Return-Path: Received: (qmail 12320 invoked from network); 15 Dec 2003 16:33:55 -0000 Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by ptb-mailstore01.plus.net with SMTP; 15 Dec 2003 16:33:55 -0000 Received: (qmail 9338 invoked from network); 15 Dec 2003 16:34:03 -0000 X-Filtered-by: Plusnet (hmail v1.01) X-Spam-detection-level: 11 Received: from post.thorcom.com (193.82.116.20) by warrior.services.quay.plus.net with SMTP; 15 Dec 2003 16:33:51 -0000 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1AVvef-0005kk-4I for rs_out@blacksheep.org; Mon, 15 Dec 2003 16:33:09 +0000 Received: from [212.77.101.160] (helo=smtp.wp.pl) by post.thorcom.com with esmtp (Exim 4.14) id 1AVvee-0005kb-9e for rsgb_lf_group@blacksheep.org; Mon, 15 Dec 2003 16:33:08 +0000 Received: (WP-SMTPD 16573 invoked from network); 15 Dec 2003 16:32:37 -0000 Received: from miglanc.socrates.org.pl (HELO lubon) (sq5bpm@[194.181.189.2]) (envelope-sender ) by smtp.wp.pl (wp-smtpd) with SMTP for ; 15 Dec 2003 16:32:37 -0000 X-Bad-Message-ID: no DNS (lubon) Message-ID: <003701c3c328$d8b89730$2701a8c0@lubon> From: "Marek SQ5BPM" To: rsgb_lf_group@blacksheep.org References: <141.1ebd538e.2d0f2a42@aol.com> Date: Mon, 15 Dec 2003 17:31:08 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Antivirus: skaner antywirusowy poczty Wirtualnej Polski S. A. X-WP-ChangeAV: 0 Subject: LF: Re: LF QSO. Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on post.thorcom.com X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 X-SA-Exim-Scanned: Yes Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-Spam-Rating: 2 > > At breakfast time this morning I looked down the garden &saw half the top > > loading wires on the antenna were hanging down the side of my metal > > telescopic mast, a support line had broken. I will endevour to carry out a > > repair today (monday 15th if my work schedule allows)& be back on again > > soon > > Congratulations on the first QSO Gary........and welcome to the world of high > voltages on your antenna......Best avoid 'braided' polypropylene etc as water > gets trapped between the fibres. A good glass or ceramic insulator or > similar should be reliable. I look forward to hearing you on the band. > A story from my last activity on 6/7 December: The LF antenna cable in our club goes through the window - all other HF cables go through the ventilation chimney, but for this antenna it is simply impossible. I've been transmitting ca. 400W RF and my friend Artur came into the club. I was too late to say "be careful" as he walked to the window and opened it, the cable fell down onto the window-sill (which has some metal parts, probably partially grounded through the wall). The only thing I saw before I pressed Cancel in QRSS was a bright, blue light of sparks. Fortunately Artur did not touch the cable itself and did not get injured... Now there is a nice circle, 1cm in diameter, burned on the window-sill... Apart of that, nothing happened to anyone, nor to the transmitter & antenna cable. Since this accident I don't have to explain _again_ to be careful due to a really high voltage in the wire and the tuning coil - everybody knows it too well... BTW is THIS frequency causing "only" a scalding or an electric shock or both? HF stays on the body surface, might burn the skin, but what about 137kHz? I am simply curious... 73! Marek SQ5BPM SP5ZCC Scouts Radio Club