Return-Path: Received: from rly-mg09.mx.aol.com (rly-mg09.mail.aol.com [172.20.83.115]) by air-mg06.mail.aol.com (v125.7) with ESMTP id MAILINMG063-a2f4affe7e012c; Sun, 15 Nov 2009 06:37:21 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mg09.mx.aol.com (v125.7) with ESMTP id MAILRELAYINMG091-a2f4affe7e012c; Sun, 15 Nov 2009 06:37:06 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1N9dOw-0006Gb-K6 for rs_out_1@blacksheep.org; Sun, 15 Nov 2009 11:36:14 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1N9dOw-0006GS-4p for rsgb_lf_group@blacksheep.org; Sun, 15 Nov 2009 11:36:14 +0000 Received: from mail-bw0-f221.google.com ([209.85.218.221]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1N9dOu-0007HX-9H for rsgb_lf_group@blacksheep.org; Sun, 15 Nov 2009 11:36:14 +0000 Received: by bwz21 with SMTP id 21so4875440bwz.4 for ; Sun, 15 Nov 2009 03:36:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:content-type; bh=jay8wTMNFQa7KM8uFQlvvlILwxbGKCypZbzqSSy8X40=; b=plOrMRCr/nN6Y5MpRFeJOo87GHgZF1lZqPFOtVTl5H/s6f0b3+i5ClHKNKH9EmiQV3 Bdq4KQ/bQEWAG7KIwn6yaNGYJKw9OTcTRpLNnMmPN9uXjHvKF6PPqDMr7oiMtzqXnwWX x7YBeRISxoyjlQ3SoOYFzBz4P0mDEUtir3TU4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=KxfRq8grcRbS2R+AyJy2+atjNziZoGj6M4Kj90z+CpuvMW7ER47jM2dixBbYHnpOe9 Qvh1ZmUbG95X2pkYqs0bh23PR6kwDF9f20/e2kRaguS8rCizhAuy2PWyYRobiwZurgdJ cLFPJdbja4mfKyAjuEMDB/NWR1RmJyKLOjj8s= MIME-Version: 1.0 Received: by 10.239.145.149 with SMTP id s21mr671515hba.141.1258284966326; Sun, 15 Nov 2009 03:36:06 -0800 (PST) Date: Sun, 15 Nov 2009 11:36:06 +0000 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: Weak Signals - was 500kHz CW - calling CQ Content-Type: multipart/alternative; boundary=001485f724b671b3c20478674c6b X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40, HTML_FONTCOLOR_UNSAFE,HTML_MESSAGE 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-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d253.2 ; domain : googlemail.com DKIM : pass X-Mailer: Unknown (No Version) --001485f724b671b3c20478674c6b Content-Type: text/plain; charset=ISO-8859-1 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 www.g4jnt.com this email has been scanned for political correctness by the nanny state 2009/11/15 Andy Talbot > It'll never catch on. > Mild source coding, inefficient error correction, incoherent demodulator > and an inability to reduce receiver bandwidth anything below 30Hz :-{ > > > > > 2009/11/15 Roger Lapthorn > > If anyone's about, I am trying to use a new fangled digital mode (it's >> called CW) on 500kHz. Calling CQ around 501.7 and looking for any calls. >> >> Have heard M0JXM calling CQ but he did not hear me. >> >> 73s >> Roger G3XBM >> >> -- >> ------------------------------------------------------------- >> http://g3xbm-qrp.blogspot.com/ >> http://www.g3xbm.co.uk >> G3XBM GQRP 1678 ISWL G11088 >> > > --001485f724b671b3c20478674c6b Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
This presentation was aimed at Microwave operators, but has plenty of= relevance to LF
=A0
http://g4jnt.com/MartleSh= am.htm
Includes=A0soundclips of CW buried in noise=A0= with accurately defined S/N ratios

Andy
www.g= 4jnt.com

this email has been scanned for political correctness= by the nanny state
=A0
=A0
2009/11/15 Andy Talbot <andy.g4jnt@googlemail.com&g= t;
It'll never catch on.=A0
Mild source coding, inefficient error correction, incoherent demodula= tor and an=A0inability=A0to reduce=A0receiver bandwidth=A0anything below= =A030Hz :-{



=A0
2009/11/15 Roger Lapthorn <= ;rogerlapthor= n@gmail.com>=20

If anyone's about, I am tr= ying to use a new fangled digital mode (it's called CW) on 500kHz. Cal= ling CQ around 501.7 and looking for any calls.

Have heard M0JXM calling CQ but he did not hear me.

73s
Roge= r G3XBM

--
--------------= -----------------------------------------------
http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.= uk
G3XBM =A0 =A0GQRP 1678 =A0 =A0 =A0ISWL G11088


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