K0UO Outdoor Antenna Test Range Facility for Measurement Testing in the Far Field.
- skylarkcolo
- Nov 1, 2024
- 21 min read
Updated: 2 days ago
The K0UO Antenna Test Facility ATF far-field range site,and 4KS Walz airport is a learning environment for Scientific, Technical, Engineering, & Mathematics (STEM) antennas projects, in an outdoor real world location in Kansas. If your group school or University has a research STEM program for antenna or aerospace, let me know, building and experimenting can help others learn and grow.
An antenna range is a controlled testing environment used to measure and evaluate the performance of antennas .Known as "Antenna University"
Only by measuring the antenna's RF radiation pattern as you have simulated can you fully grasp what the antenna is actually doing at your specific location. This process includes several crucial steps necessary for precise assessment and analysis.
The scientific method serves as the foundation for all 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.
Modern programs based on NEC2/ NEC4 try to model loss (absorption of RF) in the ground Electrical Conductivity under and around an antenna (using the Sommerfeld-Norton ground model). Older modelers are constrained to using an inadequate method of modeling loss and ground reflections at low angles. To form a skywave signal, all of the relevant interaction between the antenna and the ground under it happens within a distance of a 1 to 5 wavelengths radially out from the antenna, in the Fraunhofer zone (Far Field). Some antennas are more sensitive to ground losses than others. Surrounding objects in the near field of the antenna like buildings, trees, tower, antennas and fences, also play a big role that models do not show.
Real-world patterns might not align with theoretical models, unless you've tested the ground's electrical conductivity and the model incorporates that data.
I model all my antennas using NEC5 and HFTA (High Frequency Terrain Analysis) to evaluate the take of angle of the various antennas over real ground.
First, it is important to recognize that simulations provide a theoretical framework and an initial approximation of antenna performance. These simulations utilize various algorithms and models to predict how the antenna will behave under different conditions, such as frequency, polarization, and environmental factors. However, these models can only go so far; they cannot account for every variable present in the real world, including nearby structures, terrain variations, and other electromagnetic interference sources that may significantly impact the antenna's performance.
Once you have completed your simulations, the next crucial step is to conduct actual measurements of the RF radiation pattern in the field.
This typically involves using specialized equipment such as an RF field strength meter or a spectrum analyzer, along with calibrated antennas to capture the emitted signals from the antenna under test. By positioning the measurement equipment at various locations and angles around the antenna, you can gather data on how the antenna radiates energy in different directions, (gain and radiation pattern).
The K0UO amateur antenna range, and testing site has the use of over a thousand acres around the main antennas for far field measurements, parallel to the 4KS Walz airport making it 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, and Commercial wireless telecommunication antennas). 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.
The data collected from these measurements is invaluable. It allows you to visualize the radiation pattern, which is often represented in a polar plot or 3D visualization. This visualization reveals the main lobes of radiation where the antenna is most effective, as well as any nulls or areas of reduced signal strength. Such insights are critical for applications like wireless communication, where optimizing coverage and minimizing interference are paramount.
Moreover, measuring the RF radiation pattern can also uncover discrepancies between the simulated results and the actual performance. These discrepancies can arise from factors such as the antenna's physical installation, the presence of nearby objects that may reflect or absorb the RF signals, and variations in the environment that were not accounted for in the simulation. Understanding these differences is essential for refining antenna design and improving overall system performance.
In summary, the act of measuring the RF radiation pattern is not merely a technical requirement; it is a vital process that informs you about the antenna's real-world effectiveness and efficiency at your location. It bridges the gap between theoretical predictions and practical applications, ultimately leading to better system design, enhanced performance, and more reliable communication networks.
The K0UO amateur ham radio and commercial antenna range Antenna Test Facility ATF, is in an electromagnetically-quiet area, and testing site has the use of over a thousand acres around the main antennas for far field measurements, using a portable tower or drone loaded with calibrated RF, EME, power density, field strength, and non-ionizing radiation survey instruments, (the also has been used for DOD and Commercial measurements).
Antenna range testing is crucial for ensuring the efficiency, reliability, and even regulatory compliance of antenna systems. By providing precise performance measurements and reducing interference, antenna ranges contribute to the development of high quality antennas for modern communication networks. As technology evolves, these testing facilities will continue to be instrumental in enhancing connectivity and innovation across various industries.
