Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mk01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 686B83800008E; Sat, 5 Nov 2011 18:30:57 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RMojw-000620-VU for rs_out_1@blacksheep.org; Sat, 05 Nov 2011 22:29:28 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RMojw-00061r-5r for rsgb_lf_group@blacksheep.org; Sat, 05 Nov 2011 22:29:28 +0000 Received: from mail-iy0-f171.google.com ([209.85.210.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RMoju-00088k-JO for rsgb_lf_group@blacksheep.org; Sat, 05 Nov 2011 22:29:28 +0000 Received: by iaen33 with SMTP id n33so6787441iae.16 for ; Sat, 05 Nov 2011 15:29:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; bh=y7+DWHZFgzfPso6MsCKNk72FU0vvQgL38wBgeJsnWls=; b=Lp4X/q3WAXwjwp5zvGl7E4XkkDLWQh5+pv3S0NQxq7KP2dxhSl1+MriEZshKJXig/Q /DVyGtPelyMXyx5KJyER1fOXc8jMUcA1UFJ06jn6eIfrIhyG6ugtnU4PveuZ76s/9Mco juFeuMFt0NBcO4cK11asFPmWzrlPPGuq2a0hg= MIME-Version: 1.0 Received: by 10.231.45.135 with SMTP id e7mr6963238ibf.12.1320532159677; Sat, 05 Nov 2011 15:29:19 -0700 (PDT) Received: by 10.68.49.230 with HTTP; Sat, 5 Nov 2011 15:29:19 -0700 (PDT) In-Reply-To: References: Date: Sat, 5 Nov 2011 18:29:19 -0400 Message-ID: From: Warren Ziegler To: rsgb_lf_group@blacksheep.org X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: RE: Al as a Loop Conductor ? Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: 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-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:501660352:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-m020.1 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d61854eb5b9207ed0 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Thanks to Jean-Pierre, Rik and Alan for the help and suggestions on the aluminum loop wire! 73 K2ORS On Sat, Nov 5, 2011 at 6:57 AM, Rik Strobbe w= rote: > Hi Warren, > > aluminium has a higher resistivity (28x10^-9 Ohmmeter) than copper (17x10= ^-9 Ohmmeter) but it has a larger skin depth (Al =3D 260 um, Cu =3D 210 um = at 100kHz). > That makes an Al wire only 33% worse than a Cu wire of the same diameter. > Regarding mechanical strength it might be a good idea to inforce this by = a steel wire support. > > 73, Rik =A0ON7YD - OR7T > > ________________________________________ > Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.o= rg] namens Warren Ziegler [wd2xgj@gmail.com] > Verzonden: zaterdag 5 november 2011 1:30 > Aan: rsgb_lf_group > Onderwerp: LF: Al as a Loop Conductor ? > > Hi, > =A0 =A0I am considering using Aluminum service drop wire (3/0 gauge) as a > conductor for an LF transmitting loop. I know that the conductivity is > not as good as copper but it weighs so much less that I can use a > larger diameter conductor. > Has anyone tried this? How would it hold up when flexed by the wind ? > Other thoughts? > -- > 73 Warren K2ORS > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0WD2XGJ > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0WD2XSH/23 > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0WE2XEB/2 > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0WE2XGR/1 > --=20 73 Warren K2ORS =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 WD2XGJ =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 WD2XSH/23 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 WE2XEB/2 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 WE2XGR/1