Return-Path: <owner-rsgb_lf_group@blacksheep.org> X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_MED,SPF_PASS,T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: EATSERVER: mailn 1166; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mailn.lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id uB7Dtprv018402 for <sq5bpf@lipkowski.org>; Wed, 7 Dec 2016 14:55:52 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cEccy-00036L-SM for rs_out_1@blacksheep.org; Wed, 07 Dec 2016 13:51:20 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cEccj-00036A-Q1 for rsgb_lf_group@blacksheep.org; Wed, 07 Dec 2016 13:51:05 +0000 Received: from porthos.netcom.co.uk ([217.72.171.73]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.87) (envelope-from <vlf0403@abelian.org>) id 1cEccd-0002uM-4c for rsgb_lf_group@blacksheep.org; Wed, 07 Dec 2016 13:51:04 +0000 X-DKIM-Result: Domain=abelian.org Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=abelian.org ; s=default; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: MIME-Version:Date:Message-ID:From:References:To:Subject:Sender:Reply-To:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=J9TdTJHWq8su3qXNBPUJtA2KKX5pGW4uKAnIS3HlvWw=; b=H+PIO+2Y/tFRV1sRpzIfIkse1s 0TxUTMy8GsTGuXFmEC5HrqUTFX1iguqBNPeXD+gF8TdaLjI+pmQXgbnWOv4+yB1aJ2k6bs394Nf4q DrczexAH2n6V2KIwakj1OtjNJwxe0s09qAsmd7jlhJlfMCbz//f0xcj+du32f6MuYJrM=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:49787 helo=pn.abelian.org) by porthos.netcom.co.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.87) (envelope-from <vlf0403@abelian.org>) id 1cEcca-0007Cj-Uh for rsgb_lf_group@blacksheep.org; Wed, 07 Dec 2016 13:50:57 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 4A02440066E for <rsgb_lf_group@blacksheep.org>; Wed, 7 Dec 2016 13:50:56 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: <5843F55D.1020504@posteo.de> <5844957F.3070004@posteo.de> <5846942D.90906@abelian.org> <5847219F.7010904@posteo.de> <5847EC54.7090801@posteo.de> From: Paul Nicholson <vlf0403@abelian.org> Message-ID: <584813C0.4000808@abelian.org> Date: Wed, 7 Dec 2016 13:50:56 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 In-Reply-To: <5847EC54.7090801@posteo.de> X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - porthos.netcom.co.uk X-AntiAbuse: Original Domain - blacksheep.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - abelian.org X-Get-Message-Sender-Via: porthos.netcom.co.uk: authenticated_id: catchall@abelian.org X-Authenticated-Sender: porthos.netcom.co.uk: catchall@abelian.org X-Scan-Signature: 7001055fa59a9c23b9831ea6d317a074 Subject: Re: ULF: Finally 100 mA on 2.97 kHz Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit 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-Scanned-By: MIMEDefang 2.75 Status: O X-Status: X-Keywords: X-UID: 9736 > Since 16:25 UTC i'm running a carrier again, this time > with a real 100 mA. It will be on air until 19 UTC. Nothing significant in the spectrum http://abelian.org/vlf/tmp/161206a.gif > In which bandwidth, or how many transmission hours do you > need to integrate in one peak to get a clearly, significant peak? About 1uW should give some hint in a hour and very significant peak on an 8 hour spectrum. You made a long transmission with 30mA, from 2016-06-26_13:00 to 2016-07-31_08:00, 34.79 days. No trace of the signal even with a coherent daily stacking gain of 15.4dB. Wait 58 says 0.036 fT for your ~100nW, which should have been visible in one day, say 8 hours. So something is not adding up. Maybe ERP is much lower than estimated, or the propagation near the mode 2 cut-off frequency is more attenuated or suffering a variable phase due to dispersion. Will be interesting to see how the 65km experiment works out. -- Paul Nicholson --