The following equipment is what and my group, RSI will normally use to perform an RF test assessment:
Signal generator for the test source
Vector or scalar network analyzers
Calibrated RF Meter
Calibrated E-Field Probe
Calibrated H-Field Probe
Calibrated Personal Protection Monitor
2 Meter “Story Pole”
Digital Camera
Film Camera
Sling Psychrometer
GPS/GNSS and magnetic locator
Tape measures or survey lasers and optical equipment, with range poles, Trimble S3 with robotic function and 5000 meter range
Portable tower, and or drones with calibrated antennas and equipment
Real time data acquisition computer system for automated pattern measurement
Our Team in Action
Some equipment may have a limited frequency range, while some may be very directional. Most RF probes are for use at communication sites are field dependent as well. At sites with transmitters below 300 MHz for EME/MPE testing, per the FCC, both the magnetic and the electric field must be measured due to the fact that either one could be dominant. In addition the site may be assessed for induced and contact current hazards. So an RF assessment or NIER Report, at any site with RF is very involved and requires the person performing the assessment to be trained, competent, and qualified to perform the assessment. The assessor must have extensive knowledge of the site prior to to the RF testing, and the proper equipment.
My company RSI Corp in 2002 formed an educational alliance with NWOSU, RSI had offices and classrooms on the NWOSU Alva, OK campus, where they taught both University accredited, and Adult specialized RF and AG courses. Like Superior Survey Techniques SST (RF) which follows a book of the same name that I wrote in 1998. https://www.rsicorp.com/sst
RSI’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. https://www.rsicorp.com/technical-inspections
Because EME/RFR is considered a physical hazard, proper programs must be in place to ensure safety at an RF test site. This is just like noise or air pollution. Everyone knows about and has noise and air sampling done; the same application applies to electromagnetic energy emissions. Testing must be done by a qualified EME/RF person.
Testing must be done by a qualified EME/RF professional
Training must be done for workers who may be exposed to EME/RF above the uncontrolled levels so they can recognize and avoid the hazard
A Plan must be in place
Mobile Radio Technology (MRT) magazine March 1997 cover page, with the RSI and Steve Walz's performing an RF Survey, and a complete article on the procedures 
Layout out before testing
The assessment must be repeatable. The methods and procedures must be able to stand the scrutiny of a DOD, zoning board or city councils, as well as the possible scrutiny of a legal representative. My team uses industry standard procedures for environmental assessments, which have been able to stand the test of time.
This uncertainty term encompasses all non-repeatable errors stemming from the receiver, cables, temperature, variations in the AUT, and similar factors. It is anticipated that temperature fluctuations can be a factor at an outdoor range, and the source antenna might be affected by movement due to wind. Furthermore, scattering caused by the dynamic nature of the terrain and trees between the source and AUT is included in this term.
The best method is to estimate this quantity is by comparing the far-fields from two or more azimuthal scans conducted with identical scan parameters. Ideally, K0UO uses five or more repeat measurements are taken without altering the measurement system.
Then the far-field patterns of these repeat measurements are averaged, and this average is compared to a single measurement through complex plot subtraction. The pattern comparison and the RMS level are then utilized to determine the estimated uncertainty.
Conclusion
Antenna range testing is crucial for ensuring the efficiency, reliability, and regulatory compliance of antenna systems. By providing precise performance measurements and reducing interference, antenna ranges contribute to the development of high quality antennas for modern communication networks. As technology evolves, these testing facilities will continue to be instrumental in enhancing connectivity and innovation across various industries.
Antenna Gain: How well an antenna amplifies a signal in a particular direction.
Antenna Pattern: The 3D radiation pattern showing the directionality of the antenna.
Input Impedance
Frequency range
Polarization
Radiation Efficiency
Radiation Pattern
The Range Facilitates R&D and Innovation, Provides a dedicated environment for engineers, researchers and radio ham to develop and validate new antenna designs efficiently.
The best equipment on the market today can have as much as 4 db of error. These items can in some cases be addressed and mitigated with proper training. Some of the other equipment could have as much as 30 db of error in complicated environments
The Rhombic antenna farm, which I engineered and built the entire station single handed, stands as a testament to advanced engineering and design in the field of telecommunications. This facility is not just a simple installation; it encompasses a sophisticated array of technologies and infrastructure that enable effective communication over vast distances. Among its most notable features are the massive Rhombic antennas and beverage antennas, both of which are designed for optimal performance in receiving and transmitting signals.
