Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mj02.r1000.mx.aol.com (Internet Inbound) with ESMTP id C0B233800009D; Thu, 16 Jun 2011 14:47:48 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1QXHa9-0005T1-HZ for rs_out_1@blacksheep.org; Thu, 16 Jun 2011 19:46:21 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1QXHa8-0005Ss-T6 for rsgb_lf_group@blacksheep.org; Thu, 16 Jun 2011 19:46:20 +0100 Received: from mout0.freenet.de ([195.4.92.90]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1QXHa3-0004ae-GN for rsgb_lf_group@blacksheep.org; Thu, 16 Jun 2011 19:46:20 +0100 Received: from [195.4.92.24] (helo=14.mx.freenet.de) by mout0.freenet.de with esmtpa (ID dl4yhf@freenet.de) (port 25) (Exim 4.76 #5) id 1QXHa2-0005m6-GF for rsgb_lf_group@blacksheep.org; Thu, 16 Jun 2011 20:46:14 +0200 Received: from blfd-4d0861bb.pool.mediaways.net ([77.8.97.187]:1237 helo=[192.168.0.101]) by 14.mx.freenet.de with esmtpsa (ID dl4yhf@freenet.de) (TLSv1:CAMELLIA256-SHA:256) (port 465) (Exim 4.72 #5) id 1QXHa2-00043q-0V for rsgb_lf_group@blacksheep.org; Thu, 16 Jun 2011 20:46:14 +0200 Message-ID: <4DFA4F73.1050603@freenet.de> Date: Thu, 16 Jun 2011 20:46:11 +0200 From: wolf_dl4yhf User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <16BC8B3CA8672445BC2A29B4C14A26D4379ED2AAB4@exlnmb01.eur.nsroot.net>,<4DF9EFD1.5010208@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: Re: VLF: DK7FC's 11th VLF kite experiment Content-Type: multipart/alternative; boundary="------------080601080300060302070203" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.0 required=5.0 tests=HTML_20_30,HTML_MESSAGE, HTML_TITLE_EMPTY 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-SCORE: 0:2:480106848:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039400c89a44dfa4fd4741b X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. --------------080601080300060302070203 Content-Type: text/plain; charset=ISO-8859-2; format=flowed Content-Transfer-Encoding: 7bit Hi Lubos, Stefan, and the group, Sri I will miss this opportunity but.. Lubos wrote: > BTW: I am going to visit Hamfest in Fridrichshafen next week. Will you > be there as well? > I will be there most likely on Friday 24th, the first day of the fair. I usually met Walter DJ2LF at the DARC HF Stand ("HF Referat") there, so let me suggest this: Meet there at 13:00 (local), since at this time none of the lectures takes place. I am usually QRV on 439.475 MHz, FM simplex (if that frequency isn't occupied with some digital stuff there). 73, Wolf DL4YHF . > ------------------------------------------------------------------------ > Date: Thu, 16 Jun 2011 13:58:09 +0200 > From: schaefer@iup.uni-heidelberg.de > To: rsgb_lf_group@blacksheep.org > CC: paul@abelian.netcom.co.uk; bernd.grupe@t-online.de; > contact@vlf.it; matthias.kirschenstein@googlemail.com > Subject: VLF: DK7FC's 11th VLF kite experiment > > Dear VLF group, > > Since more than 4 months the wind and rain situation looks promising > for the weekend on my /p QTH in JN49IS36VH. So i plan to do my *11th > VLF kite experiment* this weekend, *either on Sat 18th or Sun 19th > June 2011*, will be announced on friday. I already announced it at the > German air traffic control and just got a phone call were the > permission was granted. > > The plan is to come *on air at about 6 UTC*. > > The antenna will be the *300m* vertical kite antenna. I'll plan to > serve the *bands 33km and 46km, i.e. 8970 Hz and 6470 Hz. *Since i > made a new tap on the TX coil i can now resonate the 300m antenna on > 6470 Hz too. This should give a about 4 dB stronger signal on 46km. > > Since the gap of low QRN is much smaller now, the experiment will not > take many hours, maybe just 4 or 5. > > Maybe i can get the 4 kVA generator and will produce a 6 dB stronger > signal but this is not clear so far. Otherwise i am limited to 550 W > TX power. I will limit my antenna current to 2 A in order to prevent a > HV breakdown on the coil and due to thermal losses. At 2 A antenna > current i should have up to 250 mW ERP! > > The program is to start a longer dash, about 40 minutes, GPS locked on > 8970.00000 Hz, then a message in DFCW-600. Depending on the feedback > of receiving stations i will try to send DFCW-60 or DFCW-10 or DFCW-3 > and CW. > Then i'll move to 6470 Hz, transmitting a 40 minutes dash and a "K" in > DFCW-600 or so. > > As usual the signals will be visible on my grabber in 40 km distance: > http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html > for 8970 Hz and > http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html > for 6470 Hz (spectrogram still not available) > > but surely visible on many other grabbers too ( see > https://sites.google.com/site/sub9khz/vlf-grabbers for a list of > available Dreamer Band grabbers). > > Some new VLF receivers appeared since my last experiment. Two of them are: > http://qsl.net/4x1rf/yo/vlfgrabber.htm (1435 km) > http://www.ok2bvg.cz/vlfgrabber/ (598 km) > Leaving a trace on these and all other new and old VLF stations is the > goal! Despite high QRN and the longest days in the year (here in EU) i > am optimistic. > > Maybe Markus/DF6NM or Marco/DD7PC or someone else in DL wants to be > available on the phone for QSP to the reflector? > > Looking forward to the weekend and hope all works well and we'll have > much activity. > > Best 73, Stefan/DK7FC > > --------------080601080300060302070203 Content-Type: text/html; charset=ISO-8859-2 Content-Transfer-Encoding: 8bit Hi Lubos, Stefan, and the group,

