Return-Path: Received: (qmail 19342 invoked from network); 12 Dec 1999 10:13:03 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by 212.159.2.35 with SMTP; 12 Dec 1999 10:13:03 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 11x6OW-0006dU-00 for rsgb_lf_group-outgoing@blacksheep.org; Sun, 12 Dec 1999 10:38:24 +0000 Received: from cask.force9.net ([195.166.128.29]) by post.thorcom.com with smtp (Exim 3.02 #1) id 11x6OU-0006dP-00 for rsgb_lf_group@blacksheep.org; Sun, 12 Dec 1999 10:38:22 +0000 Received: (qmail 1026 invoked from network); 12 Dec 1999 10:06:09 -0000 Received: from unknown (HELO mayfly.force9.net) (195.166.128.28) by cask.force9.net with SMTP; 12 Dec 1999 10:06:09 -0000 Received: (qmail 7490 invoked from network); 12 Dec 1999 10:06:09 -0000 Received: from unknown (HELO main) (212.56.94.162) by mayfly.plus.net.uk with SMTP; 12 Dec 1999 10:06:09 -0000 Message-ID: <003901bf4489$1d3fec00$0600a8c0@main> From: "Dave" To: "LF Group" References: <000701bf4413$99828b40$080e01d5@dave> Subject: LF: Re: re: Insulators Date: Sun, 12 Dec 1999 10:10:18 -0000 MIME-Version: 1.0 Content-Type: text/plain; charset=Windows-1252; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2014.211 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Dear all. Just a cautionary note about the use of plastic tubes to support LF aerials. Water collects inside the tube (if it is horizontal) and RF then tracks along it and the whole thing catches fire... I know this! Mine was separating my strapped feeder so the two ends were at the same RF potential...... Funny stuff this RF. Dave G3YXM. >For information I have used plastic electrical conduit, oval shaped and >cheaply available in various sizes, as spacers for open wire feeder. I do >not know how this plastic would cope with the kind of voltages at the end of >136 antennas but it might be worth trying. Certainly it was the quickest >and neatest way to make feeder spacers, far better than old Biros!