Testing my antennas
Testing the Rhombic antennas, known for their high gain and directivity, are strategically positioned to maximize their effectiveness in various frequency ranges. Their unique geometric shape allows them to capture signals with remarkable precision, making them ideal for long-distance communication. Meanwhile, the beverage antennas, which are low-profile and often used for receiving, provide excellent performance for low-angle signals, enhancing the station's ability to receive distant transmissions.
In addition to the impressive antenna systems, K0UO also conducts far field measurements that are critical for understanding the performance and reach of the antennas. These measurements involve assessing signal strength and quality at various distances from the antennas, allowing for fine-tuning and optimization of the setup. This rigorous testing ensures that the station operates at peak efficiency and can handle the demands of modern communication needs.
The K0UO Antenna Test Facility ATF, is in an electromagnetically-quiet area.
Location:
The range is in a very rural area, near the center of the United States, the integrity of the test results have no RFI the from external interference.
Massive scale: The range is known for its size and extensive collection of antennas, and tower, which is rare for an individual operator.
Low interference: The remote, isolated location means the antennas are in an electromagnetically quiet environment, which is ideal for accurate and high-quality testing.
Extensive equipment: The facility houses in the aircraft hanger, many different types of antennas and equipment, used for a variety of tests and research.
Open and clear land: The rural setting, with its open spaces and clear fields, is visually striking to antenna enthusiasts.
Furthermore, the station is situated on an expansive property that consists of up to 1200 acres, which is either owned or leased around the antenna farm site. This substantial land area provides ample space for the installation of additional antennas, equipment, and support structures, as well as buffer zones that minimize interference from external sources. The strategic layout of the antennas across this vast expanse is carefully planned to reduce signal degradation and enhance overall performance.
The combination of cutting-edge engineering, advanced antenna technology, and a large operational footprint positions the K0UO Antenna Farm and Test range site as a leader in the field, capable of meeting the evolving challenges of telecommunications in an increasingly connected world. This comprehensive setup not only serves current communication needs but also allows for future expansion and adaptation as technology continues to advaA view ofnce.
My group RSI and myself has done RFI investigation work as an ARRL Voluntary Consulting Engineer (VEC), and Technical Specialist, and has provided technical assistance to many, by investigating RFI issues and finding the sources of the RFI.
To conduct the measurement using a drone at the K0UO test range site, the operator designs a flight path by determining the measurement width in azimuth and elevation, along with the granularity of the measurement lines. The drone autonomously follows this grid path, ensuring constant pointing and polarization alignment with the Antenna Under Test (AUT). The results are produced by combining the measured RF levels with the calculated angular position of the drone relative to the AUT. The data points are interpolated and displayed in a heat-map or 3D diagram. This process requires approximately 10 to15 minutes of flight time, with results generated instantly. These results then allow users to:
Implement contours and calculate the 3 dB beamwidth along with the Front to Back (FB) ratio
Compute beam center
Verify levels against regulatory masks
Compare results between models and measurements
Metrology is the scientific study of measurement just the ability to measure alone is insufficient; standardization is crucial for measurements to be meaningful. The test verified on 40 & 20 meters the design maximum gain, the azimuth of the maximum gain, steering of both direction and azimuth, design side-lobes, and the back-to-front ratio. A calibrated, W&G EMR meter for both the E and H field is used, with the use of a portable tower or drone in the far field at precise predetermined positions. This allowed the for the most suitable method of conducting the test measurements. The analysis and its feedback mechanisms are a major part of K0UO's projects.
All test at the K0UO range is done in the Far Fields, or the Fraunhofer zone which is the area where changes in distance from the antenna no longer produce a noticeable change in pattern shape or field impedance.
I have model all antennas using EZNEC and use HFTA (High Frequency Terrain Analysis) to evaluate the take of angle of the various antennas over real ground
Also you need to understand Traveling Wave Antennas, some programs will not model them correctly.
Explained
The classification of rhombic antennas as traveling wave antennas indicates that they operate based on the principle of wave propagation along the antenna structure. Unlike standing wave antennas, which have fixed points of maximum and minimum voltage (standing waves), traveling wave antennas like the rhombic utilize the continuous movement of waves along the length of the antenna. This results in a more uniform radiation pattern and often leads to enhanced performance in terms of signal strength and clarity.
Capture area or Effective Aperture is determined by antenna gain and the wavelength, not by antenna physical size.
