<div dir="ltr"><font size="4">Thanks Guys,</font><div><font size="4"><br></font></div><div><font size="4">In my attached file, I listed the YCCC Articles link which has Mike's Balun presentation.</font></div><div><font size="4">I did not see the OCFD presentation there.</font></div><div><font size="4"><br></font></div><div><font size="4">Thank You Bob for providing the OCFD presentation.</font></div><div><font size="4"><br></font></div><div><font size="4">My time with BARS did not go back to the days when these presentations were made.</font></div><div><font size="4">Would it be worthwhile to present material again?</font></div><div><font size="4"><br></font></div><div><font size="4">Steve</font></div><div><font size="4">AC1EX</font></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Dec 6, 2020 at 1:46 PM Bob Ravenstein <<a href="mailto:bobrav@msn.com">bobrav@msn.com</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">
<div lang="EN-US">
<div class="gmail-m_-4080650524764371511WordSection1">
<p class="MsoNormal">Jim</p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I found this OCFD presentation on Power point with notes from Mike</p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Bob</p>
<p class="MsoNormal">W1FDR</p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986" target="_blank">
Mail</a> for Windows 10</p>
<p class="MsoNormal"><u></u> <u></u></p>
<div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0in 0in">
<p class="MsoNormal" style="border:none;padding:0in"><b>From: </b><a href="mailto:n1hts@comcast.net" target="_blank">n1hts@comcast.net</a><br>
<b>Sent: </b>Sunday, December 6, 2020 1:35 PM<br>
<b>To: </b><a href="mailto:steven.schultz.m@gmail.com" target="_blank">Steven Schultz</a>; <a href="mailto:bars@w1hh.org" target="_blank">
w1hh</a><br>
<b>Subject: </b>Re: [bars] Sat AM Zoom discussion of Off-Center-Fed Dipole (OCFD) and list of possible topics for other discussions or presentations</p>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal"><span style="font-size:12pt;font-family:Helvetica,sans-serif;color:rgb(51,51,51)">Attached is N1IW's (SK) balun presentation he did at BARS.
<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12pt;font-family:Helvetica,sans-serif;color:rgb(51,51,51)">I can't find his OCFD presentation so if someone has that
<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12pt;font-family:Helvetica,sans-serif;color:rgb(51,51,51)">they can post it as well. We did a balun building BARS meeting
<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12pt;font-family:Helvetica,sans-serif;color:rgb(51,51,51)">for the 4:1 current balun and folks put up their OCF dipoles.
<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12pt;font-family:Helvetica,sans-serif;color:rgb(51,51,51)">Of course Mike's balun is for legal limit power. I believe N1ALO
<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12pt;font-family:Helvetica,sans-serif;color:rgb(51,51,51)">built a smaller version for 100 watts and is using it.
<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12pt;font-family:Helvetica,sans-serif;color:rgb(51,51,51)">
<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12pt;font-family:Helvetica,sans-serif;color:rgb(51,51,51)">All good info Steve.
