Return-Path: X-Spam-DCC: paranoid 1290; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-0.7 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, RATWARE_GECKO_BUILD autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id t6L8ogMM005673 for ; Tue, 21 Jul 2015 10:50:42 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZHT9g-0008NC-Hf for rs_out_1@blacksheep.org; Tue, 21 Jul 2015 09:44:04 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZHT9g-0008N3-0M for rsgb_lf_group@blacksheep.org; Tue, 21 Jul 2015 09:44:04 +0100 Received: from mx02.posteo.de ([89.146.194.165]) by relay1.thorcom.net with esmtps (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.85) (envelope-from ) id 1ZHT8g-0003B8-Su for rsgb_lf_group@blacksheep.org; Tue, 21 Jul 2015 09:44:02 +0100 Received: from dovecot04.posteo.de (unknown [185.67.36.27]) by mx02.posteo.de (Postfix) with ESMTPS id 1BBA425C0091 for ; Tue, 21 Jul 2015 10:42:45 +0200 (CEST) Received: from mail.posteo.de (localhost [127.0.0.1]) by dovecot04.posteo.de (Postfix) with ESMTPSA id 3mbD2Y5Y3MzFpW3 for ; Tue, 21 Jul 2015 10:42:45 +0200 (CEST) Message-ID: <55AE0605.9030200@posteo.de> Date: Tue, 21 Jul 2015 10:42:45 +0200 From: DK7FC User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <14333894.20150720161829@chriswilson.tv> <776311A518F6F642962EC561A9184090D70A6C8546@THSONEP02CMB01P.one-02-priv.grp> In-Reply-To: <776311A518F6F642962EC561A9184090D70A6C8546@THSONEP02CMB01P.one-02-priv.grp> X-Scan-Signature: 87966b345956c8ef3389b993f6a18f4e Subject: LF: MF diurnal noise background Content-Type: text/plain; charset=ISO-8859-1; 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 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 3677 Hi all, Yesterday the conds on MF were very good, low QRN levels and good propagation. On my remote grabber i'm running a slow scrolling spectrogram showing the whole 630m band over the last 20 hours. For example, see this image: https://dl.dropboxusercontent.com/u/19882028/MF/MFwideslow20JUL2015.jpg Comparing WSPR reports to other RX stations (including my own, in the city), it appears that this site performs very well! However, there is still a lot of man made noise visible day and night. Some QRM traces are stable all the time, others just appear when the band opens. In the spectrogram one can see when the band opens and closes. Currently this is arround 18:30...04:00 UTC. And, it appears that the background noise at night is at the same level as in daylight, at least when QRN levels are low. Does this look about similar on your side? And does it mean there is still much room for system improvements by choosing a different location?? 73, Stefan