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 v9RC7NUS030498 for ; Fri, 27 Oct 2017 14:07:25 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1e83DM-0006jk-S4 for rs_out_1@blacksheep.org; Fri, 27 Oct 2017 12:54:16 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1e83DL-0006jb-Pb for rsgb_lf_group@blacksheep.org; Fri, 27 Oct 2017 12:54:15 +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 1e83DJ-0005uS-43 for rsgb_lf_group@blacksheep.org; Fri, 27 Oct 2017 12:54:14 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id 11FD620CBB for ; Fri, 27 Oct 2017 13:54:08 +0200 (CEST) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3yNj2k0Qwsz10JS for ; Fri, 27 Oct 2017 13:54:05 +0200 (CEST) Message-ID: <59F31E5A.5020602@posteo.de> Date: Fri, 27 Oct 2017 13:54:02 +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: <15f5559fe36-c0b-25e91@webjas-vac031.srv.aolmail.net> <59F1F06C.6070805@posteo.de> <4c256fa8-678f-9017-19c6-b196247de591@abelian.org> In-Reply-To: <4c256fa8-678f-9017-19c6-b196247de591@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: ...it was a bit confusing last evening. 20 minutes before the start i thought that it may take 10 days or longer when using night transmissions. Your information below came to late, i did not check the emails during the last 15 minutes before t=0 :-) If we can expect 13 dB for a single character, we should be able to manage a 100 charcter decode after 4...5 nights. That's very fine. Actually i wanted to start transmissions for RC4HAA this weekend but now i started building a new VLF PA, since the one i'm using now has been quite on the limit at 700 mA antenna current on 8270 Hz. During that time we can pass that message through. So, now, we lost a night but never mind. The transmission starts as announced, just a day late. I would prefer 16K21A but you know there have been problems with SpecLab reading out the symbols in a 4s interval from a txt file containing > 10000 rows. I could split the file into two however. But that may be a task for the next time. [...] Content analysis details: (-0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-Scan-Signature: 1708620d3ce65bee0beaaede7929769a Subject: Re: VLF: 300 mA on 5170 Hz 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 ...it was a bit confusing last evening. 20 minutes before the start i thought that it may take 10 days or longer when using night transmissions. Your information below came to late, i did not check the emails during the last 15 minutes before t=0 :-) If we can expect 13 dB for a single character, we should be able to manage a 100 charcter decode after 4...5 nights. That's very fine. Actually i wanted to start transmissions for RC4HAA this weekend but now i started building a new VLF PA, since the one i'm using now has been quite on the limit at 700 mA antenna current on 8270 Hz. During that time we can pass that message through. So, now, we lost a night but never mind. The transmission starts as announced, just a day late. I would prefer 16K21A but you know there have been problems with SpecLab reading out the symbols in a 4s interval from a txt file containing > 10000 rows. I could split the file into two however. But that may be a task for the next time. 73, Stefan PS: The calculator page does not allow to calculate 8K23A although it is available in ebnaut-tx.exe Am 26.10.2017 19:41, schrieb Paul Nicholson: > > > What is better, day or night? > > And what is the SNR difference on our path? > > I've been going over the figures, referring carrier > and EbNaut signals to 1Hz BW for comparison. > > Night is on average slightly better than day: > > Combined H + (new) E: day = -27.3 dB, night = -26.7 dB > > > I would prefer the nights > > Here too, so I can do experiments during the days. > > -- > Paul Nicholson > -- >