I’m currently doing some research on NVIS (Near Vertical Incidence Skywave) and its interesting how much practical information I’m finding. Not all of it is consistent, but there is a wealth of material to work from. However, as hard as I’m looking, what I’m not finding is any sort of theoretical consideration of NVIS propagation.

There have been lots of practical experiments carried out on NVIS which have developed a large collection of useful insights into how to do it. What I’m not finding so far is good references that really make understanding more than a matter of a discussion on a paper or presentation about it.

I don’t want to sound negative, but all of the explanations I’ve found run out the same information about how it works, as if they come from the same source, but I can’t find that source. That seems strange. Where is that source and why can’t I find it?

I will certainly keep looking and add my findings here as I can get my thoughts together.

Categories: Antenna Modeling, Propagation
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