Return-Path: Received: (qmail 27129 invoked from network); 29 Nov 2002 10:30:14 -0000 Received: from murphys.services.quay.plus.net (212.159.14.225) by mailstore with SMTP; 29 Nov 2002 10:30:14 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 9111 invoked from network); 29 Nov 2002 10:30:32 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from post.thorcom.com (193.82.116.70) by murphys.services.quay.plus.net with SMTP; 29 Nov 2002 10:30:31 -0000 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.10) id 18HiP1-0000LH-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 29 Nov 2002 10:29:43 +0000 Received: from [64.12.136.164] (helo=imo-m09.mx.aol.com) by post.thorcom.com with esmtp (Exim 4.10) id 18HiP1-0000L1-00 for rsgb_lf_group@blacksheep.org; Fri, 29 Nov 2002 10:29:43 +0000 Received: from G0MRF@aol.com by imo-m09.mx.aol.com (mail_out_v34.13.) id l.8.3082bd21 (4246) for ; Fri, 29 Nov 2002 05:29:09 -0500 (EST) From: G0MRF@aol.com Message-ID: <8.3082bd21.2b189b74@aol.com> Date: Fri, 29 Nov 2002 05:29:08 EST To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 X-Mailer: AOL 6.0 for Windows UK sub 10512 Subject: LF: New cores from Micrometals Content-Type: text/html; charset=windows-1252 X-Spam-Status: No, hits=1.6 required=5.0tests=NO_REAL_NAME,SPAM_PHRASE_01_02,USER_AGENT_AOLversion=2.42 X-Spam-Level: * Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Content-transfer-encoding: 8bit A short note for any home constructors.

Micrometals, producers of the popular T-200-2 and other toroids, have introduced a new series called the 200C series.

As the name suggests, these cores can operate at very high flux densities and can run up to 200 degrees.   

The first two materials are the -60  and -70  with permeabilities of 55 and 100 respectively.  These are described as "magnetic alloys" with properties similar to Iron powder.

Toroids between 0.16 inch and 4 inches are being produced in addition to E cores and other formats.   Other materials in the series are planned and these will have permeabilities >100 and <55.

So if you're planning a winter dx-pedition and you fancy a cup of tea, just remember to bring a kettle and make sure your 200C cores are near the top of the transmitter.

73

David  G0MRF