Return-Path: X-Spam-DCC: paranoid 1117; 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=-0.7 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_AOL_TAGS,HTML_50_60,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 u479QoNT030977 for ; Sat, 7 May 2016 11:26:50 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ayyRI-0004AE-Gh for rs_out_1@blacksheep.org; Sat, 07 May 2016 10:22:20 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ayyRH-0004A5-TR for rsgb_lf_group@blacksheep.org; Sat, 07 May 2016 10:22:19 +0100 Received: from omr-a019e.mx.aol.com ([204.29.186.67]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.87) (envelope-from ) id 1ayyRF-00037g-OT for rsgb_lf_group@blacksheep.org; Sat, 07 May 2016 10:22:18 +0100 Received: from mtaomg-aae02.mx.aol.com (mtaomg-aae02.mx.aol.com [172.27.1.100]) by omr-a019e.mx.aol.com (Outbound Mail Relay) with ESMTP id 394B73800084 for ; Sat, 7 May 2016 05:16:55 -0400 (EDT) Received: from core-acc04b.mail.aol.com (core-acc04.mail.aol.com [172.26.125.14]) by mtaomg-aae02.mx.aol.com (OMAG/Core Interface) with ESMTP id 0CB5838000081 for ; Sat, 7 May 2016 05:16:55 -0400 (EDT) To: rsgb_lf_group@blacksheep.org X-MB-Message-Source: WebUI X-MB-Message-Type: User MIME-Version: 1.0 From: Markus Vester X-Mailer: AOL Webmail BASIC Received: from 198.7.25.178 by webmail-vm184.sysops.aol.com (64.12.255.147) with HTTP (WebMailUI); Sat, 07 May 2016 05:16:54 -0400 Message-Id: <8D376585510A0A7-1468-7CC796@webmail-vm184.sysops.aol.com> X-Originating-IP: [198.7.25.178] Date: Sat, 7 May 2016 05:16:54 -0400 x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1462612615; bh=FOuXrsoVGIosQLXfSWUKjjJog6vgGNchhE0ZFgaC/mw=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=GaGF96jFCTd7CD9/PC+MyY4xSdTH12B32nDt8N2mgg/yggbpH7wMhf7Nc4pi3h0qp osLeXqF+oY/tmGY3DtAbbIEXREdubgMI1B0DqaQh4ZjS4PUORhSwmYksF8Zkd+oftc V6NAswQ0mW64QB6ftMjV6fCKPhfQwEtqDYXzMZw8= x-aol-sid: 3039ac1b0164572db2872eb4 X-Scan-Signature: c95b9a52470b89d54f2ef38e923e05cb Subject: Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz Content-Type: multipart/alternative; boundary="--------MB_8D376585523ABA7_1468_E68BE1_webmail-vm184.sysops.aol.com" 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 Status: O X-Status: X-Keywords: X-UID: 8017 This is a multi-part message in MIME format. ----------MB_8D376585523ABA7_1468_E68BE1_webmail-vm184.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" =20=20=20=20=20Thanks=20Stefan=20for=20the=20frequency=20change=20to=206.48=20kH= z.=20It=20did=20help,=20but=20unfortunately=20the=20level=20of=20QRM=20happened=20= to=C2=A0have=20increased=20dramatically=20since=20Friday=20morning.=20=0D=0A=20=20= =C2=A0=0D=0A=20=20Reviewing=C2=A0stored=20vlf_wide=20captures=20reveals=20that=20= the=20"noise=20strip"=20above=206=20kHz=C2=A0shows=20significant=20long-term=20v= ariability:=C2=A0After=20being=20fairly=20strong=20during=20until=C2=A0April=202= 2=2019:20=20UT,=20there=20was=20a=20relatively=20quiet=20period=C2=A0which=20end= ed=C2=A0suddenly=20May=206,=200:40=20UT.