<html><body>
<p>Could be this?:</p>
<p>https://en.wikipedia.org/wiki/Tropospheric_propagation</p>
<p>Kelly Black<br />KB0GBJ </p>
<blockquote>
<div class="message_header"><span>Mon Aug 31 2015 08:18:00 AM CDT</span> <span>from "Tom" <tompoe@meltel.net> </span> <span class="message_subject">Subject: Re: [tclug-list] ota signal snafu question</span></div>
<div class="message_content">
<table width="100%" bgcolor="#FFFFFF">
<tbody>
<tr>
<td><span style="font-size: x-small;">Hi, Rhubarbpieguy: Nice to know I'm not alone. I'm located in Eden Valley. My OTA antenna is a DIY 8-bay with 9 1/2" whiskers, along with pre-amp setup. Rescan has not corrected the issue. Currently getting ABC out of Chicago where I expected CBS out of Minneapolis (72 miles). What antenna are you using?<br /> Tom<br /> P.S. I am a big rhubarb pie fan as well. :)<br /> </span><br />
<div class="moz-cite-prefix">On 08/31/2015 07:53 AM, <a class="moz-txt-link-abbreviated" href="mailto:rhubarbpieguy@gmail.com">rhubarbpieguy@gmail.com</a> wrote:</div>
<blockquote cite="mid:55E44E4F.9000407@gmail.com">
<div class="moz-cite-prefix"><br /> <br /> On 08/31/2015 06:01 AM, Tom wrote:<br /> </div>
<blockquote cite="mid:55E433F2.9020601@meltel.net"><span style="font-size: x-small;">This weekend, antenna reception was weird. By Monday morning, I got poor to nonexistent reception across the spectrum. Interestingly, my channel 7 CBS is now channel 7 ABC. Has anyone noted any discussion about Minnesota tv farm changes taking place?<br /> Tom<br /> </span>
<pre class="moz-signature">--
John Washington emigrated from England in 1656 to Colony of Virginia.
It's time George Washington is issued his Green Card.
</pre>
<br /><fieldset class="mimeAttachmentHeader"></fieldset><br />
<pre>_______________________________________________
TCLUG Mailing List - Minneapolis/St. Paul, Minnesota
<a class="moz-txt-link-abbreviated" href="mailto:tclug-list@mn-linux.org">tclug-list@mn-linux.org</a>
<a class="moz-txt-link-freetext" href="http://mailman.mn-linux.org/mailman/listinfo/tclug-list">http://mailman.mn-linux.org/mailman/listinfo/tclug-list</a>
</pre>
</blockquote>
<br /> Somewhat OT, but I also noticed anomalies. I consistently receive signals from 90 miles away. However, yesterday I lost channels from the fringe but received several from 220 miles away.<br /> <br /> This morning I noticed three misidentified channels. Misidentification happens occasionally. Does rescanning correct you CBS and ABC displays?<br /> <br /><fieldset class="mimeAttachmentHeader"></fieldset><br />
<pre>_______________________________________________
TCLUG Mailing List - Minneapolis/St. Paul, Minnesota
<a class="moz-txt-link-abbreviated" href="mailto:tclug-list@mn-linux.org">tclug-list@mn-linux.org</a>
<a class="moz-txt-link-freetext" href="http://mailman.mn-linux.org/mailman/listinfo/tclug-list">http://mailman.mn-linux.org/mailman/listinfo/tclug-list</a>
</pre>
</blockquote>
<br />
<pre class="moz-signature">--
John Washington emigrated from England in 1656 to Colony of Virginia.
It's time George Washington is issued his Green Card.
</pre>
</td>
</tr>
</tbody>
</table>
<br /><br />
<div class="display_inline_attachment"><img src="display_mime_icon?type=" alt="" align="middle" border="0" /> (, 0 bytes) [<a href="javascript:ToggleVisibility('ATTCH_ID_')">View</a>| <a href="mimepart_download/0/">Download</a>]<br />
<div id="ATTCH_ID_" class="display_inline_attachment_body" style="display: none;"> </div>
</div>
</div>
</blockquote>
<p> </p>
</body></html>