Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dl04.r1000.mx.aol.com (Internet Inbound) with ESMTP id EC2F1380000B6; Sat, 26 Nov 2011 15:38:27 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RUP0I-0000rm-UO for rs_out_1@blacksheep.org; Sat, 26 Nov 2011 20:37:42 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RUP0I-0000rd-C5 for rsgb_lf_group@blacksheep.org; Sat, 26 Nov 2011 20:37:42 +0000 Received: from imr-ma01.mx.aol.com ([64.12.206.39]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RUP0G-0005cu-JV for rsgb_lf_group@blacksheep.org; Sat, 26 Nov 2011 20:37:42 +0000 Received: from mtaout-da03.r1000.mx.aol.com (mtaout-da03.r1000.mx.aol.com [172.29.51.131]) by imr-ma01.mx.aol.com (8.14.1/8.14.1) with ESMTP id pAQKbXQ9014635; Sat, 26 Nov 2011 15:37:33 -0500 Received: from White (nrbg-4d05742b.pool.mediaWays.net [77.5.116.43]) by mtaout-da03.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 9E52AE0000D5; Sat, 26 Nov 2011 15:37:29 -0500 (EST) Message-ID: From: "Markus Vester" To: Cc: "Paul" , "Mike Smith" References: <4ED149CA.2020601@iup.uni-heidelberg.de> Date: Sat, 26 Nov 2011 21:36:55 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 12.0.1606 X-MimeOLE: Produced By Microsoft MimeOLE V12.0.1606 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20110426; t=1322339853; bh=o+kFgAdbFDZVZk0x8Ir7SIZoMolbkWRkpXZOTKMruZo=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=CDwJbWanh19S9dluZEpsgtSGuibC/onVfGGouQG4lz6sKYZ+xXDBP1+6Gz7ldqvi1 TDe6hucG5v0zwJq09j4Vq2zKxPAd6SdCR5wwg2FWWRPigd7i348ctTc7mXS8Utq9Eq DoKX2NR1h2+KuU2tlrFzZGSNuEfd0uZ46bkXczeo= X-AOL-SCOLL-SCORE: 0:2:375118688:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-Spam-Score: 0.1 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,HTML_TAG_EXIST_TBODY=0.126 Subject: Re: LF: TA detection of a ham generated 8970 Hz signal? Content-Type: multipart/alternative; boundary="----=_NextPart_000_001D_01CCAC83.84B528E0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.7 required=5.0 tests=HTML_20_30,HTML_MESSAGE, HTML_TAG_EXISTS_TBODY,MISSING_OUTLOOK_NAME 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: 0:2:385463424:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d023.1 ; domain : mx.aol.com DKIM : pass x-aol-sid: 3039ac1d4ad24ed14e437b39 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Dies ist eine mehrteilige Nachricht im MIME-Format. ------=_NextPart_000_001D_01CCAC83.84B528E0 Content-Type: text/plain; charset="ISO-8859-2" Content-Transfer-Encoding: quoted-printable Paul, Mike, Stefan, whatever result may come out tonight, this is truly excellent work! Hats = off! Best wishes, Markus (DF6NM) From: Stefan Sch=E4fer=20 Sent: Saturday, November 26, 2011 9:19 PM To: rsgb_lf_group@blacksheep.org=20 Subject: LF: TA detection of a ham generated 8970 Hz signal? VLF,=20 The mails are coming in quickly now.=20 Some background: Paul Nichsolson (well known at least from the last = years VLF tests) has probably the most sensitive RX antenna on VLF in = the UK. He works a lot with PC analysis of weak VLF signals. A few weeks = ago he informed me that there is a Mike Smith in USA who has an E field = receiver for VLF and set up Paul's software for analysis. They are = always recording the VLF data to a HDD to have the chance to re-process = it later and add some special filters and so on. Also they distribute = their data stream via the net and so Paul can analyse the the signal = from Mike at home in UK. In this test they try to pick my signal out of the noise over a = transatlantic distance, with further statistic data (proofing that this = signal is not by accident (or guesswork ;-) ). It will neither be a = "message" nor a spectrogram but just a peak coming out of the noise on = EXACT the frequency (+- 1 uHz or so). Quite exciting what they seem to = work out right now. If this test will be successful and we will have = that peak, then we will have some further informations on how many dBs = are missed to transmit a short message, like "K" or so, which comes a = bit closer to the usual work done by hams ;-) I will forward surther informations about Mikes locator and further = deteils of his RX system if i will get some... Attached you'll find the latest mail and information status. 73, Stefan/DK7FC -------- Original-Nachricht -------- Betreff: Re: VLF: 8970 Hz = transmissions, soon again here=20 Datum: Sat, 26 Nov 2011 19:28:44 +0000=20 Von: Paul =20 An: Mike Smith =20 CC: Stefan Sch=E4fer , Markus = Vester =20 Mike, Attached spectrum for first 2 hours of Stefan's transmission. 8970 peak now at about 4 sigma. That peak is not there before 17:00. I am analysing the signal recorded from the coherent stream vlf27f here via vtvorbis and vtwrite to my local disk. Don't want to run this on your vlf01 host as it will hammer the disk and risk upsetting vttime. We haven't tested that yet! All the CPU fans on both my quad core machines are full on as I work through the data... There are at least 6 computers involved in this test, not counting Stefan's SpecLab PC. Timestamped signal streams are crossing back and forth all over the place... fingers crossed it all holds up... Have to check now to make sure your 8970 peak is not some cross-talk between the two channels of the coherent pair vlf27f ...later a scan of your local raw timed data will eliminate that possibility for sure. But for now I can check the relative phase between the two channels, we should see variation... -- Paul Nicholson -- ------=_NextPart_000_001D_01CCAC83.84B528E0 Content-Type: text/html; charset="ISO-8859-2" Content-Transfer-Encoding: quoted-printable
Paul, Mike, Stefan,
 
