Return-Path: <owner-rsgb_lf_group@blacksheep.org> 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=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 v0PKEInO019288 for <sq5bpf@lipkowski.org>; Wed, 25 Jan 2017 21:14:19 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cWTtG-0007WA-5I for rs_out_1@blacksheep.org; Wed, 25 Jan 2017 20:09:58 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cWTtF-0007W1-MN for rsgb_lf_group@blacksheep.org; Wed, 25 Jan 2017 20:09:57 +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 <selberdenken@posteo.de>) id 1cWTtD-0006qz-5V for rsgb_lf_group@blacksheep.org; Wed, 25 Jan 2017 20:09:56 +0000 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id B2D4520957 for <rsgb_lf_group@blacksheep.org>; Wed, 25 Jan 2017 21:09:53 +0100 (CET) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3v7x3j0n9Nz105p for <rsgb_lf_group@blacksheep.org>; Wed, 25 Jan 2017 21:09:53 +0100 (CET) Message-ID: <58890610.2060309@posteo.de> Date: Wed, 25 Jan 2017 21:09:52 +0100 From: DK7FC <selberdenken@posteo.de> 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: 290c8768709872f914a4ca71ad6bfe49 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: 10335 Hi Paul, (i updated the subject title) 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. Just excellent! Thanks for working out the decode! My call passed over 3 wavelengths on ULF, that's a dream! I am sure we will manage even more. Very interesting to see the high Eb/N0 relative to yesterday. From the calculator it should have been weaker. And the QRN didn't look much lower than yesterday, at least from here. Some there's a relatively high uncertainty down there, and the risk of getting no decode when coming to close to the limit. The stacking is an advantage again. > 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. Am 23.01.2017 18:52, schrieb Paul Nicholson: > Still no trace of the signal here. But tweaking the blanker > isn't going to go from 'no trace' to 'significant detection'. 3 dB is very significant! Congrats to that. It will also help to get better results from Renatos data. But as far as i remember he is offering the stream with the blanker already applied. We could ask him to disable it temporarily, if that helps. If he knows what we're trying, he will do it i expect :-) > We are having fun with this! Constantly pushing at the limits. Oh yes, and also a lot to learn about the optimisation work for the different bands. 73, Stefan