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 w0CHL2Op006420 for ; Fri, 12 Jan 2018 18:21:04 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ea2vX-0006e2-Qr for rs_out_1@blacksheep.org; Fri, 12 Jan 2018 17:15:35 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ea2vV-0006dq-WB for rsgb_lf_group@blacksheep.org; Fri, 12 Jan 2018 17:15:33 +0000 Received: from resqmta-ch2-01v.sys.comcast.net ([2001:558:fe21:29:69:252:207:33]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1ea2vS-0002vk-Ra for rsgb_lf_group@blacksheep.org; Fri, 12 Jan 2018 17:15:32 +0000 Received: from resomta-ch2-14v.sys.comcast.net ([69.252.207.110]) by resqmta-ch2-01v.sys.comcast.net with ESMTP id a2uIe00nI0aB6a2vOeImam; Fri, 12 Jan 2018 17:15:26 +0000 X-DKIM-Result: Domain=comcast.net Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.net; s=q20161114; t=1515777326; bh=mHIMJXcrLHf1M0gTco8pmveImom5q8vzdZ7SvMFTfMM=; h=Received:Received:From:To:Subject:Date:Message-ID:MIME-Version: Content-Type; b=QBP7EcnXS+CbUmgYwc0BK6BhPV4YDAkRX0Gwmd6aN0L/z4nr9iUcP+a2k2ikFXTSY AQgLu13XRMJBUoi7BcPcEJI/tamWYYt++2XDtbrOlZj+L/daCuItVjb7y1aUhljj3F OV+ZlnlXiARvBqfTxw27vza7FHdRhhCzxFwx1/wkJSIGCYFZe34awtokujOXr/fxIv ngqH+7E1I+ylY1KJs2SkR4XsbH9qSV3UwRu8gqKemnARJQnK9bTxs/YsnsHXRr3vPF X2R2niJOv4l5kPi9b9mhl+xvIkX98IPCzQdkxH1ntYxwuTHMA9UAqSMLq81MuBZl0D 19LF6NKX4aIqg== Received: from Owner ([IPv6:2601:140:8500:7f9f:f173:a72f:8b1b:f5ca]) by resomta-ch2-14v.sys.comcast.net with SMTP id a2vMeGtpU9aG0a2vMeSguw; Fri, 12 Jan 2018 17:15:25 +0000 From: To: References: <2dbcd2a8-0109-41e4-c0ca-aada17f54de8@abelian.org> <5A381F2B.7000304@posteo.de> <3871624a-11dc-12b8-853c-8454840ca9ff@abelian.org> <5A398786.7000001@posteo.de> <5A398906.9000806@posteo.de> <6833b8ea-5cf8-809e-364e-a9f47e04bc44@abelian.org> <5A3D1058.2060801@posteo.de> <17640699-682a-2d4e-6c5f-8fa14d411530@abelian.org> <5A3DA439.2070503@posteo.de> <1baa9683-37de-2f96-5909-8138b10f0a8b@abelian.org> <5A43A659.9050006@posteo.de> <037a01d38031$1f453b20$5dcfb160$@comcast.net> <5A479376.2060804@posteo.de> <4ac90a6f-6a7b-5ae4-3b4a-d8cb8e153599@abelian.org> <1e63b6ca-ae5c-176a-b9fa-1f035e5cc72e@abelian .org> <015e01d384cc$e8c36270$ba4a2750$@comcast.net> <952fc558-5e93-f229-2749-855bc73b1cbc@abelian.org> <5A4FA7EA.9070107@posteo.de> <5A552648.2010809@posteo.de> <5fb5fc87-fba9-cac3-d60b-83442d4ab8a2@abelian.org> <5A58A8F9.5050701@posteo.de> In-Reply-To: <5A58A8F9.5050701@posteo.de> Date: Fri, 12 Jan 2018 12:15:14 -0500 Message-ID: <005801d38bc8$ee779210$cb66b630$@comcast.net> MIME-Version: 1.0 X-Mailer: Microsoft Outlook 14.0 Content-Language: en-us Thread-Index: AQF7CMWAEyghtRv4IneF01GITrQXvQD/WoxoAqYOlOYB/2liewG4pnGgAeh4ZlAAwqqhhQFlo2xTAxXTTB8CVc1B6QLaA2MjAfsyruQBuRR07AI+AwLwAs24bK8B16bM7AI6jpo3AghMjaoCHRAh3QFkDyvJAfYhrT0BSZ4mlgJqKgUwAimIWgeismVAAA== X-CMAE-Envelope: MS4wfLsQo+Mivdmj5an8AdnVz7piG7KWBrIiTt4X3YR0QCU13m1MfOUMz7ykuVumlg+UTxb1gu9/MoI7cSL8VGbgCgADYNHD5RsKmbsbExp1uBsuZ5vDL6e2 