Return-Path: Received: (qmail 21439 invoked from network); 29 Jan 2000 13:36:15 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by teachers.core.plus.net.uk with SMTP; 29 Jan 2000 13:36:15 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 12EXv3-0000Wg-00 for rsgb_lf_group-outgoing@blacksheep.org; Sat, 29 Jan 2000 13:28:05 +0000 Received: from mailout03.sul.t-online.de ([194.25.134.81]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 12EXv2-0000Wb-00 for rsgb_lf_group@blacksheep.org; Sat, 29 Jan 2000 13:28:04 +0000 Received: from fwd05.sul.t-online.de by mailout03.sul.t-online.de with smtp id 12EXux-000503-00; Sat, 29 Jan 2000 14:27:59 +0100 Received: from (087321565-0001@[62.158.202.6]) by fwd05.sul.t-online.de with smtp id 12EXur-0iDZbcC; Sat, 29 Jan 2000 14:27:53 +0100 X-Priority: 3 X-MSMail-Priority: Normal From: "Hans-Joachim Brandt" To: rsgb_lf_group@blacksheep.org X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 References: <000d01bf6a31$3bf336c0$975b97d4@win95.swipnet.se> Subject: Re: LF: 8 kHz loading coil X-Mailer: T-Online eMail 2.3 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 8bit Date: Sat, 29 Jan 2000 14:27:53 +0100 Message-ID: <12EXur-0iDZbcC@fwd05.sul.t-online.de> X-Sender: 087321565-0001@t-dialin.net Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: I would not use toroids for high power transmitting, just air coils. 73 Ha-Jo, DJ1ZB Christer Andersson schrieb: > Hello (V)LF experimenters, > > I have an idea of resonating my existing vertical on 8 kHz. > Is there a practical way to construct a 600 mH loading coil, withstanding 3-4 > A and high voltage? > Any *large* toroids on the market?' > > /Christer > sm6pxj > > >