Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 3AF1438000083; Tue, 2 Aug 2011 16:38:05 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1QoLiQ-0006Yz-Jn for rs_out_1@blacksheep.org; Tue, 02 Aug 2011 21:37:26 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1QoLiQ-0006Yq-84 for rsgb_lf_group@blacksheep.org; Tue, 02 Aug 2011 21:37:26 +0100 Received: from 113-mo2-8.acn.waw.pl ([62.121.95.113] helo=paranoid.lipkowski.org) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1QoLiO-0007Ix-1o for rsgb_lf_group@blacksheep.org; Tue, 02 Aug 2011 21:37:26 +0100 Received: from paranoid.lipkowski.org (localhost [127.0.0.1]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id p72KbTW6002680 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 2 Aug 2011 22:37:29 +0200 Received: from localhost (sq5bpf@localhost) by paranoid.lipkowski.org (8.13.7/8.13.6/Submit) with ESMTP id p72KbTR6002677 for ; Tue, 2 Aug 2011 22:37:29 +0200 X-Authentication-Warning: paranoid.lipkowski.org: sq5bpf owned process doing -bs Date: Tue, 2 Aug 2011 22:37:29 +0200 (CEST) From: Jacek Lipkowski To: rsgb_lf_group@blacksheep.org In-Reply-To: Message-ID: References: <001601cc5147$61942b50$0401a8c0@xphd97xgq27nyf> MIME-Version: 1.0 X-Spam-Score-sq5bpf: -2.601 () BAYES_00,SPF_HELO_PASS,SPF_PASS X-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Poor antennas Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed 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-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:360316960:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d404a4e38602d5d3c X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none On Tue, 2 Aug 2011, Warren Ziegler wrote: > Don't discount the increased interference from [...] exactly. i don't have much experience with lf, but i see a big deterioration of the noise floor at vlf. in december 2006 i could receive SAQ from my balcony using a loop by ear. in december 2007 i could barely receive it. in 2008 it was all lost in the noise. the same goes for other antennas that i use. BTW it is incredible that nowadays people in north america are using sophisticated receive setups with FFT to barely receive SAQ, and just 90 years ago they used crude receivers for a 24h/7 telecomunications service between the continents without problems. the noise floor is way higher now. VY 73 Jacek / SQ5BPF