Return-Path: Received: from rly-de11.mx.aol.com (rly-de11.mail.aol.com [172.19.170.147]) by air-de03.mail.aol.com (v121.5) with ESMTP id MAILINDE031-510488985ce1f1; Fri, 25 Jul 2008 03:50:48 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-de11.mx.aol.com (v121.5) with ESMTP id MAILRELAYINDE111-510488985ce1f1; Fri, 25 Jul 2008 03:50:41 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1KMI3Z-0006AV-FR for rs_out_1@blacksheep.org; Fri, 25 Jul 2008 08:49:41 +0100 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1KMI3Z-0006AM-1e for rsgb_lf_group@blacksheep.org; Fri, 25 Jul 2008 08:49:41 +0100 Received: from ik-out-1112.google.com ([66.249.90.182]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1KMI3W-0000Sd-Nl for rsgb_lf_group@blacksheep.org; Fri, 25 Jul 2008 08:49:40 +0100 Received: by ik-out-1112.google.com with SMTP id c29so2987442ika.4 for ; Fri, 25 Jul 2008 00:49:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:in-reply-to:mime-version:content-type :content-transfer-encoding:content-disposition:references; bh=jxlByM21S5J702Qj96ijvC/DoUaXpUuUxDClxfn+RT0=; b=TZAQhFQNn0FAJxl2aEwYxJMRiG1jvL1r9yqYnB3c02hyAtNdFhBNo0AJ2Wxq/ajK1k rZ8oVycD8sfHuR5qbhtHMVi35nlEjMPX4jnWXu4ADcFIY9Wf01wog14eGubRX3tCUZOR 0vcVNt6p28mmFEfv8VNfKnxSr/GpSN+iN2wm4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=message-id:date:from:to:subject:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=pgXPA8hcwQpCtGv10ALiDnm32PSNEb/ZmAjTdLPEwNJ74k5aP9yTrOFMIqiKKkYPMt pQuEJa3BJbkp01jpAyqmVulME/aDkYyb34FFRldNP33UBo+ORihxNOpod6bCc/2I5U+U wLgvymcI1CYSj9RhmSeyh9Lb1GSCo4V/7Ldzk= Received: by 10.210.39.20 with SMTP id m20mr1554351ebm.126.1216972177960; Fri, 25 Jul 2008 00:49:37 -0700 (PDT) Received: by 10.210.110.2 with HTTP; Fri, 25 Jul 2008 00:49:37 -0700 (PDT) Message-ID: Date: Fri, 25 Jul 2008 08:49:37 +0100 From: "Andy Talbot" To: rsgb_lf_group@blacksheep.org In-Reply-To: MIME-Version: 1.0 Content-Disposition: inline References: DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: Loop conundrum Content-Type: text/plain; charset=ISO-8859-1 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=0.0 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-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : n X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : ? X-Mailer: Unknown (No Version) Tnx for the replies on this. In the original post I'd forgotton that Chu-Harrington described a sphere just sufficient to enclose the antenna, so a pair od crossed loops would fit into the same size as a single one, as Jim pointed out. The phasing issue should have been obvious too - as one writer said, it is similar in outline to two crossed dipoles that just give 45 degree shifted linear polarisation if fed in phase. Oh well, saves the effort of making one to test-out. Back to writing software. Andy G4JNT www.scrbg.org/g4jnt