Return-Path: Received: from rly-mf03.mx.aol.com (rly-mf03.mail.aol.com [172.20.29.173]) by air-mf09.mail.aol.com (v121.5) with ESMTP id MAILINMF094-952481f5680210; Mon, 05 May 2008 14:48:49 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mf03.mx.aol.com (v121.5) with ESMTP id MAILRELAYINMF038-952481f5680210; Mon, 05 May 2008 14:48:35 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Jt5jX-0004CI-SM for rs_out_1@blacksheep.org; Mon, 05 May 2008 19:48:19 +0100 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Jt5jW-0004C9-R0 for rsgb_lf_group@blacksheep.org; Mon, 05 May 2008 19:48:18 +0100 Received: from web63615.mail.re1.yahoo.com ([69.147.97.85]) by relay2.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1Jt5jW-00075B-Cb for rsgb_lf_group@blacksheep.org; Mon, 05 May 2008 19:48:18 +0100 Received: (qmail 56117 invoked by uid 60001); 5 May 2008 18:48:04 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:Date:From:Subject:To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID; b=oajQzXyvl1SJjpb4MyBPyVoywl6H7Bqns8xaXFcTQkBmCAY/ooifE9N2l4xEgnxdnO2Hh8jnQ68uAUFlKM7Tu3g+fXfbWwapcUFJfD0KNBjTh76tXPZrz2W7xTlyNRgDGBBbEdTYG0xSY/2uel4BjG9luNUNtZ0Wlo0WNzgU4vI=; X-YMail-OSG: 5OdDhtAVM1noEWM3Zjj5y5eJpBGGI.j5.jG7nr_8HXMpFZAJ456ImYQFI8wVlS3QesVi27PXkrKVOdlMr6emT.IKq9j9VONgWVh75SL4wxLRfHhHqdfUznPRQls- Received: from [205.208.227.45] by web63615.mail.re1.yahoo.com via HTTP; Mon, 05 May 2008 11:48:04 PDT Date: Mon, 5 May 2008 11:48:04 -0700 (PDT) From: KU4XR To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 Message-ID: <840119.56091.qm@web63615.mail.re1.yahoo.com> DomainKey-Status: good (testing) Subject: LF: Longwave Antenna Question Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=FORGED_YAHOO_RCVD 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 : n X-Mailer: Unknown (No Version) Date: 5/5/2008 From: Andy Bell - KU4XR - EM75xr Hello LOWfer, LFers, Experimenters, and such. I have a Longwave antenna question, and I would appreciate any input and suggestions. I am collecting the parts to build a LOWfer xmtr for next Northern Hemisphere winter. I have a decent portion of land, but no easy way to erect a vertical, and ground radials would be a problem, so I have been thinking about a tuned xmit loop for 184KHz. My question is; From your experience, ( or opinions ), which would perform better overall, a loop mounted in a vertical position ( more difficult for me ) , or in the horizontal position, which I could support with poles at about 20' height ( approx. 7 meters ) above ground. If I understand correctly, a loop does not radiate off the sides, so if mounted horizontally, there would be ( almost ) no upward, or downward radiation, but the loop should radiate at very low angles in an omnidirectional pattern, as a surface wave. But would any of this matter at the low frequency and 15 meter size limit for the antenna ?? Question #2: is there any advantage to a triangle ( 3 sided ) over a 4 sided loop ?? Again, mounted vertically versus horizontally. Thanks for any information, I will appreciate it. If you wish to do so; send your reply directly to me at: ku4xr - @ - yahoo.com 73, from Andy Bell - KU4XR - EM75xr ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