<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12pt;font-family:Helvetica,sans-serif;color:rgb(51,51,51)">
<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12pt;font-family:Helvetica,sans-serif;color:rgb(51,51,51)">jim
<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12pt;font-family:Helvetica,sans-serif;color:rgb(51,51,51)">
<u></u><u></u></span></p>
</div>
<blockquote style="margin-top:5pt;margin-bottom:5pt">
<div>
<p class="MsoNormal">On 12/05/2020 9:53 PM Steven Schultz <<a href="mailto:steven.schultz.m@gmail.com" target="_blank">steven.schultz.m@gmail.com</a>> wrote:
<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<div>
<p class="MsoNormal" style="margin-bottom:4pt"><span style="font-size:18pt;font-family:"Times New Roman",serif">Hello BARS,</span></p>
<p class="MsoNormal" style="margin-bottom:4pt"><span style="font-size:18pt;font-family:"Times New Roman",serif"> </span></p>
<p class="MsoNormal" style="margin-bottom:4pt"><span style="font-size:18pt;font-family:"Times New Roman",serif">The Sat AM Zoom meeting today got into a discussion about Off-Center-Fed Dipoles (OCFDs). This topic raised my interest in discussing or presenting
topics such as:</span></p>
<p class="MsoNormal"><span style="font-size:18pt;font-family:"Times New Roman",serif"> </span></p>
<p class="MsoNormal"><span style="font-size:18pt;font-family:"Times New Roman",serif">Transmission Line Transformers </span></p>
<p class="MsoNormal"><span style="font-size:18pt;font-family:"Times New Roman",serif">Balun/Unun Construction </span></p>
<p class="MsoNormal"><span style="font-size:18pt;font-family:"Times New Roman",serif">Modeling Dipoles and Off-Center-Fed Dipoles with 4nec2 or EZNEC</span></p>
<p class="MsoNormal"><span style="font-size:18pt;font-family:"Times New Roman",serif">Off-Center-Fed Dipole Variations </span></p>
<p class="MsoNormal"><span style="font-size:18pt;font-family:"Times New Roman",serif">Feeding Off-Center-Fed Dipoles</span></p>
<p class="MsoNormal"><span style="font-size:18pt;font-family:"Times New Roman",serif">LTspice, a graphical SPICE tool from Linear Technology and Analog Devices</span></p>
<p class="MsoNormal"><span style="font-size:18pt;font-family:"Times New Roman",serif">
</span></p>
<p class="MsoNormal"><span style="font-size:18pt;font-family:"Times New Roman",serif">Both 4nec2 and LTspice are free.</span></p>
<p class="MsoNormal"><span style="font-size:18pt;font-family:"Times New Roman",serif"> </span></p>
<p class="MsoNormal"><span style="font-size:18pt;font-family:"Times New Roman",serif">I do not proclaim to be an expert on these topics, but over time, I have gained some worthwhile experience with them.</span></p>
<p class="MsoNormal" style="margin-bottom:4pt"><span style="font-size:18pt;font-family:"Times New Roman",serif"> </span></p>
<p class="MsoNormal" style="margin-bottom:4pt"><span style="font-size:18pt;font-family:"Times New Roman",serif">What follows here are my comments about one kind of feed point mechanism for a particular OCFD. I then discuss some other feed point mechanisms
for some other configurations of the OCFD.</span></p>
<p class="MsoNormal" style="margin-bottom:4pt"><span style="font-size:18pt;font-family:"Times New Roman",serif"> </span></p>
<p class="MsoNormal" style="margin-bottom:4pt"><span style="font-size:18pt;font-family:"Times New Roman",serif">Read on if you wish. Feel free to pass along your comments to me about either this prelude or the discussion in the attached file.</span></p>
<p class="MsoNormal" style="margin-bottom:4pt"><span style="font-size:18pt;font-family:"Times New Roman",serif"> </span></p>
<p class="MsoNormal" style="margin-bottom:4pt"><span style="font-size:18pt;font-family:"Times New Roman",serif">73’s,</span></p>
<p class="MsoNormal" style="margin-bottom:4pt"><span style="font-size:18pt;font-family:"Times New Roman",serif">Steve Schultz</span></p>
<p class="MsoNormal" style="margin-bottom:4pt"><span style="font-size:18pt;font-family:"Times New Roman",serif">AC1EX</span></p>
<p class="MsoNormal" style="margin-bottom:4pt"><span style="font-size:18pt;font-family:"Times New Roman",serif">BARS, Philips ARC, and MGEF</span></p>
<p class="MsoNormal" style="margin-bottom:4pt"><span style="font-size:18pt;font-family:"Times New Roman",serif"><a href="mailto:steven.m.schultz@ieee.org" target="_blank">steven.m.schultz@ieee.org</a></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
</div>
</blockquote>
<p class="MsoNormal" style="margin-right:0.5in;margin-bottom:5pt;margin-left:0.5in">
_______________________________________________ <br>
bars mailing list <br>
<a href="mailto:bars@w1hh.org" target="_blank">bars@w1hh.org</a> <br>
<a href="http://mail.w1hh.org/mailman/listinfo/bars_w1hh.org" target="_blank">http://mail.w1hh.org/mailman/listinfo/bars_w1hh.org</a> <u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
</div>
</blockquote></div>