Return-Path: Received: from rly-df03.mx.aol.com (rly-df03.mail.aol.com [172.19.156.16]) by air-df07.mail.aol.com (v121_r5.5) with ESMTP id MAILINDF072-538498a0874228; Wed, 04 Feb 2009 16:28:33 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-df03.mx.aol.com (v121_r4.4) with ESMTP id MAILRELAYINDF031-538498a0874228; Wed, 04 Feb 2009 16:28:21 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1LUpI7-0005f8-MB for rs_out_1@blacksheep.org; Wed, 04 Feb 2009 21:28:15 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1LUpI7-0005ez-8p for rsgb_lf_group@blacksheep.org; Wed, 04 Feb 2009 21:28:15 +0000 Received: from mailout.toya.net.pl ([217.113.224.27] ident=postfix) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1LUpI3-0003oV-VJ for rsgb_lf_group@blacksheep.org; Wed, 04 Feb 2009 21:28:14 +0000 Received: from localhost (unknown [192.168.120.26]) by lazir.toya.net.pl (TOYAnet MailServer) with ESMTP id 1296E8C315 for ; Wed, 4 Feb 2009 22:27:10 +0100 (CET) X-TOYA-AV: AntyVir-Skaner at toya.net.pl Received: from lazir.toya.net.pl ([192.168.120.25]) by localhost (antyvir.toya.net.pl [192.168.120.26]) (amavisd-new, port 10024) with ESMTP id z3OAxd3pcGwj for ; Wed, 4 Feb 2009 22:27:10 +0100 (CET) Received: from [10.11.178.152] (lazir [217.113.224.3]) (Authenticated sender: unimlyn) by lazir.toya.net.pl (TOYAnet MailServer) with ESMTP id C29788C2EF for ; Wed, 4 Feb 2009 22:27:09 +0100 (CET) Message-ID: <498A082E.6010100@toya.net.pl> Date: Wed, 04 Feb 2009 22:27:10 +0100 From: =?UTF-8?B?UGlvdHIgTcWCeW5hcnNraQ==?= User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <01eb01c9832c$74945e50$a402a8c0@Inspiron><20090131111012.i80joik1ztc0wggk@webmail4.kuleuven.be><000f01c983b5$cfe04330$8d01a8c0@JAYDELL> <20090131200626.39efb3dc@lurcher> <071798B2D2F8408E9570FC11F569524C@AGB> <4628B29DCACB438998517294A4302D81@AGB> <7290C094FC114B7FAEDC98F03A2E2519@AGB> In-Reply-To: <7290C094FC114B7FAEDC98F03A2E2519@AGB> X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: If anyones about , MT63 x 500 Hz and Olivia 500 x 8 >MODE CHANGE<2100 hrs> Content-Type: text/plain; charset=UTF-8; format=flowed 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=0.0 required=5.0 tests=none 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) Graham wrote: > Mode change > >> From the initial reports it looks like the MT63 system is not as >> robust at > > the olivia 500 x 8 > > I will change the MT63 mode to MFSK16 , at 1000 Hz audio cent , ( > 502 Khz rf cent ) > > As mfsk will pass via a non linear system , this may be of wider interest > > Change time >>> 2100 Hrs gmt <<<< Dear Graham, LF Group i do not remeber if there was a test performed on 500 kHz using another multi-tone FSK transmission namely, THROB - it is available in multipsk package of digi-modes. i think it should be superior to mfsk16 at MF especially when using lower rates 1 or 2 pulses per second .in such case the bandwidth is 72 Hz prabably it is still too 'fast' but if the speed of pulses (throbes) would be lowered it could be another managable mode on LF/MF unfortunately , your test transmissions using different digi modes is still too 'local' for me .. but Jim,, MBU, JOhn, SLV might come out with positive decoding - so i look at the new e-mails .... :) 73, peter, sq7mpj qth: lodz, poland /jo91rs/