X-GM-THRID: 1235285225601679798 X-Gmail-Labels: rsgb lf Delivered-To: daveyxm@gmail.com Received: by 10.35.12.7 with SMTP id p7cs94430pyi; Fri, 4 May 2007 14:30:38 -0700 (PDT) Received: by 10.67.27.15 with SMTP id e15mr595802ugj.1178314238296; Fri, 04 May 2007 14:30:38 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.google.com with ESMTP id u6si6253407uge.2007.05.04.14.30.35; Fri, 04 May 2007 14:30:38 -0700 (PDT) Received-SPF: neutral (google.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 1Hk5JI-00073H-AP for rs_out_1@blacksheep.org; Fri, 04 May 2007 22:27:28 +0100 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Hk5JH-000738-U8 for rsgb_lf_group@blacksheep.org; Fri, 04 May 2007 22:27:27 +0100 Received: from fish2.hurontel.on.ca ([216.46.129.163]) by relay2.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Hk5JG-00067z-6N for rsgb_lf_group@blacksheep.org; Fri, 04 May 2007 22:27:27 +0100 Received: from server (dial-49.hurontel.on.ca [216.46.128.49]) by fish2.hurontel.on.ca (Spam Firewall) with SMTP id 7643831905F for ; Fri, 4 May 2007 17:27:13 -0400 (EDT) Message-ID: <00c401c78e8a$af4defe0$0b01a8c0@server> From: "J. B. Weazle McCreath" To: References: <004d01c78c3a$48757ec0$0b01a8c0@server> <003501c78c4d$0d68f060$0300a8c0@lark> <006a01c78d17$440b3d60$0b01a8c0@server> <8C95BC9DABC7512-1190-E1D2@FWM-M30.sysops.aol.com> <009101c78dc0$c1836700$0b01a8c0@server> <8C95BF936ED4AEE-1BD8-EEA3@FWM-D26.sysops.aol.com> Date: Fri, 4 May 2007 21:27:46 +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: -0.3 (/) X-Spam-Report: autolearn=disabled,AWL=-0.324 Subject: Re: LF: Passive high-pass filter circuits? Content-Type: text/plain; charset="iso-8859-1" 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 Status: O X-Status: X-Keywords: X-UID: 4350 Hi John, LFers, Success!! Since the primary and secondary windings of the repeater coils are actually two windings hooked in series, I removed the link on the line side and replaced it with a 0.1 capacitor. That reduced the input level in the 0 to 1kHz. range by better than 10 dB., while everything above that is still about the same level. Now the mains hum and its first few harmonics ares well below the baseband level. 73, J.B., VE3EAR - VE3WZL Solar and wind powered Lowfer " EAR" 188.830 EN93dr http://www.hurontel.on.ca/~weazle