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Eagle

Hawk

1520

Multi-Bander

JK Antennas can meet your needs with a wide range of HF Antennas, including Monoband, Dualband and Multiband, operating on frequencies from 6M to 80M.


We are also currently working on designs for Vertical Antennas, so check back with us for updates.

 

If you do not see what you are looking for here, please contact us for customized orders.

What you need to know about Yagi

 

First created in the 1920's by Professor Hidetsuga Yagi and his assistant, Shintaro Uda, the Yagi-Uda array (more commonly referred to as simply Yagi) is a sensitive and highly-directional antenna with closely coupled parasitic elements.

JK2040 Eagle - JK206 Stack

Forward Gain -

The concentration of energy in the direction you want emphasized. Gain should be maintained over an entire range of frequencies, and must be stated in comparison to a standard reference.


Unlike many other antenna manufacturers, we report  Gain (dBd) over a dipole in free space (dipole - 2.14 dBi)

 

Response Patterns -

The pattern of a directive antenna changes over a frequency band and is measured in two ways:

 

• Front-to-Back Ratio (F/B) - This is the ratio of the response in the direction of maximum gain compared to the response directly behind the antenna (at 180⁰)

• Front-to-Rear Ratio (F/R) - This is the ratio of the response in the direction of maximum gain compared to any response in the hemisphere behind the antenna (from 90⁰ to 270⁰)

• Standing Wave Ratios (SWR) -  An efficiency measure showing the relative size of reflections and their impact on the power of the antenna.


All of our antennas boast low SWR, across the antenna's operating band.

 

Mechanical Strength -

Impressive electrical performance means nothing if you have an antenna with poor mechanical design. Our antennas are designed to withstand high wind speeds (87 - 100mph depending on size), and can be ordered with optional trussing kits if heavy icing is a concern for the larger sized Yagi elements especially on 40M and 80M.

 

40M Rotatable Dipole

Yagi Antennas for Sale

Mono-Bander

10M

JK105

15M

20M

40M

Dual-Bander

JK2040

JK-Duos

JK106

JK154

JK155

JK204

JK205

JK206

JK402

JK403

JK404

JK404-Grande

Falcon

JK-Quattro

JK-TriBander

Eagle Assembly

Performance

There are several main parameters of Yagi electrical and mechanical performance which determine the effectiveness of your antenna.

JK Antennas provides this information on all of our products - you should know what you are buying, and we have done our best to provide all of these data points. If you have questions, please don't hesitate to ask us.

JK2040 Eagle on Crane

6M

JK65

30M

JK302

JK-WARC

1217

121730

1517

1012

80M

JK802

JK803

JK67

1015

 

The next generation in design, quality and manufacturing

© 2014 JK Antennas & Systems