Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-ma03.r1000.mx.aol.com (Internet Inbound) with ESMTP id E814A3800008C; Thu, 2 Aug 2012 20:16:50 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Sx5YI-0004wc-UV for rs_out_1@blacksheep.org; Fri, 03 Aug 2012 01:15:38 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Sx5YI-0004wT-9W for rsgb_lf_group@blacksheep.org; Fri, 03 Aug 2012 01:15:38 +0100 Received: from smtpout5.wanadoo.co.uk ([80.12.242.80] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1Sx5YG-00009M-M7 for rsgb_lf_group@blacksheep.org; Fri, 03 Aug 2012 01:15:37 +0100 Received: from AGB ([2.26.30.57]) by mwinf5d61 with ME id i0Fc1j0041DwTEA030FcsZ; Fri, 03 Aug 2012 02:15:36 +0200 Message-ID: <5C67AA6CF0F646C5B9CE7B7AE37C8727@AGB> From: "Graham" To: References: <92D81B6908F149209BE5590D57E20F98@AGB> <003e01cd70fd$d93cf520$8d01a8c0@JAYDELL> <22B513E4E3454733A7EFF26AB4CAC0FE@AGB> <501B0E36.1040502@charter.net> <721C360CFAE34E9F936AD8C0E92F624D@AGB> <501B12E4.4090101@charter.net> In-Reply-To: <501B12E4.4090101@charter.net> Date: Fri, 3 Aug 2012 01:15:36 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: R John I gave up testing in the end , one minute wspr decodes , the next Op over the same path , even 2 or 3 dB qsb over a 25 mile path to Gary g4wgt from my qth ....... tests in the past with 3 tones over longer paths 100 Hz apart , showed selective fades , so even running 2 modes in parallel did not always give a true picture , could loose one of the tones for quite a while as well , at 75 miles out this was quite visible . [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [80.12.242.80 listed in list.dnswl.org] X-Scan-Signature: 046f068074e745d5c60ca47deee9b503 Subject: Re: LF: Re: ALL de WE3XGR (United States): Beacon Op4 ..>>>>QRG ???<<< Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=response 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: 0:2:391438432:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d600b501b187260b2 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none R John I gave up testing in the end , one minute wspr decodes , the next Op over the same path , even 2 or 3 dB qsb over a 25 mile path to Gary g4wgt from my qth ....... tests in the past with 3 tones over longer paths 100 Hz apart , showed selective fades , so even running 2 modes in parallel did not always give a true picture , could loose one of the tones for quite a while as well , at 75 miles out this was quite visible . Op is a averaging system , with integration and non linear routines (anti qrm /static) used to recover the signal from the 'noise' with a numerical digital filter to detect the pulse envelope , so it will take advantage of bursts , rn3agc , using a sdr on 136 is getting some very low s/n decodes , I think partly as the sdr is presenting the 'dsp' engine with the least modified signal to process 73 -G -------------------------------------------------- From: "John Andrews" Sent: Friday, August 03, 2012 12:53 AM To: Subject: Re: LF: Re: ALL de WE3XGR (United States): Beacon Op4 ..>>>>QRG ???<<< > Graham > >> what modes are you checking ? > > OP4 and WSPR tonight. The combination of the 72 mile path and plenty of > high-angle radiation from my xmit loop makes for a pretty intense roller > coaster in the evening. At least the thunderstorm activity is a little > farther away tonight. Between the stuff on and offshore, it has been > pretty noisy lately. > > John, W1TAG >