All the Rhombic and Vee Beam antennas are field tested to confirm the design values, which concluded that the amplitudes & phases of the currents in the radiators conform with the antenna model. The antennas are readjustment as needed for max gain and best F/B. The radiation pattern of an HF antenna is formed as a result of reflection by the ground, and it may also be modified by currents flowing in the support structure. Data regarding the gain, accuracy of beam shape, and slew angle, as well as sidelobe level and the amplitude of the radiation both in the minima and to the rear of the antenna, this was determined through real measurements. It is difficult to predict from the amplitudes and phases of the current flowing in the radiating elements. If significant discrepancies between design and actual performance are found, such measurements are advantageous as changes are made.
K0UO proof tests fall into three categories:
(1) Comprehensive evaluation of radiation patterns, impedance, and gain for the antenna on 40 & 20 meters. (80, 30, 17, 15, 10 & 6 meters were considered secondary, but also tested)
(2) The minimum practical tests provided proof of performance of the installed antenna on 40 meters @ night time "F layer", and Daytime with "D layer absorption".
(3) Compares forward gain at the desired azimuth and elevation angle to average gain over the entire hemisphere
E & H meters below are used for the field testing
Above: Wandel & Goltermann E&H Field power density meter with fiber optic cable to PC, the meter-probe is on the crank-up test tower and uses a fiber cable down to the PC for data collection.
Also can use a E&H Field power density meter mounted on a large commercial drone.
K0UO is using Ace HF Pro and IONSUM, which are computer programs using the output of the IONCAP prediction method to determine the most suitable frequency band and required antenna gain under specific averaged conditions. The acronym stands for IONCAP SUMmary. Propagation predictions form an essential tool in the management of a HF wanting to work DX Stations. The data from such predictions are used to specify the types and operating frequency ranges required to work the DX by allowing for changes in the antennas take off angle to achieve maximum signal to the desired direction. Which it is used to contact DX stations utilizing both long path or short path on F layer, or to contact North American stations on daytime with high D layer adsorption (160, 80, 60 & 40 meters). Some reflection can be obtained from the D region, but the strength of radio waves is reduced; this is the cause of the marked reduction in the range of radio transmissions in daytime on the lower bands.
The K0UO station uses real time ionosonde (vertical HF RADAR ionospheric height-finder) data and ACE-HF Network, by Long Wave Inc which allows K0UO to analyze the entire HF spectrum using a single fixed transmitter location and multiple receive locations. The 64 Bit application has enhanced features and uses Google Earth and Google Maps to provide detailed HF Area Coverage Maps. And uses, and is part of real time GPS observables network to measure properties of the electron density such as the total electron content (TEC). The TEC is a measure of the total number of electrons that would be contained in a cylinder that extends up vertically above a given point on the earth all the way through the ionosphere K0UO uses, and was part of a real time GPS observables network to measure properties of the electron density such as the total electron content (TEC). The TEC is a measure of the total number of electrons that would be contained in a cylinder that extends up vertically above a given point on the earth all the way through the ionosphere. The ACE HF Pro, by Long Wave Inc allows the K0UO station to analyze the entire HF spectrum using a single fixed transmitter location and multiple receive locations. The station uses ionosonde (vertical HF RADAR ionospheric height-finder) data.
The Fresnel Region: An In-Depth Exploration
The Fresnel region, often referred to as the near field, is a critical area in the study of electromagnetic radiation, particularly in the context of antennas and wave propagation. This region is characterized by the fact that the radiation field pattern or shape is still in the process of formation, which means that the characteristics of the electromagnetic waves are not yet fully developed. The complexity of this region arises from the interaction of the emitted waves and the environment, leading to a variety of phenomena that can influence the overall performance of the radiating system. One important aspect of the Fresnel region is its relationship to induction field areas. Depending on the specific configuration and design of the radiating source, the Fresnel region may or may not encompass these induction fields. Induction fields are areas where the electric and magnetic fields interact in a manner that can induce currents in nearby conductive materials. The presence or absence of these induction fields can significantly affect the behavior of the radiation pattern and the effective range of the antenna. In the case of physically large arrays, such as the K0UO Rhombic site, the Fresnel zone can extend out several wavelengths from the source. This extension is due to the size and scale of the array, which creates a more complex interaction with the surrounding environment. The larger the array, the more pronounced the effects in the Fresnel region become, as the emitted waves can interfere with one another, creating constructive and destructive interference patterns. This can lead to a variety of radiation characteristics that are unique to the specific configuration of the array. Furthermore, the field impedance within the Fresnel zone is another crucial factor to consider. The field impedance, which is a measure of how much the electromagnetic field resists the flow of energy, may or may not have been established within this region. This means that the impedance can vary significantly depending on the distance from the source and the specific characteristics of the surrounding medium. As the electromagnetic waves propagate through the Fresnel zone, they may encounter different materials that can alter their impedance, leading to changes in the radiation pattern and efficiency of the antenna. In summary, the Fresnel region is an essential area of study in electromagnetic theory and antenna design. Its unique characteristics, influenced by the size of the radiating array and the presence of induction fields, play a pivotal role in shaping the radiation field pattern. Understanding the complexities of the Fresnel zone, including the establishment of field impedance, is crucial for optimizing antenna performance and ensuring effective communication in various applications.
