Return-Path: X-Spam-DCC: paranoid 1233; 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=-0.5 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 u2EIJkCe017069 for ; Mon, 14 Mar 2016 19:19:46 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1afX1P-0006he-AY for rs_out_1@blacksheep.org; Mon, 14 Mar 2016 18:15:15 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1afX1O-0006hV-IC for rsgb_lf_group@blacksheep.org; Mon, 14 Mar 2016 18:15:14 +0000 Received: from parrot.netcom.co.uk ([217.72.171.49]) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1afX1L-0005jQ-66 for rsgb_lf_group@blacksheep.org; Mon, 14 Mar 2016 18:15:13 +0000 Received: from sb.abelian.org (i-194-106-52-83.freedom2surf.net [194.106.52.83]) by parrot.netcom.co.uk (Postfix) with ESMTP id 903203273EB for ; Mon, 14 Mar 2016 18:15:02 +0000 (GMT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by sb.abelian.org (Postfix) with ESMTP id 50A4628A01FB for ; Mon, 14 Mar 2016 18:15:09 +0000 (UTC) Message-ID: <56E6FFAD.7080804@abelian.org> Date: Mon, 14 Mar 2016 18:15:09 +0000 From: Paul Nicholson User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130329 Thunderbird/17.0.5 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <5ef785f5c0d5425ebb3970a52fbf1eb3@kabelmail.de> In-Reply-To: <5ef785f5c0d5425ebb3970a52fbf1eb3@kabelmail.de> X-Scan-Signature: 046f068074e745d5c60ca47deee9b503 Subject: Re: LF: 8270Hz 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 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 7350 Uwe wrote: > start 2016-03-14 03:00:00 > coding 8K19A > CRC16 > period 10.0 > chars 19 > duration 03:17:20:00 Got that one. Eb/N0 = 1.2dB calculated from 31.3% BER. Measured carrier S/N gives Eb/N0 = 1.2dB also. Constant phase. Decode time 13 seconds. 55% of channel capacity. The S/N corresponds to -53dB in 2.5kHz bandwidth after sferic blanking. Somewhere around -70dB before the blanker. A nice result Uwe! Here's the symbol error map for that message http://abelian.org/vlf/tmp/160314a.gif Each red line represents a symbol error. The errors look quite evenly spread. I was wondering if the tail end of the signal was caught by the dawn terminator and it looks like it suffers a bit in the last 200 symbols. > can I get somehow your 8270Hz .WAV file from today > 02:59:00 to 06:18:00 ? No problem, I'll produce a wav file, I guess the header needs to be set up for ebnaut-rx. -- Paul Nicholson --