Return-Path: Received: from mtain-mc03.r1000.mx.aol.com (mtain-mc03.r1000.mx.aol.com [172.29.96.75]) by air-ma05.mail.aol.com (v127_r1.1) with ESMTP id MAILINMA052-b5254b967daa71; Tue, 09 Mar 2010 11:56:10 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-mc03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 8773638000521; Tue, 9 Mar 2010 11:56:06 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Np2hx-0005RP-2C for rs_out_1@blacksheep.org; Tue, 09 Mar 2010 16:55:01 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Np2hw-0005RE-Fa for rsgb_lf_group@blacksheep.org; Tue, 09 Mar 2010 16:55:00 +0000 Received: from mx.omskcity.com ([79.133.160.2]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Np2hu-0003p6-Hm for rsgb_lf_group@blacksheep.org; Tue, 09 Mar 2010 16:55:00 +0000 Received: from noname.nodomain.nowhere (host209.161-133-79.sotline.ru [79.133.161.209]) by mx.omskcity.com (8.13.6/8.13.6) with ESMTP id o29GsqCw084706 for ; Tue, 9 Mar 2010 22:54:53 +0600 (OMST) (envelope-from fitec@omskcity.com) Received: from localhost (fitec@localhost) by noname.nodomain.nowhere (8.8.5/8.8.5) with SMTP id XAA00196 for ; Tue, 9 Mar 2010 23:59:42 GMT X-Authentication-Warning: noname.nodomain.nowhere: fitec owned process doing -bs Date: Tue, 9 Mar 2010 23:59:40 +0000 (GMT) From: "Alexander S. Yurkov" To: rsgb_lf_group@blacksheep.org In-Reply-To: Message-ID: MIME-Version: 1.0 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-3.1.8 (mx.omskcity.com [79.133.160.2]); Tue, 09 Mar 2010 22:54:55 +0600 (OMST) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: VLF: yet another kite-ant design Content-Type: TEXT/PLAIN; charset=US-ASCII 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: 3039ac1d604b4b967da60857 X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) Dear LF, let's describe yet another kite-ant design for 9 kHz. Let it be trianle loop elevated by a kite up to 100m. Base of triangle (parallel to earth) assumed as 200m, height -- 100m, wire -- 2mm diameter cupper wire. Then DC resistance is 2.8 Ohm. There is some skin-effect (not strong) with such a wire. This is why let's increase resistance to 5 Ohm. With such an ANT one should supplay ABT 18A into loop to radiate 1 mW on 9 kHz. This yelds 1.5 kW of TX PWR -- not too much. Advanance is that there is no very high voltage with such an antenna and huge coil is needless (but condensor should be used). By the way similar ANT easy can get RU6LA without a kite:-) Are you there, Ed? Regards, Alexander/RA9MB