X-GM-THRID: 1234752140761842484 X-Gmail-Labels: rsgb lf Delivered-To: daveyxm@gmail.com Received: by 10.35.22.8 with SMTP id z8cs346789pyi; Thu, 26 Apr 2007 05:59:58 -0700 (PDT) Received: by 10.67.36.6 with SMTP id o6mr2172372ugj.1177592398168; Thu, 26 Apr 2007 05:59:58 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.google.com with ESMTP id 50si3974382ugb.2007.04.26.05.59.55; Thu, 26 Apr 2007 05:59:58 -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) DomainKey-Status: good (test mode) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Hh3VM-0006U4-2w for rs_out_1@blacksheep.org; Thu, 26 Apr 2007 13:55:24 +0100 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Hh3VK-0006Tv-GR for rsgb_lf_group@blacksheep.org; Thu, 26 Apr 2007 13:55:22 +0100 Received: from smtp809.mail.ird.yahoo.com ([217.146.188.69]) by relay3.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1Hh3VJ-0008UG-KS for rsgb_lf_group@blacksheep.org; Thu, 26 Apr 2007 13:55:22 +0100 Received: (qmail 23962 invoked from network); 26 Apr 2007 12:55:16 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=btinternet.com; h=Received:X-YMail-OSG:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=efehTNFD3v7SpLm2xzPcvE3+UQ8b7lcpqMJSVe/lwCjUFJ5mYqppRUl0UZUUdvsRvp3aWQ5eHRoQ0/pVmk44oAmLB6+LwztpE3RROQ0Tmz3aGRD+WC+Eb4ZOG/MAhqd2sd3fj8IGmN+qbW/U7VIOqVDIkHNQKbvPr87YMfFMJtc= ; Received: from unknown (HELO lark) (alan.melia@btinternet.com@213.122.9.42 with login) by smtp809.mail.ird.yahoo.com with SMTP; 26 Apr 2007 12:55:15 -0000 X-YMail-OSG: loGgWJwVM1mneisj6CL7Iu3y24GJdXmrXkF_ece_oq_q.H0jldYajDzqf4qqvsHpA6HSlxfiGaCoMGcRl_ZDVkDMUI9J_vkxe6xqvm.oGX5OyymuBzoFzLyem95Uh.W8fks- Message-ID: <000701c78802$23ddd080$0300a8c0@lark> From: "Alan Melia" To: References: Date: Thu, 26 Apr 2007 13:54:40 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2615.200 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2615.200 DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: 500 kHz 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: 1937 Hi David, its not optimum ...an electronic cut and try !!.....but try putting 1000pF (or a few pF less) across L2, which makes it parallel resonant at 1000kHz and increases the 2nd harmonic rejection at the cost of slightly less ultimate out-of-band rejection Cheers de Alan G3NYK ----- Original Message ----- From: To: ; Sent: 26 April 2007 13:15 Subject: Re: LF: 500 kHz > > This should do the job. > > > _http://www.g0mrf.freeserve.co.uk/lpf.htm_ > (http://www.g0mrf.freeserve.co.uk/lpf.htm) > > > 73 > > David