Return-Path: X-Spam-DCC: paranoid 1356; 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=-0.5 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_RCVD_HELO,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 u3UBUZG8006808 for ; Sat, 30 Apr 2016 13:30:35 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1awT3K-0004ol-Aj for rs_out_1@blacksheep.org; Sat, 30 Apr 2016 12:27:14 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1awT3K-0004oc-1Z for rsgb_lf_group@blacksheep.org; Sat, 30 Apr 2016 12:27:14 +0100 Received: from parrot.netcom.co.uk ([217.72.171.49]) by relay1.thorcom.net with esmtp (Exim 4.87) (envelope-from ) id 1awT3I-00026v-FI for rsgb_lf_group@blacksheep.org; Sat, 30 Apr 2016 12:27:12 +0100 Received: from pn.abelian.org (i-194-106-52-83.freedom2surf.net [194.106.52.83]) by parrot.netcom.co.uk (Postfix) with ESMTP id BA38C3273E4 for ; Sat, 30 Apr 2016 12:25:59 +0100 (BST) Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id DA04A4000D7 for ; Sat, 30 Apr 2016 11:27:11 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: <57237FB9.2060507@posteo.de> <8D3705FBF0E442D-628-9A0506@webmail-vm001.sysops.aol.com> <5723C259.3090800@abelian.org> <5723C76E.70002@posteo.de> From: Paul Nicholson Message-ID: <5724968F.1030904@abelian.org> Date: Sat, 30 Apr 2016 11:27:11 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 In-Reply-To: <5723C76E.70002@posteo.de> X-Scan-Signature: bb61bee384896e075004ae5ec954ddd2 Subject: Re: VLF: EbNaut transmission on 8270.1 Hz again and again Content-Type: text/plain; charset=utf-8; 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 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 7947 > Just 4 hours are gone now, i can't await it! 20 hours now, and I ran LWPC which predicts only a 35 degree phase change between day and night. If that works out, then I won't need to do any elaborate diurnal phase compensation, it is well within the phase search range of the decoder. > What about the phase of DHO38 Shows a 180 phase shift between midday and midnight. If we estimate the phase change to reduce in proportion to the frequency, we would expect 67 degrees at 8.27 kHz. Still within the range of the phase search. > For slower modes (taking more then 12 hours), could it be > useful to insert non-keyed sections to make a phase check > each 2 hours or so? Maybe, but it would spoil the Eb/N0 capability of the mode. -- Paul Nicholson --