Return-Path: Received: from rly-mg03.mx.aol.com (rly-mg03.mail.aol.com [172.20.83.109]) by air-mg08.mail.aol.com (v121_r4.4) with ESMTP id MAILINMG083-a064973055f20; Sun, 18 Jan 2009 05:33:23 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mg03.mx.aol.com (v121_r4.4) with ESMTP id MAILRELAYINMG038-a064973055f20; Sun, 18 Jan 2009 05:33:05 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1LOUx7-0007aC-SF for rs_out_1@blacksheep.org; Sun, 18 Jan 2009 10:32:25 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1LOUx7-0007a3-9T for rsgb_lf_group@blacksheep.org; Sun, 18 Jan 2009 10:32:25 +0000 Received: from sighthound.demon.co.uk ([80.177.174.126]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1LOUx1-0007Jp-Qj for rsgb_lf_group@blacksheep.org; Sun, 18 Jan 2009 10:32:25 +0000 Received: from lurcher (lurcher.twatt.home [10.0.0.8]) by rsync.twatt.local (Postfix) with ESMTP id 77CB53B731 for ; Sun, 18 Jan 2009 10:32:12 +0000 (GMT) Date: Sun, 18 Jan 2009 10:32:11 +0000 From: John P-G To: rsgb_lf_group@blacksheep.org Message-ID: <20090118103211.542b3582@lurcher> In-Reply-To: <92949CB2DED94059B4BEA6D3BA10FDD7@JimPC> References: <92949CB2DED94059B4BEA6D3BA10FDD7@JimPC> X-Mailer: Claws Mail 3.5.0 (GTK+ 2.14.4; i486-pc-linux-gnu) Mime-Version: 1.0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Re: 137 kHz WSPR tests 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-IP: 193.82.116.20 On Sun, 18 Jan 2009 09:50:28 -0000 "James Moritz" wrote: > Dear LF Group, > > The WSPR beacon is now QRT - I'm giving the electricity meter a > rest :-) Thanks for running it for so many hours Jim, I didn't get a chance yesterday to do much monitoring, but I set up a grabber to watch for OH1LSQ, and have kept each 5-minute capture showing the range 136.7 - 136.9 overnight - with some interesting results. I've just reset my RX to allow both WSPR and the narrow grabber range, and discovered that WSPR and Spec lab will happily work together at the same time on the same PC! I have tuned the RX to 136.000, in normal SSB bandwidth (previous WSPR tests have used a 250Hz IF filter centred on 1500Hz / 137.500). This allows the Spec Lab grabber to watch the same 136.7 - 136.9 window for Paul-Henrik and WSPR to watch 137.500 Judicious adjustment was necessary, of the twin PBT controls to remove the commercial QRM, but it seems to work okay. Just need some WSPR transmissions to decode, to prove the theory. The grabber image, updated every 5 minutes, is here: http://www.sighthound.demon.co.uk/gm4slv/gm4slv_136800.jpg Cheers, John GM4SLV