Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mb04.r1000.mx.aol.com (Internet Inbound) with ESMTP id 39924380000BA; Thu, 13 Sep 2012 09:18:37 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1TC9Hy-0003Tg-1Z for rs_out_1@blacksheep.org; Thu, 13 Sep 2012 14:17:02 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1TC9Hx-0003TX-Gn for rsgb_lf_group@blacksheep.org; Thu, 13 Sep 2012 14:17:01 +0100 Received: from mta41.charter.net ([216.33.127.83]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1TC9Hu-0007fq-IT for rsgb_lf_group@blacksheep.org; Thu, 13 Sep 2012 14:17:00 +0100 Received: from imp09 ([10.20.200.9]) by mta41.charter.net (InterMail vM.8.01.05.02 201-2260-151-103-20110920) with ESMTP id <20120913131655.RBIU10143.mta41.charter.net@imp09> for ; Thu, 13 Sep 2012 09:16:55 -0400 Received: from [192.168.2.101] ([74.94.151.157]) by imp09 with smtp.charter.net id ydGv1j00A3Q0UcS05dGvM9; Thu, 13 Sep 2012 09:16:55 -0400 X-Authority-Analysis: v=1.1 cv=nlrKf9u5uG3fs/vD0VBbL3/xzyN25p4t1WHsSeqasGo= c=1 sm=1 a=yUnIBFQkZM0A:10 a=IkcTkHD0fZMA:10 a=ejtJoL0ZZT7mxq6cVE868A==:17 a=QejfARXMAAAA:8 a=37d7qbgIniKkze9DUccA:9 a=QEXdDO2ut3YA:10 a=8tOyKqDfGbEA:10 a=ejtJoL0ZZT7mxq6cVE868A==:117 X-Auth-id: dzF0YWdAY2hhcnRlci5uZXQ= References: <66C690FA65054015B54D3DC3A6699556@AGB> <8CF5F1C3F556E0D-1A4C-500CE@webmail-d006.sysops.aol.com> <5050D7C3.2010005@legal-medicine.de> <5051D3DD.7010407@iup.uni-heidelberg.de> From: John Andrews X-Mailer: iPhone Mail (8E501) In-Reply-To: <5051D3DD.7010407@iup.uni-heidelberg.de> Message-Id: <31EF6D83-331A-48D8-8778-0C36586866FF@charter.net> Date: Thu, 13 Sep 2012 09:16:52 -0400 To: "rsgb_lf_group@blacksheep.org" Mime-Version: 1.0 (iPhone Mail 8E501) X-Spam-Score: -0.5 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Stephan, Jay and I were disappointed with it. The decoding was not very robust with noise and fading. I will look for notes at home - don't remember the details. John, W1TAG [...] Content analysis details: (-0.5 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [216.33.127.83 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.5 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-Scan-Signature: 739d4fb39bd02fc5a2de5437a39bb056 Subject: Re: LF: CMSK Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=TO_ADDRESS_EQ_REAL 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-global-disposition: G x-aol-sid: 3039ac1d60185051dd2d68d5 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Stephan, Jay and I were disappointed with it. The decoding was not very robust with n= oise and fading. I will look for notes at home - don't remember the details.= =20 John, W1TAG On Sep 13, 2012, at 8:38 AM, Stefan Sch=C3=A4fer wrote: > OK... > Edgar from Tasmania passed me to this webpage http://www.qsl.net/zl1bpu/CM= SK/cmsk.htm showing the CMSK mode. Probably well knows by the old experts :-= ) >=20 > So what about that mode for very weak signal modes on LF? Pros and Cons? > Is this woth to try above 10000 km distance? >=20 > 73, Stefan/DK7FC >=20 > Am 12.09.2012 20:43, schrieb pws: >> Hi, >>=20 >> Question: why do all those professional services for submarines >> down at LF/VLF use MSK and not any kind of that advanced stuff >> you are talking about? >>=20 >> As far as I know they are using non-linear transmitters like my >> cellphone does. >>=20 >> Peter, df3lp >>=20 >=20