Return-Path: X-Spam-DCC: paranoid 1481; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-0.7 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, RATWARE_GECKO_BUILD,SPF_PASS autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id u9R990pe021483 for ; Thu, 27 Oct 2016 11:09:00 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1bzgbx-0001xr-O4 for rs_out_1@blacksheep.org; Thu, 27 Oct 2016 10:04:33 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1bzgbx-0001xi-Ae for rsgb_lf_group@blacksheep.org; Thu, 27 Oct 2016 10:04:33 +0100 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 1bzgbs-0005ob-0h for rsgb_lf_group@blacksheep.org; Thu, 27 Oct 2016 10:04:32 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id CF76121333 for ; Thu, 27 Oct 2016 11:04:23 +0200 (CEST) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3t4LYM3XJHz106X for ; Thu, 27 Oct 2016 11:04:23 +0200 (CEST) Message-ID: <5811C317.7000108@posteo.de> Date: Thu, 27 Oct 2016 11:04:23 +0200 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: <157b3bf43d2-111e-bfa3@webprd-a11.mail.aol.com> <0f1b59cf-e10d-1daf-125b-ad4aca471a06@gmail.com> <580205DC.80508@posteo.de> <58020BE2.1020107@posteo.de> <289454467.20161015210855@chriswilson.tv> <5808C23D.6060006@posteo.de> <580CE812.40500@posteo.de> <580CEA96.2010200@posteo.de> <4e343fa907bf9f2652ce9f25fe56d62a@smtp.hushmail.com> <580E12A9.9070309@posteo.de> <026a01d22e2e$883c9250$98b5b6f0$@comcast.net> <02d901d22e86$708649f0$5192ddd0$@comcast.net> In-Reply-To: X-Scan-Signature: b77892ad90d0261eaf071f4f6cf31464 Subject: Re: LF: Idiot's guide to receiving Ebnaut? - Tutorial part2 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit 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 2.56 on 10.1.3.11 Content-Length: 1127 Status: O X-Status: X-Keywords: X-UID: 9248 Hi Wolf, According to https://www.u-blox.com/de/history, u-blox, the company which builds the module, is coming from Switzerland. So it's not really a chinese product. :-) Just the board is most probably built (soldered) in China. 73, Stefan Am 26.10.2016 23:46, schrieb Wolfgang Büscher: > Hello Jim, > > I wouldn't give up on the Thunderbolt E yet. A double-ovenned 10 MHz > sounds intriguing, you should have a very low phase noise which other > GPSes (clocked by a cheap 'computer grade' oscillator) cannot achieve. > It will be interesting if you use the Thunderbolt to trigger a > digital oscilloscope, and measure the PPS signal from the chinese > unit at a resolution of a 10 ns or so. > > With a simple pulse-shaping network (CMOS 4093 wired as a crude 10 us > monoflop), the pulse digitized with an E-MU0202 look good enough to be > used as a timebase with SL. I will play with a modified algorithm, and > see how it compares with the edge-interpolation on the 100 ms pulse > from the Garmin - also at lower sampling rates (with sampling > intervals longer than 10 us). > > Cheers, > Wolf . > > >