Mainflingen MW cross dipole antenna 8EN

<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> Mainflingen MW cross dipole antenna   8EN</div> <div> <TABLE BORDER="1" CELLPADDING="6" CELLSPACING="1" WIDTH="867" BORDERCOLORLIGHT="#FFCC66" BORDERCOLORDARK="#FFFFFF" FRAME="BOX" RULES="ALL" 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HREF="id332.htm" TARGET="_top" TITLE="Mainflingen MW cross dipole antenna 4E"><U><B>4</B></U></A><B>  </B><A HREF="id333.htm" TARGET="_top" TITLE="Mainflingen MW cross dipole antenna 5E"><U><B>5</B></U></A><B>  </B><A HREF="id334.htm" TARGET="_top" TITLE="Mainflingen MW cross dipole antenna 6E"><U><B>6</B></U></A><B>  </B><A HREF="id336.htm" TARGET="_top" TITLE="Mainflingen MW cross dipole antenna 7E"><U><B>7</B></U></A><B>  </B><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><B>8</B></FONT></div> </tD> <tD VALIGN=TOP><NOBR><div> <A HREF="id321.htm" TARGET="_top" TITLE="Mainflingen MW Kreuzdipol 8DE"><U><IMG SRC="a94331f0.gif" border=0 width="51" height="31" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></U></A></div> <div> <A HREF="id321.htm" TARGET="_top" TITLE="Mainflingen MW Kreuzdipol 8DE"><U>German</U></A></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66 WIDTH="59"><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> </tD> <tD VALIGN=TOP ROWSPAN=2 BGCOLOR=#FFCC66><NOBR><div> <A HREF="id333_view_from_.htm" TARGET="_top" TITLE="Mainflingen MW cross dipole antenna 5E"><U><IMG SRC="d978c690.jpg" border=0 width="140" height="105" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></U></A></div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP BGCOLOR=#FFCC66 HEIGHT= 44 WIDTH="110"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="44" ALIGN="bottom" WIDTH="110" HSPACE="0" VSPACE="0"></tD> <tD VALIGN=TOP WIDTH="376"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="44" ALIGN="bottom" WIDTH="376" HSPACE="0" VSPACE="0"></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66 WIDTH="72"><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 frequencies</U></A></div> </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> </tR> </TABLE></div> <div> <TABLE BORDER="1" CELLPADDING="6" CELLSPACING="1" WIDTH="867" BORDERCOLORLIGHT="#FFCC66" BORDERCOLORDARK="#FFFFFF" FRAME="BOX" RULES="ALL" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" BGCOLOR=#FFFFCC > <tR> <tD VALIGN=TOP COLSPAN=3 HEIGHT= 18 WIDTH="825"><div> MW Mainflingen cross dipole antenna  - base impedance at outer masts</div> </tD> </tR> <tR> <tD VALIGN=TOP BGCOLOR=#FFFFCC HEIGHT= 350 WIDTH="109"><div> Base insulated outer mast to realize a base impedance.</div> </tD> <tD VALIGN=TOP BGCOLOR=#FFCC66><NOBR><div> <IMG SRC="6f8cb580.jpg" border=0 width="459" height="344" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFFFCC WIDTH="244"><div> The design of the horizontal cross dipole antenna takes into account that vertical radiation should be avoided as best as possible to minimize distortions in the vicinity of the antenna. Complaints in the neighbouring villages stopped after using this antenna. Although the polarisation of the antenna is horizontal the vertical supporting mast are induced radiating vertically polarized. </div> </tD> </tR> <tR> <tD VALIGN=TOP BGCOLOR=#FFFFCC HEIGHT= 619 WIDTH="109"><div> Insulated suspension of the inner conductor at the mast. The inner conductor is grounded at the base to the earth net, then led by a pole and finally it enters  the lattice structure.