control and switching equipment, some of which are AI-operated, in addition to massive HF antennas such as Rhombic, V beams, Delta Loop quad-beams, four-square verticals, stacked log periodic LPDA, wire beams dipole stacked on a 195 ft tower, and a complete array of receive antennas from Beverages to loops.
The agreement that you or your group has signed is confidential, and you are prohibited from disclosing it to others. This confidentiality clause is a critical component of the agreement, ensuring that sensitive information and specific terms remain protected from unauthorized access or sharing. Each agreement is meticulously tailored to meet the specific requirements of both you and the owner, reflecting the unique circumstances and needs of the parties involved. This customization process involves careful consideration of various factors, including the nature of the relationship, the objectives of the agreement, and the particular provisions that are most relevant to the situation at hand. By adhering to these guidelines, both parties can foster a trustworthy environment that promotes open communication while safeguarding their interests. It is essential to understand that breaching this confidentiality can lead to significant legal repercussions, including potential damages and the loss of trust between the parties. Therefore, it is in your best interest to respect the terms of the agreement and uphold its confidentiality at all times.
High-Frequency Stock Trading groups should use the rhombic antenna.
RSI Corp in Barber Country KS works with Hyperscale AI Data and Network operation Centers developing Environmental Health and Safety EH&S surveys and programs.
The Defense Technical Information Center is RSI's central facility for the collection and dissemination of scientific and technical training information.
RSI Corp in Kiowa, Kansas, specialize in performing these surveys to ensure safety and compliance.
, RSI has surveyed some of the largest Network Operations Centers (NOC) and AI Data centers for groups like Verzion, T-Mobil, DOD, UPS, FedEx, and AT&T over the years.
Radiofrequency Safety International's Technical group has performed technical, safety, RF EME and general hazard inspection assessments at thousands of sites throughout the country, including many AI data center, MOC, major broadcast sites, tower antenna farms, major buildings, and DOD installations.
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Analysis: Comparing measurements against regulatory limits set by agencies like the EPA, FCC, FAA or OSHA.
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Hazardous communications analysis
Steve Walz has sat on numerous boards and committees and is nationally recognized as one of the leading authorities on electromagnetic energy exposure issues, and has trained tens of thousands of people. He has surveyed thousands of sites using the methods he authored in Superior Survey Techniques, which is the industry standard for OSHA, FCC and EPA EH&S surveys. He has written safety plans for virtually every type of organization.
RSI supplies training and assessment services to the United States and other governments. Since the 1990s, RSI Corp, located in Barber County, Kiowa, KS, has provided expert Environmental Health and Safety (EH&S) services to some of the largest data centers and NOCs. Their clients include Verizon, AT&T, T-Mobile, the Department of Defense, Google, UPS, and FedEx. This post explores how RSI Corp supports these critical infrastructures through thorough EH&S surveys, tailored programs, inspections, and training, helping clients maintain compliance and safety in demanding environments.
Welcome to the K0UO Ham Radio Station, home the world's largest antenna site and test range, spanning impressive 1,200 acres. Featuring miles of antennas and towering structures—including FCC-registered towers up to 195 feet and is also a FAA-registered facility (4KS)—our facility is a dream destination for serious contester and big gun operators. "I hope others will carry on the tradition, and art of the large Rhombic Arrays in the future".
Also K0UO has a blog page about his large 40-meter wire Delta Loop multi element beam. The site has numerous 100 foot wooden power-line poles, concrete silos, and portable mobile towers, the K0UO Rhombic Farm stands out for its significant height and capabilities. Registered under Antenna Structure Registration number 1216715, our station is recognized in the FCC public file, credibility and verification that sets us apart from other so-called big gun ham stations. The station and antenna farm uses very complex highly engineered arrays.
The K0UO station is designed for maximum gain and directivity, utilizing high-performance, large-aperture antennas that require significant space, high gain, height, and great engineering.
k0uo uses Re-entrant Rhombic array is one of the highest forward gain HF antennas with its 90% efficiency, the highest forward gain of any HF ham antenna. Also a world-class multiple stations, with many large LPDA yagi type beam antennas, 195 to 300 foot towers, and multiple very large wood power-poles. Antennas from 160 meters up to 2 meters. Using the new Icom IC7760 as the main transceivers.
K0UO has years of expertise in contesting, DXing, using cutting-edge engineering and technology.
