Return-Path: Received: from mtain-mi02.r1000.mx.aol.com (mtain-mi02.r1000.mail.aol.com [172.21.131.155]) by air-mf04.mail.aol.com (v129.4) with ESMTP id MAILINMF042-8be64cacfe1412c; Wed, 06 Oct 2010 18:54:12 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mi02.r1000.mx.aol.com (Internet Inbound) with ESMTP id CA373380000BB; Wed, 6 Oct 2010 18:54:10 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1P3cqG-0006g7-HF for rs_out_1@blacksheep.org; Wed, 06 Oct 2010 23:52:08 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1P3cqG-0006fy-5U for rsgb_lf_group@blacksheep.org; Wed, 06 Oct 2010 23:52:08 +0100 Received: from anchor-post-1.mail.demon.net ([195.173.77.132]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1P3cqD-0002W6-TD for rsgb_lf_group@blacksheep.org; Wed, 06 Oct 2010 23:52:08 +0100 Received: from sighthound.demon.co.uk ([80.177.174.126]) by anchor-post-1.mail.demon.net with esmtp (Exim 4.69) id 1P3cqD-0002co-gH for rsgb_lf_group@blacksheep.org; Wed, 06 Oct 2010 22:52:05 +0000 Received: from opc1 (opc1.twatt.home [192.168.21.16]) by svr3.twatt.home (Postfix) with ESMTP id 9452E1BEF0 for ; Wed, 6 Oct 2010 23:52:04 +0100 (BST) Date: Wed, 6 Oct 2010 23:52:04 +0100 From: John P-G To: rsgb_lf_group@blacksheep.org Message-ID: <20101006235204.569ef327@opc1> In-Reply-To: <1839C3341D954D43B11EB4AAD0F89D74@admind16e37053> References: <1839C3341D954D43B11EB4AAD0F89D74@admind16e37053> Organization: The Gammy Bird X-Mailer: Claws Mail 3.7.4 (GTK+ 2.20.1; i486-pc-linux-gnu) Mime-Version: 1.0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: QRM 498-502 kHz 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: S X-AOL-REROUTE: YES x-aol-sid: 3039400cdeca4cacfe127de9 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none On Wed, 6 Oct 2010 18:47:16 +0100 "Martin Evans" wrote: > > I can see it in Swansea IO81CR Still fairly weak, again, here in Shetland. It's fading up and down, with some degree of frequency selective fading. > My grabber should be accesible at: http://dl.dropbox.com/u/3551430/gm4slv.jpg I'm just showing the lower edge around 498kHz. I tested the RX/Waterfall setup tonight and the minimum signal that shows on the waterfall is around -140dBm. The band noise is well, well, above this and the signal in question is only a few dB above the band noise. The carrier at 497.83 seems to have the same fading pattern as the wideband noise that fills the spectrum above 498kHz Cheers John http://gm4slv.blogspot.com/