Return-Path: Received: from mtain-dd04.r1000.mx.aol.com (mtain-dd04.r1000.mx.aol.com [172.29.64.144]) by air-dd10.mail.aol.com (v129.4) with ESMTP id MAILINDD101-86104c7ff4d51e1; Thu, 02 Sep 2010 15:02:45 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-dd04.r1000.mx.aol.com (Internet Inbound) with ESMTP id 6A6A53800C384; Thu, 2 Sep 2010 14:54:48 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OrEub-0002m3-9b for rs_out_1@blacksheep.org; Thu, 02 Sep 2010 19:53:25 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OrEua-0002lu-HD for rsgb_lf_group@blacksheep.org; Thu, 02 Sep 2010 19:53:24 +0100 Received: from mail-bw0-f43.google.com ([209.85.214.43]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OrEuU-0001Aq-Db for rsgb_lf_group@blacksheep.org; Thu, 02 Sep 2010 19:53:24 +0100 Received: by bwz16 with SMTP id 16so1046168bwz.16 for ; Thu, 02 Sep 2010 11:53:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:date:message-id :subject:from:to:content-type; bh=2fPCAtFOBVeQM+v3+//vS/PW0LUrZY0QJOeD4QMJuNQ=; b=SOwdxvFLZAuEFyLcPyr/iV1shiWjxzpgZlE4e00GSlcXcXaFoAtwisbEKaDEo88we4 SR9sUe/tZPUgcLPdrFBcm0ooMeR+B3CFGngAkeFfAGwrtvVgQqfSDxYsh0oQsHSAbb2y SOQVDn7q1JAo0PzvThsPcq5hnLne2qRAGctfA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=LAc1haExc6RI7Mwu907dPTrlxRLmBY8fto3B+FEGu8s7JALCqul1a4i2zz5vF5JrRJ dOToGBejuoYaRei3ihBgkrz9S1EAHZ8Lw+mjsQUJA4mc/iqSdNjBzcLrApMD+O45BpA4 wJpFBg2dqr0YdXiTzcrftippAbcR+llWiARQU= MIME-Version: 1.0 Received: by 10.204.60.5 with SMTP id n5mr6966546bkh.162.1283453596934; Thu, 02 Sep 2010 11:53:16 -0700 (PDT) Received: by 10.204.136.67 with HTTP; Thu, 2 Sep 2010 11:53:16 -0700 (PDT) Date: Thu, 2 Sep 2010 19:53:16 +0100 Message-ID: From: Roger Lapthorn To: rsgb_lf_group@blacksheep.org, Chris Osborn , mike.dennison@ntlworld.com, G6ALB , John Wilson DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: LF: 136kHz QRSS3 with full "in the air" loop - reports please Content-Type: multipart/alternative; boundary=001636c5ab04bb215e048f4b537d 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=HTML_MESSAGE 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-AUTHENTICATION: mail_rly_antispam_dkim-d247.2 ; domain : gmail.com DKIM : fail x-aol-sid: 3039ac1d40904c7ff2f819e7 X-AOL-IP: 193.82.116.20 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) --001636c5ab04bb215e048f4b537d Content-Type: text/plain; charset=ISO-8859-1 I've now configured my loop to be fully "in the air" with no ground connections. As expected, tuning is now *much* more critical as I don't have about 50 ohms of earth loss dampening the tuning. First reports with this on 500kHz WSPR suggest it is a few dB better than the earth electrode antenna with elevated feed wires (-9dB S/N versus -12/13dB at best from M0BMU at 69km). The loop is now tuned and matched for 137.675kHz and the QRSS3 beacon is ON this evening. I'd be most interested to know if the signal is any better.* Please let me have any reports*. 73s Roger G3XBM -- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk http://www.youtube.com/user/g3xbm G3XBM GQRP 1678 ISWL G11088 --001636c5ab04bb215e048f4b537d Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable I've now configured my loop to be fully "in the air" with no= ground connections. As expected, tuning is now much more critical= as I don't have about 50 ohms of earth loss dampening the tuning.
=
First reports with this on 500kHz WSPR suggest it is a few dB better than= the earth electrode antenna with elevated feed wires (-9dB S/N versus -12= /13dB at best from M0BMU at 69km).

The loop is now tuned and matche= d for 137.675kHz and the QRSS3 beacon is ON this evening. I'd be most= interested to know if the signal is any better.

Please let me have any reports.

73s
Roger G3XBM


--
http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
http://www= .youtube.com/user/g3xbm
G3XBM=A0=A0 GQRP 1678=A0=A0=A0 ISWL G11088<= br> --001636c5ab04bb215e048f4b537d--