K0UO uses many very high-gain directional LPDA-Yagis beamed at all continents, large 160 -40 meters four square verticals, stacked systems of rhombics, a model director current coupling of a 40 meter Delta multi element loop beam for ham radioV-beams, and curtain arrays, The achieved goal has been met to have a world class station with multiple antennas combined (stacked) for increased gain and better performance on all the amateur bands, that are optimized for maximum gain. All utilizing optimum take off angles.
With 1200 acres near by to test and build all types of antennas and tower pole supports, also the largest ham radio station in the world with miles of wire arrays and many towers, Antenna Test Facility ATF, electromagnetically-quiet areal—K0UO is Largest by measured tower height/count, antenna quantity/gain, land used for arrays, (since OH8X in Finland, tall tower and 160 meters beam in Finland was destroyed by a storm in 2013).
Miles of antennas for ham radio
dozens of tall antenna support structures, like FCC registered towers up to 195, to 300 foot on a near by Gypsum hills site, numerous 100 foot wood power-line poles, concrete silos, and portable mobile towers. K0UO near Kiowa, KS has High-Performance Antennas: Using large stacked LPDA-Yagi beams, Rhombics, Curtain arrays, Four-square phased verticals on specific bands, optimized for low noise and very efficient and high gain K0UO Rhombic antenna farm which is the highest forward gain array and largest area on 1200 acres in use by any amateur ham station DX, remote, or contest station in current use any where in the world
Modern alternatives still can't beat the big HF Rhombic:
Using K0UO +90% re-entrant re-phasing system no power is lost by terminating resistors.
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Yagis even stacked ones,( 4 over 4 over 4 at 200 feet have about the same gain)
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Log-periodic antennas
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Vertical phase arrays, 4 Sqs
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Wire antennas with tuners
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Phased dipoles
The K0UO Rhombic farm and antenna test range is one of the very few ham radio stations that has a tower which is tall enough and required by the FCC to have a registration. FCC-registered towers up to 195 feet and is also a FAA-registered facility 4KS. The Antenna Structure Registration or ASR tower number is 1216715. So the K0UO site, station, and antenna is in the FCC public file. used in conjunction with RSI Corp of Kiowa KS seehttps://www.rsicorp.com/dtic. Use for DOD and commercial wireless telecommunications groups.
RSI Corp is a Professional, Scientific, and Technical Services company that can Handle technical management, RF testing logistics, and integration of measurement instrumentation in collaboration with the facility. The K0UO antenna test range site is a highly technical facility used to precisely measure an antenna's performance characteristics, such as its radiation pattern and gain. The K0UO and RSI test and measurement facilities feature state-of-the-art equipment/software in RF performance, supported by continuous in-house calibrations. Mechanical positioners are designed to precisely orient antennas. K0UO is using AI, making it one of the largest and most sophisticated amateur radio stations in the world
Antenna University
https://6989df74ecaac.site123.me/
The K0UO antenna test range site has significant outdoor real estate, and over 2500 feet by the 4KS Walz airport, so anechoic test chambers are not needed. and testing site has the use of over a thousand acres around the main antennas for far field measurements. the K0UO Electromagnetic Test and Evaluation Facility is a multi-purpose, wideband, antenna test facility.
The RSI Superior Survey Techniques™ RF training course, by Steven Walz is a University based program developed over a quarter of a century ago by RSI
RSI Corp: Superior Survey Techniques
And is now taught at the K0UO RSI antenna outdoor antenna test range site near Kiowa, KS and is a controlled testing environment used to measure and evaluate the performance of antennas.
What exactly does RSI do? Steve Walz says, “RSI is the leader in the field of radiofrequency emissions safety and unique general safety challenges, especially related to electrical systems, cooling, and electromagnetic emissions. EH&S safety surveys, including Hazardous communications analysis, EPA OSHA, EME and general safety assessments, ”RSI Corp. - Radiofrequency Safety International
This is where Environmental Health & Safety (EH&S) surveys, including Electromagnetic Emissions (EME) and Radio Frequency (RF), Hazardous chemicals assessments, become critical. s like RSI Corp in Kiowa, Kansas, specialize in performing these surveys to ensure safety and compliance, RSI has surveyed some of the largest Network Operations Centers (NOC) and AI centers for groups like Verzion, T-Mobil, and AT&T over the years.
Radiofrequency Safety International's Technical group has performed technical, safety, RF EME and general hazard inspection assessments at thousands of sites throughout the country, including many major broadcast sites, tower antenna farms, major buildings, and DOD installations. Radiofrequency Safety International and Steve Walz is using AI which is now becoming an advanced tool in analyzing, developing, and expanding research.