T07zkYg5ZC2kE5UGlGVkw9zx1gOMA2bU6+I= 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: Stefan and Paul, Excellent results; nicely done. The ratio of phase variation* Warsaw/Cumiana seems somewhat (factor of 2 or 3?) disproportionate to the Warsaw/Cumiana Eb/N0 ratio. Do you have a feeling about whether this is more likely to be attributable to timing or non-Gaussian noise or a precision limit in the processing or (ref Stefan's comment): difference in groundwave/skywave interference? [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (hvanesce[at]comcast.net) -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: ab7de7439a3fce0b74220375dc6f18e8 Subject: RE: VLF: Finally back on the 58 km band... Content-Type: text/plain; charset="UTF-8" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.3 required=5.0 tests=NO_REAL_NAME 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 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by klubnl.pl id w0CHL2Op006420 Stefan and Paul, Excellent results; nicely done. The ratio of phase variation* Warsaw/Cumiana seems somewhat (factor of 2 or 3?) disproportionate to the Warsaw/Cumiana Eb/N0 ratio. Do you have a feeling about whether this is more likely to be attributable to timing or non-Gaussian noise or a precision limit in the processing or (ref Stefan's comment): difference in groundwave/skywave interference? * day-to-day phase variation 73, Jim AA5BW -----Original Message----- From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of DK7FC Sent: Friday, January 12, 2018 7:24 AM To: rsgb_lf_group@blacksheep.org Subject: Re: VLF: Finally back on the 58 km band... Thanks Paul for the summary. These informations are very useful for me and we all get an impression about phase and SNR stability in this range of distances. It looks like the phase is quite stable, i'm happy with the results. Interestingly the phase is more stable in Cumiana than in Bielefeld. Maybe this is a groundwave/skywave interference effect. We didn't hear from Alex. Didn't he say he will be back on the 10th? I hope its all fine. 73, Stefan Am 12.01.2018 09:11, schrieb Paul Nicholson: > > Stefan wrote: > > > f = 5170.1000 Hz > > Start time: 29.Dec.2017 15:00:00 UTC Symbol period: 30 s > > Characters: 12 > > CRC bits: 20 > > Coding 16K21A > > Duration: 14:56 [hh:mm] > > Fourteen transmissions. Two decodes at Cumiana. > Problems with the uplink from Warsaw. > > Todmorden (881.2 km) > -------------------- > > 29/30 Eb/N0 +2.8 dB, S/N -26.2 dB/1Hz, phase 46.1 *Decoded* > 30/31 Eb/N0 +4.1 dB, S/N -24.9 dB/1Hz, phase 44.2 *Decoded* > 31/01 Eb/N0 +1.8 dB, S/N -27.1 dB/1Hz, phase 43.2 *Decoded* > 01/02 Eb/N0 +1.5 dB, S/N -27.5 dB/1Hz, phase 57.6 *Decoded* > 02/03 Eb/N0 -1.6 dB, S/N -30.6 dB/1Hz, phase 60.6; > 03/04 Eb/N0 -1.6 dB, S/N -30.6 dB/1Hz, phase 50.3; > 04/05 Eb/N0 0.0 dB, S/N -29.0 dB/1Hz, phase 61.3; > 05/06 Eb/N0 +1.4 dB, S/N -27.6 dB/1Hz, phase 58.3 *Decoded* > 06/07 Eb/N0 +0.1 dB, S/N -28.8 