Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_MED,SPF_PASS,T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: EATSERVER: mailn 1166; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id v5PEliiN001673 for ; Sun, 25 Jun 2017 16:47:46 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1dP8go-0002SS-Kz for rs_out_1@blacksheep.org; Sun, 25 Jun 2017 15:39:02 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1dP8gn-0002SJ-T0 for rsgb_lf_group@blacksheep.org; Sun, 25 Jun 2017 15:39:01 +0100 Received: from know-smtprelay-omc-5.server.virginmedia.net ([80.0.253.69]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.89) (envelope-from ) id 1dP8gk-0005u8-5d for rsgb_lf_group@blacksheep.org; Sun, 25 Jun 2017 15:39:00 +0100 Received: from [192.168.1.4] ([86.31.47.97]) by know-smtprelay-5-imp with bizsmtp id d2eu1v00C25oWc6012ex5S; Sun, 25 Jun 2017 15:38:57 +0100 X-DKIM-Result: Domain=ntlworld.com Result=Signature OK X-Originating-IP: [86.31.47.97] X-Authenticated-User: X-Spam: 0 X-Authority: v=2.1 cv=XuEHQgx9 c=1 sm=1 tr=0 a=YIO0osUAQg+Vw5WW2G06lg==:117 a=YIO0osUAQg+Vw5WW2G06lg==:17 a=L9H7d07YOLsA:10 a=9cW_t1CCXrUA:10 a=s5jvgZ67dGcA:10 a=kj9zAlcOel0A:10 a=x7bEGLp0ZPQA:10 a=pGLkceISAAAA:8 a=oCcaPWc0AAAA:8 a=AgV9K8IxbXkC6EqPNAIA:9 a=01VnxQqvsmT2swRF:21 a=XdZm4Qg0Pghmx30t:21 a=CjuIK1q_8ugA:10 a=6kGIvZw6iX1k4Y-7sg4_:22 From: "Mike Dennison" To: rsgb_lf_group@blacksheep.org Date: Sun, 25 Jun 2017 15:38:53 +0100 MIME-Version: 1.0 Message-ID: <594FCAFD.28958.1E2184@mike.dennison.ntlworld.com> In-reply-to: <1649946984.20170624173724@gmail.com> References: <1649946984.20170624173724@gmail.com> X-mailer: Pegasus Mail for Windows (4.71.565) Content-description: Mail message body DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ntlworld.com; s=meg.feb2017; t=1498401537; bh=JLt8Xw4nDYS5eCi4oUqhC2NnzA71rpth/ZTSjdaFO/8=; h=From:To:Date:Subject:Reply-to:In-reply-to:References; b=Z8dL25VzQmAiKa2BcsnlEyQ7+2FLGxXBnFb7TLUTvbmT7e6eJkoT3OZu1LWlPb4g7 OPEs3dmBM8vHepWJtOTC94RO8mE+5TWB3Qa6vLnK7lyE9lkgWxLnOCvoZyJjhiKr3q ne/A0p5noBHr51truashwQw2wM5BFMueZX44RWEFtDFD2j7pjLr+xE/U45lTmzl+c8 hu7s8x4lRYsa+p62DGwsU+LQC5JgxdDpiwHDzehR/8sI5yn9A/efZhyQf9t6e5n+wC WzLw2o7Jx9QnDz1A8XirIrNoL9XPDUvDXRec4TGtZfhYzyTY4DrZJIs044TCkhASjy nKS3SOMQ48ncA== X-Scan-Signature: a6b6ffaf48fdddf1ed5c25dc4bf03ee1 Subject: Re: LF: Insulating a Versatower from ground Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT 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-Scanned-By: MIMEDefang 2.75 Status: RO X-Status: X-Keywords: X-UID: 12102 Nice idea, Chris, but any insulation would have to withstand the thousands of volts on your antenna in all conditions (wet and dry). Might work for the lower volages on higher bands but I doubt it would be OK at LF. The other factor worth bearing in mind is the max permitted ERP which you must be close to already judging from the reports you are getting. Mike, G3XDV ========== > Has anyone tried making insulating bushes for the tilt over hinge and > the bottom locking peg on a crank up / crank over 40 or 60 foot > Versatower? How much of a detrimental effect would the steel 6 foot > above ground, concreted in support post a couple or three inches away > from it have? Specifically I am toying with doing this to use it on LF > 136kHz with my horizontal quad loop as the capacitive "top hat" to > gain as much vertical height for the radiating element as possible, > right now the mast has a long insulated line to the corner of my > horizontal quad loop with the vertical some way from the mast, > although today to minimise sag from having the vertical some > distance away I moved it nearer the mast. By so doing I have > gained maybe another 8 feet of height. Thanks. > > > > Thanks > > -- > > Best regards, Chris 2E0ILY > > mailto:dead.fets@gmail.com > > > > --- > This email has been checked for viruses by AVG. > http://www.avg.com >