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: : mailn 1480; Body=2 Fuz1=2 Fuz2=2 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 v0TCeAJP032037 for ; Sun, 29 Jan 2017 13:40:11 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cXojD-00085Q-OG for rs_out_1@blacksheep.org; Sun, 29 Jan 2017 12:37:07 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cXojD-00085H-CA for rsgb_lf_group@blacksheep.org; Sun, 29 Jan 2017 12:37:07 +0000 Received: from mout02.posteo.de ([185.67.36.66]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.87) (envelope-from ) id 1cXojA-0004cB-S1 for rsgb_lf_group@blacksheep.org; Sun, 29 Jan 2017 12:37:06 +0000 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id CB484207AD for ; Sun, 29 Jan 2017 13:37:03 +0100 (CET) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3vBBqM3M1szyvF for ; Sun, 29 Jan 2017 13:37:03 +0100 (CET) Message-ID: <588DE1EE.3050408@posteo.de> Date: Sun, 29 Jan 2017 13:37:02 +0100 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: <159c6d4aa99-2cc9-11356@webprd-m36.mail.aol.com> <5884E0D8.1090102@abelian.org> <5885FBEE.3060408@posteo.de> <58861BDF.8010605@posteo.de> <58875792.7020302@posteo.de> <58879804.7010301@abelian.org> <5887ACEB.2000207@posteo.de> <5888EEDA.6070308@abelian.org> In-Reply-To: <5888EEDA.6070308@abelian.org> X-Scan-Signature: 086f3faad0220c9ae57a7913e711a86d Subject: Re: ULF: EbNaut over 3 wavelengths on ULF 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 2.75 Status: RO X-Status: X-Keywords: X-UID: 10392 Hi Paul, Did you get some more improvements? From the known decoded EbNaut messages, what was the SNR at Renato or on your side? Your recent sferic analysis seems to state that no unexpected propagation effects are present, e.g. groundwave/skywave cancellation over wide areas and times? So it would be the plain signal attenuation and local QRN/QRM situation that affects the decode. How many stacked daily 2.97 kHz transmissions do i need to get a decode of 5 characters in Cumiana and/or Todmorden? What's your estimation? ...i would like to continue on the 101 km band again... 73, Stefan Am 25.01.2017 19:30, schrieb Paul Nicholson: > > f = 2970.000000 Hz > > Start time: 25.Jan.2017 07:00:00 UTC > > Symbol period: 30 s > > Characters: 5 > > CRC bits: 16 > > Coding 16K25A > > Decoded at Bielefeld via DL4YHF (303.8km). Copied 'DK7FC' with > Eb/N0 +4.5 dB and constant reference phase. > > S/N 19.1 dB in 29.8 uHz, -60.1 dB in 2.5kHz. > > I'm still working on the recordings from the weekend. Gained a further > 3dB by using very strong hum filtering, a threshold only 1.5 times the > mean amplitude and narrow notches. Enough to suppress not just the > harmonics but also the sidebands of the harmonics. Still no trace > here in Todmorden - yet. Still some permutations of polarisation > and azimuth to try.