Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 65D1838000094; Thu, 2 Feb 2012 16:41:50 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Rt4EX-0002Wr-1d for rs_out_1@blacksheep.org; Thu, 02 Feb 2012 21:30:21 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Rt4EW-0002Wi-KB for rsgb_lf_group@blacksheep.org; Thu, 02 Feb 2012 21:30:20 +0000 Received: from mk-filter-2-a-1.mail.tiscali.co.uk ([212.74.100.53] helo=mk-filter-2-a-1.mail.uk.tiscali.com) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Rt4EU-0007u1-8n for rsgb_lf_group@blacksheep.org; Thu, 02 Feb 2012 21:30:20 +0000 X-Trace: 725605184/mk-filter-2.mail.uk.tiscali.com/B2C/$b2c-THROTTLED-DYNAMIC/b2c-CUSTOMER-DYNAMIC-IP/88.104.35.19/None/g4wgt@tiscali.co.uk X-SBRS: None X-RemoteIP: 88.104.35.19 X-IP-MAIL-FROM: g4wgt@tiscali.co.uk X-SMTP-AUTH: X-Originating-Country: GB/UNITED KINGDOM X-MUA: Microsoft Windows Mail 6.0.6002.18197Produced By Microsoft MimeOLE V6.1.7601.17609 X-IP-BHB: Once X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Av8EAEb/Kk9YaCMT/2dsb2JhbABDrxWBBoFyAQEFCDAeLgEEBQMDEQQBAQEJJSESBhYIBhMICYdusn+HeINZASkOAQIGCRoPBgQBgm+BKgEDAQQlARWCOWMEiA+SWIVEh00 X-IronPort-AV: E=Sophos;i="4.73,348,1325462400"; d="scan'208";a="725605184" Received: from 88-104-35-19.dynamic.dsl.as9105.com (HELO GaryPC) ([88.104.35.19]) by smtp.tiscali.co.uk with SMTP; 02 Feb 2012 21:30:10 +0000 Message-ID: From: "Gary G4WGT" To: References: <372EEAF266214ECDB1E430B737F510BA@GaryPC> In-Reply-To: Date: Thu, 2 Feb 2012 21:30:09 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.1.7601.17609 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: RE: Opera weak signal Rx Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original 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=0.1 required=5.0 tests=MISSING_OUTLOOK_NAME 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: 0:2:470508928:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d404b4f2b031e231c X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Hi Andy & Rik, This is apparently the limit for Op32, it is the weakest report I have seen never mind received so it deserved some recognition. Thanks for comments from both of you. 73, Gary - G4WGT. ----- Original Message ----- From: "Andy Talbot" To: Sent: Thursday, February 02, 2012 9:18 PM Subject: Re: LF: RE: Opera weak signal Rx Isn't -41dB about right for OP32? 8.192 seconds per symbol, = 0.122Hz, = 43dB down on 2500Hz. So +2dB on Noise bandwidth. Couple of dB low perhaps, but not far out 'jnt On 2 February 2012 21:06, Rik Strobbe wrote: > Gary, > > in the little test I did earlier today (sending only the last 96 bits) > I noticed that Opera reported -38dB while the real SNR was about +15dB. > I assume that the SNR value gets wrong as a part of the bits get lost (eg. > QSB). > In addition Opera gives a 4dB lower value than WSPR. > The combination may explain -41dB. > > 73, Rik ON7YD > > ________________________________ > Van: owner-rsgb_lf_group@blacksheep.org > [owner-rsgb_lf_group@blacksheep.org] > namens Gary G4WGT [g4wgt@tiscali.co.uk] > Verzonden: donderdag 2 februari 2012 21:59 > Aan: O_P_E_R_A_@yahoogroups.com; LF Group > Onderwerp: LF: Opera weak signal Rx > > Hi All, > > Amazing Opera decode of weak signal at -41dB :- > > 20:38 136 UA4WPF de G4WGT Op32 3462 km -41 dB in IO83qo, nr Preston. > > 73, Gary - G4WGT.