Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id vASCKPME026013 for ; Tue, 28 Nov 2017 13:20:29 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eJemI-0006UI-AH for rs_out_1@blacksheep.org; Tue, 28 Nov 2017 12:14:18 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eJemH-0006U9-HQ for rsgb_lf_group@blacksheep.org; Tue, 28 Nov 2017 12:14:17 +0000 Received: from gmy2-mh806.smtproutes.com ([94.186.192.135]) by relay1.thorcom.net with esmtp (Exim 4.89) (envelope-from ) id 1eJemA-0007HE-IL for rsgb_lf_group@blacksheep.org; Tue, 28 Nov 2017 12:14:16 +0000 X-Katharion-ID: 1511871238.67938.gmy2-mh806 Received: from servigilant.vigilant.es ([85.60.35.36]) by gmy2-mh806.smtproutes.com [(94.186.192.135)] with ESMTP via TCP (TLSv1/TLS_DHE_RSA_WITH_AES_256_CBC_SHA); 28 Nov 2017 12:13:58 +0000 Received: from servigilant.vigilant.local ([fe80::c40d:8140:d722:5448]) by servigilant.vigilant.local ([fe80::c40d:8140:d722:5448%13]) with mapi id 14.03.0123.003; Tue, 28 Nov 2017 13:13:52 +0100 From: =?iso-8859-1?Q?VIGILANT_Luis_Fern=E1ndez?= To: "rsgb_lf_group@blacksheep.org" Thread-Topic: VLF: DK7FC close to SAQ Thread-Index: AQHTaDsURqmUbcQy5ECxE5GZFIsJoKMpsfJA Date: Tue, 28 Nov 2017 12:13:51 +0000 Message-ID: <579355A36AEE9D4FA555C45D556003AB9AAAE36E@servigilant.vigilant.local> References: <58482DA2250CDA18@rgout04.bt.lon5.cpcloud.co.uk> <832ff5d4-3a3c-f846-0e1d-834a63a15a10@psk31.plus.com> In-Reply-To: <832ff5d4-3a3c-f846-0e1d-834a63a15a10@psk31.plus.com> Accept-Language: es-ES, en-US Content-Language: es-ES X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [192.168.0.18] MIME-Version: 1.0 X-Spam-Score: 0.8 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Congratulations Eddie :) A nice and clear trace in your spectrogram I'm still digging in to get a trace. Got some pixels at 179uHz but nothing clear enough I have almost double distance to Stefan than you. Rx is similar but noise here is high [...] Content analysis details: (0.8 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 T_KAM_HTML_FONT_INVALID BODY: Test for Invalidly Named or Formatted Colors in HTML 0.0 HTML_MESSAGE BODY: HTML included in message 0.1 URIBL_SBL_A Contains URL's A record listed in the SBL blocklist [URIs: df6nm.bplaced.net] 0.6 URIBL_SBL Contains an URL's NS IP listed in the SBL blocklist [URIs: df6nm.bplaced.net] 0.0 T_REMOTE_IMAGE Message contains an external image X-Scan-Signature: a9f27894b14321629f793c65c0512237 Subject: RE: VLF: DK7FC close to SAQ Content-Type: multipart/alternative; boundary="_000_579355A36AEE9D4FA555C45D556003AB9AAAE36Eservigilantvigi_" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.3 required=5.0 tests=HTML_50_60,HTML_MESSAGE, HTML_TAG_EXISTS_TBODY,TO_ADDRESS_EQ_REAL 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 --_000_579355A36AEE9D4FA555C45D556003AB9AAAE36Eservigilantvigi_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Congratulations Eddie :) A nice and clear trace in your spectrogram I'm still digging in to get a trace. Got some pixels at 179uHz but nothing = clear enough I have almost double distance to Stefan than you. Rx is similar but noise h= ere is high Set another spectrogram to 47uHz 100 minutes per pixel but will take time t= o get results https://ea5dom.ure.es/grabber/index.html 73 de Luis EA5DOM De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blackshe= ep.org] En nombre de g3zjo Enviado el: martes, 28 de noviembre de 2017 12:22 Para: rsgb_lf_group@blacksheep.org Asunto: Re: VLF: DK7FC close to SAQ Hi Dave Stefan's e-probe design for 8.7kHz antenna and sound card RX. The BPF in th= e probe has quite some cut off outside sub 9kHz but maybe that's good due t= o the adjacent big boys. 73 Eddie On 28/11/2017 10:58, Dave wrote: Hi, What antenna and RX are you using for VLF, Eddie? 73, Dave G3WCB IO80EI ________________________________ From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of g3zjo Sent: 28 November 2017 10:49 To: rsgb_lf_group@blacksheep.org Subject: Re: VLF: DK7FC close to SAQ Left it on overnight. Would you like it on 24/7, I see diurnal variations similar to Marcus but m= ore pronounced due to my lower signal strength. 73 Eddie On 27/11/2017 20:30, g3zjo wrote: Hi Stefan I didn't quite believe what I was reading you may like to take a look at my= Grabber. http://www.qsl.net/g3zjo/vlfgrabber 73 Eddie On 27/11/2017 09:34, DK7FC wrote: Hello Markus, thanks for the feedback. Wonderful, now it is 30 dB in 424 uHz. DL0AO could= run a 3.8 mHz '600' RDF spectrogram and a phase and signal level plot, so = we could see propagation effects much better. You could already see QRSS-60 from me! I will try that soon. The carrier is still on the air. It will run the whole day and night... 73, Stefan Am 26.11.2017 15:59, schrieb Markus Vester: Yeah it's there! More than 20 dB SNR at DL0AO: http://df6nm.bplaced.net/dl0= ao/VLFgrabber/vlfgrabber_dl0ao_test.htm Excellent activity! 73, Markus (DF6NM) -----Urspr=FCngliche Mitteilung----- Von: DK7FC An: rsgb_lf_group Verschickt: So, 26. Nov 2017 0:42 Betreff: VLF: DK7FC close to SAQ Hi VLF, Since 23 UTC a 700 mA carrier is running on 17.4701 kHz! It is a little surprise to the VLF community i think ;-) Legal? Yes: http://www.iup.uni-heidelberg.de/schaefer_vlf/VLF/17,47kHz_Sond= erlizenz.jpg Actually the document has 3 pages but the other ones are no so relevant. My ERP is limited to 5 mW. I did not request more because more isn't possib= le anyway with this antenna. I wound a big single layer coil with 0.5 mm enameled wire on a PVC tube wit= h 315 mm outher diameter. 0.7 A is just a first careful step. The coil is designed to hold 1.5 A 'key= down'. The carrier will run the whole night and even tomorrow at daytime. Worldwide reports are welcome ;-) It is not sub-9-kHz but still VLF, the 17 km band!! So give it chance :-) The tree has still some solar power to stream the signal from the EW loop d= own to the city, so there is a feedback spectrogram at http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html 73, Stefan PS: I still can hear that tone of the coil. It is terrible! Be happy when y= ou are older than me! [https://ipmcdn.avast.com/images/icons/icon-envelope-tick-round-orange-anim= ated-no-repeat-v1.gif] Virus-free. www.avast.com --_000_579355A36AEE9D4FA555C45D556003AB9AAAE36Eservigilantvigi_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Congratula= tions Eddie J