The K0UO QTH is located in a wetland area on a creek bottom, characterized by high alkalinity and salt content. The nearby farmland, extending up to two miles away, has very high conductivity due to its red, iron-rich soil. The primary grounding is provided by a 5400-foot-deep oil well casing. Electrical Conductivity (EC) refers to a material's ability to conduct an electrical current, typically measured in milliSiemens per meter (mS/m). The presence of more ions, whether from acidity or basicity, enhances electrical conductivity, thus increasing the EC in soil. The Wenner "4-point or 4-pin Method" is the most common technique for assessing soil resistivity for broadcasters and communication sites. This method involves spacing probes 5 feet apart to measure resistivity at a 5-foot depth. Similarly, spacing the probes 40 feet apart yields a weighted average soil resistance from the surface down to 40 feet. This raw data is often processed with software to analyze soil resistivity as a function of depth. The accompanying photo shows three wooden pine poles supporting the radiating antenna cables surrounded by water; when the soil is drier, it has a very high salt content and is composed of red, iron-rich dirt. During winter months, up to six Beverage receive antennas, each ranging from 1000 to 1500 feet, are utilized in this area and the adjacent winter wheat fields.
I now use a Re-entrant which is 90% efficient by re-phasing the power back in the antenna, instead of heating up termination resistors. The K0UO antenna farm is now the largest in the world using wire arrays.
L. B. Cebik, W4RNL modeling
This is for 80 meters, it would need to be a half wave high to control ground loss
Does NEC5 model buried conductors
WA7ARK recommends NEC5 (newer MOM algorithm) from Lawerence Livermore Labs greatly adds to modeling capability (adds buried conductors) and makes it much easier to write models (many less restrictions compared to NEC2d)
Models vs. Prototypes: Why Field Adjustment Will Always be Necessary
L. B. Cebik, W4RNL
TO SEE the complete Blog list check @ https://www.k0uo.com/k0uo
My Corporation has checked 1000s of RF site
My team at RSI has a proven, successful track record in providing certified EME/RFR compliant surveys, safety training and solutions to thousands of industry and RF Telecom workers. RSI courses also meet the certification requirements for AT&T, Verizon, Bechtel, DOD, Motorola, Black & Veatch and most other major carriers and contracting organizations. Our authorized OSHA outreach trainers have decades of real world experience to deliver the safety solutions to organizations to comply with OSHA, FCC, EPA and FAA regulations, while also ensuring employee safety.
The K0UO antenna test range site serves as an invaluable learning environment specifically designed for a variety of Scientific, Technical, Engineering, & Mathematics (STEM) antennas projects, in an outdoor real world location. This unique facility provides students, researchers, and professionals with the opportunity to engage in hands-on experiences that are crucial for understanding the complexities of antenna design, testing, and implementation.
Purpose and Importance of the K0UO Antenna Test Range The primary purpose of the K0UO antenna test range is to facilitate practical learning experiences that complement theoretical knowledge. By offering a real-world setting, the site allows participants to observe and interact with antenna systems in various conditions, which is essential for grasping the principles of radio frequency (RF) communications and signal propagation.
The site can be used for RDT&E antenna characterization
Features of the Test Range The test range is equipped with state-of-the-art technology and resources that enable a wide array of experimental setups. Participants can utilize various types of antennas, including directional, omnidirectional, and specialized antennas, to conduct experiments that test their performance under different scenarios. The outdoor location is particularly advantageous as it mimics the actual environments where antennas will be deployed, allowing for more accurate data collection and analysis. ## Educational Programs and Workshops In addition to individual projects, the K0UO antenna test range hosts a series of educational programs and workshops aimed at fostering interest in STEM fields. These programs are tailored for students of all ages, from elementary school to university level, and are designed to inspire the next generation of engineers and scientists. Through collaborative projects, participants can work in teams, enhancing their problem-solving skills and encouraging innovative thinking.
