Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mp06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 5C84F3800009D; Fri, 16 Dec 2011 07:56:16 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RbXK6-0003GU-9w for rs_out_1@blacksheep.org; Fri, 16 Dec 2011 12:55:38 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RbXK5-0003GL-V5 for rsgb_lf_group@blacksheep.org; Fri, 16 Dec 2011 12:55:37 +0000 Received: from smtp-vbr1.xs4all.nl ([194.109.24.21]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RbXK2-0000ib-M0 for rsgb_lf_group@blacksheep.org; Fri, 16 Dec 2011 12:55:37 +0000 Received: from pc-roelof (ndb.demon.nl [82.161.81.65]) by smtp-vbr1.xs4all.nl (8.13.8/8.13.8) with ESMTP id pBGCtS0K003724 for ; Fri, 16 Dec 2011 13:55:33 +0100 (CET) (envelope-from roelof@ndb.demon.nl) To: rsgb_lf_group@blacksheep.org References: Date: Fri, 16 Dec 2011 13:55:22 +0100 MIME-Version: 1.0 From: "Roelof Bakker" Message-ID: In-Reply-To: User-Agent: Opera Mail/11.60 (Win32) X-Virus-Scanned: by XS4ALL Virus Scanner X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Content-Type: text/plain; charset=iso-8859-15; format=flowed; delsp=yes Subject: Re: LF: Wellbrook Loop Content-Transfer-Encoding: 7bit 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: 0:2:434739040:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1dc14a4eeb3ff07a4b X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Hello Andy, I have been asking the same question for years, but so far nothing has been revealed. I was given two defunct units and on one I have started to remove the potting compound with a lino cutter. This is very time consuming and other projects got priority. There is a kind of transformer inside, but I will have to dig a little further. Terry, I will replace the original Wellbrook design with the design of LZ1AQ which can be found here: http://www.lz1aq.signacor.com/docs/wsml/wideband-active-sm-loop-antenna.htm I have made a PCB that fits inside the plastic casing. So, I guess it is time to build it! 73, Roelof, pa0rdt