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[195.171.43.25]) by mx.google.com with ESMTP id cs3si13138799wjc.60.2013.12.27.10.33.22 for ; Fri, 27 Dec 2013 10:33:23 -0800 (PST) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1VwblY-0006o3-PF for rs_out_1@blacksheep.org; Fri, 27 Dec 2013 18:04:08 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1VwblY-0006nu-6V for rsgb_lf_group@blacksheep.org; Fri, 27 Dec 2013 18:04:08 +0000 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1VwblW-0003Kk-0n for rsgb_lf_group@blacksheep.org; Fri, 27 Dec 2013 18:04:07 +0000 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 rBRI45i6017213 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 27 Dec 2013 19:04:05 +0100 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id rBRI45su011602 for ; Fri, 27 Dec 2013 19:04:05 +0100 Message-ID: <52BDC10A.20409@iup.uni-heidelberg.de> Date: Fri, 27 Dec 2013 19:03:54 +0100 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 References: <02ca01cf028f$c157cf50$44076df0$@comcast.net> In-Reply-To: <02ca01cf028f$c157cf50$44076df0$@comcast.net> X-Spam-Score: -2.9 (--) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hello Jim, Am 27.12.2013 00:10, schrieb hvanesce: > > Would 500W into a 300m antenna imply approximately 10mW < ERP < 50mW > after coil losses, at 9kHz? > I assume that question is directed to me? In these experiments i got up to 58mW ERP. A rough calculation of course. It depends on the angle of the kite, which can vary from 80 deg to 40 deg. The average on a windy day is something arround 65 deg. But for a 300m vertical you will need a special permission in Germany and the air traffic control must be informed 48 hours in advance (giving out a NOTAM). So that was quite an effort. But most exciting! :-) My special permission expired some years ago. Now the signal is 20 dB weaker, or must be 100x slower. But here i have mains power and don't need wind any more.. [...] Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [129.206.210.211 listed in list.dnswl.org] -0.6 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: ffe713a28f995f248841b38a647a96f7 Subject: Re: VLF: 8969.99 Content-Type: multipart/alternative; boundary="------------090506050502000109010804" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.2 required=5.0 tests=HTML_50_60,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 Status: O X-Status: X-Keywords: X-UID: 3509 This is a multi-part message in MIME format. --------------090506050502000109010804 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hello Jim, Am 27.12.2013 00:10, schrieb hvanesce: > > Would 500W into a 300m antenna imply approximately 10mW < ERP < 50mW > after coil losses, at 9kHz? > I assume that question is directed to me? In these experiments i got up to 58mW ERP. A rough calculation of course. It depends on the angle of the kite, which can vary from 80 deg to 40 deg. The average on a windy day is something arround 65 deg. But for a 300m vertical you will need a special permission in Germany and the air traffic control must be informed 48 hours in advance (giving out a NOTAM). So that was quite an effort. But most exciting! :-) My special permission expired some years ago. Now the signal is 20 dB weaker, or must be 100x slower. But here i have mains power and don't need wind any more.. 73, Stefan/DK7FC > Does your antenna orientation and elevation angle vary? (my maximum > integration time is dependent on phase rate of change which is > dependent on the antenna angle, even if the antenna angle is constant) > > I enjoyed seeing the strong signals earlier this week on DK7FC, PA1SDB > and other grabbers, thanks! > > 73, Jim AA5BW > > *From:* owner-rsgb_lf_group@blacksheep.org > [mailto:owner-rsgb_lf_group@blacksheep.org] *On Behalf Of > *uwe-jannsen@kabelmail.de > *Sent:* Thursday, December 26, 2013 2:53 PM > *To:* rsgb_lf_group@blacksheep.org > *Subject:* Re: Re: VLF: 8969.99 > > Hi Stefan and Eddy, > > thanks for the reports. the equipment here is the same as ever (500W > output into 300m aerial wire). > Markus asked for some OPERA OP4H tests. We have to schedule that test. > > GL > > Uwe/dj8wx as Tom dj8CAT. > > ------------------------------------------------------------------------ > > Von: rsgb_lf_group@blacksheep.org > Gesendet: 26.12.2013 13:55 > An: rsgb_lf_group@blacksheep.org > Betreff: Re: VLF: 8969.99 > > ------------------------------------------------------------------------ > > > Hi Uwe, Tom, VLF, > > Best signal ever from Tom, capture attached. Is it due to the > propagation or did it improve your signal? > What about some tests in OPDS32 or maybe JT9-30? Unfortunately there > is permanent rain here so i have to wait some days longer. > > 73, Stefan/DK7FC > > Am 26.12.2013 10:58, schrieb g3zjo: > > Hi All > > Yes, yesterday was quieter on 8.9KHz with less *cat*astrophic noise > pulses. This meant that although Uwe's signal was less strong than > during other tests I was in the *cat*chment area. The low signal level > means there are breaks in the line here in both 424uH and 47uHz FFT > but I was able to *cat*ch some nice periods when the signal in 47uHz > was10dB above the noise peaks. I can *cat*egorically confirm reception. > > Thanks Uwe and (Tom DL8*CAT*) for the signal. > > 73 Eddie G3ZJO > http://www.g3zjo.talktalk.net/vlfgrabber.htm > --------------090506050502000109010804 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hello Jim,

