Return-Path: 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 autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: EATSERVER: mailn 1166; Body=3 Fuz1=3 Fuz2=3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id v4PN2IDn011724 for ; Fri, 26 May 2017 01:02:19 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1dE1gt-00085l-Vo for rs_out_1@blacksheep.org; Thu, 25 May 2017 23:57:11 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1dE1fb-00085c-Ht for rsgb_lf_group@blacksheep.org; Thu, 25 May 2017 23:55:51 +0100 Received: from lethe.lipkowski.org ([178.32.151.135] helo=lipkowski.org) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1dE1fU-0002ZH-FI for rsgb_lf_group@blacksheep.org; Thu, 25 May 2017 23:55:45 +0100 Received: from mailn.lipkowski.org (localhost [127.0.0.1]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id v4PMu6Jb011680 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 26 May 2017 00:56:06 +0200 Received: from localhost (sq5bpf@localhost) by mailn.lipkowski.org (8.14.4/8.14.4/Submit) with ESMTP id v4PMu5nl011676 for ; Fri, 26 May 2017 00:56:05 +0200 X-Authentication-Warning: mailn.lipkowski.org: sq5bpf owned process doing -bs Date: Fri, 26 May 2017 00:56:05 +0200 (CEST) From: Jacek Lipkowski To: rsgb_lf_group@blacksheep.org In-Reply-To: <5927422B.2000608@posteo.de> Message-ID: References: <579355A36AEE9D4FA555C45D556003AB8FDD9B58@servigilant.vigilant.local> <10bf8134-0330-03c1-c7be-02b6a0391aa3@abelian.org> <1fb38e09-2adf-bdb8-1e28-5064ef604d2c@abelian.org> <17af4668-083c-ea04-9622-dbb1de768f2b@abelian.org> <59233AC1.7040707@posteo.de> <592342DF.2060405@posteo.de> <592467CA.4000604@posteo.de> <1cda44e5-18bc-b346-315a-f838065d8ea4@abelian.org> <592564F7.4060901@posteo.de> <5926ECE3.9030201@posteo.de> <5927422B.2000608@posteo.de> User-Agent: Alpine 2.11 (DEB 23 2013-08-11) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.75 X-Scanned-By: MIMEDefang 2.75 on 10.1.3.10 X-Scan-Signature: 5c1f37c04fc013ebbc2288fd3791d043 Subject: Re: VLF: EbNaut tonite Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed 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 Status: O X-Status: X-Keywords: X-UID: 11768 On Thu, 25 May 2017, DK7FC wrote: > Hmm maybe you can build a RX loop and build a software cardioid to get some > gain?! 8.27 kHz could be enough far away from the mains QRM... my antenna is in the middle of Warsaw. i live in an old socialist apartment complex (steel-reinforced concrete etc), and unfortunately only e-field antennas work here, because the qrm from my neighbours is screened by the building. b-field antennas pick up too much qrm here, and this effect is getting worse every year (in 2005 i could pick up SAQ with a loop on my balcony, now i see a trace, but can't decode it). maybe someday i can setup a rx station far away from civilisation, and this will have crossed loops and an e-field antenna, but for now i have to make the best of what i have. VY 73 Jacek / SQ5BPF