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,T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: dcc1: mailn 1182; 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 v5NAa3CF022617 for ; Fri, 23 Jun 2017 12:36:04 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1dOLs2-0001dg-R8 for rs_out_1@blacksheep.org; Fri, 23 Jun 2017 11:31:22 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1dOLs2-0001dX-1X for rsgb_lf_group@blacksheep.org; Fri, 23 Jun 2017 11:31:22 +0100 Received: from porthos.netcom.co.uk ([217.72.171.73]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1dOLrz-0006N3-AE for rsgb_lf_group@blacksheep.org; Fri, 23 Jun 2017 11:31:20 +0100 X-DKIM-Result: Domain=abelian.org Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=abelian.org ; s=default; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: MIME-Version:Date:Message-ID:From:References:To:Subject:Sender:Reply-To:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=3v15CJFqLgRvlPYVi2UbwaEGVpGLaN26pqAexV3ezv4=; b=ijb4BfD2D30cfnR0xt+2u8zmpq RNnZAetZmVkSKr5fVKHItcZSqHcgkdoi85SP6iC4tQXjwFtr17hJCAU2OtCAg2EFOqf/+6taa/T3k yyZDhCipGxRpuScEWP1lwJqRZHY4vCTDfz9+XKz0FEdVsY0twZWlMWk0eCyiXGYuSZrk=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:46686 helo=pn.abelian.org) by porthos.netcom.co.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1dOLry-0002IY-Jd for rsgb_lf_group@blacksheep.org; Fri, 23 Jun 2017 11:31:18 +0100 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 0079940070D for ; Fri, 23 Jun 2017 10:31:17 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: From: Paul Nicholson Message-ID: <2757418b-324f-894c-4182-80ec90cb57aa@abelian.org> Date: Fri, 23 Jun 2017 10:31:17 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 MIME-Version: 1.0 In-Reply-To: X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - porthos.netcom.co.uk X-AntiAbuse: Original Domain - blacksheep.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - abelian.org X-Get-Message-Sender-Via: porthos.netcom.co.uk: authenticated_id: catchall@abelian.org X-Authenticated-Sender: porthos.netcom.co.uk: catchall@abelian.org X-Scan-Signature: 5c335215f1b3de26d890ee84d49616ce Subject: Re: LF: hunting IK1HGI on LF 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: 12054 Domenico wrote: > IK1HGI ...png Definitely something there. > vtread -v -T2017-06-22_23:40,+16000 ... > ... vtnspec -v -f 1493 -w0.02 -r6.25e-5 Will the received phase at LF be stable for 16000 seconds? If it isn't, the coherent integration will suffer a loss. Maybe try some non-coherent average. Example, if you think the phase is stable up to 30 minutes you could try: vtnspec -v -f 1493 -w0.2 -r5.555e-4 -a The -a averages (non-coherently) multiple 30 minute spectra, which is where the -r5.555e-4 comes from and I've increased the -w too. The log messages show an 'nfinal' which is the number of spectra averaged, and the output file only has two columns, so plot ($1 - 1500):2 Maybe you get a better S/N from Tony. -- Paul Nicholson --