Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mh03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 1796338000088; Tue, 14 Jun 2011 06:19:51 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1QWQhZ-0003RH-HW for rs_out_1@blacksheep.org; Tue, 14 Jun 2011 11:18:29 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1QWQhY-0003R8-NZ for rsgb_lf_group@blacksheep.org; Tue, 14 Jun 2011 11:18:28 +0100 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1QWQhW-0002Jm-IJ for rsgb_lf_group@blacksheep.org; Tue, 14 Jun 2011 11:18:28 +0100 Received: from extmail.urz.uni-heidelberg.de (extmail.urz.uni-heidelberg.de [129.206.100.140]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id p5EAIPvQ007289 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 14 Jun 2011 12:18:25 +0200 Received: from [147.142.8.192] (vpn508-192.rzuser.uni-heidelberg.de [147.142.8.192]) by extmail.urz.uni-heidelberg.de (8.13.4/8.13.1) with ESMTP id p5EAINQg025658 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 14 Jun 2011 12:18:24 +0200 Message-ID: <4DF73576.4070405@iup.uni-heidelberg.de> Date: Tue, 14 Jun 2011 12:18:30 +0200 From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.11) Gecko/20100711 Thunderbird/3.0.6 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <15528.29cd1840.3b267cd9@aol.com> <4DF52F44.80500@talktalk.net> <4DF53655.40001@iup.uni-heidelberg.de> <8024ACF0F5734035BFE8E7BBDDF47EA8@a8b21ba06852476> <002f01cc29f2$be0a1ce0$0301a8c0@your91hoehfy9g> <2F6C8B8017984C2A8563736DA67284AA@PC2> <4DF6843A.5080908@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: LF: VLF in Spain Content-Type: multipart/alternative; boundary="------------050502090007010303070508" 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_40_50,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: 1:2:500392448:93952408 X-AOL-SCOLL-URL_COUNT: 2 x-aol-sid: 3039ac1d60d74df735c64cd2 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. --------------050502090007010303070508 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay2.uni-heidelberg.de id p5EAIPvQ007289 Hello Jos=E9, OK. Do you already have a receiver for VLF? If so, which one? The PC's=20 soundcard? Or do you just guess that you have strong QRM? Many stations are in the city, like 4X1RF, SQ5BPF and me. Anyway there=20 is good reception, 4X1RF even at above 2500 km! Others are in the=20 countryside and have never really got good reception, so mostly its an=20 EMC issue. Thus i would suggest to built a suitable antenna and run a suitable=20 software and monitor the total spectrum of your soundcard input which is=20 mostly 0...24 kHz, often called "wideband". You can see these windows=20 running on many grabbers such as http://www.mydarc.de/df6nm/vlf/vlfgrabber.htm http://www.ok2bvg.cz/vlfgrabber/ http://qsl.net/4x1rf/yo/vlfgrabber.htm http://simnet.is/halldorgudmunds/TF3HZ_VLFgrabber/index.html http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html and=20 many others. Then, you'll get immediately an impression of the actual situation and=20 see effects like mains hum, sferics and the Alphas system and some MSKs. Seeing the Alphas and the sferics (i.e. the gap arround 8...11 UTC) is a=20 first good indicator for sensitivity! Actually all you need is a few Euros to build that RX antenna which can=20 be a loop or a E field antenna. Mosty receptions were done with the E=20 field antennas which have some advantages due to their low weight and=20 volume. But loop antennas have shown very good results as well, mostly=20 in quiet locations (like Paul Nicholson, F4DTL, M0BMU...). 