Return-Path: Received: from mtain-dd03.r1000.mx.aol.com (mtain-dd03.r1000.mx.aol.com [172.29.64.143]) by air-di03.mail.aol.com (v129.4) with ESMTP id MAILINDI031-eabe4c013a581ce; Sat, 29 May 2010 12:01:28 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-dd03.r1000.mx.aol.com (Internet Inbound) with ESMTP id C92D438000347; Sat, 29 May 2010 12:01:26 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OIOSV-0006n8-PF for rs_out_1@blacksheep.org; Sat, 29 May 2010 17:00:23 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OIOSV-0006mz-AX for rsgb_lf_group@blacksheep.org; Sat, 29 May 2010 17:00:23 +0100 Received: from mailout-us.gmx.com ([74.208.5.67]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1OIOST-0004pv-Di for rsgb_lf_group@blacksheep.org; Sat, 29 May 2010 17:00:23 +0100 Received: (qmail invoked by alias); 29 May 2010 16:00:14 -0000 Received: from 75-168-133-142.mpls.qwest.net (EHLO [192.168.1.100]) [75.168.133.142] by mail.gmx.com (mp-us003) with SMTP; 29 May 2010 12:00:14 -0400 X-Authenticated: #60769621 X-Provags-ID: V01U2FsdGVkX19al6gQxXtao2aAEI//Br5U7HvN7ylxfVa/AFohZL 2W+S7GTmHOIH4g Message-ID: <4C013A0E.7030604@gmx.com> Date: Sat, 29 May 2010 11:00:14 -0500 From: "Mike.WE0H" User-Agent: Thunderbird 2.0.0.24 (X11/20100317) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <38A51B74B884D74083D7950AD0DD85E82A1C00@File-Server-HST.hst.e-technik.tu-darmstadt.de> , <1344257766.4243506.1275063067203.JavaMail.fmail@mwmweb035> <38A51B74B884D74083D7950AD0DD85E82A1C0D@File-Server-HST.hst.e-technik.tu-darmstadt.de> <4C012CA7.5030004@gmx.com> <001701caff44$2450bb10$0401a8c0@xphd97xgq27nyf> In-Reply-To: <001701caff44$2450bb10$0401a8c0@xphd97xgq27nyf> X-Y-GMX-Trusted: 0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: Re: 8.97kc - TV transformer info needed Content-Type: text/plain; charset=ISO-8859-1; format=flowed 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 x-aol-global-disposition: G x-aol-sid: 3039ac1d408f4c013a5638f5 X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) I found my 1986 TV and will take the flyback out of it. It looks like the one Rik showed in the picture with a separate primary winding out in the open air. Perfect. Thank you guys!!! Mike WE0H Mal h wrote: > Mike > The core material is usually 3C5 or similar used in old tube TV'S. I have > rewound several for both 137 and 500 kcs and they are perfect for the job. > These are the larger ones, today they are a lot smaller in transistor tv's. > I think Stefan uses one in its original state with the high value Inductor > already on the core. They worked around 15 - 20 kcs. > So possibly an original with the high inductance would resonate a vlf long > wire antenna and wind a few turns on the opposite core side to couple to the > TX > I hope this helps > The ones that I use are square 3 inches long each side and 3/4 inch thick. > > mal/g3kev