Return-Path: Received: from mtain-mg02.r1000.mx.aol.com (mtain-mg02.r1000.mx.aol.com [172.29.96.202]) by air-md09.mail.aol.com (v129.4) with ESMTP id MAILINMD091-8b944d78a7b7260; Thu, 10 Mar 2011 05:28:07 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mg02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 32D723800013E; Thu, 10 Mar 2011 05:28:05 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Pxd5U-0000Tq-IT for rs_out_1@blacksheep.org; Thu, 10 Mar 2011 10:27:20 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Pxd5U-0000Th-1d for rsgb_lf_group@blacksheep.org; Thu, 10 Mar 2011 10:27:20 +0000 Received: from out1.ip01ir2.opaltelecom.net ([62.24.128.237]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Pxd5R-0006IL-Tg for rsgb_lf_group@blacksheep.org; Thu, 10 Mar 2011 10:27:20 +0000 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhoFAI41eE1OlmiI/2dsb2JhbAAMCph9iRedJ6lnhWIEkCc X-IronPort-AV: E=Sophos;i="4.62,295,1297036800"; d="scan'208,217";a="346169226" Received: from unknown (HELO [192.168.2.2]) ([78.150.104.136]) by out1.ip01ir2.opaltelecom.net with ESMTP; 10 Mar 2011 10:27:10 +0000 Message-ID: <4D78A77E.6020207@talktalk.net> Date: Thu, 10 Mar 2011 10:27:10 +0000 From: "qrss@talktalk.net" User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.15) Gecko/20110303 Thunderbird/3.1.9 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <003201cbde72$606d6090$0401a8c0@xphd97xgq27nyf> <543492.45357.qm@web28102.mail.ukl.yahoo.com> <4D78A2A9.4080001@iup.uni-heidelberg.de> In-Reply-To: <4D78A2A9.4080001@iup.uni-heidelberg.de> X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,RATWARE_GECKO_BUILD=1.426 Subject: Re: LF: Re: VLF Stability and soundcard locking Content-Type: multipart/alternative; boundary="------------060206010205060006060805" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,HTML_MESSAGE 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: 3039ac1d60ca4d78a7b52252 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) --------------060206010205060006060805 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Stefan I listened to that when you posted previously and waited to read the=20 comments, I can't remember seeing any, maybe everyone was speechless=20 like me, all I could manage was *WOW.* 73 Eddie G3ZJO On 10/03/2011 10:06, Stefan Sch=E4fer wrote: > Remember that i have detected my own CW transmission in a distance of=20 > 40.0 km (far field and above 1 Lambda) on 8970 Hz. Listen at=20 > http://dl.dropbox.com/u/19882028/DK7FCinCWon8970Hzthe33kmband.WAV > So it is possible to do a CW QSO there. Distance is relative. While it= =20 > is trivial to do a QSO on 20m in 10000km distance it is something=20 > special to reach 10km on VLF or on Laser-TX or 47 GHz and above. > A VLF x band QSO in CW would have been done if there would be stations= =20 > in that radius of 40, maybe 60 km who would be willing and equipped to= =20 > receive my signal... > > 73, Stefan/DK7FC > --------------060206010205060006060805 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Stefan

I listened to that when you posted previously and waited to read the comments, I can't remember seeing any, maybe everyone was speechless like me, all I could manage was WOW.

73 Eddie G3ZJO

On 10/03/2011 10:06, Stefan Schäfer wrote:

Remember that i have detected my own CW transmission in a distance of 40.0 km (far field and above 1 Lambda) on 8970 Hz. Listen at http://dl.dropbox.com/u/19882028/DK7FCinCWon8970Hzthe33kmband.WAV
So it is possible to do a CW QSO there. Distance is relative. While it is trivial to do a QSO on 20m in 10000km distance it is something special to reach 10km on VLF or on Laser-TX or 47 GHz and above.
A VLF x band QSO in CW would have been done if there would be stations in that radius of 40, maybe 60 km who would be willing and equipped to receive my signal...

73, Stefan/DK7FC

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