Return-Path: Received: (qmail 25062 invoked from network); 20 Jun 2001 11:38:18 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by excalibur.plus.net with SMTP; 20 Jun 2001 11:38:18 -0000 Received: (qmail 7061 invoked from network); 20 Jun 2001 11:37:57 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 20 Jun 2001 11:37:57 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 15CgDH-0005y7-00 for rsgb_lf_group-outgoing@blacksheep.org; Wed, 20 Jun 2001 12:31:59 +0100 X-Priority: 3 X-MSMail-Priority: Normal Received: from mserv1f.u-net.net ([195.102.249.207] helo=mserv1f.vianw.co.uk) by post.thorcom.com with esmtp (Exim 3.16 #2) id 15CgD8-0005xs-00 for rsgb_lf_group@blacksheep.org; Wed, 20 Jun 2001 12:31:50 +0100 Received: from [213.2.16.106] (helo=rsgb.org.uk) by mserv1f.vianw.co.uk with esmtp (Exim 3.22 #5) id 15CgCR-0000QI-00 for rsgb_lf_group@blacksheep.org; Wed, 20 Jun 2001 12:31:08 +0100 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from miked by rsgb.org.uk with SMTP (MDaemon.PRO.v4.0.0.R) for ; Wed, 20 Jun 2001 12:16:28 +0100 From: "Mike Dennison" To: rsgb_lf_group@blacksheep.org Date: Wed, 20 Jun 2001 12:16:26 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 8bit Subject: Re: LF: Re: Static effects Message-ID: <3B30941A.17545.A501A3@localhost> In-reply-to: <001501c0f8e5$640c49a0$6655872c@david> X-Mailer: Pegasus Mail for Win32 (v3.12c) X-Return-Path: miked@mail X-MDaemon-Deliver-To: rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: VE3TOK wrote: > My very thick coax was running true the living room to the shack and I > heard from time to time...tick... tick and my wife didn't know where it was > coming from...No storm was audible .. > Well it was.... little sparks jumping between the shield > and the inner conductor! > Also did see sparks jumping between the center of a PL259 connector > and the outside ring at other times!.. When I used to run a three-eighths-wave on 160m, tuned with an ex- broadcast receiver air-spaced variable capacitor, I would hear similar clicking noises when no obvious storm was present. This was caused by sparks across the capacitor. For any non-earthed antenna (my LF one is earthed through the matching transformer) I would advise using a bleed resistor of a few hundred kilohms to earth just to avoid this static build-up. Mike, G3XDV (IO91VT) http://www.lf.thersgb.net