Return-Path: Received: from mtain-mc04.r1000.mx.aol.com (mtain-mc04.r1000.mx.aol.com [172.29.96.76]) by air-ma02.mail.aol.com (v129.4) with ESMTP id MAILINMA022-b4f44c17e1c12c9; Tue, 15 Jun 2010 16:25:37 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-mc04.r1000.mx.aol.com (Internet Inbound) with ESMTP id A3A4C38000116; Tue, 15 Jun 2010 16:25:35 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OOcfu-00030u-Po for rs_out_1@blacksheep.org; Tue, 15 Jun 2010 21:23:58 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OOcfu-00030l-AH for rsgb_lf_group@blacksheep.org; Tue, 15 Jun 2010 21:23:58 +0100 Received: from mail-bw0-f43.google.com ([209.85.214.43]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OOcfr-0005yD-By for rsgb_lf_group@blacksheep.org; Tue, 15 Jun 2010 21:23:58 +0100 Received: by bwz19 with SMTP id 19so3135693bwz.16 for ; Tue, 15 Jun 2010 13:23:54 -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=yz2kGLF8Cgg0hFTcec7BTwLmUrhMhnEepSEgiOHcCQM=; b=mXOtFroxrFnaVbrVl7ohXBUGHLiUdEgRCCiVKP2HFpkp2rqn9YX01vWxrVF/EzCpSb z5pTkfFUd0PQ+UmqUBOc2jal8l8qXqWwtdT1rPXXxtfcKWvi80tP/8tcuPbAR8oHlcQs KPQurBvHn0bnef3cz5Z5bGIgALwGHQD6pREOs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=ab0LVzD04QO9UoJ1Vm0S4M/kYr8ucHBYR/F3jDoukxSybZ8v9/BHhWnEwKQhlWa4rr hrI0wfr/mlfFEh+o7l4fGyJCXSGxlVuAlwM4J0wmX93etGah/RSiaTI0LVDep/3VoD3W QTLgilULExEkIht3r1/244hUnEOA69NkH4wLo= MIME-Version: 1.0 Received: by 10.204.160.66 with SMTP id m2mr5821387bkx.69.1276633434503; Tue, 15 Jun 2010 13:23:54 -0700 (PDT) Received: by 10.204.100.69 with HTTP; Tue, 15 Jun 2010 13:23:54 -0700 (PDT) Date: Tue, 15 Jun 2010 21:23:54 +0100 Message-ID: From: Roger Lapthorn To: rsgb_lf_group@blacksheep.org DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: LF: Ground electrode antenna on 500kHz RX (and TX?) Content-Type: multipart/alternative; boundary=0015175cd1685f39ed048917623d 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-m286.1 ; domain : gmail.com DKIM : fail x-aol-sid: 3039ac1d604c4c17e1bf6895 X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) --0015175cd1685f39ed048917623d Content-Type: text/plain; charset=ISO-8859-1 This evening I tried listening with my 20m spaced ground electrode pair "antenna" on 500kHz WSPR. To my surprise it received G3ZJO and G7NKS at -26dB S/N. I'm tempted to try this on TX on 500kHz and see if anyone can receive me. On sub-9kHz it looks close to 50 ohms resistive but not sure what it looks like on 500kHz. This was the first time I've listened/looked on 500kHz for several weeks. 73s Roger G3XBM -- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk http://www.youtube.com/user/g3xbm G3XBM GQRP 1678 ISWL G11088 --0015175cd1685f39ed048917623d Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable This evening I tried listening with my 20m spaced ground electrode pair &q= uot;antenna" on 500kHz WSPR. To my surprise it received G3ZJO and G7N= KS at -26dB S/N.=A0 I'm tempted to try this on TX on 500kHz and see if= anyone can receive me. On sub-9kHz it looks close to 50 ohms resistive bu= t not sure what it looks like on 500kHz.

This was the first time I've listened/looked on 500kHz for several= weeks.

73s
Roger G3XBM


--
http://g3xbm-qrp.blogspot.com/
= http://www.g3xbm.co.uk
http://www.youtube.com/user/= g3xbm
G3XBM =A0 =A0GQRP 1678 =A0 =A0 =A0ISWL G11088
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