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 3354838000096; Thu, 2 Feb 2012 16:41:45 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Rt4Oj-0002nW-RW for rs_out_1@blacksheep.org; Thu, 02 Feb 2012 21:40:53 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Rt4Oj-0002nH-25 for rsgb_lf_group@blacksheep.org; Thu, 02 Feb 2012 21:40:53 +0000 Received: from mk-filter-3-a-1.mail.tiscali.co.uk ([212.74.100.54] helo=mk-filter-3-a-1.mail.uk.tiscali.com) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Rt4Oh-00084e-Me for rsgb_lf_group@blacksheep.org; Thu, 02 Feb 2012 21:40:53 +0000 X-Trace: 725834405/mk-filter-3.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: Av8EAMMBK09YaCMT/2dsb2JhbABDrxGBBoFyAQEEAQgwHhEXBgEEBQMDEQQBAQolMwYWCAYTCAmHawO4L4tRASkOAQIGCRoPBgQBgm+BKgEDAQQlARWCOWMEiA+SWI0R X-IronPort-AV: E=Sophos;i="4.73,348,1325462400"; d="scan'208";a="725834405" 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 21:40:45 +0000 Message-ID: <148FF7947DDE4D2F827B9629646597B0@GaryPC> From: "Gary G4WGT" To: References: <4F2AF61C.00002D.04364@BOB-PC> <49A09117B8F441CD8818AC2781B85FC3@JimPC> In-Reply-To: <49A09117B8F441CD8818AC2781B85FC3@JimPC> Date: Thu, 2 Feb 2012 21:40:45 -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: New to group 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: 0:2:430384352:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d404b4f2b03192254 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Jim & all, >>>>I think you mean it should be 10.136 USB; to get signals centred on >>>>137.5kHz to an audio output of 1.5kHz, the carrier should be at 136.0kHz That is the way I do it with my 4.0MHz local osc converter....4.136 USB on the receiver dial. 73, Gary - G4WGT. ----- Original Message ----- From: "James Moritz" To: Sent: Thursday, February 02, 2012 9:31 PM Subject: Re: LF: New to group > Dear Bob, Graham, > > I think you mean it should be 10.136 USB; to get signals centred on > 137.5kHz to an audio output of 1.5kHz, the carrier should be at 136.0kHz > > Also, when using a converter, it would be worth checking the frequency > accuracy of the 10MHz conversion oscillator - it should be no more than a > few 10s of hertz out if there is not to be serious mis-alignment beteen > the expected and actual received frequencies, considering the slower Op32 > "band" is only 100Hz wide. The RX frequency can be offset slightly to > compensate for an error in the converter frequency (or for an error in the > RX frequency, for that matter...). > > Cheers, Jim Moritz > 73 de M0BMU >