Return-Path: Received: from rly-db07.mx.aol.com (rly-db07.mail.aol.com [172.19.130.82]) by air-db10.mail.aol.com (v124.15) with ESMTP id MAILINDB102-ad64a5841e5219; Sat, 11 Jul 2009 03:40:45 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-db07.mx.aol.com (v124.15) with ESMTP id MAILRELAYINDB074-ad64a5841e5219; Sat, 11 Jul 2009 03:40:23 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1MPXAb-0007Y7-Gp for rs_out_1@blacksheep.org; Sat, 11 Jul 2009 08:38:53 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1MPXAb-0007Xy-1X for rsgb_lf_group@blacksheep.org; Sat, 11 Jul 2009 08:38:53 +0100 Received: from mail-fx0-f222.google.com ([209.85.220.222]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1MPXAT-0003nH-KD for rsgb_lf_group@blacksheep.org; Sat, 11 Jul 2009 08:38:46 +0100 Received: by fxm22 with SMTP id 22so1362876fxm.4 for ; Sat, 11 Jul 2009 00:38:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type :content-transfer-encoding; bh=ozLHIogbaF9qPxfR3BM5MIDmRsUJe2/ve5oLVL2bp6Y=; b=hj64PxcAHrjzuHfpI+5GwE6ZBBTEjhaFIYzfnhWe9jiHmczkM/Mlp2yrIT2En54b+L mM4WHNI4OEq2a0tXhrNVFrrjG3623g9rQq1M7Oo+Piiq4Nmlj7qGFgC9eaZkLXjTYfNE Za1SMu2ym4qz8j0MSgUcTNAvCuvX1b63D20nk= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; b=IwLL7Ew+xGT+mBXfrxre/f1Yho0MHVS7MAMeUX+WHaIvCrjEf4EF9NqYj4uLA44T0s fDzjs9NAPW/q6ldToTKMBf6QRhQu2PCKj0MZt109809JzFbOV1Z8HdpMgHWUmtuyOYRk LV5VOseq45c7kkZQ1mhQg++lRqy/ytze8kmoM= MIME-Version: 1.0 Received: by 10.239.156.144 with SMTP id m16mr244382hbc.133.1247297924804; Sat, 11 Jul 2009 00:38:44 -0700 (PDT) In-Reply-To: References: <8bf118410907100011s696aa712sbd88bd3a023e1c39@mail.gmail.com> Date: Sat, 11 Jul 2009 08:38:44 +0100 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org X-Karma: unknown: DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Forthcoming GPS jamming exercises/Loran Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable 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-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d288.2 ; domain : googlemail.com DKIM : pass X-Mailer: Unknown (No Version) Yes, and its a lot more difficult to knock out GPS this way. A cruise missile carrying a small nuclear warhead on each of the two (or more ?) ground control stations perhaps :-) Andy G4JNT wobbleU cubed .g4jnt.kom 2009/7/11 Laurence BY3A-KL1X China : > Talking of jamming Loran brings back memories in the 70's of "attacking"= a > Decca site in the Eastern counties defended by Gurkhas' as a night exerc= ise. > I came across some photos the other day of said installation I must have > taken around that time - and for what I can remember the idea was to pla= ce a > small amount of C4 or shaped charge on one or two items and definately= not > get captured in the process. > > Given the lack of security of some of the Loran sites Im guessing the be= st > denial of Service would be a lump of plastic or very large bolt cutters= on a > couple of guys..or perhaps knocking out the=A0 remote mon receiver or sp= oofing > a small signal..must be easier than raising a 400m mast. > > LF and MF very noisy here due to Moonsoons at the moment. > > Laurence 9V1 LF > Rainy Singpore > >