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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=5
face="Times New Roman"><span lang=EN-GB style='font-size:18.0pt'>N0LX/P Using
Petlowany Ground coil</span></font><span lang=EN-GB><br>
3 July 2008<br>
Using a 9" spiral coil as a complete ground system on 20 and 40 meters<br>
Did it work? </span>See report below.<o:p></o:p></p>
<p class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><img width=733
height=763 id="_x0000_i1025" src="cid:image001.jpg@01C8DDF8.0A43C2E0"
style='height:572px;width:550px' alt="petlowany_setup.JPG"><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'>Front yard
setup using 14-foot graphite pole antenna and a Petlowany coil (resting on the
plastic table) as a ground system<br>
</span><a href="http://www.n0lx.com/minimast.html"><span lang=EN-GB>The PVC
base details can be seen here</span></a></font><span lang=EN-GB>.<br>
<br>
<br>
</span><img border=0 width=563 height=750 id="_x0000_i1026"
src="cid:image002.jpg@01C8DDF8.0A43C2E0" style='height:750px;width:563px'
alt="petlowany_ground1.JPG"><span lang=EN-GB><br>
The setup includes my FT-<st1:metricconverter ProductID="817, a" w:st="on">817,
a</st1:metricconverter> brand new Elecraft T1 autotuner, and the Petlowany
ground coil.<br>
The tuner had only been out of the box one hour. It did an amazing job
finding a match on this unorthodox setup.<o:p></o:p></span></p>
<p class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'><br>
</span><img border=0 width=800 height=523 id="_x0000_i1027"
src="cid:image003.jpg@01C8DDF8.0A43C2E0" style='height:392px;width:600px'
alt="pet_coil.JPG"><o:p></o:p></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'>The windings
are only <st1:metricconverter ProductID="9 inches" w:st="on">9 inches</st1:metricconverter>
across!<br>
The 9" coil is from </span><a href="http://www.n0lx.com/petlowany.html"><span
lang=EN-GB>a previous experiment</span></a></font> <span lang=EN-GB>to
duplicate Bill Petlowany's spiral-end antenna.<br>
The banana plug was for the full antenna and not used here. </span>I connected
to the inside plug.<br>
<br>
<o:p></o:p></p>
<p class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><img border=0 width=508
height=750 id="_x0000_i1028" src="cid:image004.jpg@01C8DDF8.0A43C2E0"
style='height:750px;width:508px' alt="graphite_pole.JPG"><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'>Looking up the
14-foot graphite pole<br>
Note the Eclipse Mint tin used as a coupler box.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-GB
style='font-size:12.0pt'>Always pushing the envelope, I set up an unusual
portable operation this evening in my front yard. The antenna was a 16.5-foot
piece of 24-ga. wire wound around a Cabelas graphite fishing pole and supported
by a small PVC base. Instead of radials for a ground, I tried a spiral
coil from my Petlowany experiment. <br>
<br>
The amazing Elecraft T1 autotuner found a match on both 20 and <st1:metricconverter
ProductID="40 meters" w:st="on">40 meters</st1:metricconverter>, but I doubted
any chance of making a contact. Well, beginning on <st1:metricconverter
ProductID="20 meters" w:st="on">20 meters</st1:metricconverter> (Sideband), I
worked Marty, KA7GKN. Then, on 14.170 MHz, I worked both XE1YQQ and XE1L in <st1:City
w:st="on"><st1:place w:st="on">Mexico City</st1:place></st1:City>!. They both
returned a 53 report. They were 58 and 56 respectively. Then, I dared the T1 to
find a match on 40. It took two tries, but it claimed a 1.0:1 match. Still
running 5 watts (but this time CW), I called CQ on 7.057 MHz and was answered
by Ed, KG4W, in VA and received a 559 w/QRN report from him. I heard him at a
579. Not bad for a very compromised antenna and a seriously compromised ground
(Or is it?). It's hard to believe anything nine inches square could possibly
work as a ground on <st1:metricconverter ProductID="40 meters" w:st="on">40
meters</st1:metricconverter>, but it did!<br>
<br>
Note: the first report I am aware of with someone using a Petlowany
coil as a groundplane was in a </span><a
href="http://www.wr6wr.com/newSite/articles/columns/wp699.html"><span
lang=EN-GB>World Radio report by William Caldwell, WA8ABO</span></a></font><span
lang=EN-GB>. <br>
<br>
</span>73,<br>
<br>
Jake, N0LX<br>
Golden, Colorado<o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>URL: </span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><a
href="http://www.n0lx.com/petlowany_ground.html"><span lang=EN-GB>http://www.n0lx.com/petlowany_ground.html</span></a></span></font><font
size=2 face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><strong><b><font size=5 color=navy face=Arial><span
style='font-size:18.0pt;font-family:Arial;color:navy'>“ </span></font></b></strong><strong><b><font
face=Arial><span style='font-family:Arial'>Não me mande os meus
"e-mails" de volta - eu já os vi!</span></font></b></strong><strong><b><font
size=5 face=Arial><span style='font-size:18.0pt;font-family:Arial'> <font
color=navy><span style='color:navy'>“</span></font></span></font></b></strong><font
color=navy><span style='color:navy'> </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Blog: </span></font><font
color=navy><span style='color:navy'><a
href="http://carlosfonseca-ct1gfq.blogspot.com/">http://carlosfonseca-ct1gfq.blogspot.com/</a></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Youtube: </span></font><font
color=navy><span style='color:navy'><a
href="http://youtube.com/user/carlosfonsecaalmada">http://youtube.com/user/carlosfonsecaalmada</a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'>Photos: </span></font><font
color=navy><span style='color:navy'><a
href="http://www.flickr.com/photos/9018639@N04/"><span lang=EN-GB>http://www.flickr.com/photos/9018639@N04/</span></a></span></font><font
size=2 color=black face=Arial><span lang=EN-GB style='font-size:10.0pt;
font-family:Arial;color:black'> </span></font><font color=navy><span
lang=EN-GB style='color:navy'>( New update: 28/06/2008 )</span></font><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Aquário: <a
href="http://www.aquariofilia.net/forum/index.php?showtopic=88850">http://www.aquariofilia.net/forum/index.php?showtopic=88850</a></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>NanoAqua: <a
href="http://www.aquariofilia.net/forum/index.php?showtopic=98581">http://www.aquariofilia.net/forum/index.php?showtopic=98581</a></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'><a
href="http://youtube.com/user/carlosfonsecaalmada"></a></span></font> <o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span><o:p></o:p></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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