top of page

K0UO RHOMBIC ANTENNA FARM

cursor_click_pointer_mouse_select-512_ed

Screenshot_20250929_203841_LinkedIn_edit

The Mighty Rhombic is the "KING of Wire Antennas".

This is Scientific Technical Engineering, & Mathematics (STEM), Blog Site

If you have an big HF wire antenna project, let me know if I can help in anyway

The blog site has design, modeling, and construction information for building large HF Rhombic arrays, V-Beams wire arrays, Curtain arrays, Long wire, baluns, LPDA Log yagi, Feed-lines, Beverage receive antennas, BOG, Traveling Wave antennas, Delta loop multi element beams, & antenna vibration dampening. Info on Icom Diversity receive for the IC7610 and 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", and The Rhombic Antenna Farm which has the use of over a thousand acres around the main antennas for far field measurements, using portable towers and 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.

This site can be viewed in numerous languages check your browser and language flag

TO SEE,

the complete Blog list check @

https://www.k0uo.com/k0uo

Then click on each blogs Header that you want to read.

The ARRL, RSGB, Switzerland, and so many other amateur radio organizations use the Diamond Logo, which looks like a Rhombic antenna.

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 padding 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, 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.

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.

The complete Blog list is at the botton of the page

https://www.k0uo.com/k0uo

Then click on the HEADER of the Blog that you want to read.

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

Amateur Radio calls, K0UO and V31KW

SEE

https://www.linkedin.com/public-profile/settings?trk=d_flagship3_profile_self_view_public_profile

SEE, THE COMPLETE BLOG @

https://www.k0uo.com/k0uo

https://www.linkedin.com/public-profile/settings?trk=d_flagship3_profile_self_view_public_profile

SEE Steve's RF Testing Team overview, Founder of RSI Corp, https://en.wikipedia.org/wiki/RSI_Corporation

K0UO – Kiowa, Kansas, USA

Owner/Operator: Steve Walz, call sign K0UOhttps://www.blogger.com/profile/08142301711468531870

k0uo@arrl.net

K0UO Rhombic antenna Farm

Contesting and DXing Rules!

skylarkcolo
Jan 31, 2020
1 min read

Updated: Nov 24, 2025

I have been honored to be able to operate from a number of biggest contest and DX stations over the years.

Unfortunately many of us have found out that these are the RULES, and the LAW, at most of those monster big gun super contest stations!

BIG Power is the boss, (tubes with handles and very high gain antennas), DX audio was always used, Continuous Calls was required by each operator, Persistence that you will not, and must not be thrown off the frequency!

K0UO – Kiowa, Kansas, USA

Contesting and DXing Rules!

BIG Power is the boss, (tubes with handles and very high gain antennas), DX audio was always used, Continuous Calls was required by each operator, Persistence that you will not, and must not be thrown off the frequency!

Interference by others well not get under your skin, So just Keep Calling, no matter what.

Recent Posts

Comments