HF NVIS Magnetic Loop Mobile Antenna
<p>&amp;amp;amp;lt;p&amp;amp;amp;gt;&amp;amp;amp;amp;amp;amp;lt;br&amp;amp;amp;amp;amp;amp;gt;http://en.wikipedia.org/wiki/Near_Vertical_Incidence_Skywave&amp;amp;amp;lt;/p&amp;amp;amp;gt;</p> http://en.wikipedia.org/wiki/Near_Vertical_Incidence_Skywave