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A write-up about how antenna modeling software works

The most common use of correctly defined NEC models shows the electrical characteristics of the radiator system itself, but also it will show the field intensities that system will produce at a given distance for a given applied power, frequency, and earth characteristics -- and do so quite accurately.

The link below leads to a comparison of the groundwave field measured from a real-world AM broadcast system by a broadcast consulting engineering firm vs. the NEC-2D output using those same parameters.

The measured data also shows that professional quality MW field intensity meters are capable of accuracy greater than some attribute to them.

http://i62.photobucket.com/albums/h85/rfry-100/Measured_vs_NEC2D_Fields.jpg
 
Further note that more than two weeks after my first reply in this thread, there have been no posts here disputing the technical accuracy of my reply -- whether or not the single page linked there constituted a "paper blizzard."

Objection to my reply could be of interest, especially if based on the principles of physics.
 
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