Zehlendorf MW flared skirt antenna and diplexer 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> Zehlendorf MW flared skirt antenna and diplexer   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> <A NAME="previous___next"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="1" ALIGN="bottom" WIDTH="1" HSPACE="0" VSPACE="0" ></A></B><B>previous   next</B></div> <div> <A HREF="id179.htm" TARGET="_top" TITLE="Zehlendorf MW flared skirt antenna and d"><U><B><</B></U></A><B>       </B><A HREF="id190.htm" TARGET="_top" TITLE="Zehlendorf MW flared skirt antenna and d"><U><B>></B></U></A></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="416"><div> <B>Zehlendorf MW</B></div> <div> <A HREF="zehlendorf_mw_1en.htm" TARGET="_top" TITLE="Zehlendorf MW flared skirt antenna and d"><U><B>1</B></U></A><B>  </B><A HREF="id179.htm" TARGET="_top" TITLE="Zehlendorf MW flared skirt antenna and d"><U><B>2</B></U></A><B>  </B><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><B>3</B></FONT><B>  </B><A HREF="id190.htm" TARGET="_top" TITLE="Zehlendorf MW flared skirt antenna and d"><U><B>4</B></U></A></div> </tD> <tD VALIGN=TOP><NOBR><div> <A HREF="id154.htm" TARGET="_top" TITLE="Zehlendorf MW Reusen Antenne und Diplexe"><U><IMG SRC="a94331f0.gif" border=0 width="51" height="31" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></U></A></div> <div> <A HREF="id154.htm" TARGET="_top" TITLE="Zehlendorf MW Reusen Antenne und Diplexe"><U>German</U></A></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66 WIDTH="56"><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> <B><IMG SRC="f0a688a0.jpg" border=0 width="104" height="138" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP BGCOLOR=#FFCC66 HEIGHT= 79 WIDTH="145"><bR> <div> <A HREF="http://www.waniewski.de/LW/Zehlendorf_LW/zehlendorf_lw_1en.htm" TARGET="_top" TITLE="http://www.waniewski.de/LW/Zehlendorf_LW"><U>Zehlendorf LW</U></A></div> </tD> <tD VALIGN=TOP WIDTH="416"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="79" ALIGN="bottom" WIDTH="416" HSPACE="0" VSPACE="0"></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66 WIDTH="69"><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 </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>by 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="869" BORDERCOLORLIGHT="#FFCC66" BORDERCOLORDARK="#FFFFFF" FRAME="BOX" RULES="ALL" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" BGCOLOR=#FFFFCC > <tR> <tD VALIGN=TOP COLSPAN=2 HEIGHT= 20 ><NOBR><div> <B>MW antenna Zehlendorf 603 kHz (50 kW) und 693 kHz (250 kW)</B></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66 WIDTH="261"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="20" ALIGN="bottom" WIDTH="261" HSPACE="0" VSPACE="0"></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 354 WIDTH="102"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="354" ALIGN="bottom" WIDTH="102" HSPACE="0" VSPACE="0"></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66><NOBR><div> <IMG SRC="4fbd05c0.jpg" border=0 width="464" height="348" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFFFCC WIDTH="261"><div> The photo shows the inflexion point of the flared skirt (cage). There is a long rod insulator at the top of the guy which keeps the flare skirt in its position.</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 HEIGHT= 19 WIDTH="650"><div> MW antenna Zehlendorf diplexer design</div> </tD> <tD VALIGN=TOP BGCOLOR=#FFCC66 WIDTH="186"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="19" ALIGN="bottom" WIDTH="186" HSPACE="0" VSPACE="0"></tD> </tR> <tR> <tD VALIGN=TOP BGCOLOR=#FFCC66 HEIGHT= 329 ><NOBR><div> <IMG SRC="c5480400.jpg" border=0 width="640" height="320" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="186"><div> The two frequencies 603 kHz (50 kW) and 693 kHz (250 kW) are very narrow. Because of this and the high powers the coils and capacitors become very large.