Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id vB1MfN4i009112 for ; Fri, 1 Dec 2017 23:41:25 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eKtul-0008J9-UP for rs_out_1@blacksheep.org; Fri, 01 Dec 2017 22:36:11 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eKtul-0008J0-CS for rsgb_lf_group@blacksheep.org; Fri, 01 Dec 2017 22:36:11 +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 4.89) (envelope-from ) id 1eKtui-0006vP-MO for rsgb_lf_group@blacksheep.org; Fri, 01 Dec 2017 22:36:10 +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=0szd2QBzA07lnS5w2NktkpkCKIPW6sVJmPAAkBE0yH0=; b=hYcfX2KUGDPfoiFTmGsX0+1zKx Tqw5TxSBA7U+gIbckJI65hYZK+naK8xFqeGJ4+UV5kGhIyxLw8ISRdV0aRxha8lF2SZFz4AmL2iO7 kgXzYF7p9JfiMuoFZyz9yS4H51WendqHWxkBazWNql6kW/FZcoTeibOwQiGAY0iwfOso=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:42677 helo=pn.abelian.org) by porthos.netcom.co.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1eKtug-0007eT-Th for rsgb_lf_group@blacksheep.org; Fri, 01 Dec 2017 22:36:06 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 424EB40046D for ; Fri, 1 Dec 2017 22:36:06 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: <1600ece86fd-171b-256f@webjas-vac163.srv.aolmail.net> <5A209D96.5070807@posteo.de> <5A21657B.7030308@posteo.de> From: Paul Nicholson Message-ID: <50a2fa47-9e6b-d57c-be46-1a63017e211c@abelian.org> Date: Fri, 1 Dec 2017 22:36:06 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US 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-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: The 17470.1 Hz signal from DK7FC is quite disappointing here in Todmorden. I was expecting lots of ERP and a great S/N. Daytime S/N is between -28dB and -20dB in 1Hz. Daytime phase repeats within about +/- 25 deg. [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: e90dcb17768c7e768f13e0721cc1c0c7 Subject: Re: VLF: DK7FC close to SAQ Content-Type: text/plain; charset=utf-8; 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=0.9 required=5.0 tests=FROM_ENDS_IN_NUMS 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 The 17470.1 Hz signal from DK7FC is quite disappointing here in Todmorden. I was expecting lots of ERP and a great S/N. Daytime S/N is between -28dB and -20dB in 1Hz. Daytime phase repeats within about +/- 25 deg. Nighttime, S/N is poor, best is about -29 dB and about half the nights it is not significant above noise. Where I can measure it, the night phase repeats too, with about 200 degrees of lag compared with daytime phase. For comparison, DK7FC at 8270 is usually around -14 to -18 dB at night, and at 6470 the daytime S/N has been -18dB in 1Hz. I'm not brave enough to estimate the flux density or field strength just yet, need to do some calibration at this frequency. -- Paul Nicholson --