Return-Path: Received: from mtain-md01.r1000.mx.aol.com (mtain-md01.r1000.mx.aol.com [172.29.96.85]) by air-da08.mail.aol.com (v129.4) with ESMTP id MAILINDA081-85ea4da05cce233; Sat, 09 Apr 2011 09:19:10 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-md01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 1BB6B38000083; Sat, 9 Apr 2011 09:19:08 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Q8Y37-0004gv-B0 for rs_out_1@blacksheep.org; Sat, 09 Apr 2011 14:18:01 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Q8Y36-0004gm-IC for rsgb_lf_group@blacksheep.org; Sat, 09 Apr 2011 14:18:00 +0100 Received: from filter02.i-online.fr ([195.200.78.9]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Q8Y35-0007Uh-AL for rsgb_lf_group@blacksheep.org; Sat, 09 Apr 2011 14:18:00 +0100 Received: from smtp.qtxt.dns-iol.com ([195.200.78.13]) by filter02.i-online.fr (IceWarp 10.2.2) with ESMTP (SSL) id SRA93838 for ; Sat, 09 Apr 2011 15:17:38 +0200 Received: (qmail 6130 invoked by uid 507); 9 Apr 2011 15:17:47 +0200 Received: from unknown (HELO ?192.168.1.102?) (john.rabson@numeo.fr@217.67.155.178) by smtp.qtxt.dns-iol.com with SMTP; 9 Apr 2011 15:17:47 +0200 Mime-Version: 1.0 (Apple Message framework v1084) From: John Rabson In-Reply-To: <4D9C1086.24378.2450C5A@jurgenb2.3sdesign.de> Date: Sat, 9 Apr 2011 15:17:43 +0200 Message-Id: <5E75125B-D220-4AD9-A7F3-FC4AC6A9B917@numeo.fr> References: <4D9C1086.24378.2450C5A@jurgenb2.3sdesign.de> To: rsgb_lf_group@blacksheep.org X-Mailer: Apple Mail (2.1084) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Content-Type: text/plain; charset=iso-8859-1 Subject: Re: LF: finding RLC network Content-Transfer-Encoding: quoted-printable 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-sid: 3039ac1d60554da05ccc1df5 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Jurgen, What are the maximum and minmum frequencies? How many data points? What accuracy is needed? Is it a 2-terminal network or some kind of filter? 73 John F5VLF On 6 Apr 2011, at 09:04CEST, Jurgen Bartels wrote: >=20 > This is a bit off topic but I hope some experts are here that might poi= nt me > in the right direction. >=20 > An optimisation process has calculated impedance values (R + jX) at diff= erent > frequencies >=20 > Now I need to find *one* RLC network that represents all these impedance= s at > those frequencies. Solving this manually is quite cumbersome >=20 > Is there a (free) software around that solves that? > A web search did not reveal anything >=20 > Any other ideas? >=20 >=20 > Jurgen Bartels Suellwarden, N. Germany > hor. Antennas: 11-ele 45-87MHz 13-ele Band-III, 48-ele UHF, FM: 15.11 > TV: Winradio G305 / Fly2000 + video noise filter & variable IF BW > FM: Downconverter + Perseus + Speclab as WFM demod. > MW: staggered 300m Beverage 320=B0, 30 x 4m EWE 320=B0, Winradio & Pers= eus > http://dx.3sdesign.de/tv_offset_list.htm > http://zeiterfassung.3sdesign.de/station_list.htm >=20 > http://fewo.3sdesign.de - Vacation home: DX right at the Northsea coast >=20 >=20 >=20 >