Return-Path: Received: from mtain-da02.r1000.mx.aol.com (mtain-da02.r1000.mx.aol.com [172.29.64.74]) by air-df05.mail.aol.com (v129.4) with ESMTP id MAILINDF051-5ef24c12736b34e; Fri, 11 Jun 2010 13:33:31 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-da02.r1000.mx.aol.com (Internet Inbound) with ESMTP id EC5DD380005A8; Fri, 11 Jun 2010 13:33:28 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ON85r-0000kG-IL for rs_out_1@blacksheep.org; Fri, 11 Jun 2010 18:32:35 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ON85r-0000k7-5W for rsgb_lf_group@blacksheep.org; Fri, 11 Jun 2010 18:32:35 +0100 Received: from mail.gmx.net ([213.165.64.20]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1ON85p-00021v-J4 for rsgb_lf_group@blacksheep.org; Fri, 11 Jun 2010 18:32:35 +0100 Received: (qmail invoked by alias); 11 Jun 2010 17:32:27 -0000 Received: from p5DD3467D.dip.t-dialin.net (EHLO Clemens04) [93.211.70.125] by mail.gmx.net (mp012) with SMTP; 11 Jun 2010 19:32:27 +0200 X-Authenticated: #17214767 X-Provags-ID: V01U2FsdGVkX1+irE8TRimiuKdlx0EXR5mrt+NOGDnQ2BNkyVKVY9 1mn+5T+RNINh1o Message-ID: <017601cb098c$0f9e5fe0$0201a8c0@Clemens04> From: "Clemens Paul" To: References: <4C0C10E1.4090804@freenet.de><4C0C15BB.9010602@gmx.com><4C0C1960.5050708@freenet.de><4C0C1C35.2080401@gmx.com><4C0EB8AC.2070508@freenet.de> <53EF46B489244A09B02F194D6CD79DAB@df2py> <4C101E1F.7010501@iup.uni-heidelberg.de> <3E76E4DCF3684D3E99582E065CA7486E@df2py> <38A51B74B884D74083D7950AD0DD85E82A1C39@File-Server-HST.hst.e-technik.tu-darmstadt.de> <5E86B9622E084C7AABBED3AA4DF93ABF@df2py> <38A51B74B884D74083D7950AD0DD85E82A1C3A@File-Server-HST.hst.e-technik.tu-darmstadt.de> Date: Fri, 11 Jun 2010 19:32:23 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3664 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3664 X-Y-GMX-Trusted: 0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: Re: move from loop to loaded aerial Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G x-aol-sid: 3039ac1d404a4c12736874e3 X-AOL-IP: 193.82.116.20 Content-Transfer-Encoding: quoted-printable Hi Wolfgang, > A radiator with a relatively small active length should more or less= have a > spherical pattern. It is a quite common misbelief that a small antenna (with one active= element) has a spherical pattern. Just look at the Hertzian dipole.It has (nearly) the same pattern as= a fullsize halfwave=20 dipole. http://de.wikipedia.org/wiki/Hertzscher_Dipol http://en.wikipedia.org/wiki/Dipole_antenna Whereas lossy ground has a great influence on the pattern EZNEC is a great tool for such questions. 73 Clemens DL4RAJ ----- Original Message -----=20 From: "Wolf Ostwald" To: Sent: Friday, June 11, 2010 1:36 PM Subject: LF: move from loop to loaded aerial > Hello group ! > > After all the efforts, with a reasonable large loop, seem to be to= no avail, > I am going to move to a loaded radiator. Either vertical or longwire= . A > radiator with a relatively small active length should more or less= have a > spherical pattern. Hence the geometrical orientation, may it be vert= ical or > horizontal, should not have a big effect on the spherical pattern.= Is this > assumption rite or not ? > > A horizontal span could be easier be longer than a vertical one. > > I am not talking about a large structure like Stefan`s kite, I am ta= lking > about a more "average ham`s "-antenna like a 25m vertical, which can= stay > put for frequent testing and experiments. Any ideas about this ? > > 73 de wolf > > > > ----------------------------------------------------------------------= ---------- Eingehende eMail ist virenfrei. Von AVG =FCberpr=FCft - www.avg.de Version: 9.0.829 / Virendatenbank: 271.1.1/2931 - Ausgabedatum: 06/11/= 10 08:35:00