RADIALS FOR VERTICALS

The EFFICIENCY of a vertical antenna is determined by two factors:

  • The RADIATOR above the ground
  • The RADIALS below the antenna

You will find detailed plans for building vertical antennas for several bands in the section on Vertical Antennas, HERE. 

 

Detailed information about radials is available in several places on the Internet.  One of the most comprehensive sources was written by Rudi Severns, N6LF and published in the ARRL's "QEX" magazine.  A short summary of his work was also published in the ARRLl's "QST".   Links to both of these are shown below. 

 

I have written a short introduction to radials on my overflow-web site, HERE.

 

Rob Sherwood (NC0B) has used Ground Screens for radials on his 160m vertical.

CLICK ON "SHERWOOD PRESENTATION"

 

For more information, see links under "Off Site:" below.

 

Off Site:

 

 

VERY DETAILED INFORMATION:

 

Here are the links to the work by Rudi Severns, N6LF: 

 

 

And if you want even more information, then read the following 7-Part Article in "qex Magazine" by Rudi Severns, N6LF:

  1. Experimental Determination of Ground System Performance for HF Verticals Part 1 - Test Setup and Instrumentation.  QEX - January/February 2009, pages 21-25.
  2. Experimental Determination of Ground System Performance for HF Verticals Part 2 - Excessive Loss in Sparse Radial Screens.  QEX - January/February 1009, pages 48- 52.
  3. Experimental Determination of Ground System Performance for HF Verticals Part 3 - Comparisons Between Ground Surface and Elevated Radials.  QEX - March/April 1009, pages 29-32.
  4. Experimental Determination of Ground System Performance for HF VerticalsPart 4 - How Many Radials Does My Vertical Really Need?  QEX - May/June 1009, pages 38-42.
  5. Experimental Determination of Ground System Performance for HF VerticalsPart 5 - 160 Meter Vertical Ground Systems.  QEX - July/August 1009, pages 15-17.
  6. Experimental Determination of Ground System Performance for HF VerticalsPart 6 - Ground Systems for Multiband Verticals.  QEX - November/December 2009, pages 19-24.
  7. Experimental Determination of Ground System Performance for HF VerticalsPart 7 - Ground Systems With Missing Sectors.  QEX - January/February 2010, pages 18-19.

 

LINK TO ACCESS ALL OF THESE QEX ARTICLES:

 

http://www.antennasbyn6lf.com/2009/12/series-of-qex-articles-on-ground-system-experiments.html