Return-Path: X-Spam-DCC: paranoid 1233; Body=3 Fuz1=3 Fuz2=3 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-0.5 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_RCVD_HELO,RATWARE_GECKO_BUILD 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 u0JJ9u5e028706 for ; Tue, 19 Jan 2016 20:09:56 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1aLbai-0007sQ-Gw for rs_out_1@blacksheep.org; Tue, 19 Jan 2016 19:05:20 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1aLbai-0007sH-8w for rsgb_lf_group@blacksheep.org; Tue, 19 Jan 2016 19:05:20 +0000 Received: from brian.netcom.co.uk ([217.72.171.64]) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1aLbZg-0005Ln-61 for rsgb_lf_group@blacksheep.org; Tue, 19 Jan 2016 19:05:19 +0000 Received: from sb.abelian.org (i-194-106-52-83.freedom2surf.net [194.106.52.83]) by brian.netcom.co.uk (Postfix) with ESMTP id D049B320078 for ; Tue, 19 Jan 2016 18:43:22 +0000 (GMT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by sb.abelian.org (Postfix) with ESMTP id 1B64428A0219 for ; Tue, 19 Jan 2016 19:03:58 +0000 (UTC) Message-ID: <569E889D.2030704@abelian.org> Date: Tue, 19 Jan 2016 19:03:57 +0000 From: Paul Nicholson User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130106 Thunderbird/17.0.2 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <1df6b621dbb94ef9aafe7d3acfece171@kabelmail.de> <569E7AD3.30808@posteo.de> In-Reply-To: X-Scan-Signature: 046f068074e745d5c60ca47deee9b503 Subject: Re: LF: 8270Hz/SQ5BPF Content-Type: text/plain; charset=ISO-8859-1; 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 2.56 on 10.1.3.10 Status: RO X-Status: X-Keywords: X-UID: 6413 Andy wrote: > if the signal wason air just for that period > of eight hours, then the accuracy can only ever > be stated / measured to the nearest 0.000035Hz Depends on the available S/N. Give me half a cycle and you can have 20 digits... if the S/N is high enough. Stefan wrote: > Can you confirm you were on air at > 8270.000000000000000000000 Hz From 02:00 to 05:00 the average frequency was 8269.9999992 Hz +/- 0.1uHz. Uwe wrote: > so no decode, Paul? No decode. The signal was strong enough, so I guess something upset the phase. The carrier after the message was ok. Jacek wrote: > (see attached spectrogram). You're not using vttime to correct for the soundcard frequency offset and drift. You need to put a shaped pulse-per-second into the 2nd channel of your soundcard, which vttime will use to resample the signal to an exact rate. -- Paul Nicholson --