Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 4054F38000089; Wed, 12 Oct 2011 17:49:56 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RE6fM-0006bg-QZ for rs_out_1@blacksheep.org; Wed, 12 Oct 2011 22:48:44 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RE6fM-0006bX-EK for rsgb_lf_group@blacksheep.org; Wed, 12 Oct 2011 22:48:44 +0100 Received: from mail-bw0-f43.google.com ([209.85.214.43]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RE6fK-0002WX-DW for rsgb_lf_group@blacksheep.org; Wed, 12 Oct 2011 22:48:44 +0100 Received: by bkas6 with SMTP id s6so931382bka.16 for ; Wed, 12 Oct 2011 14:48:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=O0D+gA40yvfpW8WBpqE+1jCmiYQy4EDZquQDrnv5/Jw=; b=Q+zEtkrM7/77RwTzDuhCHgGK1vzOq+Y1mFHRbfD3zXFs8u1gbwvl2EE8SPba9lzbtg SHiYmrCOWdopPFFBte+cqP6UpXvKTJRN0c+oWyDXWnYU/tAuiVvaYLFXwilnRhsguHEm q7k5oOvvI/D4GnIVKdu3t7Sye+C/u51oCHm1Q= MIME-Version: 1.0 Received: by 10.204.134.71 with SMTP id i7mr472745bkt.96.1318456116980; Wed, 12 Oct 2011 14:48:36 -0700 (PDT) Received: by 10.205.83.67 with HTTP; Wed, 12 Oct 2011 14:48:36 -0700 (PDT) In-Reply-To: <28104591-E8C5-43B8-A117-61B2655B3F24@numeo.fr> References: <28104591-E8C5-43B8-A117-61B2655B3F24@numeo.fr> Date: Thu, 13 Oct 2011 08:48:36 +1100 Message-ID: From: Dimitrios Tsifakis To: rsgb_lf_group@blacksheep.org X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: noise on VK and earth dipole tests Content-Type: text/plain; charset=ISO-8859-1 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: 0:2:482728096:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-m246.1 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d404a4e960b8373d6 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Hi John, > Depending on what you are doing it may be inverse cube law (9 dB). Would that be the attenuation expected for signal travelling strictly in the ground? 73, Dimitris VK1SV