Also there is a blog about the Cessna Skymaster 0-2 Prototype, C336, C337, C337 Pressurized, O-2 A, O-2B Military FAC plane, Navy O-2, Rhodesian FA337, Cessna Skymaster C337, O-2 & C336 Brothers to the Rescue, AirScan now A2G modified fleet on C337 Cessna Skymaster with IO550 engines, Miss Belize Cessna Skymaster O2 aircraft, C327, Nicknamed the Oscar Deuce and by the military,
In 1965, the USAF at Eglin AFB, FL, modified a 336 with four sets of hard points on the wings, marker smoke system and had a one time STC approved by the FAA. The serial number on that plane is 336-0026.
Brig General Steven Walz, Overview: Trying to be retired: Civil Air Patrol (CAP), 35 year member of MARS Military Auxiliary Radio System serving in both U.S. ARMY and later the U.S. Air Force program, Security Clearance, Founder of RSI Corp, Borderline Economic Development, RSI Wind, RSI Two-way radio (Kenwood & Icom), Borderline Electric, KPAK FM, Walz Farms, proudly serves on a number of Boards over the years, Technical advisor for Concrete Walz Fencing, Published in various trade journals and author of a number of white papers. FCC Commercial License Examiner from ETA, Life ARRL member, ARRL Volunteer Consulting Engineer for the Midwest Division, ARRL Emergency Coordinator, ARRL Technical Specialist, American Legion Amateur Radio Club, Armed Forces Communications and Electronics Association, Radio Society of Great Britain, Society of Broadcast Engineers, Federal Emergency Management Agency’s (FEMA) Emergency Management Institute contract instructor, The Radio Club of America, Association of Former Intelligence Officers, American Society of Safety Professionals, Life member Central States VHF Society, Royal Order of Wouff Hong, The Rag Chewers' Club, a founding member of the Great Salt Plains Amateur Radio Club, past Director for the Kansas Oklahoma Repeater Link System
The KØUO Rhombic Antenna Farm in Kansas, consisting of many acres, with "Miles of Wire in the Air & On the Air". K0UO Steve Walz is a highly experienced amateur radio operator, best known as an antenna Experimenter, Contester, Ragchewer 1st and DXer for fun! "It takes years of Passion, Hard work, and Commitment to build a great station "super mega" which includes an extensive antenna farm (details on specific arrays are highlighted in various ham community discussions as among the most impressive for DX and remote contesting, running a multi/multi station
The #1 Amateur “Super Ham HF Station” & Rhombic farm K0UO supports ARDC, Amateur Radio Digital Communications Community
Governor of Minnesota Tim Walz, is a distance cousin (Nebraska and Germany) to a RSI Corp CEO Miranda Walz Allen who run for U.S. Congress in the 4th district of Kansas in 2016 and "Brigadier General Steve Walz" of Kiowa, Kansasan actual photo view of the install of one the one of the forty, 8000lb +100 foot wood poles in use at the Steve Walz K0UO largest ham radio station and antenna farm in the worlds with over 1200 acres of antennas and towersoptimized antenna farm having one of the most comprehensive and effective multi-transmitter stations, featuring a high density of towers and antennas.
stations are designed to maximize signal strength and reach, often using massive, towers and vast, antenna farms to dominate in international competitions and long-distance communications.
The rhombic and curtain arrays have extensive, high-gain antenna arrays that provide massive signal power. Used by International recognized top contesters and DXers as their remote site. Using the many high-performance antennas which are optimized for contesting and DX, this remote station is becoming Mini contesters and dxers Secret station which a utilize not only for transmitting but pulling after week ones with the up to eight 1500 ft 2-wire beverage receive antennas. k0uo is a
"mega HF site and station" with massive views of the Red Gypsum Hills and low takeoff angles completely covering the globe with antennas 25° wide over 16 DB each aiming at 14 selected directions enabling complete World dominance coverage on High Frequency Communications 160 to 6 meters. Utilizing over 50 antenna support structures up to 320 ft High, all on the huge Ranch Walz Farms and 4KS airport
Frequently asked questions
How to get to All the BLOGS FASTER?