whatever result may come out tonight, = this is truly=20 excellent work! Hats off!
 
Best wishes,
 
Markus (DF6NM)
 

From: Stefan = Sch=E4fer
Sent: Saturday, November 26, 2011 9:19 PM
Subject: LF: TA detection of a ham generated 8970 Hz=20 signal?

VLF,

The mails are coming in quickly = now.=20
Some background: Paul Nichsolson (well known at least from the last = years=20 VLF tests) has probably the most sensitive RX antenna on VLF in the UK. = He works=20 a lot with PC analysis of weak VLF signals. A few weeks ago he informed = me that=20 there is a Mike Smith in USA who has an E field receiver for VLF and set = up=20 Paul's software for analysis. They are always recording the VLF data to = a HDD to=20 have the chance to re-process it later and add some special filters and = so on.=20 Also they distribute their data stream via the net and so Paul can = analyse the=20 the signal from Mike at home in UK.

In this test they try to pick = my=20 signal out of the noise over a transatlantic distance, with further = statistic=20 data (proofing that this signal is not by accident (or guesswork ;-) ). = It will=20 neither be a "message" nor a spectrogram but just a peak coming out of = the noise=20 on EXACT the frequency (+- 1 uHz or so). Quite exciting what they seem = to work=20 out right now. If this test will be successful and we will have that = peak, then=20 we will have some further informations on how many dBs are missed to = transmit a=20 short message, like "K" or so, which comes a bit closer to the usual = work done=20 by hams ;-)

I will forward surther informations about Mikes = locator and=20 further deteils of his RX system if i will get some...

Attached = you'll=20 find the latest mail and information status.

73,=20 Stefan/DK7FC

-------- Original-Nachricht --------=20
Betreff: Re: VLF: 8970 Hz transmissions, soon again here
Datum: Sat, 26 Nov 2011 19:28:44 +0000
Von: Paul <paul@abelian.netcom.co.uk&g= t;
An: Mike Smith <michael.smith20@gmail.com&g= t;
CC: Stefan Sch=E4fer <schaefer@iup.uni-heide= lberg.de>,=20 Markus Vester <markusvester@aol.com>


Mike,

Attached spectrum for first 2 hours of Stefan's transmission.
8970 peak now at about 4 sigma.

That peak is not there before 17:00.

I am analysing the signal recorded from the coherent stream
vlf27f here via vtvorbis and vtwrite to my local disk.
Don't want to run this on your vlf01 host as it will hammer
the disk and risk upsetting vttime.  We haven't tested that yet!

All the CPU fans on both my quad core machines are full on as
I work through the data...

There are at least 6 computers involved in this test, not
counting Stefan's SpecLab PC.  Timestamped signal streams are
crossing back and forth all over the place... fingers crossed
it all holds up...

Have to check now to make sure your 8970 peak is not some
cross-talk between the two channels of the coherent pair vlf27f
...later a scan of your local raw timed data will eliminate that
possibility for sure.   But for now I can check the relative
phase between the two channels, we should see variation...

--
Paul Nicholson
--
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