=20I=C2=A0do=20not=20know=20what=20is=20= causing=20these=20variations,=20but=20I=20suspect=20different=20types=20of=20equ= ipment=C2=A0are=20being=20used=20at=20the=20railway=20yard.=C2=A0There=20are=20a= lso=20intense=2033.4=20Hz=20spaced=20lines=20of=20similar=20type=C2=A0around=203= =20kHz.=20Maybe=20we=20should=20all=20lobby=20for=20the=20return=20of=20coal-fir= ed=20steam=20engines,=20which=20were=C2=A0clean=C2=A0(in=20that=20sense)=C2=A0:~= (=C2=A0=C2=A0=0D=0A=20=20=C2=A0=0D=0A=20=20So=C2=A0my=206.48=20kHz=20grabber=20i= s=20currently=20pretty=20useless.=20Stefan=20says=20I=20need=20a=20remote=20rece= iver,=C2=A0say=2020=20km=20from=20here.=20Or=20maybe=20I=20should=20rather=20con= sider=20moving=20to=20a=20different=20QTH?=0D=0A=20=20=C2=A0=0D=0A=20=20All=20th= e=20best,=0D=0A=20=20Markus=20(DF6NM)=0D=0A=20=20=C2=A0=0D=0A=20=20=C2=A0=0D=0A=20= -----Urspr=C3=BCngliche=20Mitteilung-----=20Von:=20Markus=20Vester=20<markusv= ester@aol.com>An:=20rsgb_lf_group=20<rsgb_lf_group@blacksheep.org>Versc= hickt:=20Fr,=206=20Mai=202016=209:26=20amBetreff:=20Re:=20VLF:=20EbNaut=20transm= issions=20on=20lower=20frequencies?,=20pre-tests:=206.47kHz=20=20=20=20=20=20=20= =20=20=20No=20chance=20to=20see=20anything=20on=206470=20Hz=C2=A0here=20due=20=20= to=C2=A0heavy=C2=A0railway=20QRM.=20I=20noticed=20that=20the=20unstable=20lines=C2= =A0seem=20to=20=20be=20concentrated=20on=C2=A0odd=20multiples=20of=2016.70=20Hz.= =C2=A0Going=208=20to=2010=20Hz=20up=20=20(e.g.=20to=206480=20Hz)=20would=20place= =20the=20signal=20in=20a=20QRM=20minimum,=20=20gaining=20at=20least=205=20dB=20o= n=20average.=20=0D=0A=20=20=20=C2=A0=0D=0A=20=20=20All=20the=20best,=0D=0A=20=20= =20Markus=20(DF6NM)=0D=0A=20=20=20=C2=A0=0D=0A=20=20=20=C2=A0=C2=A0=0D=0A=20=20=20= =20=20=0D=0A=20=20=20=20=20From:=20Paul=20Nicholson=20=0D=0A=20=20=20Sent:=20Fri= day,=20May=2006,=202016=202:24=20AM=0D=0A=20=20=20To:=20rsgb_lf_group@blacksheep= .org=20=20=0D=0A=20=20=20Subject:=20Re:=20VLF:=20EbNaut=20transmissions=20on=20l= ower=20frequencies?,=20=20pre-tests:=206.47kHz=0D=0A=20=0D=0A=20=0D=0A=20=20=20=0D= =0A=20Stefan,Your=20200mA=20carrier=20comes=20through=20well=20here=20at=20=206.= 47=20kHz,=20nicesignal=20at=200.14=20fT=20during=20the=20night.=C2=A0=20Daytime=20= is=200.04=20fT=20=20orbelow=20and=20might=20be=20a=20bit=20of=20a=20struggle.I=20= don't=20need=20any=20more=20=20carrier.=C2=A0=20From=20the=20raw=20recording=20I= =20canoptimise=20filters=20and=20blankers=20and=20=20look=20at=20most=20of=20the= =20diurnal.--Paul=20=20Nicholson--=20=20=0D=0A=20=20=0D=0A=20=20=20=0D=0A=20=20=0A= =0A ----------MB_8D376585523ABA7_1468_E68BE1_webmail-vm184.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8" =20=20=0D=0A=20=20=20=0D=0AThanks=20Stefan=20for=20the=20frequency=20change=20to=206.48=20kHz.=20= It=20did=20help,=20but=20unfortunately=20the=20level=20of=20QRM=20happened=20to&= nbsp;have=20increased=20dramatically=20since=20Friday=20morning.