Return-Path: Received: from rly-da08.mx.aol.com (rly-da08.mail.aol.com [172.19.129.82]) by air-da05.mail.aol.com (v126.13) with ESMTP id MAILINDA052-a834b4f8a9d35b; Thu, 14 Jan 2010 16:20:46 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-da08.mx.aol.com (v125.7) with ESMTP id MAILRELAYINDA083-a834b4f8a9d35b; Thu, 14 Jan 2010 16:20:33 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NVX64-0002sO-Ph for rs_out_1@blacksheep.org; Thu, 14 Jan 2010 21:19:16 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NVX64-0002sF-Ag for rsgb_lf_group@blacksheep.org; Thu, 14 Jan 2010 21:19:16 +0000 Received: from smtp819.mail.ird.yahoo.com ([77.238.189.19]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1NVX62-0004oL-Ej for rsgb_lf_group@blacksheep.org; Thu, 14 Jan 2010 21:19:16 +0000 Received: (qmail 59866 invoked from network); 14 Jan 2010 21:19:05 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=btopenworld.com; h=Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:From:To:References:In-Reply-To:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=jsCEMmCvnYl4BRGlxtIL82aw+t6N1G6ClfL8miVgevlkIe2j7tHVhkPPIpyRKedKUlitPjNbj5JSs9SNxqrgJwNJnYICzhonWTgBQODTk6Wg2TeaVEy+gXjgF4S0O3zyb6hIz7cys9Al2a1F7hMCRs2v3keezDaIFc2jBvqUAH8= ; Received: from unknown (HELO JimPC) (james.moritz@86.180.119.65 with login) by smtp819.mail.ird.yahoo.com with SMTP; 14 Jan 2010 21:19:05 -0000 X-Yahoo-SMTP: qKIhhNCswBB2TTHr2BORWcGGR2mpopxhCcunGIxpCKQYiG07Q7UOhNo- X-YMail-OSG: VnrrjLIVM1mBpXljuK5IRLYP8ev_ptzhOI57ecDH_k_5NOOpotiAqA0vCfX8toJahrkDxUxQiL9yKcAO0g3zR8.o.s8Xb_15_5IEoWBxK4zTLxokBm1CT112byDJfbOiEvLEXpnpWO3DN5Y6KWtwvMC9gdWBYu2q11v86bKFYO3S8SG5cW9gVPJHyVVPzJSHrZMNo4WKeV.GIf1PL.Ip6QAgEBiNdtHrOgISlHPFs78zrA-- X-Yahoo-Newman-Property: ymail-3 Message-ID: From: "James Moritz" To: References: <000a01ca9530$c4ee97a0$0401a8c0@xphd97xgq27nyf> In-Reply-To: <000a01ca9530$c4ee97a0$0401a8c0@xphd97xgq27nyf> Date: Thu, 14 Jan 2010 21:19:05 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18005 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18005 X-Karma: unknown: DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: Re: 1/2 wave 500 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.1 required=5.0 tests=MISSING_OUTLOOK_NAME 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-IP: 193.82.116.20 Dear Mal, LF Group, Interestingly, if you do an EZNEC simulation of this antenna, it produces an upwards-directed, horizontally polarised lobe as you would expect. But it also produces vertically polarised radiation upwards and "off the ends" like a loop. My guess is that it is also behaving as a long, thin loop, with the missing vertical legs replaced by the distributed capacitance between the wires and ground plane. It would be an interesting thing to try, but quite hard to evaluate the results, I think! Cheers, Jim Moritz 73 de M0BMU