Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 0846738000088; Sun, 13 May 2012 19:27:07 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1STiAz-0002Ym-0w for rs_out_1@blacksheep.org; Mon, 14 May 2012 00:26:09 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1STiAy-0002Yd-Jo for rsgb_lf_group@blacksheep.org; Mon, 14 May 2012 00:26:08 +0100 Received: from mail-qc0-f171.google.com ([209.85.216.171]) by relay1.thorcom.net with esmtps (TLSv1:RC4-SHA:128) (Exim 4.77) (envelope-from ) id 1STiAw-0000TZ-O2 for rsgb_lf_group@blacksheep.org; Mon, 14 May 2012 00:26:07 +0100 Received: by qcsp15 with SMTP id p15so5383447qcs.16 for ; Sun, 13 May 2012 16:26:05 -0700 (PDT) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; bh=waQnE9b78FDZt02fuLsltLAsV6LrubSmgxXlhUClLDM=; b=ddFYwCrbMGtPI5NiX/VNoYwN9MzihGsIysK7apIjEPbMDI9Nvaqb5TOCSfEFV5KfN0 JzbE+/WJg/XXrZH4tRsi82yu1xYEWvnW3rpxjDy4MG0xvfAlzvAFsKgmbVKK/2INoQBY rA++iNCnkRE2nQt8KYkMVVL5iKtij348+B1cDtPvnDTBVgs695Hs7MMAu14+F0Nr8CMb VY49e+xzY/CzeGooMU5VAPxHjrJaDoEwZuwJ7iL4cog0D1mjmVmzsc+FlB2eviOUt/uL V3r1qlE2ZSrV2ueLfg/5uBndMSEJcyyiIJme3uQVxw7jRHILj4bh7fCH7GXbm/mZmNgB NJpw== MIME-Version: 1.0 Received: by 10.224.108.129 with SMTP id f1mr5050700qap.53.1336951565193; Sun, 13 May 2012 16:26:05 -0700 (PDT) Received: by 10.229.94.140 with HTTP; Sun, 13 May 2012 16:26:04 -0700 (PDT) In-Reply-To: <3f9e01cd3157$72c9dc80$1502a8c0@Clemens04> References: <4FAFEA71.8030700@iup.uni-heidelberg.de> <4FB01B8C.8050004@gmx.de> <3f9e01cd3157$72c9dc80$1502a8c0@Clemens04> Date: Sun, 13 May 2012 19:26:04 -0400 Message-ID: From: Warren Ziegler To: rsgb_lf_group@blacksheep.org X-Spam-Score: -0.7 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Clemens, The G3LNP reactance tuned loop receives off the front so it has the same output level as a similar sized K9AY etc, the vertical angle of the rear facing null is steerable by varying the reactance. [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [209.85.216.171 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (wd2xgj[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: e6de17d69e46ff4ea8db042ef2cd7e46 Subject: Re: LF: Cardioid RX antenna for LF... Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable 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-SCOLL-SCORE: 0:2:472352672:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d008.1 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d404e4fb0434b4072 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Clemens, The G3LNP reactance tuned loop receives off the front so it has the same output level as a similar sized K9AY etc, the vertical angle of the rear facing null is steerable by varying the reactance. 73 Warren K2ORS On Sun, May 13, 2012 at 6:26 PM, Clemens Paul wrote: >> BTW, Tony Preedy G3LNP published an article last year in QST which >> had a loop with variable reactance and resistance termination, by >> varying the reactance one could adjust the vertical angle of the main >> lobe. > > > If_I_recall_it_correctly this design uses the *backside* lobe of the K9AY > for vertical beam steering which is as we know a lot, 20dB-30dB,even weak= er > than the low gain frontside lobe. > 73 > Clemens > DL4RAJ.. > ----- Original Message ----- From: "Warren Ziegler" > To: > Sent: Sunday, May 13, 2012 11:37 PM > > Subject: Re: LF: Cardioid RX antenna for LF... > > > --=20 73 Warren K2ORS =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 WD2XGJ =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 WD2XSH/23 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 WE2XEB/2 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 WE2XGR/1