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 v23EEkOi028296 for ; Fri, 3 Mar 2017 15:14:48 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cjnuj-0007bN-Uw for rs_out_1@blacksheep.org; Fri, 03 Mar 2017 14:10:33 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cjnuj-0007bE-9x for rsgb_lf_group@blacksheep.org; Fri, 03 Mar 2017 14:10:33 +0000 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 4.87) (envelope-from ) id 1cjnug-00080t-Lv for rsgb_lf_group@blacksheep.org; Fri, 03 Mar 2017 14:10:32 +0000 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 v23EAp17028290 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 3 Mar 2017 15:10:51 +0100 Received: from localhost (sq5bpf@localhost) by mailn.lipkowski.org (8.14.4/8.14.4/Submit) with ESMTP id v23EAoaZ028286 for ; Fri, 3 Mar 2017 15:10:50 +0100 X-Authentication-Warning: mailn.lipkowski.org: sq5bpf owned process doing -bs Date: Fri, 3 Mar 2017 15:10:50 +0100 (CET) From: Jacek Lipkowski To: rsgb_lf_group@blacksheep.org Message-ID: 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: 1f795a2ee1ecd56682b47ad11969b3d3 Subject: LF: phase shift compensation question 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: RO X-Status: X-Keywords: X-UID: 10768 would it be possible to use the phase shift from a strong VLF signal to compensate the phase shift for an amateur VLF transmitter? for longer transmissions (when the ionosphere height changes etc) over big distances etc could also work for LF, like receiving DCF39 (which is probably very stable, even if it's not intended for timing) on 139kHz in Australia to measure the phase shift of the path from Germany, so that we can compensate the changing phase shift of an amateur transmission on 137kHz, so that we could use a long transmission time in ebnaut. would that work? and would it be worth it? VY 73 Jacek / SQ5BPF