Return-Path: X-Spam-DCC: paranoid 1290; 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=-0.7 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 u31Cmf6e012344 for ; Fri, 1 Apr 2016 14:48:41 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1alyRP-0005yB-7m for rs_out_1@blacksheep.org; Fri, 01 Apr 2016 13:44:43 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1alyRO-0005y2-VW for rsgb_lf_group@blacksheep.org; Fri, 01 Apr 2016 13:44:42 +0100 Received: from mout01.posteo.de ([185.67.36.65]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.86) (envelope-from ) id 1alyRN-0001tB-EP for rsgb_lf_group@blacksheep.org; Fri, 01 Apr 2016 13:44:41 +0100 Received: from dovecot03.posteo.de (dovecot03.posteo.de [172.16.0.13]) by mout01.posteo.de (Postfix) with ESMTPS id B4A0920A66 for ; Fri, 1 Apr 2016 14:44:40 +0200 (CEST) Received: from mail.posteo.de (localhost [127.0.0.1]) by dovecot03.posteo.de (Postfix) with ESMTPSA id 3qc1L04fKGz5vNB for ; Fri, 1 Apr 2016 14:44:40 +0200 (CEST) Message-ID: <56FE6D38.1070505@posteo.de> Date: Fri, 01 Apr 2016 14:44:40 +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: <5699ee15d25b401f9991de9ad5c199ea@kabelmail.de> <56FE60A4.7000908@abelian.org> In-Reply-To: <56FE60A4.7000908@abelian.org> X-Scan-Signature: 87966b345956c8ef3389b993f6a18f4e Subject: Re: VLF: 8270: now 8269.990Hz 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: 7544 Hi Paul, Am 01.04.2016 13:51, schrieb Paul Nicholson: > For 2 char messages with 16 bit CRC, the max useful list > length is probably around 1k but I don't yet know where > the optimum is. Beyond a certain length (corresponding > to nearly 3dB gain from the outer code) further list > length increases the false hit probability as much as > genuine decode probability so there is no further gain > to be had (without invoking operator cognition as a > 3rd layer to the coding). So maybe this is an improvement for the next version of EbNaut: Automatic optimised list length setting, depending on the message length? > Also bought a kite but that's for another thread. Which kite? What are the plans? I wonder why not any ham has a kite in northern UK for MF/LF/VLF transmissions. 73, Stefan