Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_MED,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: : mailn 1480; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id v45DHlmr018671 for ; Fri, 5 May 2017 15:17:48 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1d6d2Q-000898-Ky for rs_out_1@blacksheep.org; Fri, 05 May 2017 14:12:50 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1d6d2P-00088z-Hy for rsgb_lf_group@blacksheep.org; Fri, 05 May 2017 14:12:49 +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 4.89) (envelope-from ) id 1d6d2L-0000n3-HJ for rsgb_lf_group@blacksheep.org; Fri, 05 May 2017 14:12:48 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id 25615209C6 for ; Fri, 5 May 2017 15:12:43 +0200 (CEST) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3wKC4B3HJ8zyqC for ; Fri, 5 May 2017 15:12:42 +0200 (CEST) Message-ID: <590C7A4A.8040308@posteo.de> Date: Fri, 05 May 2017 15:12:42 +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: <15bd53dda31-14f8-1cb1c@webprd-m59.mail.aol.com> <590B9892.9010406@posteo.de> In-Reply-To: X-Scan-Signature: 49f0f587e44d6711c57b8a4e950ba850 Subject: Re: VLF: tonite on the 36km band... Content-Type: text/plain; charset=UTF-8; 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 2.75 Status: RO X-Status: X-Keywords: X-UID: 11595 Thanks Paul, all, Transmission for Paul only was meant in that way that you are probably the only one who get the necessary Eb/N0 for a decode. But now DL0AO is using a better antenna, they may also reach the threshold, providing the FFT length covers 13:44 hours... I see again that a high VLF mailing activity seems to lead to a lower LF/MF mailing activity. But why? The bandwidth isn't limited. 73, Stefan PS: > 50 % of the 100 char message is already out... Am 05.05.2017 09:56, schrieb Paul Nicholson: > > Stefan reported a problem with setting message > length in the v0.7 decoder. Now the version > is 0.7a which fixes this problem: > > http://abelian.org/ebnaut/software_ms.shtml > > Stefan wrote: > > Probably that's a transmission for Paul only: > > > f = 8270.100000 Hz > > Start time: 05.May.2017 05:30:00 UTC > > Symbol period: 10 s > > Characters: 100 > > CRC bits: 0 > > Coding 8K19A > > Needs about 5 Gbyte RAM to decode when using list length > of one million, about 7 Gbyte for two million. > > It's likely that using the 8K19A instead of the stronger > 16K21A will work better for some given available RAM, > because the small loss of coding gain in the convolutional > code can be more than made up by the use of a longer > list. > > An interesting 'feature' of longer messages is that a > false decode is often only partly false - you may find > most of the message is correct but there is a garbled > section. > > -- > Paul Nicholson > -- >