dB/1Hz, phase 56.2 *Decoded* > 07/08 Eb/N0 -2.1 dB, H-field only, phase 64.1; > 08/09 Eb/N0 -3.1 dB, S/N -32.1 dB/1Hz, phase 45.0; > 09/10 Eb/N0 -0.2 dB, S/N -26.2 dB/1Hz, phase 34.9 *Decoded* > 10/11 Eb/N0 +1.5 dB, S/N -27.5 dB/1Hz, phase 39.4 *Decoded* > 11/12 Eb/N0 +1.1 dB, S/N -27.9 dB/1Hz, phase 37.8 *Decoded* > > Bielefeld (303.8 km DL4YHF) > --------------------------- > > 29/30 Eb/N0 +8.6 dB, S/N -20.4 dB/1Hz, phase -53.5 *Decoded* > 30/31 Eb/N0 +8.3 dB, S/N -20.6 dB/1Hz, phase -52.1 *Decoded* > 31/01 Eb/N0 +8.1 dB, S/N -20.8 dB/1Hz, phase -56.3 *Decoded* > 01/02 Eb/N0 +8.4 dB, S/N -20.6 dB/1Hz, phase -47.9 *Decoded* > 02/03 Eb/N0 +4.0 dB, S/N -24.9 dB/1Hz, phase -38.1 *Decoded* > 03/04 Eb/N0 +5.6 dB, S/N -23.4 dB/1Hz, phase -46.1 *Decoded* > 04/05 Eb/N0 +8.8 dB, S/N -20.1 dB/1Hz, phase -47.0 *Decoded* > 05/06 Eb/N0 +10.4 dB, S/N -18.5 dB/1Hz, phase -41.1 *Decoded* > 06/07 Eb/N0 +11.5 dB, S/N -17.5 dB/1Hz, phase -43.2 *Decoded* > 07/08 Eb/N0 +11.0 dB, S/N -18.0 dB/1Hz, phase -37.4 *Decoded* > 08/09 Eb/N0 +8.6 dB, S/N -20.4 dB/1Hz, phase -49.1 *Decoded* > 09/10 Eb/N0 +8.4 dB, S/N -20.5 dB/1Hz, phase -50.2 *Decoded* > 10/11 Eb/N0 +9.0 dB, S/N -20.0 dB/1Hz, phase -51.4 *Decoded* > 11/12 Eb/N0 +8.3 dB, S/N -20.6 dB/1Hz, phase -41.4 *Decoded* > > Warsaw (919.3 km SQ5BPF) > ------------------------ > > 29/30 Eb/N0 -5.4 dB, S/N -34.4 dB/1Hz, phase -20.3; > 30/31 Eb/N0 -17.2 dB, S/N -46.2 dB/1Hz; > 31/01 Eb/N0 -7.8 dB, S/N -36.8 dB/1Hz, phase -44.2; > 01/02 Eb/N0 -6.1 dB, S/N -35.1 dB/1Hz, phase -36.1; > 02/03 Eb/N0 -8.2 dB, S/N -37.1 dB/1Hz, phase 2.9; > 03/04 Eb/N0 -10.2 dB, S/N -39.2 dB/1Hz, phase -33.1; > 04/05 Eb/N0 -8.1 dB, S/N -37.1 dB/1Hz, phase -3.8; > 05/06 Eb/N0 -6.4 dB, S/N -35.4 dB/1Hz, phase -44.2; > 06/07 Eb/N0 -8.1 dB, S/N -37.1 dB/1Hz, phase -22.9; > 07/08 Eb/N0 -7.5 dB, S/N -36.5 dB/1Hz, phase -20.8; > 08/09 No data from rx site, uplink off; > 09/10 Eb/N0 -9.9 dB, S/N -38.8 dB/1Hz, phase -23.3; > 10/11 No data from rx site, uplink off; > 11/12 No data from rx site, uplink off; > > All stacked: Eb/N0 +1.6 dB *Decoded* rank 11; > > Cumiana (504.6 km IK1QFK) > ------------------------- > > 29/30 Eb/N0 -5.4 dB, S/N -34.3 dB/1Hz, phase 176.7; > 30/31 Eb/N0 -1.3 dB, S/N -30.3 dB/1Hz, phase -176.2; > 31/01 Eb/N0 -4.9 dB, S/N -33.9 dB/1Hz, phase 177.4; > 01/02 No data from rx site, ADSL fault; > 02/03 No data from rx site, ADSL fault; > 03/04 No data from rx site, ADSL fault; > 04/05 Eb/N0 -1.6 dB, S/N -30.6 dB/1Hz, phase 174.5; > 05/06 Eb/N0 -1.4 dB, S/N -30.4 dB/1Hz, phase 171.1; > 06/07 Eb/N0 -1.1 dB, S/N -30.0 dB/1Hz, phase -172.8; > 07/08 Eb/N0 -2.8 dB, S/N -31.8 dB/1Hz, phase -169.2; > 08/09 Eb/N0 -5.8 dB, S/N -34.8 dB/1Hz, phase -179.3; > 09/10 Eb/N0 -1.3 dB, S/N -30.2 dB/1Hz, phase 175.7; > 10/11 Eb/N0 -0.3 dB, S/N -29.2 dB/1Hz, phase 173.6 *Decoded* > 11/12 Eb/N0 -0.1 dB, S/N -29.1 dB/1Hz, phase 174.7 *Decoded* > > First nine stacked: Eb/N0 6.8 dB *Decoded* > > -- > Paul Nicholson > -- >