Vigra MW 3EN

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" height=50 BGCOLOR="#0099FF" TEXT="#F7F7FF"> <div> <FONT SIZE="4" COLOR="#FFFFFF" FACE="Arial" ><B>Bernd Waniewski - http://www.waniewski.de </B></FONT><B>     |     </B><A HREF="http://www.waniewski.de/index.htm" TARGET="_top" TITLE="http://www.waniewski.de/index.htm"><U><B>Startseite</B></U></A><B>   </B><A HREF="http://www.waniewski.de/id208.htm" TARGET="_top" TITLE="http://www.waniewski.de/id208.htm"><U><B>Home</B></U></A><B>   </B><A HREF="http://www.waniewski.de/id207.htm" TARGET="_top" TITLE="http://www.waniewski.de/id207.htm"><U><B>Acceuil</B></U></A></div> <bR> <div> </div> </td> </tr><tr> <td valign="top" height=430 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> Vigra MW  3EN</div> <div> <TABLE BORDER="1" CELLPADDING="6" CELLSPACING="1" WIDTH="869" BORDERCOLORLIGHT="#FFCC66" BORDERCOLORDARK="#FFFFFF" FRAME="BOX" RULES="ALL" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" BGCOLOR=#FFFFCC > <tR> <tD VALIGN=TOP BGCOLOR=#FFCC66 HEIGHT= 51 ><NOBR><div> <B>previous   next</B></div> <div> <A HREF="id299.htm" TARGET="_top" TITLE="Vigra MW 2EN"><U><B><</B></U></A><B>       </B><A HREF="id301.htm" TARGET="_top" TITLE="Vigra MW 4EN"><U><B>></B></U></A></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="245"><div> <B>Vigra    </B></div> <div> <A HREF="vigra_mw_1en.htm" TARGET="_top" TITLE="Vigra MW 1EN"><U><B>1</B></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><B>  </B></FONT><A HREF="id299.htm" TARGET="_top" TITLE="Vigra MW 2EN"><U><B>2</B></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><B>  </B><B>3</B></FONT><B>  </B><A HREF="id301.htm" TARGET="_top" TITLE="Vigra MW 4EN"><U><B>4</B></U></A></div> </tD> <tD VALIGN=TOP><NOBR><div> <A HREF="id297.htm" TARGET="_top" TITLE="Vigra MW 3DE"><U><IMG SRC="a94331f0.gif" border=0 width="51" height="31" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></U></A></div> <div> <A HREF="id297.htm" TARGET="_top" TITLE="Vigra MW 3DE"><U>German</U></A></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66><NOBR><div> <A HREF="http://www.waniewski.de/id208.htm" TARGET="_top" TITLE="http://www.waniewski.de/id208.htm"><U><B>Home</B></U></A></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66><NOBR><div> <A HREF="http://www.waniewski.de/id208.htm#all_english_versions_of_antenna_sites" TARGET="_top" TITLE="http://www.waniewski.de/id208.htm#all_en"><U>Survey of </U></A></div> <div> <A HREF="http://www.waniewski.de/id208.htm#all_english_versions_of_antenna_sites" TARGET="_top" TITLE="http://www.waniewski.de/id208.htm#all_en"><U>projects</U></A></div> <div> <A HREF="http://www.waniewski.de/id208.htm#all_english_versions_of_antenna_sites" TARGET="_top" TITLE="http://www.waniewski.de/id208.htm#all_en"><U> A-Z</U></A></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66><NOBR><div> <A HREF="http://www.waniewski.de/id208.htm#all_projekts_by_list_of_frequencies" TARGET="_top" TITLE="http://www.waniewski.de/id208.htm#all_pr"><U>Projects by </U></A></div> <div> <A HREF="http://www.waniewski.de/id208.htm#all_projekts_by_list_of_frequencies" TARGET="_top" TITLE="http://www.waniewski.de/id208.htm#all_pr"><U>list of </U></A></div> <div> <A HREF="http://www.waniewski.de/id208.htm#all_projekts_by_list_of_frequencies" TARGET="_top" TITLE="http://www.waniewski.de/id208.htm#all_pr"><U>frequencies</U></A></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66 WIDTH="197"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="51" ALIGN="bottom" WIDTH="197" HSPACE="0" VSPACE="0"></tD> </tR> </TABLE></div> <div> <TABLE BORDER="1" CELLPADDING="6" CELLSPACING="1" WIDTH="869" BORDERCOLORLIGHT="#FFCC66" BORDERCOLORDARK="#FFFFFF" FRAME="BOX" RULES="ALL" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" BGCOLOR=#FFFFCC > <tR> <tD VALIGN=TOP HEIGHT= 19 WIDTH="640"><div> MW antenna "Vigra" (Norway), guy coil</div> </tD> <tD VALIGN=TOP BGCOLOR=#FFCC66><NOBR><div> All photos by Jan Inge Ramsvik</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP BGCOLOR=#FFCC66 