Return-Path: Received: from mtain-dh02.r1000.mx.aol.com (mtain-dh02.r1000.mx.aol.com [172.29.65.22]) by air-dc04.mail.aol.com (v129.4) with ESMTP id MAILINDC044-86a24c0c0f4cc1; Sun, 06 Jun 2010 17:12:44 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-dh02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 6329C3800009B; Sun, 6 Jun 2010 17:12:40 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OLN8A-0008Ry-Hf for rs_out_1@blacksheep.org; Sun, 06 Jun 2010 22:11:42 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OLN8A-0008Rp-5b for rsgb_lf_group@blacksheep.org; Sun, 06 Jun 2010 22:11:42 +0100 Received: from mailout-us.gmx.com ([74.208.5.67]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1OLN88-0005xS-5P for rsgb_lf_group@blacksheep.org; Sun, 06 Jun 2010 22:11:42 +0100 Received: (qmail invoked by alias); 06 Jun 2010 21:11:33 -0000 Received: from 75-168-143-142.mpls.qwest.net (EHLO [192.168.1.100]) [75.168.143.142] by mail.gmx.com (mp-us003) with SMTP; 06 Jun 2010 17:11:33 -0400 X-Authenticated: #60769621 X-Provags-ID: V01U2FsdGVkX18DBEQJaHIDHMEMpgR7Uc3msh+jNSi1ndph8niz9l IwOsbEXG2WqL4Z Message-ID: <4C0C0F06.2040508@gmx.com> Date: Sun, 06 Jun 2010 16:11:34 -0500 From: "Mike.WE0H" User-Agent: Thunderbird 2.0.0.24 (X11/20100317) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <657E7065AC4C454AB63F6C7C2FF043F6@Black> <003101cb04c2$0913cc10$0401a8c0@xphd97xgq27nyf> <1607287044.1492139.1275754813942.JavaMail.fmail@mwmweb034> <38A51B74B884D74083D7950AD0DD85E82A1C24@File-Server-HST.hst.e-technik.tu-darmstadt.de> <7.0.1.0.1.20100606111158.018277a8@magma.ca> <02a901cb05bb$695236d0$0201a8c0@Clemens04> In-Reply-To: <02a901cb05bb$695236d0$0201a8c0@Clemens04> X-Y-GMX-Trusted: 0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: VLF: RX stations in Canada and US? 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: 3039ac1d41164c0c0f48214d X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) Put this in front of the receiver and it'll work to DC. http://sites.google.com/site/g3xbmqrp/Home/saq I think that would be an easy receive converter for someone to build. That way a guy could use his HF rig's DSP filtering. Mike WE0H Clemens P wrote: > Hi Joe, > > from what I can find in the web it tunes down to (only) 15kHz. > That's probably because below 15kHz synthesizer sideband noise would > be an issue. > My Sony CRF-1 tunes down to zero Hertz but you can > hear the increasing synth. noise below 15kHz . > But it's still possible to receive the three alphas at ca.12kHz and > ca.15kHz. > Maybe when using the broadest filter with 8kHz you can get usable reception > at 8,97kHz. > For a first try I would look for the alphas at ~12kHz. > OTOH, >15kHz you can expect an excellent performance with this rx. > > 73 > Clemens > DL4RAJ