Envelope-to: dave@picks.force9.co.uk Delivery-date: Sat, 07 Jan 2006 19:13:39 +0000 Received: by ptb-mxcore02.plus.net with spam-scanned (PlusNet MXCore v2.00) id 1EvJVS-0003Et-Im for dave@picks.force9.co.uk; Sat, 07 Jan 2006 19:13:39 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore02.plus.net with esmtp (PlusNet MXCore v2.00) id 1EvJVS-0003Ec-Ep for dave@picks.force9.co.uk; Sat, 07 Jan 2006 19:13:38 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1EvJUh-0007fZ-SF for rs_out_1@blacksheep.org; Sat, 07 Jan 2006 19:12:51 +0000 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1EvJUh-0007fM-5P for rsgb_lf_group@blacksheep.org; Sat, 07 Jan 2006 19:12:51 +0000 Received: from smtpout0151.sc1.cp.net ([64.97.136.151] helo=n082.sc1.cp.net) by relay2.thorcom.net with esmtp (Exim 4.51) id 1EvK0Q-0007FR-Eg for rsgb_lf_group@blacksheep.org; Sat, 07 Jan 2006 19:45:39 +0000 Received: from l8p8y6 (62.252.232.11) by n082.sc1.cp.net (7.2.069.1) id 43BEE88E0000ECA4 for rsgb_lf_group@blacksheep.org; Sat, 7 Jan 2006 19:10:56 +0000 Message-ID: <001801c613be$0b8027e0$0be8fc3e@l8p8y6> From: "hamilton mal" To: rsgb_lf_group@blacksheep.org References: <001b01c60f2a$57d5a4a0$80648351@w4o8m9> <002801c60f9c$88e40ec0$6401a8c0@JAYTERMINAL> <000a01c60fb3$dd8ce980$cce4fc3e@l8p8y6> <001b01c60fc1$c1f37320$6401a8c0@JAYTERMINAL> <000901c60ffc$48c541a0$92198351@w4o8m9> <001201c6137d$2619c2a0$53e4fc3e@l8p8y6> <001f01c6138c$04aaf620$986a8351@w4o8m9> Date: Sat, 7 Jan 2006 19:10:03 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4807.1700 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4807.1700 Subject: LF: Re: Re: Re: Re: TA 2 JAN 06 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit 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) ----- Original Message ----- From: "James Moritz" To: Sent: Saturday, January 07, 2006 1:12 PM Subject: LF: Re: Re: Re: TA 2 JAN 06 > Dear Mal, LF Group, > > Yes, that sounds like it. At your QTH, you are considerably further from > Rugby and Lessay than stations in SE England, so I would expect the noise > level to be considerably lower than it is here. Also, both stations are in > roughly the same direction, approximately south from you, so your loop > should do a pretty good job of nulling both Lorans. Here, the bearings > differ by about 100degrees, roughly NW and SW, so the more complicated > noise-cancelling system that I have mentioned before, that phases together a > loop and a vertical to get two "steerable" nulls is needed. This is doing > quite a good job for stations in directions from 0 to 180 degrees from here, > but of course gives a fair amount of cancellation of any wanted signals > arriving from the west. > > > Tnx Jim. I can understand the problems some are having nearer RUGBY. If this continues it might render 137 khz unworkable. I also notice other HF bands are suffering qrm from pulse type transmissions, perhaps the days of LF-HF are numbered and time to shift to the VHF/UHF bands and Satellite communications. 73 de Mal/G3KEV