Return-Path: Received: from mtain-mk03.r1000.mx.aol.com (mtain-mk03.r1000.mx.aol.com [172.29.97.135]) by air-mb08.mail.aol.com (v129.4) with ESMTP id MAILINMB082-a7d84d471997348; Mon, 31 Jan 2011 15:20:39 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mk03.r1000.mx.aol.com (Internet Inbound) with ESMTP id CF8B5380000BA; Mon, 31 Jan 2011 15:20:37 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Pk0DR-00025M-RG for rs_out_1@blacksheep.org; Mon, 31 Jan 2011 20:19:13 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Pk0DQ-00025D-Ic for rsgb_lf_group@blacksheep.org; Mon, 31 Jan 2011 20:19:12 +0000 Received: from 113-mo2-8.acn.waw.pl ([62.121.95.113] helo=paranoid.lipkowski.org) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Pk0DN-00062j-RU for rsgb_lf_group@blacksheep.org; Mon, 31 Jan 2011 20:19:12 +0000 Received: from paranoid.lipkowski.org (localhost [127.0.0.1]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id p0VKJ7Gd002638 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 31 Jan 2011 21:19:07 +0100 Received: from localhost (sq5bpf@localhost) by paranoid.lipkowski.org (8.13.7/8.13.6/Submit) with ESMTP id p0VKJ7MQ002635 for ; Mon, 31 Jan 2011 21:19:07 +0100 X-Authentication-Warning: paranoid.lipkowski.org: sq5bpf owned process doing -bs Date: Mon, 31 Jan 2011 21:19:07 +0100 (CET) From: Jacek Lipkowski To: rsgb_lf_group@blacksheep.org In-Reply-To: <003301cbc163$c542e610$0401a8c0@xphd97xgq27nyf> Message-ID: References: <85896.7619.qm@web28106.mail.ukl.yahoo.com> <003301cbc163$c542e610$0401a8c0@xphd97xgq27nyf> MIME-Version: 1.0 X-Spam-Score-sq5bpf: -2.601 () BAYES_00,SPF_HELO_PASS,SPF_PASS X-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: OT End of the BBC World Service on Shortwave Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed 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: 3039ac1d61874d4719952fa3 X-AOL-IP: 195.171.43.25 X-Mailer: Unknown (No Version) On Mon, 31 Jan 2011, mal hamilton wrote: > You are correct about the Internet being vunerable but you forgot to mention > Broadcast JAMMING which is a regular occurance when your information is not > wanted. This renders the transmitted information useless. a local jammer doesn't work well - groundwave doesn't propagate far. the only way to jam is to bounce your signal off the ionosphere, but you need higher power for that, and the jammer has to be far away (usually in a different country). if the jammed stations work on multiple different frequencies, then you really need a lot of jammers, in different locations, to take varying skip zones into account etc. we had Radio Free Europe etc jammed for many years, and somehow people were still able to listen to it :) VY 73 Jacek / SQ5BPF