Return-Path: Received: from mtain-dc10.r1000.mx.aol.com (mtain-dc10.r1000.mx.aol.com [172.29.64.138]) by air-db02.mail.aol.com (v127_r1.1) with ESMTP id MAILINDB021-85ee4b95408131e; Mon, 08 Mar 2010 13:22:57 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-dc10.r1000.mx.aol.com (Internet Inbound) with ESMTP id 5876A3800017A; Mon, 8 Mar 2010 13:22:54 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NohZz-0001AC-AJ for rs_out_1@blacksheep.org; Mon, 08 Mar 2010 18:21:23 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NohZy-0001A3-Vi for rsgb_lf_group@blacksheep.org; Mon, 08 Mar 2010 18:21:22 +0000 Received: from mout7.freenet.de ([195.4.92.97]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NohZx-0004bw-5k for rsgb_lf_group@blacksheep.org; Mon, 08 Mar 2010 18:21:22 +0000 Received: from [195.4.92.15] (helo=5.mx.freenet.de) by mout7.freenet.de with esmtpa (ID dl4yhf@freenet.de) (port 25) (Exim 4.72 #1) id 1NohZw-0001UT-03 for rsgb_lf_group@blacksheep.org; Mon, 08 Mar 2010 19:21:20 +0100 Received: from blfd-4db1abaf.pool.mediaways.net ([77.177.171.175]:1090 helo=[192.168.178.21]) by 5.mx.freenet.de with esmtpa (ID dl4yhf@freenet.de) (port 25) (Exim 4.72 #2) id 1NohZv-0006Xv-Kx for rsgb_lf_group@blacksheep.org; Mon, 08 Mar 2010 19:21:19 +0100 Message-ID: <4B95401D.1090602@freenet.de> Date: Mon, 08 Mar 2010 19:21:17 +0100 From: =?ISO-8859-1?Q?Wolfgang_B=FCscher?= User-Agent: Thunderbird 2.0.0.23 (Windows/20090812) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <4B8E8027.3060809@iup.uni-heidelberg.de> <4B8EC9A9.80507@abelian.org> <38A51B74B884D74083D7950AD0DD85E82A1B31@File-Server-HST.hst.e-technik.tu-darmstadt.de> <4B9203FE.3000703@abelian.org> <38A51B74B884D74083D7950AD0DD85E82A1B34@File-Server-HST.hst.e-technik.tu-darmstadt.de> <4B92300A.7090604@freenet.de> <38A51B74B884D74083D7950AD0DD85E82A1B37@File-Server-HST.hst.e-technik.tu-darmstadt.de> <4B923D2C.1030307@freenet.de> <38A51B74B884D74083D7950AD0DD85E82A1B39@File-Server-HST.hst.e-technik.tu-darmstadt.de> In-Reply-To: <38A51B74B884D74083D7950AD0DD85E82A1B39@File-Server-HST.hst.e-technik.tu-darmstadt.de> X-Spam-Score: 1.3 (+) X-Spam-Report: autolearn=disabled,RCVD_IN_BL_SPAMCOP_NET=1.332 Subject: Re: LF: VLF TX coil ready Content-Type: text/plain; charset=ISO-8859-1; format=flowed 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: 3039ac1d408a4b95407e479f X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) Hi Stefan, > A VLF grabber would be very fine! If you can arrange that, it would perhaps be a motivation for the dreamers ;-) > Well there are two now (Markus' and Paul's) .. I will try to add a third but need to get away from the local QRM. The plan is to use an UHF FM link to the remote, battery-powered site but there are some issues to be solved - one of them is the lack of dynamic range of the FM transmitter/receiver, so I may have to add some analog bandpass filtering before the FM modulator (which would render it useless for broadband VLF signals, especially natural radio signals..). Will keep you informed, when/where another VLF 'live spectrogram' goes online. Cheers, Wolf .