Return-Path: Received: from rly-mc03.mx.aol.com (rly-mc03.mail.aol.com [172.21.164.87]) by air-mc03.mail.aol.com (v126.13) with ESMTP id MAILINMC033-d674b18f6941b8; Fri, 04 Dec 2009 06:46:37 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mc03.mx.aol.com (v125.7) with ESMTP id MAILRELAYINMC037-d674b18f6941b8; Fri, 04 Dec 2009 06:46:30 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NGWal-0006MB-RV for rs_out_1@blacksheep.org; Fri, 04 Dec 2009 11:44:55 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NGWal-0006M2-0X for rsgb_lf_group@blacksheep.org; Fri, 04 Dec 2009 11:44:55 +0000 Received: from cmsout01.mbox.net ([165.212.64.31]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NGWai-0004k1-UV for rsgb_lf_group@blacksheep.org; Fri, 04 Dec 2009 11:44:54 +0000 Received: from cmsout01.mbox.net (cmsout01-lo [127.0.0.1]) by cmsout01.mbox.net (Postfix) with ESMTP id B86752AD0E4 for ; Fri, 4 Dec 2009 11:44:45 +0000 (GMT) Received: from cmsapps02.cms.usa.net [165.212.11.138] by cmsout01.mbox.net via smtad (C8.MAIN.3.58V) with ESMTP id XID310NLDLSt9648X01; Fri, 04 Dec 2009 11:44:45 -0000 X-USANET-Source: 165.212.11.138 IN dibene@usa.net cmsapps02.cms.usa.net X-USANET-MsgId: XID310NLDLSt9648X01 Received: from [192.168.1.3] [151.47.209.234] by cmsapps02.cms.usa.net (ESMTPA/dibene@usa.net) via mtad (C8.MAIN.3.53P) with ESMTPA id 345NLDLSr2272M38; Fri, 04 Dec 2009 11:44:43 -0000 X-USANET-Auth: 151.47.209.234 AUTH dibene@usa.net [192.168.1.3] Message-ID: <4B18F629.8050606@usa.net> Date: Fri, 04 Dec 2009 12:44:41 +0100 From: Alberto di Bene User-Agent: Thunderbird 2.0.0.23 (Windows/20090812) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <38A51B74B884D74083D7950AD0DD85E828AAF4@File-Server-HST.hst.e-technik.tu-darmstadt.de> <4B16987B.9000002@usa.net> <4B179DE6.3050608@usa.net> <20091203194531.or926chzk844g4k8@webmail6.kuleuven.be> <4B183595.5060800@usa.net> <4B18C0F9.8060202@telia.com> In-Reply-To: <4B18C0F9.8060202@telia.com> X-Enigmail-Version: 0.96.0 Z-USANET-MsgId: XID345NLDLSS2272X38 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Results of optimising an active antenna 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-IP: 193.82.116.20 X-Mailer: Unknown (No Version) Johan H. Bodin wrote: > Yes, those Trappiste beers are quite interesting, Chimay for example > which is available in different signal strengths (QRP..QRO), but I don't > believe it is possible to get them in metal cans. As a compromise, you > can try to wrap the bottle in metal foil, or, avoid drinking it and > solder the FET gate directly to the bottle's cap. :-) > > 73 > Johan SM6LKM Oh no.... avoiding drinking it would be asking too much.... :-) And G4GVW says : > We may, therefore, suppose that S/N ratios might depend on the number of > samples, their frequency and relative signal strengths. The condition of > the observer should,probably, also be taken into account! Correct... so to reduce the variance, what would be needed is a much greater number of samples so to average out the statistical fluctuations... hmmm, not too bad a task... :-) 73 Alberto I2PHD