A:
To get directly to the blog pages, and skip all the writeups on the main pages, over go to this page below, where there is only one shorter cover page, then just go right down to the full list of all the blogs. This really helps if you using a cell phone for viewing the blog.https://www.k0uo.com/k0uo
What types of antennas does K0UO Steve Walz specialize in for amateur & Commercial/DOD test range site
He specializes in a wide range of advanced antennas suitable for both broadcasting and amateur ham radio enthusiasts. Which include Rhombic antennas, V Beams, HRS “Billboard” Arrays, USIA or Distribution fed HRS Curtains, Delta Loop beams, (4) Foursquare verticals, Beverage receive antennas, and Log-Periodic Dipole Arrays (LPDA). These high-performance antennas are crucial for reliable long-distance communication. Also info on Rohn "G" 25-65 & Export 26KD, J, K towers and antenna Vibration Dampers, Lightning protection, W6AM, Voice of America (VOA), BBC, Art Bell, and the American Radio Relay League (ARRL), our antennas meet the high standards required by both professional broadcasters and dedicated amateur radio operators. Whether for large-scale broadcasts or enhancing your ham radio setup, our antennas deliver the quality and efficiency you need. The RSI Corp antenna test range is on site with the K0UO Rhombic Farm and 4KS airport home of the Skymasters.
See the Blogs, Just Skip the header and go to the Blogs
And so many more see the site for a complete list
Also see
What is best receive (RX) antenna for the lower HF bands, 160- 20 meters?
The Beverage antenna serves as a versatile tool in the realm of radio communications, offering both bi-directional and directional capabilities depending on its termination. Its unique properties make it an invaluable asset for amateur and other radio enthusiasts, professional operators, and researchers alike, enabling them to capture a wide array of signals with clarity and precision. K0UO has up to eight two wire beverages, many are 1500 foot long.
Major Advantage, all long Traveling wave antennas are known for fantastic Improvements in the reduction of signal fading, which is called QSB by amateur radio operators, for both transmit or receive.
TIP: It is a Blog, so just SKIP the Blogs HEADER and go right down to the blog.
Does K0UO really have big HF antennas?
Yes,
The K0UO Rhombic Farm has miles of wire arrays and feed-lines, beams and delta loops high in the air and in use daily,
The station is distinguished by its use of AI, real time data, diversity receive and transmit, while others use the K0UO station by full remote for contest and DX.
see at the links below, just skip the header page and go to the blogs
The K0UO Multi-Multi Super station dense sprawling extensive antenna arrays on a large number of acres with a number of towers and antenna structures, with extensive hardware multi radios and amplifiers using the latest and advanced software with integrated Hardware using the latest artificial intelligence as part of the legendary operating setup.
Where can I find parts for rhombic and V Beam antennas?
Just Skip the header and go to the Blog
SEE: https://www.k0uo.com/post/voa-100-000-watt-balun
https://www.k0uo.com/post/termination-resistors
Does Steve Walz, K0UO use AI at his station
Yes, both at his station and the RSI Corp antenna testing range
See the Blogs, Just Skip the header and go to the Blogs
The Multi-Multi Super station dense sprawling extensive antenna arrays with use of a large farm with dozens of towers and antenna structures, with extensive hardware multi radios and amplifiers using the latest and advanced software with integrated Hardware using the latest artificial intelligence as part of the legendary operating setup.
K0UO is using a Rhombic Array, so what is it?
A:
THE ARRL and RSGB Diamond Logo, looks like a Rhombic Antenna, the "PHD" of HF wire antennas. Each array spans 7 acres and most mounted on 100 foot tall poles. The half rhombic is at 155 feet.
The Rhombic is the antenna that won WW2 for the Western Allies
See the Blogs, Just Skip the header and go to the Blogs
Q: Why is K0UO considered different from other Mega Big Gun Stations featured at General Steven E. Walz?
A: K0UO stands out from other Mega Big Gun Stations primarily due to its unique integration of advanced antenna technologies and expansive site layout, which aligns with the standards showcased at General Steven E. Walz. Unlike typical large-scale ham radio stations, K0UO employs specialized configurations such as Rhombic antennas, V beams, VOA Curtains, Delta loop Beams and LPDA arrays across an extensive number of acres for the site. This combination results in superior directional control, gain, and bandwidth, maximizing amateur radio capabilities. Additionally, K0UO’s design emphasizes strategic tower placements and innovative antenna arrangements, setting a benchmark in the world’s largest ham antenna installations. This technical sophistication using real time data with AI for control, coupled with its association with respected stations, ensures K0UO delivers exceptional performance and reliability uncommon among other Mega Big Gun Stations.
The K0UO station is distinguished by its expansive site covering hundreds of acres, hosting some of the world’s largest and most advanced amateur ham radio antennas.
This station uses AI, real time data, diversity receive and transmit, other hams use the K0UO station by full remote for contest and DX.
The site is built to commercial standards, to meet DOD and other specifications.
