Return-Path: Received: from rly-mg06.mx.aol.com (rly-mg06.mail.aol.com [172.20.83.112]) by air-mg08.mail.aol.com (v126.13) with ESMTP id MAILINMG084-a1c4b1e1770ae; Tue, 08 Dec 2009 04:08:15 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mg06.mx.aol.com (v125.7) with ESMTP id MAILRELAYINMG066-a1c4b1e1770ae; Tue, 08 Dec 2009 04:08:02 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NHw1T-000565-Jc for rs_out_1@blacksheep.org; Tue, 08 Dec 2009 09:06:19 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NHw1T-00055w-3n for rsgb_lf_group@blacksheep.org; Tue, 08 Dec 2009 09:06:19 +0000 Received: from 113-mo2-8.acn.waw.pl ([62.121.95.113] helo=paranoid.lipkowski.org) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NHw1O-0005oP-1S for rsgb_lf_group@blacksheep.org; Tue, 08 Dec 2009 09:06:19 +0000 Received: from paranoid.lipkowski.org (localhost [127.0.0.1]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id nB896l5k032310 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 8 Dec 2009 10:06:47 +0100 Received: from localhost (sq5bpf@localhost) by paranoid.lipkowski.org (8.13.7/8.13.6/Submit) with ESMTP id nB896kU7032307 for ; Tue, 8 Dec 2009 10:06:46 +0100 X-Authentication-Warning: paranoid.lipkowski.org: sq5bpf owned process doing -bs Date: Tue, 8 Dec 2009 10:06:46 +0100 (CET) From: Jacek Lipkowski To: rsgb_lf_group@blacksheep.org In-Reply-To: <702134.97980.qm@web86505.mail.ird.yahoo.com> Message-ID: References: <702134.97980.qm@web86505.mail.ird.yahoo.com> 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: Broadcast audio splatter on 136kHz 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-IP: 193.82.116.20 X-Mailer: Unknown (No Version) Hi Alan Just like you said - i have no personal expierience with the "rusty bolt" effect on LF/MF, and am extrapolating HF ideas down to LF :) Hypotheticaly speaking the structure size to get enough voltage into a metal-metal oxide junction is not that great. A metal fence >100m long should be enough for local signals. Paul-Henrik gave two frequencies: 171kHz and 225kHz (i can't see how they can give around 135.4kHz via mixing, so there is probably a third station involved). These could be Radio Russia from Kaliningrad (600kW) and Warsaw 1 from Solec Kujawski (1MW). Obviously the two are not local to him, so ICM might be probable (the "rusty bolt in the sky" :). VY 73 Jacek / SQ5BPF