Return-Path: Received: (qmail 15531 invoked from network); 25 Feb 2005 11:13:21 -0000 Received: from unknown (HELO ptb-spamcore02.plus.net) (192.168.71.3) by ptb-mailstore01.plus.net with SMTP; 25 Feb 2005 11:13:21 -0000 Received: from mailnull by ptb-spamcore02.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1D4dQV-000OQb-K4 for dave@picks.force9.co.uk; Fri, 25 Feb 2005 11:14:32 +0000 Received: from [192.168.67.1] (helo=ptb-mxcore01.plus.net) by ptb-spamcore02.plus.net with esmtp (Exim 4.32; FreeBSD) id 1D4dQV-000OQX-Cb for dave@picks.force9.co.uk; Fri, 25 Feb 2005 11:14:31 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (Exim) id 1D4dRH-00014L-2f for dave@picks.force9.co.uk; Fri, 25 Feb 2005 11:15:19 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1D4dJd-0002TS-PE for rs_out_1@blacksheep.org; Fri, 25 Feb 2005 11:07:25 +0000 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1D4dJd-0002TJ-Ey for rsgb_lf_group@blacksheep.org; Fri, 25 Feb 2005 11:07:25 +0000 Received: from mailout.zetnet.co.uk ([194.247.47.231]) by relay.thorcom.net with esmtp (Exim 4.43) id 1D4dJZ-0006Xu-VS for rsgb_lf_group@blacksheep.org; Fri, 25 Feb 2005 11:07:25 +0000 Received: from irwell.zetnet.co.uk ([194.247.47.48] helo=zetnet.co.uk) by mailout.zetnet.co.uk with esmtp (Exim 3.36 #1 (Debian)) id 1D4dJT-0004R7-00 for ; Fri, 25 Feb 2005 11:07:15 +0000 Received: from john-b5a82ea1a4 (bts-0966.dialup.zetnet.co.uk [194.247.51.198]) by zetnet.co.uk (8.12.11/8.12.11/Debian-5) with ESMTP id j1PB75Zj029433 for ; Fri, 25 Feb 2005 11:07:14 GMT Message-ID: <200502251107010545.290C22E6@mail.zetnet.co.uk> In-Reply-To: <421D8E74.7000107@otenet.gr> References: <8b.21a83e11.2f4cc635@aol.com> <00a801c51907$4ecab4a0$1e540150@p2300> <200502222117460938.1BC838F7@mail.zetnet.co.uk> <421D8E74.7000107@otenet.gr> X-Mailer: Courier 3.50.00.09.1098 (http://www.rosecitysoftware.com) (K) Date: Fri, 25 Feb 2005 11:07:01 +0000 From: "John Rabson" To: rsgb_lf_group@blacksheep.org Mime-Version: 1.0 X-SPF-Result: relay.thorcom.net: 194.247.47.231 is neither permitted nor denied by domain of zetnet.co.uk X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=failed,none Subject: LF: Off Topic 807s in receivers (was Ft101zd) Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com 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-Spam-Filtered: by PlusNet SpamCORE (v3.00) I first heard about this from G3VA. I believe he wrote about this in his monthly RADCOM column Technical Topics years ago. It may also be in one of the histories of the Bletchley Park, Hanslope Park or some other part of World War II radio monitoring. I will see what I can find. 73 John