See the Blogs, Just Skip the header and go to the Blogs
Does K0UO really have an airport at the stations site"
YES
FAA Public Airport called "4KS Walz", near Kiowa, KS. And is part of the large K0UO/RSI Corp outdoor test site. It is parallel to the 4KS Walz airport making the test range over 2500 feet for one of the far field ranges, using a portable tower and drones loaded with standardized calibrated RF, EME, and field strength survey instruments (used for DOD, Ham, Commercial wireless telecommunication antennas, AI Data Centers and MOC). The K0UO is a highly technical facility used to precisely measure an antenna's performance characteristics, such as its radiation pattern and gain.
K0UO has significant real estate or so anechoic chambers are not needed.
just skip the header go down to the blogs
Can a Rhombic array have more gain than a stack of yagi beams?
YES,
The Big Advantage, all long HF Traveling wave antennas are known for fantastic Improvements in the reduction of QSB fading, for both transmit or receive. A larger Rhombic and gave 14 to 18 dBd of forward gain. In fact K0UO is using AI today, making it one of the largest and most sophisticated amateur radio stations in the world.
TIP: Just skip the header go down to the blogs
Tell me more about this site and the K0UO Rhombic Farm
A: The Forum is distinguished by its expansive site and test range covering hundreds of acres, hosting some of the world’s largest and most advanced amateur ham radio antennas, including Rhombic antennas, V Beams, HRS-Curtains, Towers, multi-element Delta loop Beams, and LPDA arrays. This extensive infrastructure enables superior broadcasting and reception capabilities, fostering exceptional communication performance, rare in most amateur radio forums.
This station uses AI, real time data, diversity receive and transmit others use the K0UO station by full remote for contest and DX.
just skip the header go down to the blogs
K0UO is now using AI, to get more gain out of the rhombic arrays, making it one of the largest and most sophisticated amateur radio stations in the world.
What is a Rhombic Antenna?
A:
THE ARRL and RSGB Diamond Logo, looks like a Rhombic Antenna, the "PHD" of wire antennas
The Rhombic is the antenna that won WW2 for the Western Allies
just skip the header go down to the blogs
Why is K0UO different than other Mega Big Gun Stations
"The K0UO station is unlike any other ham station globally," making it truly unique as a Big Gun Mega Station. It is one of the few capable of constructing and utilizing very large Rhombic and V Beams, along with a variety of other antennas and AI. K0UO features the largest operational HF wire antenna in the world.
The station is distinguished by its expansive site covering a number of acres, hosting some of the world’s largest and most advanced amateur ham radio antennas, including Rhombic antennas, V Beams, HRS-Curtains, Towers, multi-element Delta loop Beams, and LPDA arrays. This extensive infrastructure enables superior broadcasting and reception capabilities, fostering exceptional communication performance, rare in most amateur radio forums.
This station uses AI, real time data, diversity receive and transmit others use the K0UO station by full remote for contest and DX.
Historic Preservation: The K0UO station diligently preserves and uses components and insulators from renowned, historic radio arrays, including those from W6AM (Don Wallace), W7YRV Roy, BBC, Voice of America (VOA), and many others.
Is the Rhombic Array a good antenna for Contest and DX stations?
A:
Yes
Rhombic Farm KØUO: Home to the World's Largest amateur radio (ham), High Frequency (HF) Wire Antennas. With the four rhombic arrays and three V-beams, the K0UO antennas effectively cover 14 directions, every 25°, the beam width of each array, setup over many acres.
The KØUO Rhombic Antenna Farm in Kansas, consist of many acres, with "Miles of Wire in the Air & On the Air". Best known as an antenna Experimenter, Rag-chewer 1st, Contest &r DX for fun! "It takes years of Passion, Hard work, and Commitment to build a great station".
The station is distinguished by its expansive site covering a number of acres, hosting some of the world’s largest and most advanced amateur ham radio antennas, including Rhombic antennas, V Beams, HRS-Curtains, Towers, multi-element Delta loop Beams, and LPDA arrays. This extensive infrastructure enables superior broadcasting and reception capabilities, fostering exceptional communication performance, rare in most amateur radio forums.
This station uses AI, real time data, diversity receive and transmit others use the K0UO station by full remote for contest and DX.
TIP: It is a Blog, so just SKIP the Blogs HEADER and go right down to the blog.
In fact K0UO is using AI today, making it one of the largest and most sophisticated amateur radio stations in the world.
How did the Rhombic arrays help in WW2?