HEIGHT= 486 ><NOBR><div> <IMG SRC="6ad80e00.jpg" border=0 width="640" height="480" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="196"><div> <B>guy coil</B></div> </tD> </tR> </TABLE></div> <div> <TABLE BORDER="1" CELLPADDING="6" CELLSPACING="1" WIDTH="869" BORDERCOLORLIGHT="#FFCC66" BORDERCOLORDARK="#FFFFFF" FRAME="BOX" RULES="ALL" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" BGCOLOR=#FFFFCC > <tR> <tD VALIGN=TOP BGCOLOR=#FFCC66 HEIGHT= 486 ><NOBR><div> <IMG SRC="6ae80e00.jpg" border=0 width="640" height="480" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP><NOBR><div> <B>The use of guy coils</B></div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP BGCOLOR=#FFFFCC HEIGHT= 179 WIDTH="639"><div> The electrostatic field during thunder storms which is homogeneous when no conducting elements are present, could lead to field strengths greater than 10 kV/m. In the vicinity of the mast the field strength is very inhomogeneous with high field strength close to the mast. </div> <div> A flash over an insulator, which is caused by high differencesof electrostatic potentials along the guy may result in a lasting arc, which is fed by the RF energy of the transmitter. This effect can be avoided by grounding the guy ropes electrostatically. Only two insulators, one at the top close to the mast, and one at the bottom close to the guy foundation are used. </div> <div> The lower insulator is bridged by a coil, which grounds the guy statically.</div> <bR> <div> These coils are tuned to values, which reduce the current on the guys having practically no influence on the total current distribution of the antenna. </div> </tD> <tD VALIGN=TOP BGCOLOR=#FFCC66 WIDTH="197"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="179" ALIGN="bottom" WIDTH="197" HSPACE="0" VSPACE="0"></tD> </tR> </TABLE></div> <div> <TABLE BORDER="1" CELLPADDING="6" CELLSPACING="1" WIDTH="868" BORDERCOLORLIGHT="#FFCC66" BORDERCOLORDARK="#FFFFFF" FRAME="BOX" RULES="ALL" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" BGCOLOR=#FFFFCC > <tR> <tD VALIGN=TOP BGCOLOR=#FFCC66 HEIGHT= 51 ><NOBR><div> <B>previous   next</B></div> <div> <A HREF="id299.htm" TARGET="_top" TITLE="Vigra MW 2EN"><U><B><</B></U></A><B>       </B><A HREF="id301.htm" TARGET="_top" TITLE="Vigra MW 4EN"><U><B>></B></U></A></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="331"><div> <B>Vigra    </B></div> <div> <A HREF="vigra_mw_1en.htm" TARGET="_top" TITLE="Vigra MW 1EN"><U><B>1</B></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><B>  </B></FONT><A HREF="id299.htm" TARGET="_top" TITLE="Vigra MW 2EN"><U><B>2</B></U></A><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><B>  3</B></FONT><B>  </B><A HREF="id301.htm" TARGET="_top" TITLE="Vigra MW 4EN"><U><B>4</B></U></A></div> </tD> <tD VALIGN=TOP><NOBR><div> <A HREF="id297.htm" TARGET="_top" TITLE="Vigra MW 3DE"><U><IMG SRC="a94331f0.gif" border=0 width="51" height="31" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></U></A></div> <div> <A HREF="id297.htm" TARGET="_top" TITLE="Vigra MW 3DE"><U>German</U></A></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66><NOBR><div> <A HREF="http://www.waniewski.de/id208.htm" TARGET="_top" TITLE="http://www.waniewski.de/id208.htm"><U><B>Home</B></U></A></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66><NOBR><div> <A HREF="http://www.waniewski.de/id208.htm#all_english_versions_of_antenna_sites" TARGET="_top" TITLE="http://www.waniewski.de/id208.htm#all_en"><U>Survey of </U></A></div> <div> <A HREF="http://www.waniewski.de/id208.htm#all_english_versions_of_antenna_sites" TARGET="_top" TITLE="http://www.waniewski.de/id208.htm#all_en"><U>projects</U></A></div> <div> <A HREF="http://www.waniewski.de/id208.htm#all_english_versions_of_antenna_sites" TARGET="_top" TITLE="http://www.waniewski.de/id208.htm#all_en"><U> A-Z</U></A></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66><NOBR><div> <A HREF="http://www.waniewski.de/id208.htm#all_projekts_by_list_of_frequencies" TARGET="_top" TITLE="http://www.waniewski.de/id208.htm#all_pr"><U>Projects