A nice and clear trace in your spectrogram

 

I’m still digging in to get a trace. Got some pixels at 179uHz b= ut nothing clear enough

I have almost double distance to Stefan than you. Rx is similar but no= ise here is high

 

Set another spectrogram to 47uHz 100 minutes per pixel but will take t= ime to get results

 

https://ea5dom.ure.es/grabber/index.html

 

73 de Luis

EA5DOM

 

De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep= .org] En nombre de g3zjo
Enviado el: martes, 28 de noviembre de 2017 12:22
Para: rsgb_lf_group@blacksheep.org
Asunto: Re: VLF: DK7FC close to SAQ

 

Hi Dave

Stefan's e-probe design for 8.7kHz antenna and sound card RX. The BPF in= the probe has quite some cut off outside sub 9kHz but maybe that's good du= e to the adjacent big boys.

73 Eddie

 

On 28/11/2017 10:58, Dave wrote:

Hi,

 

What antenna and RX are you using for VLF,= Eddie?

 

73, Dave G3WCB IO80EI

 

From:<= span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:"Tahoma"= ;,sans-serif;color:windowtext"> owner-rsgb_lf_group@b= lacksheep.org [ma= ilto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of g3zjo
Sent: 28 November 2017 10:49
To: rsgb_lf_group@bl= acksheep.org
Subject: Re: VLF: DK7FC close to SAQ

 

Left it on overnight.

Would you like it on 24/7, I see diurnal variations similar to Marcus bu= t more pronounced due to my lower signal strength.

73 Eddie

 

On 27/11/2017 20:30, g3zjo wrote:

Hi Stefan

I didn't quite believe what I was reading you may like to take a look at= my Grabber.

http://www.qsl.net/g3zjo= /vlfgrabber

73 Eddie

 

On 27/11/2017 09:34, DK7FC wrote:

Hello Markus,

thanks for the feedback. Wonderful, now it is 30 dB in 424 uHz. DL0AO could= run a 3.8 mHz '600' RDF spectrogram and a phase and signal level plot, so = we could see propagation effects much better.
You could already see QRSS-60 from me! I will try that soon.
The carrier is still on the air. It will run the whole day and night...

73, Stefan

Am 26.11.2017 15:59, schrieb Markus Vester:

Hi VLF,

Since 23 UTC a 700 mA carrier is running on 17.4701 kHz!

It is a little surprise to the VLF community i think ;-)

Legal? Yes: http://www.iup.uni-heidelberg.de/schaefer_vlf/VLF/17,47kHz_Sonderlizenz.jpg=
Actually the document has 3 pages but the other ones are no so relevant. My ERP is limited to 5 mW. I did not request more because more isn't possib= le anyway with this antenna.

I wound a big single layer coil with 0.5 mm enameled wire on a PVC tube wit= h 315 mm outher diameter.

0.7 A is just a first careful step. The coil is designed to hold 1.5 A 'key= down'.

The carrier will run the whole night and even tomorrow at daytime.

Worldwide reports are welcome ;-)

It is not sub-9-kHz but still VLF, the 17 km band!! So give it chance :-)
The tree has still some solar power to stream the signal from the EW loop d= own to the city, so there is a feedback spectrogram at
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7F= C_VLF_Grabber2.html


73, Stefan

PS: I still can hear that tone of the coil. It is terrible! Be happy when y= ou are older than me!

 

 

 

Virus-free= . www.avast.com

 

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