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 w1B6RBhr006633 for ; Sun, 11 Feb 2018 07:27:13 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ekkuu-0002Dp-T0 for rs_out_1@blacksheep.org; Sun, 11 Feb 2018 06:15:12 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ekkut-0002Dg-Sy for rsgb_lf_group@blacksheep.org; Sun, 11 Feb 2018 06:15:11 +0000 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 1ekkur-00005S-4T for rsgb_lf_group@blacksheep.org; Sun, 11 Feb 2018 06:15:10 +0000 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:References:Reply-To:To:From:Subject:Sender: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=lwI235AlsPCRqD1uTNahYXxfADJK+/VF8fzC7usxYsQ=; b=TU5F5QJz3JiadBADlzJqSnEnbj 0O2QRC58fNQV+bjn+6Ebz1VqgNueCgUldqxUuXIK7UqALUMsRGAsziIQPpDUd1qjtA1M+5j4fPeGO nzFm6LCtt+dlEvr4VQZ9ciwfNTJRECoAJ8k5nDUDicKEaxrSk08+YxP33SDha2TLHJR0=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:50271 helo=pn.abelian.org) by porthos.netcom.co.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89_1) (envelope-from ) id 1ekkup-0001nJ-9p for rsgb_lf_group@blacksheep.org; Sun, 11 Feb 2018 06:15:07 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id AA4F2400643 for ; Sun, 11 Feb 2018 06:15:06 +0000 (UTC) From: Paul Nicholson To: rsgb_lf_group@blacksheep.org References: <7dced87f-1e6e-0549-7693-2ebd0c19a630@abelian.org> Message-ID: <71cf4a65-9285-df46-15cd-25c342777532@abelian.org> Date: Sun, 11 Feb 2018 06:15:06 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 In-Reply-To: <7dced87f-1e6e-0549-7693-2ebd0c19a630@abelian.org> Content-Language: en-US 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-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: A bit of an update after overnight run. The PPS jitter is often dipping down to 17nS which is the best I've ever seen out of a PPS timing system. Amazing considering it's just spread out over the bench in the office so is prey to electrical noise and air drafts and the GPS antenna has a poor view of the sky. [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 87966b345956c8ef3389b993f6a18f4e Subject: Re: LF: u-blox NEO-M8T timing GPS Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=FROM_ENDS_IN_NUMS 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 A bit of an update after overnight run. The PPS jitter is often dipping down to 17nS which is the best I've ever seen out of a PPS timing system. Amazing considering it's just spread out over the bench in the office so is prey to electrical noise and air drafts and the GPS antenna has a poor view of the sky. I don't think its using Galileo right now, only GPS and GLONASS - there's some settings I have to tweak. The USB timing messages are giving a bit of a problem, arriving late and with high jitter which is causing ntpd to struggle. I've not seen that with any other u-blox GPS. I'm investigating that now. -- Paul Nicholson --