=20= =0D=0A=20=20=0D=0A =0D=0A=20=20=0D=0AReviewing stored=20vlf_wide=20captures=20revea= ls=20that=20the=20"noise=20strip"=20above=206=20kHz shows=20significant=20l= ong-term=20variability: After=20being=20fairly=20strong=20during=20until&nb= sp;April=2022=2019:20=20UT,=20there=20was=20a=20relatively=20quiet=20period = ;which=20ended suddenly=20May=206,=200:40=20UT.=20I do=20not=20know=20= what=20is=20causing=20these=20variations,=20but=20I=20suspect=20different=20type= s=20of=20equipment are=20being=20used=20at=20the=20railway=20yard. The= re=20are=20also=20intense=2033.4=20Hz=20spaced=20lines=20of=20similar=20type&nbs= p;around=203=20kHz.=20Maybe=20we=20should=20all=20lobby=20for=20the=20return=20of=20coal-fired=20s= team=20engines,=20which=20were clean (in=20that=20sense) :~( = ; =0D=0A=20=20=0D=0A =0D=0A=20=20=0D=0ASo my=206.48=20kHz=20grabber=20is=20c= urrently=20pretty=20useless.=20Stefan=20says=20I=20need=20a=20remote=20receiver,=  say=2020=20km=20from=20here.=20Or=20maybe=20I=20should=20rather=20consider= =20moving=20to=20a=20different=20QTH?=0D=0A=20=20=0D=0A=  =0D=0A=20=20=0D=0AAll=20the=20best,=0D=0A=20= =20=0D=0AMarkus=20(DF6NM)=0D=0A=20=20=0D=0A =0D=0A=20=20=0D=0A =0D=0A=20-----Urspr=C3=BCngliche=20Mitteilung-----=20Von:=20Markus=20Vester=20<markusvester@aol.com>An:=20rsgb_lf_group=20<rsgb_lf_group@blacksheep.org>V= erschickt:=20Fr,=206=20Mai=202016=209:26=20amBetreff:=20Re:=20= VLF:=20EbNaut=20transmissions=20on=20lower=20frequencies?,=20pre-tests:=206.47kH= z=20=20=0D=0A=20=20=20=20=20=20=0D=0A=20=20=0D=0ANo=20chance=20to=20see=20anything=20on=206470=20Hz here=20due=20=20= to heavy railway=20QRM.=20I=20noticed=20that=20the=20unstable=20lines&= nbsp;seem=20to=20=20be=20concentrated=20on odd=20multiples=20of=2016.70=20H= z. Going=208=20to=2010=20Hz=20up=20=20(e.g.=20to=2064= 80=20Hz)=20would=20place=20the=20signal=20in=20a=20QRM=20minimum,=20=20= gaining=20at=20least=205=20dB=20on=20average.=20=0D=0A=20=20=20=0D=0A= &nbs= p;=0D=0A=20=20=20=0D=0AAll=20the=20best,=0D=0A=20=20=20=0D=0AMarkus=20(DF6NM)<= /div>=0D=0A=20=20=20=0D=0A =0D=0A=20=20=20=0D=0A  =0D=0A=20=20=20= =0D=0A=20=20=0D=0A=0D=0A=20=20=20=0D=0A=20=20=0D=0AFrom:=20Paul=20Nicholson=20=0D= =0A=20=20=20=0D=0ASent:=20Friday,=20May=20= 06,=202016=202:24=20AM=0D=0A=20=20=20=0D=0ATo:=20rsgb_lf_group@blacksheep.org=20=20=0D=0A=20= =20=20=0D=0ASubject:=20Re:=20VLF:=20EbNa= ut=20transmissions=20on=20lower=20frequencies?,=20=20pre-tests:=206.47kHz=0D= =0A=20=0D=0A=20=0D=0A=20=20=20=0D=0A=0D=0A=20Stefan,Your=20200mA=20carrier=20comes=20through=20well=20here=20at=20=206.47=20kHz,=20= nicesignal=20at=200.14=20fT=20during=20the=20night. =20Da= ytime=20is=200.04=20fT=20=20orbelow=20and=20might=20be=20a=20b= it=20of=20a=20struggle.I=20don't=20need=20an= y=20more=20=20carrier. =20From=20the=20raw=20recording=20I=20canoptimise=20filters=20and=20blankers=20and=20=20look=20at=20most=20of=20the= =20diurnal.--Paul=20=20Nic= holson--=20=20=0D=0A= =20=20=0D=0A=20=20=20=0D=0A=20=20 ----------MB_8D376585523ABA7_1468_E68BE1_webmail-vm184.sysops.aol.com--