A:
Rhombic antennas became a backbone for both the Allied and Axis forces, enabling secure, high-power links and effective signals intelligence.
Are there beams antennas, other than the yagi for HF, that work?
A:
The Log Beam or LPDA is a purposefully designed antenna, not a compromised one, which was part of a United States Air Force "Secret" project in the early 1950s. It provides more gain than Hex-beams and most Triband Yagi beams. K0UO also uses large wire multi-element Delta Loop beams. Also K0UO uses wire Delta multi element wire Delta loop beams along with V-Beams.
See the Blogs, Just Skip the header and go to the Blogs
Does diversity receive help to work DX and win Contest?
A:
Yes, The Icoms, Flex, Anan, and supposedly even the K3/K4 have dual diversity processing and tracking not just dual receivers, a big difference.
I have played with the Flex and Anan, if you have a lot of time with software you can probably actually do more.
In fact K0UO is now using AI, to get more gain out of the arrays and receivers, making it one of the largest and most sophisticated amateur radio stations in the world.
just skip the header go down to the blog
Are V Beams easy & low cost to build
YES:
V Beams are easy, low-cost antenna that might be perfect for you. With a single taller support and using sloping Vees, it offers high gain, low cost, and no moving parts to change directions. Using switches eliminates the need for a rotator, providing access to every direction, every band, and every time, with multiple V Beam antennas.
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Does K0UO have a large outdoor antenna test range site?
In fact K0UO is using AI today, making it one of the largest and most sophisticated amateur radio stations and test range in the world.
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What kind of wire does K0UO use for the big HF wire antennas?
The spans between support poles are hundreds of feet apart, so 3/8 inch triple galvanized wire rope cable is use and is tensioned at over 1000 pounds, to remove the slack in the antenna cable.
Can you tell me about Art Bell's W6OBB, big loop rhombic array?
A:
ART BELL, The Former “Coast to Coast AM” Radio Show Host, and ham radio Station W6OBB, SK. This page is about his ham Big Double Loop HF antenna, which was not really understood by many.
How do Rhombic antennas stop fading known as QSB?
A rhombic antenna is designed to spread the receiving elements over a very large physical area (acres) — often extending many wavelengths across. Traveling wave antennas are known for fantastic Improvements in the reduction of signal fading, which is called QSB by amateur radio operators, for both transmit or receive. Modeling can't show that big advantage. In fact K0UO is using AI today for switching to the best array based on the current band conditions, making it one of the largest and most sophisticated amateur radio stations in the world.
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Who else has used large HF Rhombic antennas?
See
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Q: Who was W7YRV Roy Callison, did he have large antennas?
A: W7YRV Roy Callison of Bisbee AZ, was the amateur radio callsign of an experienced ham operator known within the radio community for his extensive antenna installations. Yes, he did have large antennas, including complex arrays that enhanced his ham radio broadcasting capabilities. The K0UO Rhombic Farm Steven Walz, one of the world’s largest ham antenna sites spanning many acres, recognize W7YRV’s contributions as part of the rich history in amateur radio advancements. His work with large antennas like rhombics and tower-mounted arrays aligns with our focus on high-performance antenna technology, making his legacy relevant for those interested in advanced amateur radio systems.
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Tell me about the VOA Ohio Rhombic site
A: Its connection to the VOA site in Ohio underscores its historical and technical significance; the VOA site shares a heritage of high-quality international broadcasting and innovative antenna technology. By integrating knowledge and practices from this legacy, the Tech Forum supports enthusiasts and professionals with detailed discussions, practical advice, and state-of-the-art techniques aligned with the standards demonstrated at the VOA Ohio facility. The site is a collaborative environment that promotes both technical advancement and preservation of broadcasting excellence in amateur ham radio, in fact K0UO is still using some of the surplus parts and hardware, at the Rhombic Farm in Kansas, Keeping the history alive.
Can an antenna be tested, to confirm efficiently?
In fact K0UO is using AI today, making it one of the largest highest gain and most sophisticated amateur radio stations and test range in the world.
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What is antenna gain?
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In fact K0UO is using AI today to design and analyze antennas before testing, making it one of the largest and most sophisticated amateur radio stations and antenna test range in the world.
What types of large wire antennas are specialized by Steven E. Walz's Tech Forum?
