X-GM-THRID: 1199277148618857074 X-Gmail-Labels: lowfer,rsgb lf X-Gmail-Received: b0d7e04b4337963b2c86070e71ef693154e079a0 Delivered-To: daveyxm@gmail.com Received: by 10.54.127.8 with SMTP id z8cs5041wrc; Thu, 30 Mar 2006 03:56:54 -0800 (PST) Received: by 10.64.209.3 with SMTP id h3mr1238599qbg; Thu, 30 Mar 2006 03:56:54 -0800 (PST) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.gmail.com with ESMTP id e19si604975qbe.2006.03.30.03.56.53; Thu, 30 Mar 2006 03:56:54 -0800 (PST) Received-SPF: neutral (gmail.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1FOvfk-00084e-VS for rs_out_1@blacksheep.org; Thu, 30 Mar 2006 12:50:40 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1FOvfk-00084V-GN for rsgb_lf_group@blacksheep.org; Thu, 30 Mar 2006 12:50:40 +0100 Received: from mail.hurontel.on.ca ([216.46.129.11]) by relay1.thorcom.net with esmtp (Exim 4.51) id 1FOxKg-0008R0-UB for rsgb_lf_group@blacksheep.org; Thu, 30 Mar 2006 14:37:18 +0100 Received: from server (dial-198.hurontel.on.ca [216.46.128.198]) by mail.hurontel.on.ca (Postfix) with SMTP id AFB5CAC6D; Thu, 30 Mar 2006 06:50:21 -0500 (EST) Message-ID: <006001c653e8$326166c0$0b01a8c0@server> From: "J. B. Weazle McCreath" To: Cc: References: Date: Thu, 30 Mar 2006 11:53:05 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2720.3000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Spam-Score: -1.0 (-) X-Spam-Report: autolearn=disabled,AWL=-1.101,HTML_50_60=0.095,HTML_MESSAGE=0.001 Subject: LF: Re: [LW] A bridge too far...? Content-Type: multipart/alternative; boundary="----=_NextPart_000_005D_01C653F0.819F6040" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,HTML_MESSAGE 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 Status: O X-Status: X-Keywords: X-UID: 6067 This is a multi-part message in MIME format. ------=_NextPart_000_005D_01C653F0.819F6040 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Laurence, I had the same issue too...no local availability. Solution? Home brew = by winding a trifilar transformer on a large toroid removed from a computer power supply. Bench tests indicate that it works fine, giving nice deep nulls with a variety of loads, both reactive and purely resistive. I'm also given to believe that a telephone "repeater coil" could be used = for this application as well. They are known for their excellent balance = and are high quality. I have several here, so I may just lash something up = to see if indeed they would work. I'll post my results. 73, J.B., VE3EAR - VE3WZL Solar and wind powered EN93dr ------=_NextPart_000_005D_01C653F0.819F6040 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi Laurence,

I had the same issue too...no local=20 availability. Solution? Home brew by

winding a trifilar transformer on a = large toroid=20 removed from a computer

power supply. Bench tests = indicate that it=20 works fine, giving nice deep

nulls with a variety of loads, both = reactive and=20 purely resistive.

I'm also given to believe that a = telephone=20 "repeater coil" could be used for

this application as well. They = are known for=20 their excellent balance and

are high quality. I have several = here, so I=20 may just lash something up to

see if indeed they would work. = I'll post my=20 results.

73, J.B., VE3EAR - VE3WZL
Solar and = wind=20 powered
EN93dr

------=_NextPart_000_005D_01C653F0.819F6040--