73, Stefan/DK7FC Am 14.06.2011 00:08, schrieb Jose Manuel: > Stefan, > I=B4ll try to do some experience on sub 9kHz reception; I=B4ll try to f= ind=20 > a quiet location on holiday, because I live in a very noisy urban=20 > environment. > Regarding 137 kHz I had some 2-way QSO=B4s in the past with your=20 > country, with Wolf, Markus and others, but currently my LF antenna is=20 > down and I need to repair the SLM as well. > 73 de Jos=E9, EA1PX > > ----- Original Message ----- > *From:* Stefan Sch=E4fer > *To:* rsgb_lf_group@blacksheep.org > > *Sent:* Monday, June 13, 2011 11:42 PM > *Subject:* Re: LF: ZEVS tonight.jpg > > Jos=E8, > > You can get many informations about the Dreamers Band (<9) at > G3XBMs sub 9 kHz website: https://sites.google.com/site/sub9khz/ > Here you find record lists and advice for antennas. And you can > get every information needed HERE! :-) > > 73, Stefan/DK7FC > > Am 13.06.2011 23:30, schrieb Jose Manuel: >> Mal and all, >> You know that reception on 9 kHz is much more difficult than on >> 137 kHz. >> I never tried to receive below 10 kHz, perhaps in a couple of >> weeks, when I=B4m on holiday ;-) >> 73, Jos=E9, EA1PX >> >> ----- Original Message ----- >> *From:* mal hamilton >> *To:* rsgb_lf_group@blacksheep.org >> >> *Sent:* Monday, June 13, 2011 7:53 PM >> *Subject:* Re: LF: ZEVS tonight.jpg >> >> Jose >> In the past you were able to copy me on CW no problem, with >> XBAND qso >> de mal/g3kev >> >> ----- Original Message ----- >> *From:* jos=E9 manuel >> *To:* rsgb_lf_group@blacksheep.org >> >> *Sent:* Monday, June 13, 2011 4:14 PM >> *Subject:* Re: LF: ZEVS tonight.jpg >> >> Hi Stefan and all, >> I=B4m in the NW of Spain, locator IN53ti, but with a very >> long path with you ;-) >> 73 de Jos=E9, EA1PX >> >> ----- Original Message ----- >> *From:* Stefan Sch=E4fer >> >> *To:* rsgb_lf_group@blacksheep.org >> >> *Sent:* Sunday, June 12, 2011 11:57 PM >> *Subject:* Re: LF: ZEVS tonight.jpg >> >> Eddie, >> >> Where in France will you be? >> http://no.nonsense.ee/qthmap/ :-) >> Will you be RX QRV on LF/VLF? If you are in the >> south, this would be an interesting region. >> Unfortunately there is nothing yet from Spain on VLF... >> >> QRN will be high i assume so maybe it wouldn't be >> easy. Anyway iz would be worth a try. BTW i just >> checked for wind and the next weekend looks promising >> so far. If it will hold on, i'll try a kite VLF >> experiment but still much can change until then... >> >> 73, Stefan/DK7FC >> >> >> >> Am 12.06.2011 23:27, schrieb qrss: >>> Hello Nicolas >>> >>> Yes almost 100% transmissions at 0800 and 1700UTC. >>> >>> Each data element is 4min and there are 6 of those >>> plus 'start' and 'space' makes 8 total, 32 minutes >>> then the final long carrier 'stop' is 1 Hour. >>> >>> Good luck with the antenna, yes urban noise is the >>> big problem. Soon I will come to France to try some >>> really quiet places, I look forward to that. >>> >>> 73 Eddie G3ZJO >>> >>> On 12/06/2011 21:34, F4DTL@aol.com wrote: >>>> Henny, Eddy beautifull captures. >>>> It's every day at the same hour ? 0800 and 1700 UTC = ? >>>> How long the ZVES transmissions ? >>>> I built an new VLF antenna and I'll start soon >>>> receptions.I would be in campaign to reduce urban >>>> noise. >>>> *F4DTL Nicolas JN18FP >>>> http://lfistes.erst.azerttyu.net/* >>> --------------050502090007010303070508 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hello José,

