Return-Path: Received: from mtain-mp08.r1000.mx.aol.com (mtain-mp08.r1000.mx.aol.com [172.29.193.76]) by air-da05.mail.aol.com (v129.4) with ESMTP id MAILINDA053-863d4d4060af20e; Wed, 26 Jan 2011 12:58:07 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mp08.r1000.mx.aol.com (Internet Inbound) with ESMTP id 4B68F38000103; Wed, 26 Jan 2011 12:58:05 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Pi9cS-0002a1-Qp for rs_out_1@blacksheep.org; Wed, 26 Jan 2011 17:57:24 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Pi9cS-0002Zr-Ei for rsgb_lf_group@blacksheep.org; Wed, 26 Jan 2011 17:57:24 +0000 Received: from out1.ip08ir2.opaltelecom.net ([62.24.128.244]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Pi9cQ-0007Ox-MO for rsgb_lf_group@blacksheep.org; Wed, 26 Jan 2011 17:57:24 +0000 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ApUGADvvP01cEYd9/2dsb2JhbACIT44JjiBzvR2FTwSQCg X-IronPort-AV: E=Sophos;i="4.60,381,1291593600"; d="scan'208";a="477951098" Received: from unknown (HELO xphd97xgq27nyf) ([92.17.135.125]) by out1.ip08ir2.opaltelecom.net with SMTP; 26 Jan 2011 17:57:15 +0000 Message-ID: <007501cbbd82$73ebc320$0401a8c0@xphd97xgq27nyf> From: "mal hamilton" To: References: <4D3FEDB4.25085.220078F8@jurgenb2.3sdesign.de> <4D404EE1.1040108@legal-medicine.de> Date: Wed, 26 Jan 2011 17:57:09 -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: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Plot made in N.Germany until 0700z Content-Type: text/plain; charset="iso-8859-1" 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=0.0 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-sid: 3039ac1dc14c4d4060ad66dc X-AOL-IP: 195.171.43.25 I refer you to a previous msg of mine a few days ago about Images. Looking at a broad band spectrum one cannot distinguish between genuine signals and IMAGES. I described how to distinguish the genuine signal from an IMAGE by using a narrow band RX and tuning the spectrum of interest and watching on a spectrum display. Profession Radio Officers are familiar with this procedure but Appliance Operators are not. de G3KEV ----- Original Message ----- From: "pws" To: Sent: Wednesday, January 26, 2011 4:42 PM Subject: Re: LF: Plot made in N.Germany until 0700z > Hi again Jurgen, > > You wrote: > > ... > > The 20kHz line seems to be a product of SpecLab using Perseus > > ... > > It's a "ghost" of MSF, 60 kHz, which is incredible strong over there. > All other signals appear twice in your plot shifted by +20 kHz. > > I don't know what happend since I do not know (in depth) Perseus and SpecLab. > > Peter >