Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mh02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 8579B38000101; Wed, 25 Jul 2012 13:41:11 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Su5Yo-0003L1-VP for rs_out_1@blacksheep.org; Wed, 25 Jul 2012 18:39:46 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Su5Yo-0003Ks-8v for rsgb_lf_group@blacksheep.org; Wed, 25 Jul 2012 18:39:46 +0100 Received: from out1.ip06ir2.opaltelecom.net ([62.24.128.242]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1Su5Ym-00066o-G0 for rsgb_lf_group@blacksheep.org; Wed, 25 Jul 2012 18:39:45 +0100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgAFAGsSEFBcF/3L/2dsb2JhbABFuWKBCIIbBQEBBAEIAQEDJQEjAiYGAQEDBQIBAxEEAQEKJRQBBBoGFggGEwoBAgIBAYdtAwYKB6xUhS8LiUwEi02DWIMcA4gZhUGXfIJf X-IronPort-AV: E=Sophos;i="4.77,653,1336345200"; d="scan'208";a="546161191" Received: from host-92-23-253-203.as13285.net (HELO xphd97xgq27nyf) ([92.23.253.203]) by out1.ip06ir2.opaltelecom.net with SMTP; 25 Jul 2012 18:39:43 +0100 Message-ID: <004f01cd6a8c$7566a7c0$0401a8c0@xphd97xgq27nyf> From: "mal hamilton" To: References: <500FF064.1030109@iup.uni-heidelberg.de> <500FFDDD.6070204@iup.uni-heidelberg.de> <16CA55FCF4C44B789AA114D2CCB51D1B@AGB> Date: Wed, 25 Jul 2012 17:39:35 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Spam-Score: 3.1 (+++) 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: Graham es Co While Opera es other data modes are an alternative to CW for a change they need another level of demodulation and cannot really compete with the basic CW mode or QRSS CW. I often see traces of all data modes that could easily be identified in QRSS but they do not decode therefore the purpose of the transmission is lost. de mal/g3kev [...] Content analysis details: (3.1 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [62.24.128.242 listed in list.dnswl.org] 1.0 FSL_XM_419 Old OE version in X-Mailer only seen in 419 spam -0.0 SPF_PASS SPF: sender matches SPF record 0.4 FSL_UA FSL_UA 1.7 AXB_XMAILER_MIMEOLE_OL_024C2 AXB_XMAILER_MIMEOLE_OL_024C2 X-Scan-Signature: c0e6e8bcdc231effb9da2003d606d9a2 Subject: Re: LF: 4X OP32 report Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit 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-SCOLL-SCORE: 0:2:479391424:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d60d650102fb75fdc X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Graham es Co While Opera es other data modes are an alternative to CW for a change they need another level of demodulation and cannot really compete with the basic CW mode or QRSS CW. I often see traces of all data modes that could easily be identified in QRSS but they do not decode therefore the purpose of the transmission is lost. de mal/g3kev ----- Original Message ----- From: "Graham" To: Sent: Wednesday, July 25, 2012 4:07 PM Subject: Re: LF: 4X OP32 report > schrieb Stefan, :) > > Why do you think so? > > Its linked to the DSP engine in Op , there is a timing issue , if > other applications lock the sound card at a different rate , due to > the % tolerances , low level decodes can be lost , noting, Op is a > 'data mode , so the overheads in the transmission are much higher , > as are the DSP engine requirements , as can be seen with 'older' pc's > cpu loading can be a issue , as is a one-pass system , all the > processing is taking place in real time > > But on with the show , > > 73 -G.. > > -76 dB in 28 mHz b/w , what is that when translated to 2.5Khz > B/w ? > > > > > -------------------------------------------------- > From: "Stefan Schäfer" > Sent: Wednesday, July 25, 2012 3:08 PM > To: > Subject: Re: LF: 4X OP32 report > > > > > Am 25.07.2012 15:51, schrieb Graham: > >> > >> Pity nothing decoded in the US last night , but signal 's in 1500 > >> /2000 mile range where quite substantial ... > >> from this , it seems that propagation on 136 is really linked to the > >> seasons ? > > > > Yes (of course) and no. W1VD received me quite well a few weeks ago, see > > https://dl.dropbox.com/u/19882028/LF/07_July2012.jpg > > Not to forget W1TAG: > > https://dl.dropbox.com/u/19882028/LF/DK7FC_Juli2012.jpg > > > > So there is some propagation in summer but of course it depends on the > > solar activity. Don't know how the condx have been yesterday. > > > >> One point from previous trials , If Spec-lab is used with Opera > >> , then SL must be set to 48Khz sample rate , or OP can loose low > >> level decode sensitivity. > > Why do you think so? As long as the frequency range of a SSB bandwidth at > > audio levels passes through the SL filter, then it should be fine. So 8 > > kHz SR should be fine. Of course it depends on which shift frequency you > > have to use. I have to use 11 kHz shift and so i choosed a SR of 30 kHz. > > > > > > 73, Stefan > > >