<div dir="ltr">Bill,<div><br></div><div>Good Info!</div><div><br></div><div>Dave Witten</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, 25 May 2021 at 11:02, <<a href="mailto:tangerinesdr-request@lists.tapr.org">tangerinesdr-request@lists.tapr.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Send TangerineSDR mailing list submissions to<br>
<a href="mailto:tangerinesdr@lists.tapr.org" target="_blank">tangerinesdr@lists.tapr.org</a><br>
<br>
To subscribe or unsubscribe via the World Wide Web, visit<br>
<a href="http://lists.tapr.org/mailman/listinfo/tangerinesdr_lists.tapr.org" rel="noreferrer" target="_blank">http://lists.tapr.org/mailman/listinfo/tangerinesdr_lists.tapr.org</a><br>
or, via email, send a message with subject or body 'help' to<br>
<a href="mailto:tangerinesdr-request@lists.tapr.org" target="_blank">tangerinesdr-request@lists.tapr.org</a><br>
<br>
You can reach the person managing the list at<br>
<a href="mailto:tangerinesdr-owner@lists.tapr.org" target="_blank">tangerinesdr-owner@lists.tapr.org</a><br>
<br>
When replying, please edit your Subject line so it is more specific<br>
than "Re: Contents of TangerineSDR digest..."<br>
Today's Topics:<br>
<br>
1. Testing magnetometer with nearby RF (Bill Engelke)<br>
<br><br><br>---------- Forwarded message ----------<br>From: Bill Engelke <<a href="mailto:bill.engelke@ua.edu" target="_blank">bill.engelke@ua.edu</a>><br>To: TAPR TangerineSDR Modular Software Defined Radio <<a href="mailto:tangerinesdr@lists.tapr.org" target="_blank">tangerinesdr@lists.tapr.org</a>><br>Cc: <br>Bcc: <br>Date: Tue, 25 May 2021 16:01:10 +0000<br>Subject: [TangerineSDR] Testing magnetometer with nearby RF<br>
<div lang="EN-US">
<div class="gmail-m_8821504518716194807WordSection1">
<p class="MsoNormal">I have a TAPR magnetometer in the ground (sitting at 24” deep).
<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I have tested for RF exposure as follows:<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">80 M dipole, about 20’ away and 15’ elevation, 1500 W on 80M<u></u><u></u></p>
<p class="MsoNormal">30 M vertical, about 60’ away 200W (legal limit) on 30M<u></u><u></u></p>
<p class="MsoNormal">40 M double bazooka about 50’ away and at 30’ elevation, 1500 W on 40M<u></u><u></u></p>
<p class="MsoNormal">DX Engineering hexbeam, on 50’ tower, base of which is 70’ away, 1500 W on 20M, 17M, 15M, 12M, 10M<u></u><u></u></p>
<p class="MsoNormal">4-element 6 meter beam on 50’ tower which is about 70’ away, 500 W on 6 M<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">There was no discernable effect on magnetometer readings from any of these tests, which were a carrier for 10 seconds at the noted power level.
<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">If anyone has ideas for additional tests, please advise; based on the above, my impression is that the current magnetometer should produce good results when in the yard of typical ham installation.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">-73- Bill, AB4EJ<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Magnetometer installation:<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><img width="482" height="640" style="width: 5.0208in; height: 6.6666in;" id="gmail-m_8821504518716194807Picture_x0020_1" src="cid:179a4628bab4cff311"><u></u><u></u></p>
</div>
</div>
TangerineSDR mailing list<br>
<a href="mailto:TangerineSDR@lists.tapr.org" target="_blank">TangerineSDR@lists.tapr.org</a><br>
<a href="http://lists.tapr.org/mailman/listinfo/tangerinesdr_lists.tapr.org" rel="noreferrer" target="_blank">http://lists.tapr.org/mailman/listinfo/tangerinesdr_lists.tapr.org</a><br>
</blockquote></div>