Return-Path: Received: (qmail 11069 invoked from network); 29 Jan 2002 14:22:51 -0000 Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by excalibur.plus.net with SMTP; 29 Jan 2002 14:22:51 -0000 Received: (qmail 12619 invoked from network); 29 Jan 2002 14:22:53 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior.services.quay.plus.net with SMTP; 29 Jan 2002 14:22:53 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16VZ5B-0002UM-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 29 Jan 2002 14:17:57 +0000 Received: from hawk.mail.pas.earthlink.net ([207.217.120.22] helo=hawk.prod.itd.earthlink.net) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16VZ5A-0002UF-00 for rsgb_lf_group@blacksheep.org; Tue, 29 Jan 2002 14:17:57 +0000 Received: from sdn-ar-006florlap286.dialsprint.net ([158.252.71.216] helo=kd4wov) by hawk.prod.itd.earthlink.net with smtp (Exim 3.33 #1) id 16VZ4G-00015G-00 for rsgb_lf_group@blacksheep.org; Tue, 29 Jan 2002 06:17:00 -0800 From: "Tom Tishken KD4WOV" To: rsgb_lf_group@blacksheep.org Subject: LF: Tesla Coil as an antenna Date: Tue, 29 Jan 2002 09:14:08 -0500 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=Windows-1252; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Hello, I have not experimented in a while with my partially built tesla coil, but has anyone used their Tesla coil as an antenna for ELF or other Freqs? If we try to use it for 137 KHz how do you determine ERP? I had one I was building a few years ago using a 555 timer as an oscillator with a buffer. Followed by a Darlington pair diving a pair of power transistors. never got past the primary coil, due to frying the primary wire with too much current (i.e. too small of a current limiting resister and too much drive).