Return-Path: Received: from mtain-mg01.r1000.mx.aol.com (mtain-mg01.r1000.mx.aol.com [172.29.96.201]) by air-dc09.mail.aol.com (v129.10) with ESMTP id MAILINDC094-86a74df12c38334; Thu, 09 Jun 2011 16:25:28 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mg01.r1000.mx.aol.com (Internet Inbound) with ESMTP id A01DB3800008E; Thu, 9 Jun 2011 16:25:23 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1QUlm8-00057Q-8T for rs_out_1@blacksheep.org; Thu, 09 Jun 2011 21:24:20 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1QUlm7-00057H-Dw for rsgb_lf_group@blacksheep.org; Thu, 09 Jun 2011 21:24:19 +0100 Received: from imr-da01.mx.aol.com ([205.188.105.143]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1QUlm4-0006sP-UA for rsgb_lf_group@blacksheep.org; Thu, 09 Jun 2011 21:24:19 +0100 Received: from mtaout-mb04.r1000.mx.aol.com (mtaout-mb04.r1000.mx.aol.com [172.29.41.68]) by imr-da01.mx.aol.com (8.14.1/8.14.1) with ESMTP id p59KOAX7004810 for ; Thu, 9 Jun 2011 16:24:10 -0400 Received: from White (nrbg-4d0743a0.pool.mediaWays.net [77.7.67.160]) by mtaout-mb04.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 14517E000091 for ; Thu, 9 Jun 2011 16:24:06 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20110426; t=1307651049; bh=4gHx65YPWj+Lut8XKdaf8sGLoKeb3L6UnwEeFepTZvc=; h=Message-ID:From:To:Subject:Date:MIME-Version:Content-Type; b=IYLRUWX0J0aeu1AxU0Xb32Hib2ERzdq+pPnw2dvqxTY08c9B1UoEDlmu5i3oUzVuz gPiiNXZTtwuLHqdt0solk+AO68w2KHkpF3RtYnOoXhuIoPcdc7ZmmjFR+tV85pcSfi +Cv0fKT+iC0KJ0qOKzAQg/8UTUKLDd7gPkxUkFEQ= Message-ID: <020D03BF5311481D8EF2BED005D2CC0F@White> From: "Markus Vester" To: References: <4DF11A78.4020401@iup.uni-heidelberg.de> Date: Thu, 9 Jun 2011 22:24:05 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 12.0.1606 X-MimeOLE: Produced By Microsoft MimeOLE V12.0.1606 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: VLF: First tests on VLF at DK7FC in Heidelberg Content-Type: multipart/alternative; boundary="----=_NextPart_000_0029_01CC26F3.F1290ED0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,HTML_MESSAGE, MISSING_OUTLOOK_NAME 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-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d010.1 ; domain : mx.aol.com DKIM : pass x-aol-sid: 3039ac1d60c94df12c3358de X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none ------=_NextPart_000_0029_01CC26F3.F1290ED0 Content-Type: text/plain; charset="ISO-8859-15" Content-Transfer-Encoding: quoted-printable Excellent, Stefan! I have raised the antenna above the roof again, and reac= tivated the VLF grabber. Really looking forward to see your signal! 73, and good luck de Markus (DF6NM) From: Stefan Sch=E4fer=20 Sent: Thursday, June 09, 2011 9:09 PM To: rsgb_lf_group@blacksheep.org=20 Cc: Paul ; Bernd Grupe=20 Subject: VLF: First tests on VLF at DK7FC in Heidelberg VLF, Tomorrow i plan to do first tests on 8970 Hz on my fixed antenna in=20 Heidelberg, =20 http://no.nonsense.ee/qthmap/?qth=3DJN49IK00WG&from=3Djn49ik00WD It is abou= t=20 30m up. I'll start doing some resonating tests and may come on air in the=20 afternoon. The small PA (max. 300W) will be used in this first test=20 since it is easier to manage. Maybe the resonance will be some kHz=20 higher but i hope to come down into the Dreamers Band (TM). I expect to be visible on "local" grabbers like DF6NM, OE3GHB and=20 OK2BVG. If all works well i plan to transmit a longer dash, maybe 6000=20 seconds and later a short message in DFCW-600, like "K" or so, just for=20 the proof and to get a first impression about the efficiency of this=20 antenna. I had the idea to buy some flexible aluminium tube to form a toroid that=20 will be placed on the top of the coil. Tis reduces the maximum E field=20 and adds some C, that might be needed to come down to 8970 Hz... Of course all this depends on the absence of rain but now i don't need=20 wind! Therefore, the signals will be about 20 dB lower, probably. The signal will be overload my grabber=20 http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html=20 that is in about 20 m (!) distance. Hopefully it gets not damaged due to=20 several 10 kV on the wire. Is there someone who will watch for that signal? Reports would be very apprechiated! 73, CU, Stefan/DK7FC ------=_NextPart_000_0029_01CC26F3.F1290ED0 Content-Type: text/html; charset="ISO-8859-15" Content-Transfer-Encoding: quoted-printable
Excellent, Stefan! I have raised = ;the=20 antenna above the roof again, and reactivated the VLF grabber. Really looki= ng=20 forward to see your signal!
 
73, and good luck
de Markus (DF6NM)
 

Sent: Thursday, June 09, 2011 9:09 PM
Subject: VLF: First tests on VLF at DK7FC in=20 Heidelberg
=
VLF,

Tomorrow i=20 plan to do first tests on 8970 Hz on my fixed antenna in
Heidelberg,&nb= sp;=20
http://no.nonsense.ee/qthmap/?qth=3DJN49IK00WG&from=3Djn49i= k00WD=20 It is about
30m up.

I'll start doing some resonating tests and m= ay=20 come on air in the
afternoon. The small PA (max. 300W) will be used in = this=20 first test
since it is easier to manage. Maybe the resonance will be so= me=20 kHz
higher but i hope to come down into the Dreamers Band (TM).

= I=20 expect to be visible on "local" grabbers like DF6NM, OE3GHB and
OK2BVG.= If=20 all works well i plan to transmit a longer dash, maybe 6000
seconds and=20 later a short message in DFCW-600, like "K" or so, just for
the proof a= nd to=20 get a first impression about the efficiency of this
antenna.

I h= ad=20 the idea to buy some flexible aluminium tube to form a toroid that
will= be=20 placed on the top of the coil. Tis reduces the maximum E field
and adds= some=20 C, that might be needed to come down to 8970 Hz...

Of course all thi= s=20 depends on the absence of rain but now i don't need
wind! Therefore, th= e=20 signals will be about 20 dB lower, probably.

The signal will be over= load=20 my grabber
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_= VLF_Grabber.html=20
that is in about 20 m (!) distance. Hopefully it gets not damaged due t= o=20
several 10 kV on the wire.

Is there someone who will watch for t= hat=20 signal?

Reports would be very apprechiated!

73, CU,=20 Stefan/DK7FC

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