Return-Path: Received: from mtain-dc04.r1000.mx.aol.com (mtain-dc04.r1000.mx.aol.com [172.29.64.132]) by air-ma04.mail.aol.com (v129.4) with ESMTP id MAILINMA042-b5154cd483b937; Fri, 05 Nov 2010 18:22:49 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dc04.r1000.mx.aol.com (Internet Inbound) with ESMTP id DF01D3800010C; Fri, 5 Nov 2010 18:22:45 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PEUdm-0003gK-MR for rs_out_1@blacksheep.org; Fri, 05 Nov 2010 22:20:10 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PEUdl-0003gB-Tq for rsgb_lf_group@blacksheep.org; Fri, 05 Nov 2010 22:20:09 +0000 Received: from lon1-post-2.mail.demon.net ([195.173.77.149]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PEUdj-0005d0-C5 for rsgb_lf_group@blacksheep.org; Fri, 05 Nov 2010 22:20:09 +0000 Received: from sighthound.demon.co.uk ([80.177.174.126]) by lon1-post-2.mail.demon.net with esmtp (Exim 4.69) id 1PEUdi-0001im-bv for rsgb_lf_group@blacksheep.org; Fri, 05 Nov 2010 22:20:06 +0000 Received: from svr3 (unknown [192.168.21.4]) by svr3.twatt.home (Postfix) with ESMTP id 2BDA01BD67 for ; Fri, 5 Nov 2010 22:20:06 +0000 (GMT) Date: Fri, 5 Nov 2010 22:20:05 +0000 From: gm4slv To: rsgb_lf_group@blacksheep.org Message-ID: <20101105222005.5d03d9e8@svr3> In-Reply-To: <003501cb7d29$ece2d190$6d01a8c0@DELL4> References: <000601cb7cdc$f7010680$8d01a8c0@JAYDELL> <003501cb7d29$ece2d190$6d01a8c0@DELL4> Organization: The Gammy Bird X-Mailer: Claws Mail 3.7.6 (GTK+ 2.22.0; i486-pc-linux-gnu) Mime-Version: 1.0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: WSPR window Content-Type: text/plain; charset=US-ASCII 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-global-disposition: G x-aol-sid: 3039ac1d40844cd483b52a21 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none On Fri, 5 Nov 2010 16:42:12 -0400 wrote: > John and group > > Your 'data mining' produced some misleading results and conclusions... > Jay, LF, Fair enough. I still think we're all better transmitting and receiving on the same part of the spectrum - as this maximizes the number of sources and sinks all being available at the same time, so as to discover the propagation openings as they occur. Your position is that it's futile for us to occupy the same 200Hz of WSPR-space on 500kHz. Well, as much as I disagree with this, I'm prepared to bow to your better judgement. As for 30m, I've been running a test there today (an average, or below average day), in RX only mode and there are many instances of reasonably strong stations, often 5 or more in the same timeslot, with +ve SNR, as well as weak ones in the low negative SNR range: 2010-11-05 13:02 G0BYH 10.140229 +11 0 JO01hw 5 GM4SLV/2 IP90gg 935 2010-11-05 13:02 2E0POQ 10.140184 -18 0 IO91 0.5 GM4SLV/2 IP90gg 978 Here's a 29dB difference in SNR report, in the same timeslot. Another randomly chosen period: 2010-11-05 13:36 2E0POQ 10.140184 -10 0 IO91 0.5 GM4SLV/2 IP90gg 978 2010-11-05 13:36 OK2SAM 10.140233 -26 0 JN99du 0.5 GM4SLV/2 IP90gg 1698 2010-11-05 13:36 G4TRP 10.140222 -20 0 IO90st 5 GM4SLV/2 IP90gg 1054 2010-11-05 13:36 G3RLE 10.140193 +1 0 IO83vo 1 GM4SLV/2 IP90gg 743 2010-11-05 13:36 DK5FH 10.140167 +3 0 JO40kd 10 GM4SLV/2 IP90gg 1299 One period with 5 stations giving SNRs between +3 and -26 = okay +3dB is not barnstorming, but it shows that it's possible to receive a couple of good +ve SNRs and a couple of weak -ve ones at the same time.... Now, I think I'll call it a day on this one. I'll make this my final night on 499.6 John GM4SLV