X-GM-THRID: 1236371748710129320 X-Gmail-Labels: rsgb lf Delivered-To: daveyxm@gmail.com Received: by 10.78.172.11 with SMTP id u11cs245312hue; Mon, 14 May 2007 14:59:18 -0700 (PDT) Received: by 10.67.29.7 with SMTP id g7mr3824045ugj.1179179957729; Mon, 14 May 2007 14:59:17 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.google.com with ESMTP id 20si11880984uga.2007.05.14.14.59.15; Mon, 14 May 2007 14:59:17 -0700 (PDT) Received-SPF: neutral (google.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1HniXT-0006uV-LI for rs_out_1@blacksheep.org; Mon, 14 May 2007 22:57:07 +0100 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1HniXT-0006uM-4b for rsgb_lf_group@blacksheep.org; Mon, 14 May 2007 22:57:07 +0100 Received: from cmsout02.mbox.net ([165.212.64.32]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1HniXS-0008DX-4O for rsgb_lf_group@blacksheep.org; Mon, 14 May 2007 22:57:07 +0100 Received: from cmsout02.mbox.net (cmsout02.mbox.net [165.212.64.32]) by cmsout02.mbox.net (Postfix) with ESMTP id 8AB405CBB for ; Mon, 14 May 2007 21:56:51 +0000 (GMT) Received: from cmsapps02.cms.usa.net [165.212.11.138] by cmsout02.mbox.net via smtad (C8.MAIN.3.34P) with ESMTP id XID650LeNV5z8536X02; Mon, 14 May 2007 21:56:51 -0000 X-USANET-Source: 165.212.11.138 IN dibene@usa.net cmsapps02.cms.usa.net X-USANET-MsgId: XID650LeNV5z8536X02 Received: from [192.168.0.2] [151.76.209.169] by cmsapps02.cms.usa.net (ASMTP/dibene@usa.net) via mtad (C8.MAIN.3.31J) with ESMTP id 532LeNV5W0352M38; Mon, 14 May 2007 21:56:48 GMT X-USANET-Auth: 151.76.209.169 AUTH dibene@usa.net [192.168.0.2] Message-ID: <4648DB25.6010907@usa.net> Date: Mon, 14 May 2007 23:56:53 +0200 From: Alberto di Bene User-Agent: Thunderbird 1.5.0.10 (Windows/20070221) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <1751305265.20070512104213@gmx.de> <001f01c79479$76cabbe0$0300a8c0@lark> In-Reply-To: X-Enigmail-Version: 0.94.3.0 Z-USANET-MsgId: XID532LeNV5x0352X38 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: 5 WPM Again... 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 Status: O X-Status: X-Keywords: X-UID: 1864 Joe Craig wrote: > > I suspect that ARGO may reference its readings against the background > noise and not be absolute. Running 1000 watts (4.5 amps) to 100m of > wire up 10 m showed a 3 dB advantage over the previous system: 100 watts > to a sloping 100m wire with the far end up 25 metres. > The dBs reported by Argo are relative to the full scale of the ADC converter of the sound card, 0 dB being its saturation level, and so on. Of course that reading is influenced by the position of the level slider in the mixer panel of Windows, and by the setting of the volume knob of the radio... 73 Alberto I2PHD