Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da04.r1000.mx.aol.com (Internet Inbound) with ESMTP id A63B838000179; Thu, 2 Feb 2012 14:02:05 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Rt1UG-0008Rv-Fv for rs_out_1@blacksheep.org; Thu, 02 Feb 2012 18:34:24 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Rt1UG-0008Rm-4V for rsgb_lf_group@blacksheep.org; Thu, 02 Feb 2012 18:34:24 +0000 Received: from relay.uni-heidelberg.de ([129.206.100.212]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Rt1UF-00062c-9j for rsgb_lf_group@blacksheep.org; Thu, 02 Feb 2012 18:34:24 +0000 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id q12IYMcn007530 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 2 Feb 2012 19:34:22 +0100 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id q12IYMij023394 for ; Thu, 2 Feb 2012 19:34:22 +0100 Message-ID: <4F2AD710.4040607@iup.uni-heidelberg.de> Date: Thu, 02 Feb 2012 19:33:52 +0100 From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <000001cce062$f75dfad0$e619f070$@broadpark.no> <8CEAED202205706-C78-2162B@webmail-stg-m04.sysops.aol.com> <4F2929BD.4070308@charter.net> <4F2946AE.6040205@iup.uni-heidelberg.de> <4F2AC269.7090605@iup.uni-heidelberg.de> In-Reply-To: <4F2AC269.7090605@iup.uni-heidelberg.de> X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,RATWARE_GECKO_BUILD=1.426 Subject: Re: VLF: Progress using WOLF on VLF 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-SCOLL-SCORE: 0:2:448272544:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d404c4f2addad68e5 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none VLF, ... just forced and convinced me to anyway spend some time with DOS commands, as learned 5 minutes ago. Now i can generate the "keyed" message in a wav sound file that sounds like this: http://dl.dropbox.com/u/19882028/VLF/wolfx.wav Will then use a SpecLab generated 8970 Hz carrier and inverse the phase by generating a switch signal from that file. So the PA can then be a ordinary class D PA, designed for 8970 Hz / 2 Let's see how it works :-) 73, Stefan/DK7FC