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 vB2EJcUs012177 for ; Sat, 2 Dec 2017 15:19:41 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eL8YJ-0002rX-RB for rs_out_1@blacksheep.org; Sat, 02 Dec 2017 14:13:59 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eL8YB-0002rO-UE for rsgb_lf_group@blacksheep.org; Sat, 02 Dec 2017 14:13:51 +0000 Received: from omr-a020e.mx.aol.com ([204.29.186.66]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.89) (envelope-from ) id 1eL8Y8-0001Dp-46 for rsgb_lf_group@blacksheep.org; Sat, 02 Dec 2017 14:13:50 +0000 Received: from mtaomg-aab01.mx.aol.com (mtaomg-aab01.mx.aol.com [172.26.126.207]) by omr-a020e.mx.aol.com (Outbound Mail Relay) with ESMTP id B867B38000B8 for ; Sat, 2 Dec 2017 09:13:45 -0500 (EST) Received: from core-acc05a.mail.aol.com (core-acc05.mail.aol.com [172.26.125.15]) by mtaomg-aab01.mx.aol.com (OMAG/Core Interface) with ESMTP id C0F0238000081 for ; Sat, 2 Dec 2017 09:13:44 -0500 (EST) Received: from 188.194.222.230 by webjas-vaa019.srv.aolmail.net (10.96.33.22) with HTTP (WebMailUI); Sat, 02 Dec 2017 09:13:43 -0500 Date: Sat, 2 Dec 2017 09:13:44 -0500 From: Markus Vester To: rsgb_lf_group@blacksheep.org Message-Id: <16017936516-1724-fb3@webjas-vaa019.srv.aolmail.net> In-Reply-To: References: MIME-Version: 1.0 X-MB-Message-Source: WebUI X-MB-Message-Type: User X-Mailer: JAS STD X-Originating-IP: [188.194.222.230] x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1512224025; bh=jS+CIspV45enTSjuc9sAHOk1erUkPZGztVBPeom+MwI=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=sp2Ou8R1oa3QfigYxaN25mXcWBGAP9t1WnKzEkg7o2JcUkDOVaEudCwYvSE70KKbQ tqfFYKAnVRF7SWrGFlkzU+aqU2N+iH9pnX133aki9015nvS2YLZYZP9DXMIyqK75Hp QwOXoZimC3iEFQCBKDpRvQscPpNYTAyZLippi8Bk= x-aol-sid: 3039ac1a7ecf5a22b5180062 X-Spam-Score: 0.0 (/) 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: Hi Dex and Paul, great job! That brings back good memories from 2014 http://abelian.org/vlf/tmp/w4dex_140602a.gif which ultimately led to several transatlantic EbNaut detections. We'll need to set up new grabber instances at DL0AO for your frequency. Or would you consider QSYing into the "waterhole" near 8270 Hz? [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 20fb97b64762a0bd80c12a4b2f6724b0 Subject: Re: LF: W4DEX at 8540 Hz in Todmorden Content-Type: multipart/alternative; boundary="----=_Part_4879_605178241.1512224023829" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.5 required=5.0 tests=HTML_20_30,HTML_MESSAGE, MAILTO_TO_SPAM_ADDR 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 ------=_Part_4879_605178241.1512224023829 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi Dex and Paul, great job! That brings back good memories from 2014 http://abelian.org/vlf/tmp/w4dex_140602a.gif which ultimately led to several transatlantic EbNaut detections. We'll need to set up new grabber instances at DL0AO for your frequency. Or = would you consider QSYing into the "waterhole" near 8270 Hz? Best 73, Markus (DF6NM) -----Urspr=C3=BCngliche Mitteilung-----=20 Von: Paul Nicholson An: rsgb_lf_group Verschickt: Sa, 2. Dez 2017 14:05 Betreff: LF: W4DEX at 8540 Hz in Todmorden Dex surprised me last night with a carrier on 8540 Hz, GPS-locked and the ERP would be circa 100uW. Tx was stable from 21:25, detectable in the UK by 22:30, and a good overnight signal until 03:00 when Dex planned to switch off. http://abelian.org/vlf/tmp/171202a.gif Signal about 0.1fT and 30nV/m, about 30 electrons worth of charge on the new E-field antenna. Anything with double figures is a good amateur signal! H-field: -27.7 dB in 1Hz, phase -109.4 deg; E-field: -26.0 dB in 1Hz, phase -108.1 deg; It's not unusual for the new E-field rx to do better than the loop rx. Looks like I need to hurry up with the upgrade to the H rx! I've cleared bench space for the replacement and parts are on order. I measured the bearing using three different methods: Watson-Watt goniometry: 273.1 deg Poynting vector: 287.5 deg Tsuruda/Hayashi NPE: 282.3 deg The great circle bearing is actually 284.6 deg. NPE should be the most accurate method - no polarisation error but relies on precise relative phase measurements between the three channels. -- Paul Nicholson -- ------=_Part_4879_605178241.1512224023829 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Hi Dex and Paul,

great job! That bri= ngs back good memories from 2014
http://abelian.org/vlf/tmp/w4dex_1= 40602a.gif
which ultimately led to several transatlantic EbNaut detectio= ns.

We'll need to set up new grabber instances at DL0AO for your fre= quency. Or would you consider QSYing into the "waterhole" near 8270 Hz= ?

Best 73,
Markus (DF6NM)


-----Urspr=C3=BCngliche Mitteilung-----
Von: Pa= ul Nicholson <vlf0403@abelian.org>
An: rsgb_lf_group = <rsgb_lf_group@blacksheep.org>
Verschickt: Sa, 2. Dez= 2017 14:05
Betreff: LF: W4DEX at 8540 Hz in Todmorden


Dex surprised me last n= ight with a carrier on 8540 Hz,
GPS-locked and the ERP woul= d be circa 100uW.

Tx was stable from 21:25= , detectable in the UK by 22:30,
and a good overnight signa= l until 03:00 when Dex planned to
switch off.

http://abelian.org/vlf/tmp/171202a.gif

Signal about 0.1fT and 30nV/m, about 30 elect= rons worth of
charge on the new E-field antenna. Anything = with double
figures is a good amateur signal!

H-field: -27.7 dB in 1Hz, phase -109.4 deg;
E-field: -26.0 dB in 1Hz, phase -108.1 deg;

It's not unusual for the new E-field rx to do better than theloop rx. Looks like I need to hurry up with the upgrade to<= br abp=3D"2711">the H rx! I've cleared bench space for the replacement an= d
parts are on order.

I me= asured the bearing using three different methods:

Watson-Watt goniometry: 273.1 deg

Poynting vector: 287.5 deg

Tsuruda= /Hayashi NPE: 282.3 deg

The great circle = bearing is actually 284.6 deg.

NPE should = be the most accurate method - no polarisation error
but rel= ies on precise relative phase measurements between the
thre= e channels.

--
Paul Nichol= son
--


------=_Part_4879_605178241.1512224023829--