Return-Path: Received: from mtain-de01.r1000.mx.aol.com (mtain-de01.r1000.mx.aol.com [172.29.64.201]) by air-mb05.mail.aol.com (v127_r1.1) with ESMTP id MAILINMB051-a3834ba371823d4; Fri, 19 Mar 2010 08:43:46 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-de01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 00A58380000B7; Fri, 19 Mar 2010 08:43:44 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NsbWw-0006Yn-Pu for rs_out_1@blacksheep.org; Fri, 19 Mar 2010 12:42:22 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NsbWw-0006Ye-DZ for rsgb_lf_group@blacksheep.org; Fri, 19 Mar 2010 12:42:22 +0000 Received: from mail-yw0-f176.google.com ([209.85.211.176]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NsbWu-0004AP-A2 for rsgb_lf_group@blacksheep.org; Fri, 19 Mar 2010 12:42:22 +0000 Received: by ywh6 with SMTP id 6so1780078ywh.16 for ; Fri, 19 Mar 2010 05:42:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from :user-agent:mime-version:to:subject:references:in-reply-to :content-type:content-transfer-encoding; bh=GHFoV30JgJfI0jQKpRoWjAmbPFlmfzVjcrbRk8AO29A=; b=BS0tcsr59E2Nsz3xq9a0V4R+ziSzzVKhIHIIbgsPcGrQzIsHGkD5yra5QAczffQ3yL bqy3YvA0f0MD6HiT8Y6PVXB2aMolFQwp0ny9jAjkZ/IBXZUgGjskmyryVMHEcqhRtGZl lZp9Zxi4BMKmbQGl6ZmTN+JYX377CVEqXRpUg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; b=w8SC1AaICHuOGO/ckj2kwtjo9GUEHNqjsDPsQGKXcHxewk0VeZztlMkH+X3aK4+34H ttbHOcWQ+vuG41HFQ73wnzsTZuMNVpxYyzy6ZNG/VrvZ0yqOivX0m4aHSSa+Gkt0UFnK EXPrm+DtEfvoz0zCkc6PNpMUvB0bLiLllFcPU= Received: by 10.101.186.32 with SMTP id n32mr7027632anp.7.1269002531491; Fri, 19 Mar 2010 05:42:11 -0700 (PDT) Received: from [10.0.252.100] ([166.82.181.251]) by mx.google.com with ESMTPS id a1sm559312ibs.12.2010.03.19.05.42.09 (version=TLSv1/SSLv3 cipher=RC4-MD5); Fri, 19 Mar 2010 05:42:10 -0700 (PDT) Message-ID: <4BA370F0.5020004@gmail.com> Date: Fri, 19 Mar 2010 08:41:20 -0400 From: Dexter McIntyre W4DEX User-Agent: Messenger 9.0a1 (Windows/20071115) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <4BA0A501.5050506@abelian.org> <38A51B74B884D74083D7950AD0DD85E82A1B66@File-Server-HST.hst.e-technik.tu-darmstadt.de> <4BA3187E.9010801@abelian.org> In-Reply-To: <4BA3187E.9010801@abelian.org> DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: VLF: TA, 300m and new PA? Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit 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-AUTHENTICATION: mail_rly_antispam_dkim-m245.2 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d40c94ba371802a62 X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) Paul Nicholson wrote: > And anyway, there is nobody in North America with a suitable > rx at the moment! > What is the ERP of the 11.9 kHz Alpha transmission? I've recently greatly improved my night time reception of the Alpha signals. Your recent post stated a 1 db per 1000 km difference between day and night attenuation at 10 kHz. So I estimate I have a few db to go to detect the Alpha signal during a daylight path. Which is my objective. Perhaps I'm just dreaming :) W4DEX