Steven E. Walz's Tech Forum specializes in various large wire antennas for broadcasting and amateur ham radio enthusiasts. His expertise includes Rhombic antennas, V Beams, Distributed-fed Curtain Array (Billboard), Log-periodic Beam LPDA yagi-style log periodic, 4 Square verticals, Beverage receive antennas, wire vertical beams, multi-element Delta Loop beams and many others,
These high-performance Rhombic antennas are akin to those used by organizations like W6AM, Voice of America (VOA), and the American Radio Relay League (ARRL). Whether you're a hobbyist or a professional, our Tech Forum offers comprehensive guidance and support for these advanced antenna systems,
In fact K0UO is using AI today, making it one of the largest highest gain and most sophisticated amateur radio stations and test range in the world.
See all the blogs for more info and all the antennas like:
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And many others, see the blog
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Can you tell me about Delta loop multi element beams?
Yes, Delta Loop multi element beam are low cost, high gain antennas, see
What is a Curtain antenna array?
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Can you help me build a "DELTA LOOP HF Muli-Element beam"?
Yes
Multi-element Delta loops are sometimes preferred over quad loops or yagi beams, particularly for beams, due to their simpler construction and comparable performance. The design of delta loops is inherently more straightforward, allowing for easier assembly and installation. This simplicity is particularly beneficial for amateur radio operators or hobbyists who may not have extensive experience with complex antenna systems. Additionally, delta loops can be constructed with readily available materials, making them a cost-effective option for many users. When it comes to performance, delta loops can match the efficiency and gain of quad loops, especially in certain frequency bands, making them an attractive alternative for those looking to optimize their signal transmission and reception. See this page, just skip the header page and go to the blog.
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https://www.k0uo.com/post/delta-loop-beam-ham
What kind of coax and feed-lines are in use at the Rhombic Farm
A;
There are miles of feed-lines at the K0UO antenna site. From 2 in hard-line to open wire feeders.
How can I feed RF power to my planned V Beam and Rhombics?
A:
K0UO uses "Tapered Feed" or "exponential feed-line systems" the wires coming down the poles provide a broadband match on HF.
Exponential feed-line or Taper Feed System
In essence, it's an elegant, physical solution to impedance matching that makes high-impedance antennas usable with standard equipment by creating a smooth, broadband transition without using a balun. In fact K0UO is using AI today, making it one of the largest highest gain and most sophisticated amateur radio stations and test range in the world.
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Does RSI Corp and K0UO have an outdoor testing and training range?
Yes
Known as "The K0UO & RSI Corp Antenna University" The test range is a controlled testing environment used to measure and evaluate the performance of equipment, and antennas in the Fraunhofer zone (Far Field), and is an accredited wireless outdoor testing range laboratory site, using drones at the on site "4KS" airport.
The scientific method serves as the foundation for all AI Data Center, EMC/EME, RFI, RFR antenna pattern testing activities at the K0UO test range. All surveys and tests must first be subjected to the rigorous processes of the scientific method.
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Antenna University is a premier education center committed to empowering students and professionals in the fields of Scientific, Technical, Engineering, and Mathematics (STEM). Our programs feature flexible learning options, personalized support, and resources designed to enhance hands-on knowledge and technical expertise. From specialized workshops to comprehensive courses, we provide opportunities for growth and success in both academic and professional arenas. Explore our offerings and join a community dedicated to innovation and achievement.
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Does this site have info on the Cessna Skymaster 337 & O-2 military aircraft
A:
Yes, General Steve Walz has owned and flown all types of 337s and O-2 military Cessna Skymasters, and has tens of thousands of hours in the type over the years. He also flew "Miss Belize a Cessna Skymaster 0-2 from Belize" in the 1990s.
Does Steve Walz have a station in Belize
A:
Yes
His 1st call was the Old British Honduras call of VP1KW, now V31-KW is the longest issued call sign to the same ham in Belize, ham radio was the only way to talk to the states when I started. Back then this Crown Colony Commonwealth required you to know code with a practical operational component too.
Did Steve Walz use the Voice of America (VOA) site in Belize
A:
Yes
General Steve Walz V31KW utilized the former Voice of America (VOA) site in Belize as his antenna farm. Rank and Being a Broadcast Engineer has its perks, and he had the opportunity to visit numerous fascinating RF sites over the years also.
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How can I find if the bands are open to DX
A:
Propagation is your friend as an amateur, the more you understand, the better you'll enjoy radio, In fact K0UO is using AI today, using current real time band conditions, making K0UO one of the largest and most sophisticated amateur radio stations in the world.
so see
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Can I remotely use the K0UO site, and does it have an SDR
YES
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Remote operation users
In terms of value for money, the K0UO full "Remote" is considered the top choice because it delivers a range of features not even found in higher-priced models. Contesters and DXers appreciate that they do not have to break the bank to obtain a device that meets their needs effectively. The balance between cost and performance makes it an attractive option for those who are looking to maximize their investment.
