Return-Path: Received: from mtain-di07.r1000.mx.aol.com (mtain-di07.r1000.mx.aol.com [172.29.64.11]) by air-de04.mail.aol.com (v129.4) with ESMTP id MAILINDE042-5eaf4d54599fbd; Thu, 10 Feb 2011 16:33:19 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-di07.r1000.mx.aol.com (Internet Inbound) with ESMTP id 0FECB38000163; Thu, 10 Feb 2011 16:33:17 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Pne7r-0002C1-Jp for rs_out_1@blacksheep.org; Thu, 10 Feb 2011 21:32:31 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Pne7r-0002Bs-6r for rsgb_lf_group@blacksheep.org; Thu, 10 Feb 2011 21:32:31 +0000 Received: from imr-da02.mx.aol.com ([205.188.105.144]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Pne7p-0003l2-AF for rsgb_lf_group@blacksheep.org; Thu, 10 Feb 2011 21:32:31 +0000 Received: from mtaout-da01.r1000.mx.aol.com (mtaout-da01.r1000.mx.aol.com [172.29.51.129]) by imr-da02.mx.aol.com (8.14.1/8.14.1) with ESMTP id p1ALWNFt016691 for ; Thu, 10 Feb 2011 16:32:23 -0500 Received: from White (nrbg-4dbe708a.pool.mediaWays.net [77.190.112.138]) by mtaout-da01.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 2D769E00008B for ; Thu, 10 Feb 2011 16:32:20 -0500 (EST) Message-ID: From: "Markus Vester" To: References: <988315.45122.qm@web28515.mail.ukl.yahoo.com> <00c401cbc94c$79b4ca60$0401a8c0@xphd97xgq27nyf> <1404B701DF084CA18C996DD5F5F07952@White> <845577.75831.qm@web28506.mail.ukl.yahoo.com> <6AFD3410-B16D-4871-9F95-97D84E86877C@gmail.com> Date: Thu, 10 Feb 2011 22:32:25 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 12.0.1606 X-MimeOLE: Produced By Microsoft MimeOLE V12.0.1606 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: VLF Transmissions - G3XIZ - 12th / 13th February Content-Type: multipart/alternative; boundary="----=_NextPart_000_0009_01CBC972.63EFDD70" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_40_50,HTML_MESSAGE, 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-sid: 3039ac1d400b4d54599d6966 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none ------=_NextPart_000_0009_01CBC972.63EFDD70 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Chris, what sort of 10 MHz OCXO do you have? The little canned indu= strial types (eg. http://www.kvg-gmbh.de/10.0.html?&L=3D3 ) will stay= within about a couple of ppb over hours, translating to some 10 micro= Hz at VLF.=20 Best 73, Markus (DF6NM) From: Roger Lapthorn=20 Sent: Thursday, February 10, 2011 10:02 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: VLF Transmissions - G3XIZ - 12th / 13th February The stability of "within a few mHz" could be a problem for those of us= using extremely narrow Spectrum Lab settings to dig your signal out= if the noise Chris. This is where absolute locking to a GPS source is= so valuable as one can screw the bandwidth right down. A few mHz coul= d mean the carrier drifts and is not detected. Still, I'll be looking! 73s Roger G3XBM ... ------=_NextPart_000_0009_01CBC972.63EFDD70 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi Chris, what sort of 10 MHz OCXO do= you have? The=20 little canned industrial types (eg. http:/= /www.kvg-gmbh.de/10.0.html?&L=3D3 )=20 will stay within about a couple of ppb=20 over hours, translating to some 10=20 microHz at VLF. 
 
Best 73, Markus (DF6NM)

Sent: Thursday, February 10, 2011 10:02 PM
Subject: Re: LF: VLF Transmissions - G3XIZ - 12th / 13th= =20 February

The stability of "within a few mHz" could be a problem for those= of us=20 using extremely narrow Spectrum Lab settings to dig your signal out if= the noise=20 Chris. This is where absolute locking to a GPS source is so valuable= as one can=20 screw the bandwidth right down. A few mHz could mean the carrier drift= s and is=20 not detected. Still, I'll be looking!

73s
Roger G3XBM

...
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