Return-Path: Received: (qmail 86118 invoked from network); 13 Mar 2005 13:22:43 -0000 Received: from unknown (HELO ptb-spamcore02.plus.net) (192.168.71.3) by ptb-mailstore04.plus.net with SMTP; 13 Mar 2005 13:22:43 -0000 Received: from mailnull by ptb-spamcore02.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1DAT6x-000PWF-Dr for dave@picks.force9.co.uk; Sun, 13 Mar 2005 13:26:29 +0000 Received: from [192.168.67.1] (helo=ptb-mxcore01.plus.net) by ptb-spamcore02.plus.net with esmtp (Exim 4.32; FreeBSD) id 1DAT6w-000PVs-86 for dave@picks.force9.co.uk; Sun, 13 Mar 2005 13:26:26 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (Exim) id 1DAT5v-0002dZ-Mh for dave@picks.force9.co.uk; Sun, 13 Mar 2005 13:25:23 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1DAT2f-0000Mv-Nv for rs_out_1@blacksheep.org; Sun, 13 Mar 2005 13:22:01 +0000 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1DAT2f-0000Mm-Cy for rsgb_lf_group@blacksheep.org; Sun, 13 Mar 2005 13:22:01 +0000 Received: from cas-mta4-fe.casema.nl ([83.80.1.32] helo=mta.casema.nl) by relay.thorcom.net with esmtp (Exim 4.43) id 1DAT2e-0006wT-4d for rsgb_lf_group@blacksheep.org; Sun, 13 Mar 2005 13:22:01 +0000 Received: from s9z5i6.casema.nl ([83.85.106.243]) by cas-mta4.mgmt.casema.nl (Sun Java System Messaging Server 6.1 HotFix 0.11 (built Jan 28 2005)) with ESMTP id <0IDA000HHL46UD50@cas-mta4.mgmt.casema.nl> for rsgb_lf_group@blacksheep.org; Sun, 13 Mar 2005 14:21:50 +0100 (CET) Date: Sun, 13 Mar 2005 14:06:27 +0100 From: Dick Rollema X-Sender: dickrollema@casema.nl@mail.casema.nl (Unverified) To: LF-Group Message-id: <6.1.0.6.2.20050313140217.02802ce0@mail.casema.nl> MIME-version: 1.0 X-Mailer: QUALCOMM Windows Eudora Version 6.1.0.6 X-SPF-Result: relay.thorcom.net: 83.80.1.32 is neither permitted nor denied by domain of casema.nl X-Spam-Score: 0.1 (/) X-Spam-Report: autolearn=failed,FORGED_RCVD_HELO=0.05 Subject: LF: Off topic 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) Many thanks to all who responded to my query about the break down voltage of a spark gap. I now have more than enough info to continue my article on the early work of Marconi. 73, Dick, PA0SE