Return-Path: Received: (qmail 10480 invoked from network); 8 Feb 2002 23:49:58 -0000 Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by excalibur-qfe1-smtp-plusnet.harl.plus.net with SMTP; 8 Feb 2002 23:49:58 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 10182 invoked from network); 8 Feb 2002 23:49:56 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior.services.quay.plus.net with SMTP; 8 Feb 2002 23:49:56 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16ZKio-0006X0-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 08 Feb 2002 23:46:26 +0000 Received: from imo-r06.mx.aol.com ([152.163.225.102]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16ZKin-0006Wp-00 for rsgb_lf_group@blacksheep.org; Fri, 08 Feb 2002 23:46:25 +0000 Received: from MarkusVester@aol.com by imo-r06.mx.aol.com (mail_out_v32.5.) id l.144.9373ea9 (16337) for ; Fri, 8 Feb 2002 18:44:46 -0500 (EST) From: MarkusVester@aol.com Message-ID: <144.9373ea9.2995bcee@aol.com> Date: Fri, 8 Feb 2002 18:44:46 EST Subject: LF: Re: Jason Tests signalling comparison To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 8bit X-Mailer: AOL 4.0.i for Windows 95 sub 72 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Dear Jim, ufb copy " M0BMU M0BMU JASON92 " on 135918, now at 23:30. As a late reply to your posting of Jan 24th (still catching up after a holiday): > ... The Jason signal is equivalent to 17 > separate QRSS stations on different frequencies, using a funny type of code > arranged so that only one station is transmitting at any one time. So the > ability to detect this kind of signal with a given signal power and noise > power spectral density only depends on the length of the dots and not at > all on the number of frequencies used. ... ...not quite, I think. When searching the maximum amplitude in more channels, the statistical probability of a high noise peak in one of them becomes larger, and the error rate increases. Otherwise, one could transmit any number of bits using only a given amount of energy. 73 de Markus, DF6NM