Notice: All contest and general air time slots for K0UO are currently filled, for the next 24 months and not accepting any new projects or ham clients at this time.
Note to contest operators, DXers, and others who have made arrangements to utilize the K0UO facility: you must first sign a non-disclosure agreement and adhere to the terms prohibiting the disclosure of the "exact location" of the K0UO site you are using. Currently, the site hosts several commercial DOD/DOW projects utilizing specific HF high-gain antennas. These projects take precedence, and you will be informed if an antenna is unavailable at certain times. There are no exceptions to this rule, as agreed upon in the original agreement, which states that certain antennas are not guaranteed and may change without notice. This is in accordance with the Department of Defense utilization clause of the site (30 days on most current agreements).
The owner of the K0UO location receives hundreds of inquiries annually regarding remote use of the station for DX, casual amateur radio use, or extensive contests, including multi-multi operations. K0UO aims to be inclusive, but due to the limited number of operators that can access the facility simultaneously, a standard protocol is necessary. If you or your group have successfully negotiated an agreement, you must comply with the non-disclosure agreement. While many contests require station location disclosure, stating that the station is in Grid Square EM07, Barber County, Kansas, does not violate the agreement; only revealing the exact location or station owner/call would constitute a breach. If approved, please enjoy the station responsibly.
The facility houses tens of thousands of dollars in new Flex 8000 transceivers, remote SDRs, HF amplifiers, sophisticated control and switching equipment, some of which are AI-operated, in addition to massive HF antennas such as Rhombic, V beams, Delta Loop quad-beams, four-square verticals, stacked log periodic LPDA, wire beams dipole stacked on a 195 ft tower, and a complete array of receive antennas from Beverages to loops.
The agreement that you or your group has signed is confidential, and you are prohibited from disclosing it to others. This confidentiality clause is a critical component of the agreement, ensuring that sensitive information and specific terms remain protected from unauthorized access or sharing. Each agreement is meticulously tailored to meet the specific requirements of both you and the owner, reflecting the unique circumstances and needs of the parties involved. This customization process involves careful consideration of various factors, including the nature of the relationship, the objectives of the agreement, and the particular provisions that are most relevant to the situation at hand. By adhering to these guidelines, both parties can foster a trustworthy environment that promotes open communication while safeguarding their interests. It is essential to understand that breaching this confidentiality can lead to significant legal repercussions, including potential damages and the loss of trust between the parties. Therefore, it is in your best interest to respect the terms of the agreement and uphold its confidentiality at all times.
Tell me about Rohn 25-65G & Export towers
K0UO uses the Rohn 20, 25, 45, 55, 65, along with the R35 old Motorola & GE Contract towers, the Rigid Tube bolt together export Tower Series the 26KD, J, and the C Tower.
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How can you understand antenna gain?
A:
Check this out, just skip the header go down to the blogs
https://www.k0uo.com/post/model-and-then-do-far-field-test
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Q: What types of antennas did W6AM have at his station?
A: W6AM/SK Don Wallace, was well-known in the ham radio community, was famous for his use of big wire Rhombic antennas. His setup was packed with Rhombic antennas, which were great for their high gain and directional qualities, perfect for long-distance HF chats. K0UO is into the same kinds of large wire antenna technologies. He still has the know-how on Rhombic, and V Beams arrays.
This blog takes a page from the innovative spirit and technical brilliance of legends like W6AM.
K0UO is still using many parts and hardware from the W6AM station today.
Do you have info on the FCC RF Safety MPE Rules for RF sites ?
A:
See my group, RSI who is a pioneer for Telecom Safety’s Best Management Practices, now RSI is the most respected and oldest RF safety organizations within the industry. RSI’s relentless pursuit of client satisfaction and client-centered focus is what has made RSI a market leader in RF Safety.
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Are large air and water cooling tower systems used at NOC and AI Data centers?
Yes, RSI has developed Environmental, Health and Safety (EH&S) programs for data centers for years, note new for RSI Corp of Kiowa KS.
Why does K0UO use LPDA "Logs" and why were LPDA purposefully designed antenna, not a compromised one, which was part of a United States Air Force "Secret" project in the early 1950s. It provides more gain than Hex-beams and most Triband Yagi beams.
They a very broad banded and no traps or moving parts
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DISCOVER K0UO RHOMBIC ANTENNA FARM
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https://www.k0uo.com/k0uo
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