Return-Path: Received: from mtain-mh12.r1000.mx.aol.com (mtain-mh12.r1000.mx.aol.com [172.29.96.224]) by air-db09.mail.aol.com (v127_r1.1) with ESMTP id MAILINDB091-85f54b93d93d152; Sun, 07 Mar 2010 11:50:05 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-mh12.r1000.mx.aol.com (Internet Inbound) with ESMTP id 10CF0380000BC; Sun, 7 Mar 2010 11:50:03 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NoJeq-00064V-Ai for rs_out_1@blacksheep.org; Sun, 07 Mar 2010 16:48:48 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NoJep-00064M-M1 for rsgb_lf_group@blacksheep.org; Sun, 07 Mar 2010 16:48:47 +0000 Received: from mailout-us.gmx.com ([74.208.5.67]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1NoJen-0004ps-EI for rsgb_lf_group@blacksheep.org; Sun, 07 Mar 2010 16:48:47 +0000 Received: (qmail invoked by alias); 07 Mar 2010 16:48:38 -0000 Received: from 75-168-150-7.mpls.qwest.net (EHLO [192.168.1.100]) [75.168.150.7] by mail.gmx.com (mp-us002) with SMTP; 07 Mar 2010 11:48:38 -0500 X-Authenticated: #60769621 X-Provags-ID: V01U2FsdGVkX18jGtYefWojkrgvL3ACqXUC0z4VUVlE2pvPUinEfP CzsxMqROjS7Mke Message-ID: <4B93D8E3.7050808@gmx.com> Date: Sun, 07 Mar 2010 10:48:35 -0600 From: "Mike.WE0H" User-Agent: Thunderbird 2.0.0.23 (X11/20090817) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <4B93D1A1.3010006@gmx.com> <4C48E2031D53431D9F676A408802F59D@Black> In-Reply-To: X-Y-GMX-Trusted: 0 X-FuHaFi: 0.60999999999999999 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: 8.97 kHz Grabber online (9 kHz line) 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: 3039ac1d60e04b93d93b4d11 X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) The sensitivity must be very high then? Is there a way to filter out the LF & MF mixed signals and clean up the spectrum like we see at 2200 & 600 meters? I tried listening on the 9kc band last night but I had huge noise just below that. I have to figure out what causes that here. What are you using for an antenna? Is this a soundcard receiver? USB or card in the slot soundcard? Someone will have to convince Mal to get on the 9kc band as he has lots of space for big antennas...hi hi Pretty cool reading about those two fellows making 12 & 16km with low power. Might be worth trying a kilowatt audio amp? 9kc tree fires in the news...hi hi Mike WE0H Markus V wrote: > ah, maybe my answer missed your point - the peak in the frequency > response is simply due to the preselection filter. > > Regards, Markus > > ----- Original Message ----- > *From:* Markus V > > Hello Mike, > > this is most likely intermodulation from the 9 kHz raster in the > European MF and LF broadcast bands. Viewed in detail, it is not a > single carrier but a conglomerate of closely spaced lines, probably > due to non precise BC carrier frequencies. > > Best 73, > > Markus, DF6NM > > ----- Original Message ----- > *From:* Mike.WE0H > > What is that big signal at 9.00kc? > > Mike > WE0H >