Return-Path: Received: from mtain-dc09.r1000.mx.aol.com (mtain-dc09.r1000.mx.aol.com [172.29.64.137]) by air-dc10.mail.aol.com (v129.4) with ESMTP id MAILINDC103-86564cd51f2437e; Sat, 06 Nov 2010 05:25:56 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dc09.r1000.mx.aol.com (Internet Inbound) with ESMTP id 3C7B03800008B; Sat, 6 Nov 2010 05:25:55 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PEf0L-0007ph-TW for rs_out_1@blacksheep.org; Sat, 06 Nov 2010 09:24:09 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PEf0L-0007pY-Gr for rsgb_lf_group@blacksheep.org; Sat, 06 Nov 2010 09:24:09 +0000 Received: from warsl404pip3.highway.telekom.at ([195.3.96.115] helo=email.aon.at) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PEf0J-0008NX-7Y for rsgb_lf_group@blacksheep.org; Sat, 06 Nov 2010 09:24:09 +0000 Received: (qmail 18278 invoked from network); 6 Nov 2010 09:23:50 -0000 Received: from 188-23-178-200.adsl.highway.telekom.at (HELO [192.168.1.101]) ([188.23.178.200]) (envelope-sender ) by smarthub93.highway.telekom.at (qmail-ldap-1.03) with SMTP for ; 6 Nov 2010 09:23:50 -0000 From: Gerhard Hickl To: "rsgb_lf_group@blacksheep.org" Date: Sat, 06 Nov 2010 10:23:50 +0100 Message-ID: <1289035430.5455.9.camel@gerhard-desktop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: OE5ODL on VLF Content-Type: text/plain; charset="UTF-8" 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=TO_ADDRESS_EQ_REAL 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: 3039ac1d40894cd51f2264fb X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Dear group! After weeks of testing and playing around with different kind of equipment and antennas, Ossi OE5ODL has managed to transmit a signal on VLF which is received by his grabber www.langwelle.at It all started when we connected an car audio amplifier over a toroid-transformer to two big fences out in the wood some weeks ago. The purpose just was to see if we could transmit anything with this kind of equipment. We archived about 100W of input power but nearly no signal was radiated. Since this time, Ossi has constantly improved his setup and yesterday for the first time saw his signal on his grabber about 10km away from his home QTH. He is using his LF-antenna (20m vertical) with additional top-loads to get a capacity of about 1200pf. The antenna is matched with some different coils in series and for sure there is still a lot room for improvements on the TX as well as on the RX setup. The power amplifier is a car-audio equipment, antenna input is up to 250W. I think this is the first noticeable signal on VLF radiated by an amateur in OE... Congrats to Ossi 73 OE3GHB Gerhard