Return-Path: Received: from mtain-md08.r1000.mx.aol.com (mtain-md08.r1000.mx.aol.com [172.29.96.92]) by air-di02.mail.aol.com (v126.13) with ESMTP id MAILINDI021-eaba4b5d7b8c175; Mon, 25 Jan 2010 06:07:56 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-md08.r1000.mx.aol.com (Internet Inbound) with ESMTP id 034883800004F; Mon, 25 Jan 2010 06:07:54 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NZMmT-0004K6-R6 for rs_out_1@blacksheep.org; Mon, 25 Jan 2010 11:06:53 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NZMmT-0004Jx-G7 for rsgb_lf_group@blacksheep.org; Mon, 25 Jan 2010 11:06:53 +0000 Received: from smtp-vbr8.xs4all.nl ([194.109.24.28]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NZMmR-0007Gn-Q9 for rsgb_lf_group@blacksheep.org; Mon, 25 Jan 2010 11:06:53 +0000 Received: from webmail.xs4all.nl (dovemail14.xs4all.nl [194.109.26.16]) by smtp-vbr8.xs4all.nl (8.13.8/8.13.8) with ESMTP id o0PB6gBk097220 for ; Mon, 25 Jan 2010 12:06:51 +0100 (CET) (envelope-from roelof@ndb.demon.nl) Received: from 82.92.124.189 (SquirrelMail authenticated user pa0rdt) by webmail.xs4all.nl with HTTP; Mon, 25 Jan 2010 12:06:51 +0100 Message-ID: In-Reply-To: <6B20C5A86EA54AF3A298CCA35D49282B@ns94d01ae4d850> References: <6B20C5A86EA54AF3A298CCA35D49282B@ns94d01ae4d850> Date: Mon, 25 Jan 2010 12:06:51 +0100 From: "Roelof Bakker" To: rsgb_lf_group@blacksheep.org User-Agent: SquirrelMail/1.4.18 MIME-Version: 1.0 X-Virus-Scanned: by XS4ALL Virus Scanner X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: 509KHZ CAPTURE Z and BL 25-01.jpg Content-Type: text/plain;charset=iso-8859-1 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: 3039ac1d605c4b5d7b8a3243 X-AOL-IP: 193.82.116.20 Content-Transfer-Encoding: quoted-printable X-Mailer: Unknown (No Version) Hello Henny, I see on your sceenshot that BL-410 has an extra "E". This indicates that it is operating on its back up transmitter. All NDB's have a back up transmitter that automatically is switched on when the main transmitter develops a fault. Monitoring stations will spot the "E" and have some maintenance personel directed to the transmitter site. 73, Roelof, pa0rdt