Envelope-to: dave@picks.force9.co.uk Delivery-date: Wed, 22 Jun 2005 19:25:44 +0100 Received: by ptb-mxcore01.plus.net with spam-scanned (PlusNet MXCore v2.00) id 1Dl9ux-0006ut-KI for dave@picks.force9.co.uk; Wed, 22 Jun 2005 19:25:44 +0100 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (PlusNet MXCore v2.00) id 1Dl9ux-0006uZ-G0 for dave@picks.force9.co.uk; Wed, 22 Jun 2005 19:25:43 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Dl9ug-0008Jd-0Y for rs_out_1@blacksheep.org; Wed, 22 Jun 2005 19:25:26 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Dl9uf-0008JU-LA for rsgb_lf_group@blacksheep.org; Wed, 22 Jun 2005 19:25:25 +0100 Received: from imo-d20.mx.aol.com ([205.188.139.136]) by relay1.thorcom.net with esmtp (Exim 4.51) id 1Dl9xj-0002GI-Ve for rsgb_lf_group@blacksheep.org; Wed, 22 Jun 2005 19:28:39 +0100 Received: from MarkusVester@aol.com by imo-d20.mx.aol.com (mail_out_v38_r1.7.) id l.209.383feca (1320) for ; Wed, 22 Jun 2005 14:25:14 -0400 (EDT) From: MarkusVester@aol.com Message-ID: <209.383feca.2feb070a@aol.com> Date: Wed, 22 Jun 2005 14:25:14 EDT To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 X-Mailer: 8.0 for Windows sub 6104 Subject: LF: Rugby Loran off air Content-Type: text/html; charset=windows-1252 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-PN-SpamFiltered: by PlusNet MXCore (v2.00) Content-transfer-encoding: 8bit ... yes Jim, the trace ended at about 16:00 today.

David, regarding a notch filter at the TX site - at 36% frequency offset this should be quite feasible, even though the design would probably have to be tweaked carefully to preserve the shape of the rising pulse edge, in the presence of reflections both from the antenna and the transmitter output stage. Some of these effects could possibly be compensated by predistorting the driving waveform - looks like an interesting engineering exercise. Have such filters been implemented at Loran sites before, perhaps to protect other services?

Markus, DF6NM

In einer eMail vom 22.06.2005 20:03:54 Westeuropäische Sommerzeit schreibt james.moritz@btopenworld.com:

Dear LF Group,

The Rugby Loran seems to have gone away again for the time being...

Cheers, Jim Moritz
73 de M0BMU