Return-Path: Received: from rly-mc06.mail.aol.com (rly-mc06.mail.aol.com [172.20.118.148]) by air-mc01.mail.aol.com (v119.11) with ESMTP id MAILINMC11-6e4470261941d; Tue, 02 Oct 2007 11:19:57 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mc06.mail.aol.com (v119.11) with ESMTP id MAILRELAYINMC610-6e4470261941d; Tue, 02 Oct 2007 11:19:50 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1IcjWw-0004A7-W5 for rs_out_1@blacksheep.org; Tue, 02 Oct 2007 16:19:26 +0100 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1IcjWw-00049y-IG for rsgb_lf_group@blacksheep.org; Tue, 02 Oct 2007 16:19:26 +0100 Received: from sighthound.demon.co.uk ([80.177.174.126]) by relay2.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1IcjWt-0002L5-MX for rsgb_lf_group@blacksheep.org; Tue, 02 Oct 2007 16:19:26 +0100 Received: from lurcher.twatt.local (lurcher.twatt.local [127.0.1.1]) by lurcher.twatt.local (Postfix) with ESMTP id 6696BDA4D9 for ; Tue, 2 Oct 2007 16:19:15 +0100 (BST) Date: Tue, 2 Oct 2007 16:19:15 +0100 (BST) From: John Pumford-Green GM4SLV X-X-Sender: gm4slv@lurcher.twatt.local To: rsgb_lf_group@blacksheep.org In-Reply-To: Message-ID: References: X-Mailer: Pine MIME-Version: 1.0 X-Spam-Score: 0.3 (/) X-Spam-Report: autolearn=disabled,AWL=0.040,RCVD_ILLEGAL_IP=0.234 Subject: Re: LF: Local AM transmitter on PC output Content-Type: TEXT/PLAIN; charset=US-ASCII 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 Tue, 2 Oct 2007, Andy Talbot wrote: > While testing an IQ upconverter chip, I discovered I've got several > tens of millivolts of Virgin AM on 1215kHz coming out of my PC's audio > output. There is enough signal to see it on a frequency counter and > view the AM on a scope. > > There is presumably a transmitter nearby, and/or some curious > resonance in the house wiring that accentuates pick up of this signal. > Its not the LF antenna picking up the signal, so I'm wondering if the > ring-main is forming a resonant loop :-) > > Does anyone know where the transmitter site for this station is located? > > Andy G4JNT > www.scrbg.org/g4jnt > > Hello Andy, I think you're near Southampton? Best guess (you're a bit out of my area) is Fareham, 1KW (low power filler - HI!) Found this listing too http://mysite.wanadoo-members.co.uk/freq_find/Ind_national.pdf Any help? John GM4SLV Shetland