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		<id>https://www.hfunderground.com/wiki/index.php?action=history&amp;feed=atom&amp;title=NVIS</id>
		<title>NVIS - Revision history</title>
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		<updated>2026-10-22T01:20:06Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://www.hfunderground.com/wiki/index.php?title=NVIS&amp;diff=15457&amp;oldid=prev</id>
		<title>R4002 at 14:19, 19 September 2023</title>
		<link rel="alternate" type="text/html" href="https://www.hfunderground.com/wiki/index.php?title=NVIS&amp;diff=15457&amp;oldid=prev"/>
				<updated>2023-09-19T14:19:41Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: white; color:black;&quot;&gt;
			&lt;col class='diff-marker' /&gt;
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		&lt;tr valign='top'&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;← Older revision&lt;/td&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 14:19, 19 September 2023&lt;/td&gt;
		&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;Near vertical incidence skywave.&amp;nbsp; MF and HF communications technique used for shorter range communications compared to traditional low radiation angle skywave or skip propagation.&amp;nbsp; NVIS is used by pirate radio broadcasters, military HF &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;users&lt;/del&gt;, amateur radio operators and various other users of the HF spectrum.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;Near vertical incidence skywave.&amp;nbsp; MF and HF communications technique used for shorter range communications compared to traditional low radiation angle skywave or skip propagation.&amp;nbsp; NVIS is used by pirate radio broadcasters, military &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;and government &lt;/ins&gt;HF &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;systems (see [[SECURE]], the [[SHARES]] networks, [[Civil Air Patrol]]&lt;/ins&gt;, amateur radio operators and various other users of the HF spectrum.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>R4002</name></author>	</entry>

	<entry>
		<id>https://www.hfunderground.com/wiki/index.php?title=NVIS&amp;diff=15455&amp;oldid=prev</id>
		<title>R4002: Created page with &quot;Near vertical incidence skywave.  MF and HF communications technique used for shorter range communications compared to traditional low radiation angle skywave or skip propagation...&quot;</title>
		<link rel="alternate" type="text/html" href="https://www.hfunderground.com/wiki/index.php?title=NVIS&amp;diff=15455&amp;oldid=prev"/>
				<updated>2023-09-19T14:16:39Z</updated>
		
		<summary type="html">&lt;p&gt;Created page with &amp;quot;Near vertical incidence skywave.  MF and HF communications technique used for shorter range communications compared to traditional low radiation angle skywave or skip propagation...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;Near vertical incidence skywave.  MF and HF communications technique used for shorter range communications compared to traditional low radiation angle skywave or skip propagation.  NVIS is used by pirate radio broadcasters, military HF users, amateur radio operators and various other users of the HF spectrum.&lt;/div&gt;</summary>
		<author><name>R4002</name></author>	</entry>

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