Sri I will miss this opportunity but..

Lubos wrote:
BTW: I am going to visit Hamfest in Fridrichshafen next week. Will you be there as well?  

I will be there most likely on Friday 24th, the first day of the fair. I usually met Walter DJ2LF at the DARC HF Stand ("HF Referat") there, so let me suggest this:
Meet there at 13:00 (local), since at this time none of the lectures takes place.
I am usually QRV on 439.475 MHz, FM simplex (if that frequency isn't occupied with some digital stuff there).

73,
   Wolf  DL4YHF .

Date: Thu, 16 Jun 2011 13:58:09 +0200
From: schaefer@iup.uni-heidelberg.de
To: rsgb_lf_group@blacksheep.org
CC: paul@abelian.netcom.co.uk; bernd.grupe@t-online.de; contact@vlf.it; matthias.kirschenstein@googlemail.com
Subject: VLF: DK7FC's 11th VLF kite experiment

Dear VLF group,

Since more than 4 months the wind and rain situation looks promising for the weekend on my /p QTH in JN49IS36VH. So i plan to do my 11th VLF kite experiment this weekend, either on Sat 18th or Sun 19th June 2011, will be announced on friday. I already announced it at the German air traffic control and just got a phone call were the permission was granted.

The plan is to come on air at about 6 UTC.

The antenna will be the 300m vertical kite antenna. I'll plan to serve the bands 33km and 46km, i.e. 8970 Hz and 6470 Hz. Since i made a new tap on the TX coil i can now resonate the 300m antenna on 6470 Hz too. This should give a about 4 dB stronger signal on 46km.

Since the gap of low QRN is much smaller now, the experiment will not take many hours, maybe just 4 or 5.

Maybe i can get the 4 kVA generator and will produce a 6 dB stronger signal but this is not clear so far. Otherwise i am limited to 550 W TX power. I will limit my antenna current to 2 A in order to prevent a HV breakdown on the coil and due to thermal losses. At 2 A antenna current i should have up to 250 mW ERP!

The program is to start a longer dash, about 40 minutes, GPS locked on 8970.00000 Hz, then a message in DFCW-600. Depending on the feedback of receiving stations i will try to send DFCW-60 or DFCW-10 or DFCW-3 and CW.
Then i'll move to 6470 Hz, transmitting a 40 minutes dash and a "K" in DFCW-600 or so.

As usual the signals will be visible on my grabber in 40 km distance:
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html for 8970 Hz and
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html for 6470 Hz (spectrogram still not available)

but surely visible on many other grabbers too ( see https://sites.google.com/site/sub9khz/vlf-grabbers for a list of available Dreamer Band grabbers).

Some new VLF receivers appeared since my last experiment. Two of them are:
http://qsl.net/4x1rf/yo/vlfgrabber.htm  (1435 km)
http://www.ok2bvg.cz/vlfgrabber/    (598 km)
Leaving a trace on these and all other new and old VLF stations is the goal! Despite high QRN and the longest days in the year (here in EU) i am optimistic.

Maybe Markus/DF6NM or Marco/DD7PC or someone else in DL wants to be available on the phone for QSP to the reflector?

Looking forward to the weekend and hope all works well and we'll have much activity.

Best 73, Stefan/DK7FC



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