by </U></A></div> <div> <A HREF="http://www.waniewski.de/id208.htm#all_projekts_by_list_of_frequencies" TARGET="_top" TITLE="http://www.waniewski.de/id208.htm#all_pr"><U>list of </U></A></div> <div> <A HREF="http://www.waniewski.de/id208.htm#all_projekts_by_list_of_frequencies" TARGET="_top" TITLE="http://www.waniewski.de/id208.htm#all_pr"><U>frequencies</U></A></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66 WIDTH="93"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="51" ALIGN="bottom" WIDTH="93" HSPACE="0" VSPACE="0"></tD> </tR> </TABLE></div> <div> <TABLE BORDER="1" CELLPADDING="6" CELLSPACING="1" WIDTH="866" BORDERCOLORLIGHT="#FFCC66" BORDERCOLORDARK="#FFFFFF" FRAME="BOX" RULES="ALL" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" BGCOLOR=#FFFFCC > <tR> <tD VALIGN=TOP COLSPAN=2 BGCOLOR=#FFCC66 HEIGHT= 32 WIDTH="836"><div> <B>Visitor's statistics:</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 270 WIDTH="188"><div>  <script type="text/javascript" src="http://feedjit.com/serve/?vv=525&tft=3&dd=0&wid=2d826706c2aec926&pid=0&proid=0&bc=FFFFFF&tc=000000&brd1=012B6B&lnk=135D9E&hc=FFFFFF&hfc=2853A8&btn=C99700&ww=200"></script><noscript><a href="http://feedjit.com/">Feedjit Live Blog Stats</a></noscript>  </div> <div>   <script type="text/javascript" src="http://fc.webmasterpro.de/counter.php?name=Waniewski&style=pre&w=100&h=22&bgC=ffffff&p=01oldstyle" id="fcScript-Waniewski"></script> <noscript><div><img src="http://fc.webmasterpro.de/as_noscript.php?name=Waniewski" style="width:1px;height:1px;" alt="" /></div></noscript> <br /><a href="http://fc.webmasterpro.de/stat.php?name=Waniewski"><img src="http://fc.webmasterpro.de/img/sl/01.jpg" alt="visitor's statistic" style="border:0px" /></a>  </div> <bR> <div>  <script type="text/javascript" src="http://widgets.amung.us/small.js"></script><script type="text/javascript">WAU_small('m9rcvtp7h0ey')</script>  </div> <div> now online</div> </tD> <tD VALIGN=TOP BGCOLOR=#EEEEEE><NOBR><div> The flags of the visitors from all over the world </div> <div> (since 2009-1-18) :</div> <div>  <a href="http://s02.flagcounter.com/more/3cS"><img src="http://s02.flagcounter.com/count/3cS/bg=FFFFFF/txt=000000/border=CCCCCC/columns=7/maxflags=248/viewers=My+visitors+are+coming+from/labels=1/pageviews=1/" alt="free counters" border="0"></a>  </div> <bR> <div> The visitors from the USA and their flags of 50 federal states + DC </div> <div> (since 2010-3-21):</div> <div>  <a href="http://states.flagcounter.com/more/2x"><img src="http://states.flagcounter.com/count/2x/bg=FFFFFF/txt=000000/border=CCCCCC/columns=7/maxflags=60/viewers=Visitors+from+USA/labels=1/pageviews=1/" alt="free counters" border="0"></a>  </div> <bR> <div> The visitors from Canada and their flags of 13 provinces & territories </div> <div> (since 2010-4-24)</div> <div>  <a href="http://canada.flagcounter.com/more/MXYu"><img src="http://canada.flagcounter.com/count/MXYu/bg=FFFFFF/txt=000000/border=CCCCCC/columns=7/maxflags=60/viewers=Visitors+from+Canada/labels=1/pageviews=1/" alt="free counters" border="0"></a>  </div> <div>  <a href="http://2.s02.flagcounter.com/more/3cS"><img src="http://2.s02.flagcounter.com/count/3cS/bg=FFFFFF/txt=000000/border=CCCCCC/columns=7/maxflags=105/viewers=Last+arrived+visitors/labels=1/pageviews=1/" alt="free counters" border="0"></a>  </div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP COLSPAN=2 BGCOLOR=#EEEEEE HEIGHT= 66 WIDTH="836"><div> <B> <script type="text/javascript" src="http://widgets.amung.us/map.js"></script><script type="text/javascript">WAU_map('hzzgf97fs2n9', 740, 370, 'natural', 'star-orange')</script>  </B></div> </tD> </tR> <tR> <tD VALIGN=TOP COLSPAN=2 BGCOLOR=#FFCC66 HEIGHT= 79 WIDTH="836"><div> <B> <script type="text/javascript" src="http://widgets.tcimg.com/v1/flag.js"></script><script type="text/javascript">tc_flag("r37xujeu", "de", "ffffff", "000000", "000000", "10", "15");</script>  </B></div> <div> since 2010-6-27</div> </tD> </tR> </TABLE></div> <bR> <bR> </td> </tr></table></body>