Return-Path: Received: from rly-md01.mx.aol.com (rly-md01.mail.aol.com [172.20.29.139]) by air-md02.mail.aol.com (v120.9) with ESMTP id MAILINMD021-8e84725d2ca186; Mon, 29 Oct 2007 08:32:31 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-md01.mx.aol.com (v120.9) with ESMTP id MAILRELAYINMD018-8e84725d2ca186; Mon, 29 Oct 2007 08:32:11 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ImTm7-0001mw-OR for rs_out_1@blacksheep.org; Mon, 29 Oct 2007 12:31:23 +0000 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ImTm7-0001mn-8e for rsgb_lf_group@blacksheep.org; Mon, 29 Oct 2007 12:31:23 +0000 Received: from rwcrmhc15.comcast.net ([204.127.192.85]) by relay2.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1ImTm2-0001vo-Ki for rsgb_lf_group@blacksheep.org; Mon, 29 Oct 2007 12:31:23 +0000 Received: from rmailcenter05.comcast.net ([204.127.197.115]) by comcast.net (rwcrmhc15) with SMTP id <20071029123059m15009tlmle>; Mon, 29 Oct 2007 12:31:10 +0000 Received: from [24.91.18.115] by rmailcenter05.comcast.net; Mon, 29 Oct 2007 12:30:59 +0000 From: k2ors@comcast.net To: rsgb_lf_group@blacksheep.org, "rsgb_lf_group@blacksheep.org" Cc: Laurence KL1X Date: Mon, 29 Oct 2007 12:30:59 +0000 Message-Id: <102920071230.19815.4725D28300016F6700004D6722007358340B97010D0A020E06979D0E03@comcast.net> X-Mailer: AT&T Message Center Version 1 (Oct 4 2006) X-Authenticated-Sender: bWFyeWphbmVib3lkQGNvbWNhc3QubmV0 X-Spam-Score: 0.1 (/) X-Spam-Report: autolearn=disabled,AWL=-0.427,NO_REAL_NAME=0.55 Subject: Re: LF: Chebyshev X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.3 required=5.0 tests=NO_REAL_NAME 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-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Laurence, AADE has a very powerful filter design and analysis program and its free: http://www.aade.com/filter.htm -- 73 Warren K2ORS WD2XGJ 136-140kHz WD2XSH/23 505-510kHz WE2XEB/2 160-189kHz WE2XGR/1 505-515kHz FN42hi http://www.w4dex.com/wd2xgj.htm -------------- Original message ---------------------- From: Laurence KL1X > > Anyone point me to an online tool for designing LPF's for say 5 7 or 9 pole > Chebyshev's on LF or HF? ps. Mr mail service hasnt plonked this months Radcom > onto my desk and not expecting it for another week or so; this is typical for a > routing that includes UK, Houston thence Singapore. with thanks Laurence 9V1 LF > > _________________________________________________________________ > Peek-a-boo FREE Tricks & Treats for You! > http://www.reallivemoms.com?ocid=TXT_TAGHM&loc=us