Return-Path: Received: (qmail 6279 invoked from network); 31 Jan 2000 14:22:40 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by grants.core.plus.net.uk with SMTP; 31 Jan 2000 14:22:40 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 12FHYk-0002ue-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 31 Jan 2000 14:12:06 +0000 Received: from smtp-out1.bellatlantic.net ([199.45.39.156]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 12FHYi-0002uZ-00 for rsgb_lf_group@blacksheep.org; Mon, 31 Jan 2000 14:12:05 +0000 Received: from bellatlantic.net (client-151-200-118-197.bellatlantic.net [151.200.118.197]) by smtp-out1.bellatlantic.net (8.9.1/8.9.1) with ESMTP id JAA01382; Mon, 31 Jan 2000 09:11:46 -0500 (EST) X-Priority: 3 X-MSMail-Priority: Normal Message-ID: <3895989D.7DFDF622@bellatlantic.net> Date: Mon, 31 Jan 2000 09:13:49 -0500 From: "Andre' Kesteloot" X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Mailer: Mozilla 4.7 [en]C-CCK-MCD NSCPCD47 (WinNT; I) X-Accept-Language: en MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org Subject: Re: LF: 8 kHz loading coil References: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Good point. I still have somewhere some of those chokes that were used for filtering plate voltages... Andre' N4ICK ******************************* Mike Dennison wrote: > > 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 > > Are we locked into HF thinking here? Why not use an iron cored > inductor such as the output transformer from a QRO valve audio > amplifier? > > Mike, G3XDV (IO91VT) > http://www.dennison.demon.co.uk/activity.htm