Return-Path: Received: from rly-ma06.mx.aol.com (rly-ma06.mail.aol.com [172.20.116.50]) by air-ma09.mail.aol.com (v125.7) with ESMTP id MAILINMA092-8b04b004a9b1c7; Sun, 15 Nov 2009 13:38:33 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-ma06.mx.aol.com (v125.7) with ESMTP id MAILRELAYINMA062-8b04b004a9b1c7; Sun, 15 Nov 2009 13:38:21 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1N9jyX-0008G9-FI for rs_out_1@blacksheep.org; Sun, 15 Nov 2009 18:37:25 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1N9jyW-0008G0-Rl for rsgb_lf_group@blacksheep.org; Sun, 15 Nov 2009 18:37:24 +0000 Received: from cmsout01.mbox.net ([165.212.64.31]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1N9jyV-0002Hq-UT for rsgb_lf_group@blacksheep.org; Sun, 15 Nov 2009 18:37:24 +0000 Received: from cmsout01.mbox.net (cmsout01-lo [127.0.0.1]) by cmsout01.mbox.net (Postfix) with ESMTP id B0F742AC3F8 for ; Sun, 15 Nov 2009 18:37:16 +0000 (GMT) Received: from cmsapps04.cms.usa.net [165.212.11.133] by cmsout01.mbox.net via smtad (C8.MAIN.3.58V) with ESMTP id XID392Nkoslq4688X01; Sun, 15 Nov 2009 18:37:16 -0000 X-USANET-Source: 165.212.11.133 IN dibene@usa.net cmsapps04.cms.usa.net X-USANET-MsgId: XID392Nkoslq4688X01 Received: from [192.168.1.3] [151.47.212.35] by cmsapps04.cms.usa.net (ESMTPA/dibene@usa.net) via mtad (C8.MAIN.3.53P) with ESMTPA id 413Nkoslo5472M40; Sun, 15 Nov 2009 18:37:15 -0000 X-USANET-Auth: 151.47.212.35 AUTH dibene@usa.net [192.168.1.3] Message-ID: <4B004A56.5050907@usa.net> Date: Sun, 15 Nov 2009 19:37:10 +0100 From: Alberto di Bene User-Agent: Thunderbird 2.0.0.23 (Windows/20090812) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: In-Reply-To: X-Enigmail-Version: 0.96.0 Z-USANET-MsgId: XID413NkoslP5472X40 X-Karma: unknown: X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,MIME_HTML_ONLY=0.001 Subject: Re: LF: Weak Signals - was 500kHz CW - calling CQ Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.1 required=5.0 tests=HTML_40_50,HTML_MESSAGE, HTML_TITLE_EMPTY,MIME_HTML_ONLY autolearn=no version=2.63 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-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) Andy Talbot wrote:

This presentation was aimed at Microwave operators, but has plenty of relevance to LF

http://g4jnt.com/MartleSham.htm
Includes soundclips of CW buried in noise with accurately defined S/N ratios

Andy

Very nice presentation Andy,

there were any grumpy and disgruntled OMs in the audience objecting to your dismissal
of CW as an effective weak-signal mode ? :-)

73 Alberto I2PHD

P.S. All the audio link in your presentation are broken as they all refer to WAV files on you C:
disk, which of course is not accessible when playing the presentation.