Rhombic Antenna testing in the Far Field

Acceptance testing in the Far Field with a large drone on all of the antennas at K0UO. Metrology is the scientific study of measurement...

Rhombic Math & Design

Ant-Math-03.xls (iw5edi.com) Wire Antenna Calculator (ws6x.com) Good symmetry is of vital importance for the performance of this antenna....

V O A Site in Belize

Voz de América, VOA BLZ (Punta Gorda, Belize ) In the past I have used the old Voice of America (VOA) site in Belize as my antenna farm...

Baluns, a VOA +100,000 watt and others

This is a 50 to 600 ohm balun removed from a VOA site in CA that I saved. It is a 300 lb pole mount 12:1unit. I plan on using it, this is...

Others Hams with the Rhombic

Others that are using the King of antennas, In the 1950s to 1970s W6AM had many 1000 footers and one was 1500 ft (in fact the main E/W...

Vertical Polarized 1/2 Rhombic

In 2021 a 40-6 meter vertical polarized 1/2 Rhombic antenna was installed at a center height of 160 feet. This antenna is dependent on...

Rhombic Termination Resistors

Large 600 to 800 ohm non-inductive resistors are used to terminate the antennas, making them highly directional with FB of more than 30...

Best Modeling INFO

For the best modeling data please see http://on5au.be/Cebic/longwire-rhombic.pdf http://on5au.be/ Below is just some of the data that you...

What is a Rhombic?

The ARRL and RSGB Diamond Logo is in fact, a Rhombic Antenna The Rhombic antenna was designed in the 1931 by Ed Bruce and Harald Friis....

Model and then do Far Field Testing

Acceptance testing in the Far Field is complete (12/2019) for the Curtain Array.  The test verified on 40 & 20 meters the design maximum...

The Ground

Modeling an antenna over real terrain gives you a visual picture of how terrain impacts performance. You can use a model to: Determine...

W7YRV Roy is SK 73

Roy will be missed he had 9 rhombics up at one time Please check out w7yrv.blogspot.com

W7YRV now SK Roy's Antenna Farm

You have to check it out Roy W7YRV, blog that he created back in 2013. Roy is in a his nineties now and I had a visit with him in January...

W6AM open feedlines 600 ohm

Now that was a bunch of open wire feeder lines!! The K0UO antennas are using some of W6AM's insulators and components. So W6AM is Still...

High gain bets Beams

Once I heard Don Wallace W6AM and a neighbor comparing antennas on 20 meters.  Don was running one of his rhombics aimed toward Europe. ...

Feed System

Below photo is from the base of the feed point poles, which are about 25-30 meters tall. Note the open wire "Tapered Feed" system wires...

The "KING of Wire Antennas" is a Rhombic"

K0UO is working on the "Lost Art of Rhombics"  with three of these large wire antennas at the Kansas QTH beaming at the 6 main DX areas,...

6 1/2 acres per Antenna

The Best Antenna is one that is "In the Air and On the Air"! As any good antenna experimenter knows, the more antennas the better, that...

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ABOUT THE BLOG

I hope the this will serve as a useful source to those seeking inspiration on building large wire antenna, or if you need help advice on your project. I started writing about my passions, my thoughts, and curious wonderings about our world. Take some time to explore the blog, read something interesting, and feel free to reach out if you would like to collaborate on a project together. If you have had or currently have rhombic or Vee beams up please provide us all the information about your projects. Most people don't really understand how much gain can be achieved out of these antennas and modeling doesn't do them Justice. All of my antennas have had measurements using broadcast type metering equipment for E&H field in the far field.

email @ k0uo@arrl.net

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Welcome to KOUO rhombic antenna Farm, a unique blog here for you to explore. Building installing and using large antennas has added such value to my life, and I love having the opportunity to share my passions and thoughts with my loyal readers. Read on, and enjoy.

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CONTACT

Thanks for your interest in my amateur radio station K0UO, and particularly my rhombic antennas which are some of the largest amateur radio antennas in the United States. Each one taking over six and a half acres of property. these rhombic and Vee beam antennas are optimized for 40 and above.
My email   k0uo@arrl.net

K0UO Rhombic antenna Farm