Return-Path: Received: from mtain-me09.r1000.mx.aol.com (mtain-me09.r1000.mx.aol.com [172.29.96.145]) by air-de08.mail.aol.com (v129.4) with ESMTP id MAILINDE083-5ec04cbb4a2456; Sun, 17 Oct 2010 15:10:28 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-me09.r1000.mx.aol.com (Internet Inbound) with ESMTP id 14B323800009C; Sun, 17 Oct 2010 15:10:26 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1P7YbG-0008UU-Jx for rs_out_1@blacksheep.org; Sun, 17 Oct 2010 20:08:54 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1P7YbG-0008UL-7g for rsgb_lf_group@blacksheep.org; Sun, 17 Oct 2010 20:08:54 +0100 Received: from out1.ip02ir2.opaltelecom.net ([62.24.128.238]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1P7YbE-00032M-60 for rsgb_lf_group@blacksheep.org; Sun, 17 Oct 2010 20:08:54 +0100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ApAFAKvmukxcEY2u/2dsb2JhbACHZZlGccJLhUkEjWY X-IronPort-AV: E=Sophos;i="4.57,343,1283727600"; d="scan'208";a="340283003" Received: from unknown (HELO xphd97xgq27nyf) ([92.17.141.174]) by out1.ip02ir2.opaltelecom.net with SMTP; 17 Oct 2010 20:08:46 +0100 Message-ID: <002c01cb6e2e$b8baec40$0401a8c0@xphd97xgq27nyf> From: "mal hamilton" To: References: <8CD38567F4B0C6A-1C1C-116D@webmail-m021.sysops.aol.com> <2C4BE56C4BAB4EB984EBC865A2BBC338@Black> <4CBAE155.6030500@freenet.de> <84762FB94EEB4248987AE5E44EBD03A8@JimPC> <001101cb6e02$e26c7620$0401a8c0@xphd97xgq27nyf> Date: Sun, 17 Oct 2010 20:08:45 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: VLF: Re: Detections of 5 microwatt transmission Content-Type: text/plain; charset="iso-8859-1" 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: 3039ac1d60914cbb4a2275e6 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Jacek Tnx for your suggestion but I prefer CW or maybe QRS3 anything else is too slow for me. If someone can generate a few watts erp for me to make a QSO then I could get interested but not QRS 600000000000000000000 and a lot of guesswork. de mal/g3kev ----- Original Message ----- From: "Jacek Lipkowski" To: Sent: Sunday, October 17, 2010 7:22 PM Subject: Re: VLF: Re: Detections of 5 microwatt transmission > On Sun, 17 Oct 2010, mal hamilton wrote: > > > This looks like a lot of trouble for no real practical purpose, other than > > maybe get a glimpse of a carrier an odd time on 8970 Kcs > > The possibility of a real time QSO on this band over any distance looks > > remote. In all it seems a lot of effort for little reward. > > Mal, take a look at Stefan's signal at 904km: > http://www.lipkowski.org/~sq5bpf/dk7fc_20101002/ > the shorter lower frequency dash is abt 720s long, a 120s dash would still > be detactable. > > so DFCW120 is practical at 904km distance. DFCW 120 is considered a > practical QSO mode by many. > > btw Mal, maybe you should try your luck in transmitting with your big > antennas. get a stable frequency generator, put up a carrier, and give us > a chance. you might be surprised at the results. > > VY 73 > > Jacek / SQ5BPF >