OK. Do you already have a receiver for VLF? If so, which one? The PC's soundcard? Or do you just guess that you have strong QRM?
Many stations are in the city, like 4X1RF, SQ5BPF and me. Anyway there is good reception, 4X1RF even at above 2500 km! Others are in the countryside and have never really got good reception, so mostly its an EMC issue.
Thus i would suggest to built a suitable antenna and run a suitable software and monitor the total spectrum of your soundcard input which is mostly 0...24 kHz, often called "wideband". You can see these windows running on many grabbers such as
http://www.mydarc.de/df6nm/vlf/vlfgrabber.htm
http://www.ok2bvg.cz/vlfgrabber/
http://qsl.net/4x1rf/yo/vlfgrabber.htm
http://simnet.is/halldorgudmunds/TF3HZ_VLFgrabber/index.html
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html and many others.
Then, you'll get immediately an impression of the actual situation and see effects like mains hum, sferics and the Alphas system and some MSKs.
Seeing the Alphas and the sferics (i.e. the gap arround 8...11 UTC) is a first good indicator for sensitivity!

Actually all you need is a few Euros to build that RX antenna which can be a loop or a E field antenna. Mosty receptions were done with the E field antennas which have some advantages due to their low weight and volume. But loop antennas have shown very good results as well, mostly in quiet locations (like Paul Nicholson, F4DTL, M0BMU...).

73, Stefan/DK7FC



Am 14.06.2011 00:08, schrieb Jose Manuel:
Stefan,
 
I´ll try to do some experience on sub 9kHz reception; I´ll try to find a quiet location on holiday, because I live in a very noisy urban environment.
 
Regarding 137 kHz I had some 2-way QSO´s in the past with your country, with Wolf, Markus and others, but currently my LF antenna is down and I need to repair the SLM as well.
 
 
73 de José, EA1PX
 
 
 
 
----- Original Message -----
Sent: Monday, June 13, 2011 11:42 PM
Subject: Re: LF: ZEVS tonight.jpg

Josè,

You can get many informations about the Dreamers Band (<9) at G3XBMs sub 9 kHz website: https://sites.google.com/site/sub9khz/
Here you find record lists and advice for antennas. And you can get every information needed HERE! :-)

73, Stefan/DK7FC

Am 13.06.2011 23:30, schrieb Jose Manuel:
Mal and all,
 
You know that reception on 9 kHz is much more difficult than on 137 kHz.
I never tried to receive below 10 kHz, perhaps in a couple of weeks, when I´m on holiday ;-)
 
73, José, EA1PX
 
 
----- Original Message -----
Sent: Monday, June 13, 2011 7:53 PM
Subject: Re: LF: ZEVS tonight.jpg

Jose
In the past you were able to copy me on CW no problem, with XBAND qso
de mal/g3kev
 
 
----- Original Message -----
Sent: Monday, June 13, 2011 4:14 PM
Subject: Re: LF: ZEVS tonight.jpg

Hi Stefan and all,
 
I´m in the NW of Spain, locator IN53ti, but with a very long path with you ;-)
 
73 de José, EA1PX
 
 
 
 
----- Original Message -----
Sent: Sunday, June 12, 2011 11:57 PM
Subject: Re: LF: ZEVS tonight.jpg

Eddie,

Where in France will you be? http://no.nonsense.ee/qthmap/ :-)
Will you be RX QRV on LF/VLF? If you are in the south, this would be an interesting region. Unfortunately there is nothing yet from Spain on VLF...

QRN will be high i assume so maybe it wouldn't be easy. Anyway iz would be worth a try. BTW i just checked for wind and the next weekend looks promising so far. If it will hold on, i'll try a kite VLF experiment but still much can change until then...

73, Stefan/DK7FC



Am 12.06.2011 23:27, schrieb qrss:
Hello Nicolas

Yes almost 100% transmissions at 0800 and 1700UTC.

Each data element is 4min  and there are 6 of those plus 'start' and 'space' makes 8 total, 32 minutes then the final long carrier 'stop' is 1 Hour.

Good luck with the antenna, yes urban noise is the big problem. Soon I will come to France to try some really quiet places, I look forward to that.

73 Eddie G3ZJO

On 12/06/2011 21:34, F4DTL@aol.com wrote:
Henny, Eddy beautifull captures.
 
It's every day at the same hour ? 0800 and 1700 UTC ?
How long the ZVES transmissions ?
I built an new VLF antenna and I'll start soon receptions.I would be in campaign to reduce urban noise.
 

--------------050502090007010303070508--