Return-Path: Received: from mtain-ma06.r1000.mx.aol.com (mtain-ma06.r1000.mx.aol.com [172.29.96.14]) by air-de03.mail.aol.com (v129.4) with ESMTP id MAILINDE032-5eab4ca4fdcaf0; Thu, 30 Sep 2010 17:14:50 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-ma06.r1000.mx.aol.com (Internet Inbound) with ESMTP id AB20B380000B7; Thu, 30 Sep 2010 17:14:48 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1P1QRY-0000Xh-EL for rs_out_1@blacksheep.org; Thu, 30 Sep 2010 22:13:32 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1P1QRO-0000XY-4R for rsgb_lf_group@blacksheep.org; Thu, 30 Sep 2010 22:13:22 +0100 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1P1QRO-0000RY-0Y for rsgb_lf_group@blacksheep.org; Thu, 30 Sep 2010 22:13:23 +0100 Received: from ix.urz.uni-heidelberg.de (cyrus-portal.urz.uni-heidelberg.de [129.206.100.176]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id o8ULDhEw027679 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 30 Sep 2010 23:13:43 +0200 Received: from extmail.urz.uni-heidelberg.de (extmail.urz.uni-heidelberg.de [129.206.100.140]) by ix.urz.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id o8ULDLYJ010609 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 30 Sep 2010 23:13:21 +0200 Received: from [147.142.13.53] (vpn513-053.rzuser.uni-heidelberg.de [147.142.13.53]) by extmail.urz.uni-heidelberg.de (8.13.4/8.13.1) with ESMTP id o8ULCpsP007047 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 30 Sep 2010 23:12:51 +0200 Message-ID: <4CA4FD7E.3070808@iup.uni-heidelberg.de> Date: Thu, 30 Sep 2010 23:13:34 +0200 From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.11) Gecko/20100711 Thunderbird/3.0.6 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <4CA4D1CA.904@o2.ie> In-Reply-To: X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,RATWARE_GECKO_BUILD=1.426 Subject: Re: LF: 137.5kHz WSPR 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: 3039ac1d600e4ca4fdc86b7a X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) Hi Roger, Am 30.09.2010 20:26, schrieb Roger Lapthorn: > I really must make a serious attempt to raise my ERP though as the > current level is just not enough to give most people a fighting chance > of copying me. Good idea ;-) Change the IRF510 in the class E by a IRFP460 and increase the voltage to 100 VDC. Compared to 12 V, this will give ~ 64x the power, so 18 dB :-) 73, Stefan