Research Opportunities The site also serves as a hub for research activities, where academic and industry professionals can conduct advanced studies related to antenna technology. This includes exploring new materials, designs, and applications for antennas in various fields such as telecommunications, aerospace, and environmental monitoring. The collaborative nature of the test range encourages the sharing of knowledge and resources, leading to advancements in technology and methodology.
Community Engagement Furthermore, the K0UO antenna test range actively engages with the local community, offering outreach programs that promote STEM education. By partnering with schools and community organizations, the site provides resources and support to inspire young minds to explore careers in science and technology. This engagement not only enriches the educational landscape but also helps to bridge the gap between academia and the community. In summary, the K0UO antenna test range is more than just a testing facility; it is a comprehensive educational platform that plays a vital role in advancing knowledge and skills in the fields of science, technology, engineering, and mathematics. Through its hands-on approach, state-of-the-art resources, and community involvement, it significantly contributes to the development of future innovators and leaders in the STEM disciplines.
OVERVIEW: My group, RSI was originally a University based organization located at Northwestern Oklahoma State University, operating under a public-private partnership (RSI Educational Foundation, in 1997 Steve wrote the book, "Superior Survey Techniques". Mobile Radio Technology (MRT) magazine featured RSI Corp and Steve Walz's in an RF Survey article, which outlined the requirements on how to conduct non-ionizing radiation Radiofrequency Safety Maximum Permissible Exposure (MPE) analysis, using scientific best management practices. This document set the standard for legally documenting and substantiating compliance. The procedures has since become the standard for documenting radio frequency radiation both nationally and worldwide. Published in various trade journals and author of a number of white papers. Over the years I have been honored to serve on numerous committees, boards and advisory groups ranging from technical, safety, environmental and economic development. Retired from Electrophysics Science work, which specialized in RF/EMI/EMC fields. I have also taught many types of Telecom Safety, Antenna Theory and Technical classes since the late 1990's, (over 15,000 students) live or online through RSI Corp. Other career activities and businesses ranged from Farming, Broadcasting, Oil & Gas services, Concrete Walz Brand of concrete fencing and Wind/Oil & Gas radio tower services https://web.archive.org/web/20160219070059/http://rsiwind.com/, Walz Broadcasting, Border Line Electric, LMR Two-way radio services, and RSI "Defense Technical Information" Group which focuses on defense telecommunication command and control used by Federal Agencies and military see, https://www.rsicorp.com/dtic
I have been very fortunate and honored to continue military and aviation experiences throughout the years, by occasionally working with a few Defense Contractors and Government Agencies.
KDOT aviation education. Starting November, 2025 your local school districts can apply for high school aviation education courses that are outlined in the flyer. We have a video posted on our YouTube channel discussing these courses, that you can access here.
If your school is interested in adopting an aviation education program, please feel free to either have them reach out to us or schedule a meeting and include us. With our academic partners, we can answer any questions and walk your school district through the process. We can also put them in touch with other school districts that currently have an aviation education program.
These courses can be adopted anywhere, regardless of how rural or resource constrained your school district may be. There are strategies that can overcome many obstacles. Please help us spread the word.
Ray Seif | Director of Aviation
O: 785-296-6336
M: 785-496-8630
Kansas Department of Transportation
Eisenhower State Office Building
700 SW Harrison St, 9th Floor
Topeka, KS 66603-3745
The K0UO antenna test range site makes use of the 4KS Walz airport, known as "Antenna University", and its surrounding area as a practical learning environment for STEM (Scientific, Technical, Engineering, & Mathematics) antenna projects in a real-world outdoor setting. The site has a large outdoor area with a variety of terrain types for conducting user defined experiments. If your group has a University aerospace or antenna research STEM program, please let me know.
73
K0UO/V31KW
Seve Walz
Thank you Steve for hosting our WSU drone engineering team at your airport and antenna test site. We flew the 1200 plus acres, it's truly amazing to be at the world's largest antennatest range out in the country away from all types of interference
Steve has a very complex setup, and can really test and understand how the antennas work in the real world
Crazy interesting that someone could build all this for amateur radio use