Return-Path: Received: from rly-mh04.mx.aol.com (rly-mh04.mail.aol.com [172.21.166.140]) by air-mh03.mail.aol.com (v121_r5.5) with ESMTP id MAILINMH033-bca497deed84d; Mon, 26 Jan 2009 12:11:57 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mh04.mx.aol.com (v121_r4.4) with ESMTP id MAILRELAYINMH042-bca497deed84d; Mon, 26 Jan 2009 12:11:53 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1LRUzs-0001fy-DA for rs_out_1@blacksheep.org; Mon, 26 Jan 2009 17:11:40 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1LRUzs-0001fp-16 for rsgb_lf_group@blacksheep.org; Mon, 26 Jan 2009 17:11:40 +0000 Received: from [193.252.22.192] (helo=smtp6.freeserve.com) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1LRUzr-0007og-FT for rsgb_lf_group@blacksheep.org; Mon, 26 Jan 2009 17:11:39 +0000 Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3626.me.freeserve.com (SMTP Server) with ESMTP id 2231270000B6 for ; Mon, 26 Jan 2009 18:11:31 +0100 (CET) Received: from AGB (unknown [91.110.84.191]) by mwinf3626.me.freeserve.com (SMTP Server) with SMTP id A2C6570000BB for ; Mon, 26 Jan 2009 18:11:28 +0100 (CET) X-ME-UUID: 20090126171128666.A2C6570000BB@mwinf3626.me.freeserve.com Message-ID: <976D046F0BF44B39A9CC91C7306E969B@AGB> From: "Graham" To: References: <001c01c97fae$473a2600$0900a8c0@AM> <200901261610460578.3B70C5B6@smtp.wanadoo.fr> <006201c97fcd$5e425b00$0900a8c0@AM> <878CA1EB1E7349DC9464A021BE1B86B0@p4> In-Reply-To: <878CA1EB1E7349DC9464A021BE1B86B0@p4> Date: Mon, 26 Jan 2009 17:11:18 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8050.1202 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8050.1202 X-Karma: unknown: X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: WSPR 502.400 Dial frequency ? 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-IP: 193.82.116.20 Are we to adopt 502.400 Hz USB dial frequency for WSPR ? With 1500 Hz audio centre band tone. RF mid band carrier frequency of 503.900 Hz ? With 6 hz modulation and phase continues tone side bands and guard band are not a issue, the band edge is protected? 504KHz and its sidebands are actually x2 of the fundamental so should not present a problem as the 200 Hz slot is in a close in, dead zone, there amplitude increasing lower into the band, one of the reasons qrss and range testing takes place in this 'noisy' zone. I will add a note to the uk500khz group and links in others with details if acceptable to widen the reporting base. Tnx- Graham G0NBD