Return-Path: X-Spam-DCC: paranoid 1170; 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=-0.8 required=5.0 tests=BAYES_00,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 u06MNkTX010559 for ; Wed, 6 Jan 2016 23:23:47 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1aGwPb-00020h-Sq for rs_out_1@blacksheep.org; Wed, 06 Jan 2016 22:18:35 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1aGwPb-00020Y-Hx for rsgb_lf_group@blacksheep.org; Wed, 06 Jan 2016 22:18:35 +0000 Received: from parrot.netcom.co.uk ([217.72.171.49]) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1aGwOX-0006L2-2w for rsgb_lf_group@blacksheep.org; Wed, 06 Jan 2016 22:18:34 +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 7396B3273A5 for ; Wed, 6 Jan 2016 22:07:21 +0000 (GMT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by sb.abelian.org (Postfix) with ESMTP id A9EA028A01C2 for ; Wed, 6 Jan 2016 22:16:55 +0000 (UTC) Message-ID: <568D9257.8070306@abelian.org> Date: Wed, 06 Jan 2016 22:16:55 +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: In-Reply-To: X-Scan-Signature: 5c1f37c04fc013ebbc2288fd3791d043 Subject: Re: LF: MF Ebnaut transmissions from Riccardo IW4DXW 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: 6170 Nice work! Well done to Riccardo for getting the coherent transmission working. The timing looks good and with the signal available, it'll probably do 0.1 second symbols easily. I don't have anything available to receive coherently at MF so cannot join in the fun. Perhaps someone can recommend a suitable SDR that I can clock from a 10Mhz GPSDO? Here I'm still working on CRCs and ploughing through the math to calculate code performance. Even with knowledge of the complete weight spectrum of the code, it is proving to be immensely difficult but I'm making some progress. The version of EbNaut now on the website has a selectable CRC length and some improvements that I mentioned a week ago, but I recommend staying with 16 bit CRC for now. -- Paul Nicholson --