------------ Původní zpráva ------------
 Od: ON4KHG <on4khg@voo.be>
 Komu: ...ok1teh...
Předmět: More info on Ground Gain assessment 
Datum: 18.10.2011 00:00:40
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Dear OM, dear friend, check this link: http://on4khg.be/wordpress/wp-content/uploads/2015/02/EME2012-Slide-Show-Ground-Gain-ON4KHG.pptx

Since you have shown some interest following the publication of the article "Ground Gain in Theory and Practice" in DUBUS 3/2011 or since I suppose you are
interested in the subject, I send you the present mail to advise you I have updated my website with the following material:

At the URL http://on4khg.be/wordpress/wp-content/uploads/2015/02/Ground_Gain_Geometry_and_Magnitude_Calculator_File1.xlsm , you will find   2 tools, under Excel format :

• Ground gain simulator : a tool to (theoretically) simulate the ground gain  (or an antenna elevation pattern in presence of ground effects) geometry and
   magnitude. It is possible to choose the nature of the soil, antenna height, frequency, ground flatness (horizontal or tilted) and to import one's own
   antenna (elevation) pattern, though six patterns are already embedded in the tool. The First Fresnel zone geometry is also displayed and fully configurable.
   Here below, two (partial) screenshots of this tool.:
                 
                  http://www.ok2kkw.com/xyz/image003.jpg    a    http://www.ok2kkw.com/xyz/image005.jpg
   

•  Ground gain processing file : a file that processes the data measured off-the-air in order to assess one's own ground gain (or elevation pattern) magnitude
  & geometry. This file is 95% automated through macro's. Once the data  has been recorded, just a few clicks and a few minutes later, you get a pdf  report
  of your measurement. An example of such a report is provided in attachment. 

                    http://www.ok2kkw.com/xyz/ground_gain_measurement_procedure_v1-0.pdf

• The detailed procedure (and its associated tools, i.e. GJTracker,  Spectrum Lab + its .usr configuration file and the tools above) to make your own measurement.
  This procedure is also attached to the present mail. - Examples of real off-the-air measurements, including the resulting  reports and the measured data files.

                        http://www.ok2kkw.com/xyz/ground%20gain%20sun%20set%2002042011.pdf

The complete package as a whole (.zip file) is also available on the website (16 MB).

Feel free to forward to whom may be interested.

Should you be performing your own measurements, I'm eager to receive any  feedback related to them.

Best 73,
Gaëtan, ON4KHG