</div> </tD> <tD VALIGN=TOP BGCOLOR=#FFCC66><NOBR><div> <IMG SRC="6fdcc650.jpg" border=0 width="460" height="613" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFFFCC WIDTH="244"><div> In order to reduce this vertical polarisation to a minmum the masts are base insulated for inserting a reactance in series between mast and ground. </div> <div> The appropriate reductance reduces the vertical radition to a minimum. The reactance is realized by a short circuited coaxial line represented by the mast as outer conductor and the vertical rope in the centre of the mast as inner conductor.</div> <div> The photos show the realization of this design. The coaxial line starts at the ground. The inner conductor is connected to the earth net. </div> </tD> </tR> <tR> <tD VALIGN=TOP BGCOLOR=#FFFFCC HEIGHT= 352 WIDTH="109"><div> Short circuit of the inner conductor to tha mast as outer conductor of a coaxial line.</div> </tD> <tD VALIGN=TOP BGCOLOR=#FFCC66><NOBR><div> <IMG SRC="6ffcd5a0.jpg" border=0 width="461" height="346" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFFFCC WIDTH="244"><div> The realized reactance depends on the height of the connection point where the inner conductor is fixed to the mast as outer conductor.</div> </tD> </tR> <tR> <tD VALIGN=TOP BGCOLOR=#FFFFCC HEIGHT= 354 WIDTH="109"><div> Connection to the earth net</div> </tD> <tD VALIGN=TOP BGCOLOR=#FFCC66><NOBR><div> <IMG SRC="701d05c0.jpg" border=0 width="464" height="348" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFFFCC WIDTH="244"><div> A careful connection of the inner conductor to the earth net is necessary.</div> </tD> </tR> </TABLE></div> <div> <TABLE BORDER="1" CELLPADDING="6" CELLSPACING="1" WIDTH="867" 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="id336.htm" TARGET="_top" TITLE="Mainflingen MW cross dipole antenna 7E"><U><B><</B></U></A><B>       </B><A HREF="mainflingen_mw_cross_dipole_antenna_1en.htm" TARGET="_top" TITLE="Mainflingen MW cross dipole antenna 1E"><U><B>></B></U></A></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="312"><div> <B>Mainflingen cross dipole</B></div> <div> <A HREF="mainflingen_mw_cross_dipole_antenna_1en.htm" TARGET="_top" TITLE="Mainflingen MW cross dipole antenna 1E"><U><B>1</B></U></A><B>  </B><A HREF="id331.htm" TARGET="_top" TITLE="Mainflingen MW cross dipole antenna 2E"><U><B>2</B></U></A><B>  </B><A HREF="id335.htm" TARGET="_top" TITLE="Mainflingen MW cross dipole antenna 3E"><U><B>3</B></U></A><B>  </B><A HREF="id332.htm" TARGET="_top" TITLE="Mainflingen MW cross dipole antenna 4E"><U><B>4</B></U></A><B>  </B><A HREF="id333.htm" TARGET="_top" TITLE="Mainflingen MW cross dipole antenna 5E"><U><B>5</B></U></A><B>  </B><A HREF="id334.htm" TARGET="_top" TITLE="Mainflingen MW cross dipole antenna 6E"><U><B>6</B></U></A><B>  </B><A HREF="id336.htm" TARGET="_top" TITLE="Mainflingen MW cross dipole antenna 7E"><U><B>7</B></U></A><B>  </B><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><B>8</B></FONT></div> </tD> <tD VALIGN=TOP><NOBR><div> <A HREF="id321.htm" TARGET="_top" TITLE="Mainflingen MW Kreuzdipol 8DE"><U><IMG SRC="a94331f0.gif" border=0 width="51" height="31" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></U></A></div> <div> <A HREF="id321.htm" TARGET="_top" TITLE="Mainflingen MW Kreuzdipol 8DE"><U>German</U></A></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66><NOBR><div> <A HREF="http://www.waniewski.de/id208.htm" TARGET="_top" 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