Am 27.12.2013 00:10, schrieb hvanesce:

Would 500W into a 300m antenna imply approximately 10mW < ERP < 50mW after coil losses, at 9kHz?

I assume that question is directed to me?
In these experiments i got up to 58mW ERP. A rough calculation of course. It depends on the angle of the kite, which can vary from 80 deg to 40 deg. The average on a windy day is something arround 65 deg.
But for a 300m vertical you will need a special permission in Germany and the air traffic control must be informed 48 hours in advance (giving out a NOTAM). So that was quite an effort. But most exciting! :-) My special permission expired some years ago.
Now the signal is 20 dB weaker, or must be 100x slower. But here i have mains power and don't need wind any more..

73, Stefan/DK7FC

 

Does your antenna orientation and elevation angle vary? (my maximum integration time is dependent on phase rate of change which is dependent on the antenna angle, even if the antenna angle is constant)

 

I enjoyed seeing the strong signals earlier this week on DK7FC, PA1SDB and other grabbers, thanks!

 

73,  Jim AA5BW

 

 

 

From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of uwe-jannsen@kabelmail.de
Sent: Thursday, December 26, 2013 2:53 PM
To: rsgb_lf_group@blacksheep.org
Subject: Re: Re: VLF: 8969.99

 

Hi Stefan and Eddy,

thanks for the reports. the equipment here is the same as ever (500W output into 300m aerial wire).
Markus asked for some OPERA OP4H tests. We have to schedule that test.

GL

Uwe/dj8wx as Tom dj8CAT.

 

Von: rsgb_lf_group@blacksheep.org
Gesendet: 26.12.2013 13:55
An: rsgb_lf_group@blacksheep.org
Betreff: Re: VLF: 8969.99


Hi Uwe, Tom, VLF,

Best signal ever from Tom, capture attached. Is it due to the propagation or did it improve your signal?
What about some tests in OPDS32 or maybe JT9-30? Unfortunately there is permanent rain here so i have to wait some days longer.

73, Stefan/DK7FC

Am 26.12.2013 10:58, schrieb g3zjo:

Hi All

Yes, yesterday was quieter on 8.9KHz with less catastrophic noise pulses. This meant that although Uwe's signal was less strong than during other tests I was in the catchment area. The low signal level means there are breaks in the line here in both 424uH and 47uHz FFT but I was able to catch some nice periods when the signal in 47uHz was10dB above the noise peaks. I can categorically confirm reception.

Thanks Uwe and (Tom DL8CAT) for the signal.

73 Eddie G3ZJO
http://www.g3zjo.talktalk.net/vlfgrabber.htm

--------------090506050502000109010804--