Return-Path: X-Spam-DCC: paranoid 1233; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_30_40,HTML_MESSAGE,SPF_PASS,UNPARSEABLE_RELAY autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id u9EM4BaW008516 for ; Sat, 15 Oct 2016 00:04:11 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1bvAUP-0004XL-EW for rs_out_1@blacksheep.org; Fri, 14 Oct 2016 22:58:05 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1bvAUP-0004XC-56 for rsgb_lf_group@blacksheep.org; Fri, 14 Oct 2016 22:58:05 +0100 Received: from omr-m001e.mx.aol.com ([204.29.186.1]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.87) (envelope-from ) id 1bvAUM-0000i2-89 for rsgb_lf_group@blacksheep.org; Fri, 14 Oct 2016 22:58:04 +0100 Received: from mtaomg-mae01.mx.aol.com (mtaomg-mae01.mx.aol.com [172.26.254.143]) by omr-m001e.mx.aol.com (Outbound Mail Relay) with ESMTP id 7DE7E3800113 for ; Fri, 14 Oct 2016 17:57:59 -0400 (EDT) Received: from core-acb04f.mail.aol.com (core-acb04.mail.aol.com [172.27.24.4]) by mtaomg-mae01.mx.aol.com (OMAG/Core Interface) with ESMTP id B7DB538000084 for ; Fri, 14 Oct 2016 17:57:58 -0400 (EDT) Received: from 188.192.95.60 by webprd-a75.mail.aol.com (10.72.52.225) with HTTP (WebMailUI); Fri, 14 Oct 2016 17:57:57 -0400 Date: Fri, 14 Oct 2016 17:57:57 -0400 From: Markus Vester To: rsgb_lf_group@blacksheep.org Message-Id: <157c533a19a-3cd0-4faf@webprd-a75.mail.aol.com> In-Reply-To: <58013DE1.26906.114C7E5@roelof.ndb.demon.nl> MIME-Version: 1.0 X-MB-Message-Source: WebUI X-MB-Message-Type: User X-Mailer: JAS STD X-Originating-IP: [188.192.95.60] x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1476482279; bh=FZhiDe3vimDlUx8KeFop64xDnxIdYJcf+p/EvqXQTIQ=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=chqgWGSmJ5xTbaZt6dC6VkvCH3T/YbGvUwO1eX6TQ/p7ssnDJ0OpJ8xgPNftKiSMw NhAd5VhXuW4YfFLAOWaX0IcHzw9gn9StPv0wEm7e0n30QFrjevR2TYIyOpikhFrKvE gkgUrLwmXMr2a8oKJ7+mJ3ZihBXz4H7mqQt6A0b0= x-aol-sid: 3039ac1afe8f580154e63df6 X-Scan-Signature: 4c0633a540d76adc241b9d3cede72a57 Subject: Re: LF: Re: [rsgb_lf_group] MF: DJ0ABR -> JA3TVF in WSPR Content-Type: multipart/alternative; boundary="----=_Part_26613_980013814.1476482277784" 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.11 Content-Length: 3116 Status: O X-Status: X-Keywords: X-UID: 9085 ------=_Part_26613_980013814.1476482277784 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Something strange happened on LF around the same time: Looking at the WSPR = spectrogram, I happened to notice a marked noise increase for about eight m= inutes around 19:15 UT. It is visible as a purple strip on two grabber scre= enshots:=20 http://df6nm.bplaced.net/LF/vlf_lf_icm_2013/test1610131915.jpg http://df6nm.bplaced.net/LF/vlf_lf_icm_2013/test1610131930.jpg The noise band was caused by an unusually intense Luxembourg effect, with a= pair of strong VLF stations (GQD and DHO) acting as a ionospheric heaters,= impressing their difference frequency onto the DCF39 carrier: 138.83 - (23.4 - 22.1) kHz =3D 137.53 kHz Best 73, Markus (DF6NM) -----Urspr=C3=BCngliche Mitteilung-----=20 Von: Roelof Bakker An: rsgb_lf_group Verschickt: Fr, 14 Okt 2016 10:27 pm Betreff: LF: Re: [rsgb_lf_group] MF: DJ0ABR -> JA3TVF in WSPR Hello Clemens, There certainly was an opening to Asia last night. At 19:28 UTC, I logged a NAVTEX station from Malaysia on 518 kHz=20 over a distance of 10.015 km. 73, Roelof, pa0rdt ------=_Part_26613_980013814.1476482277784 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Something strange happened on LF around the=  same time: Looking at the WSPR spectrogram, I happened to notice= a marked noise increase for about eight minutes around 19:1= 5 UT. It is visible as a purple strip on two grabber screenshots:=  
http://df6nm.bplaced.net/LF/vlf_lf_icm_2013/test1610= 131915.jpg
http://df6nm.bplaced.net/LF/vlf_lf_icm_2013/test1610131930.jp= g

The noise band was caused by an unusually intense L= uxembourg effect, with a pair of strong VLF stations (GQD and DHO)&nbs= p;acting as a ionospheric heaters, impressing their difference frequen= cy onto the DCF39 carrier:

138.83 - (23.4 - 22.1) kHz =3D  = ;137.53 kHz

Best 73,
Markus (DF6NM)

-----Urspr=C3=BCngliche Mitteilung-----
Von: Roelof Ba= kker <roelof@ndb.demon.nl>
An: rsgb_lf_group <rsgb= _lf_group@blacksheep.org>
Verschickt: Fr, 14 Okt 2016 10= :27 pm
Betreff: LF: Re: [rsgb_lf_group] MF: DJ0ABR -> JA= 3TVF in WSPR

Hello Clemens,

There certainly was an opening to Asia last nigh= t.
At 19:28 UTC, I logged a NAVTEX station from Malaysia on= 518 kHz
over a distance of 10.015 km.
73,
Roelof, pa0rdt



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