Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dk05.r1000.mx.aol.com (Internet Inbound) with ESMTP id D6A91380000B2; Fri, 16 Dec 2011 08:41:18 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RbY1Q-0003x4-El for rs_out_1@blacksheep.org; Fri, 16 Dec 2011 13:40:24 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RbY1Q-0003wv-29 for rsgb_lf_group@blacksheep.org; Fri, 16 Dec 2011 13:40:24 +0000 Received: from mail-pz0-f43.google.com ([209.85.210.43]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RbY1N-0001HF-6W for rsgb_lf_group@blacksheep.org; Fri, 16 Dec 2011 13:40:24 +0000 Received: by daec6 with SMTP id c6so3639217dae.16 for ; Fri, 16 Dec 2011 05:40:13 -0800 (PST) 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=wc/toPlQhEPymIW2CrKe1rkvzn1ISuU8JMvWVhRBLJY=; b=kLZlqqLS1e3FR4RtckIBnrtua4H5j74sxp8SIdGNldZm83Ve1KXBlQR+vdoowkFQSq 4VVqIEy++WF16BkuinbnnkjHAMTpvvZV+gTbKRowuTwXvsSe7WHZOAXozhqT5g9ntyHx E6GgfIvH2xDY3kp/Ce+8S7P4aqJyUOoNgrDz4= MIME-Version: 1.0 Received: by 10.68.191.103 with SMTP id gx7mr16075129pbc.126.1324042813828; Fri, 16 Dec 2011 05:40:13 -0800 (PST) Received: by 10.68.48.33 with HTTP; Fri, 16 Dec 2011 05:40:13 -0800 (PST) In-Reply-To: <003b01ccbbf6$7ea47dc0$0401a8c0@xphd97xgq27nyf> References: <5189193.1324041277063.JavaMail.root@wamui-bucket.atl.sa.earthlink.net> <003b01ccbbf6$7ea47dc0$0401a8c0@xphd97xgq27nyf> Date: Fri, 16 Dec 2011 08:40:13 -0500 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: Wellbrook Loop 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: 0:2:492295488:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-m232.2 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1db4094eeb4a7e5d3d X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Mal, They are mostly marketed to swls and thus are not protected against large signals coming from a nearby transmitter! --=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 On Fri, Dec 16, 2011 at 8:27 AM, mal hamilton wrote= : > It would appear there are a lot of BLOWN loops. I wonder why ? > g3kev > > ----- Original Message ----- > From: "Chris Trask" > To: ; > Sent: Friday, December 16, 2011 1:14 PM > Subject: Re: LF: RE: Wellbrook Loop > > >> > >> > I am looking for a suitable circuit to use with the blown >> > loops (they are not completely dead but have a serious loss >> > of sensitivity but disassembly is certain to destroy the >> > loop amplifier). I suspect it's not so easy to form a 1 >> > metre loop with aluminium tubing so the loops can be >> > re-used for experiments. >> > >> > I was thinking something along these lines: >> > >> > http://www.pm.keirle.com/3_radio/hf_loop_ant/hf_loop_ant.htm >> > >> > http://www.ik4hdq.net/doc/testi/smlloop.pdf >> > >> > http://www.vlf.it/looptheo7/looptheo7.htm >> > >> > http://www.vlf.it/lowfloop/lowfloop.htm >> > >> >> =A0 =A0 =A0You might want to add this to your list of suitable alternati= ves: >> >> http://www.home.earthlink.net/~christrask/Paper009.html >> >> >> Chris Trask >> N7ZWY / WDX3HLB >> Senior Member IEEE >> http://www.home.earthlink.net/~christrask/ >> > > --=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