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 v9NADCV3014699 for ; Mon, 23 Oct 2017 12:13:15 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1e6Zec-0004HI-8f for rs_out_1@blacksheep.org; Mon, 23 Oct 2017 11:08:18 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1e6Zeb-0004H9-O1 for rsgb_lf_group@blacksheep.org; Mon, 23 Oct 2017 11:08:17 +0100 Received: from mout02.posteo.de ([185.67.36.66]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1e6ZeT-000139-VD for rsgb_lf_group@blacksheep.org; Mon, 23 Oct 2017 11:08:16 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id 4C2D720985 for ; Mon, 23 Oct 2017 12:08:09 +0200 (CEST) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3yLBtH6FDwz108w for ; Mon, 23 Oct 2017 12:08:07 +0200 (CEST) Message-ID: <59EDBF87.1080206@posteo.de> Date: Mon, 23 Oct 2017 12:08:07 +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: <4273a2ab-787c-d909-e7d0-d21db21ba18c@n1bug.com> <322c619f-6543-8ad4-5b0a-9a42f098467b@n1bug.com> <59ECC561.9040902@posteo.de> <5b388385-8cea-31e1-db86-be153479f53c@abelian.org> <59EDA8AE.1040501@posteo.de> In-Reply-To: X-Spam-Score: 1.6 (+) 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: Am 23.10.2017 11:06, schrieb Paul Nicholson: > > > What about my recent EbNaut night time transmissions? > > Getting about +10 dB Eb/N0 on new E-field and about +6 dB Eb/N0 > on H-field. Excellent. So E+H could be 12 dB. Based on the S/N reports from your last email we could manage to pass the 100 character message on 5170 Hz in 4...5 days, e.g. http://abelian.org/ebnaut/calc.php?sndb=16&snbws=&snmps=12600&code=8K21&sp=7&crc=8&nc=100&submit=Calculate which is still quite comfortable :-) [...] Content analysis details: (1.6 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 1.6 SUBJ_ALL_CAPS Subject is all capitals X-Scan-Signature: 5c335215f1b3de26d890ee84d49616ce Subject: Re: VLF: VO1NA 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=0.0 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 Am 23.10.2017 11:06, schrieb Paul Nicholson: > > > What about my recent EbNaut night time transmissions? > > Getting about +10 dB Eb/N0 on new E-field and about +6 dB Eb/N0 > on H-field. Excellent. So E+H could be 12 dB. Based on the S/N reports from your last email we could manage to pass the 100 character message on 5170 Hz in 4...5 days, e.g. http://abelian.org/ebnaut/calc.php?sndb=16&snbws=&snmps=12600&code=8K21&sp=7&crc=8&nc=100&submit=Calculate which is still quite comfortable :-) > An unusual message, though. Thought it might be a false > decode, but it's equally false on both nights? There are not many useful 1 character messages, so my creativity comes to an end quickly :-) Equal messages are a good sign though :-) > > > There have been discussions about pure copper into soil, > > at least for transmit systems. > > If it degrades over time to produce noise, I would not be > able to tell! Perhaps the next new rx will be a differential > probe... There are a lot of people here who have experience with ground rod materials on low frequencies. The question is if they are reading this and want to comment... DF3LP is running a differential probe and has problised a design some years ago. 73, Stefan