Return-Path: Received: from mtain-dg05.r1000.mx.aol.com (mtain-dg05.r1000.mx.aol.com [172.29.65.13]) by air-ma10.mail.aol.com (v129.4) with ESMTP id MAILINMA103-b5424c529d1021f; Fri, 30 Jul 2010 05:36:16 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-dg05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 4D7D7380000E0; Fri, 30 Jul 2010 05:36:13 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OelzQ-0005Wj-4O for rs_out_1@blacksheep.org; Fri, 30 Jul 2010 10:34:52 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OelzP-0005Wa-CN for rsgb_lf_group@blacksheep.org; Fri, 30 Jul 2010 10:34:51 +0100 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OelzN-0006cg-54 for rsgb_lf_group@blacksheep.org; Fri, 30 Jul 2010 10:34:51 +0100 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id o6U9YTQW007146 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 30 Jul 2010 11:34:30 +0200 Received: from [129.206.29.99] (pc99.iup.uni-heidelberg.de [129.206.29.99]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id o6U9Yl6S025501; Fri, 30 Jul 2010 11:34:47 +0200 Message-ID: <4C529C6B.9070908@iup.uni-heidelberg.de> Date: Fri, 30 Jul 2010 11:33:31 +0200 From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org, Renato Romero , Paul Nicholson References: <4C51FA69.1030202@iup.uni-heidelberg.de> In-Reply-To: X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,RATWARE_GECKO_BUILD=1.426 Subject: VLF: DK7FC's 6th VLF kite experiment Content-Type: multipart/alternative; boundary="------------070000010903090101010207" 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=HTML_MESSAGE 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: 3039ac1d410d4c529d0d10b6 X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) --------------070000010903090101010207 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Dear LF/VLF group, It took a long time to get a proper wind forecast in a time sector where i can do a kite experiment. Also it took a long time to get the special permission for the new kite antenna. But now,_ if the wind will be enough and if there is no rain_ on *Sunday, the 1. August*, i will make a new kite experiment. The first time i will try to use a* 200m vertical antenna and 600W TX power*. The L of the loading coil will not be reduced in this experiment and so i will transmit at arround *6,5 kHz, the 46 km or 47 km band!* This is since i do not yet know the actual antenna C (EZNEC says 972 pF). The *ERP will be arround 16 mW* (first estimation). This is about 10 dB more than in the first and successful 2nd experiment on March, 15th. Also it is said that propagation on 6 kHz is even better than on 9 kHz! The first time it could be realistic to reach the *1A antenna current *mark! Since some weeks i have set up a grabber in DFCW-120 mode (just to cover a broader frequency range) at *http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html* If you want to catch my signal, you can look there where i am actually transmitting. After some resonating tests i will* transmit in good old DFCW-600*, so it is the best you use a 3...5 mHz FFT and about 1 minute per pixel. Starting time is* 8 UTC*, maybe some time later since it is the first experiment with such an antenna! I still do not know if big problems will occur but i am a *DREAMER* (remembering the 3rd experiment: http://abelian.org/vlf/ss100321/ ). But don't be disappointed if it would be failed. Actually it cannot fail since there will be found improvements for the next test! TX QTH is as usual in JN49IS, 49.77647N 8.699525. The summer time and maybe day time may be not the best but it is an important test for the winther period. Maybe we will see some surprises depending propagation on arround 6 kHz. And it will be the first time that an amateur reaches the far field and hopefully more than 1 Lambda on such a low frequency :-) Any RX reports and ideas/hints (before and after the test) are very appreciated! Best 73, Stefan/DK7FC *excited* --------------070000010903090101010207 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Dear LF/VLF group,

It took a long time to get a proper wind forecast in a time sector where i can do a kite experiment. Also it took a long time to get the special permission for the new kite antenna.

But now, if the wind will be enough and if there is no rain on Sunday, the 1. August, i will make a new kite experiment.

The first time i will try to use a 200m vertical antenna and 600W TX power. The L of the loading coil will not be reduced in this experiment and so i will transmit at arround 6,5 kHz, the 46 km or 47 km band! This is since i do not yet know the actual antenna C (EZNEC says 972 pF). The ERP will be arround 16 mW (first estimation). This is about 10 dB more than in the first and successful 2nd experiment on March, 15th. Also it is said that propagation on 6 kHz is even better than on 9 kHz! The first time it could be realistic to reach the 1A antenna current mark!

Since some weeks i have set up a grabber in DFCW-120 mode (just to cover a broader frequency range) at http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html If you want to catch my signal, you can look there where i am actually transmitting. After some resonating tests i will transmit in good old DFCW-600, so it is the best you use a 3...5 mHz FFT and about 1 minute per pixel.

Starting time is 8 UTC, maybe some time later since it is the first experiment with such an antenna! I still do not know if big problems will occur but i am a DREAMER (remembering the 3rd experiment: http://abelian.org/vlf/ss100321/ ). But don't be disappointed if it would be failed. Actually it cannot fail since there will be found improvements for the next test!
TX QTH is as usual in JN49IS, 49.77647N 8.699525.

The summer time and maybe day time may be not the best but it is an important test for the winther period. Maybe we will see some surprises depending propagation on arround 6 kHz. And it will be the first time that an amateur reaches the far field and hopefully more than 1 Lambda on such a low frequency :-)

Any RX reports and ideas/hints (before and after the test) are very appreciated!

Best 73, Stefan/DK7FC *excited*
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