</div> <div> Both branches of the diplexer contain one rejecton filter (trap circuit) and one absorbtion circuit for the second frequency.</div> <div> In addition a trap circuit of 177 kHz was provided, because this frequency is radiated from a neighbouring mast of 362 m  on the same antenna site.</div> </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 HEIGHT= 19 WIDTH="650"><div> Antenna impedance</div> </tD> <tD VALIGN=TOP BGCOLOR=#FFCC66 WIDTH="185"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="19" ALIGN="bottom" WIDTH="185" HSPACE="0" VSPACE="0"></tD> </tR> <tR> <tD VALIGN=TOP BGCOLOR=#FFCC66 HEIGHT= 605 ><NOBR><div> <IMG SRC="c657d570.jpg" border=0 width="637" height="599" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="185"><div> Convenient impedences at the base of the antenna.</div> </tD> </tR> <tR> <tD VALIGN=TOP BGCOLOR=#FFCC66 HEIGHT= 353 ><NOBR><div> <IMG SRC="c677e5b0.jpg" border=0 width="638" height="347" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="185"><div> Measured figures</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 HEIGHT= 19 ><NOBR><div> 603 kHz: Impedances at the input of the diplexer, measured at  the cable of 50 ohms.</div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66 WIDTH="185"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="19" ALIGN="bottom" WIDTH="185" HSPACE="0" VSPACE="0"></tD> </tR> <tR> <tD VALIGN=TOP BGCOLOR=#FFCC66 HEIGHT= 498 ><NOBR><div> <IMG SRC="c5880ec0.jpg" border=0 width="640" height="492" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="185"><div> Measured impedances  for 603 kHz from</div> <div> +13.8 kHz to - 18.45 kHz at the cable</div> <bR> <div> The outer circle of the Smith- Chart corresponds to the standing wave ratio of  s= 1.5.</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 19 ><NOBR><div> 693 kHz: Impedances at the exit of the diplexer, measured at  the cable of 50 ohms.</div> </NOBR></tD> <tD VALIGN=TOP BGCOLOR=#FFCC66 WIDTH="185"><IMG BORDER="0" SRC="1x1.gif" HEIGHT="19" ALIGN="bottom" WIDTH="185" HSPACE="0" VSPACE="0"></tD> </tR> <tR> <tD VALIGN=TOP BGCOLOR=#FFCC66 HEIGHT= 504 ><NOBR><div> <IMG SRC="c5980f20.jpg" border=0 width="640" height="498" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="185"><div> Measured impedances  for 693 kHz from</div> <div> +57.0 kHz to - 15.75 kHz at the cable</div> <bR> <div> The outer circle of the Smith- Chart corresponds to the standing wave ratio of  s= 1.5.</div> </tD> </tR> </TABLE></div> <div> <TABLE BORDER="1" CELLPADDING="6" CELLSPACING="1" WIDTH="865" 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="id179.htm" TARGET="_top" TITLE="Zehlendorf MW flared skirt antenna and d"><U><B><</B></U></A><B>       </B><A HREF="id190.htm" TARGET="_top" TITLE="Zehlendorf MW flared skirt antenna and d"><U><B>></B></U></A></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="340"><div> <B>Zehlendorf MW</B></div> <div> <A HREF="zehlendorf_mw_1en.htm" TARGET="_top" TITLE="Zehlendorf MW flared skirt antenna and d"><U><B>1</B></U></A><B>  </B><A HREF="id179.htm" TARGET="_top" TITLE="Zehlendorf MW flared skirt antenna and d"><U><B>2</B></U></A><B>  </B><FONT SIZE="3" COLOR="#000000" FACE="Arial" ><B>3</B></FONT><B>  </B><A HREF="id190.htm" TARGET="_top" TITLE="Zehlendorf MW flared skirt antenna and 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