Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dd06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 1808838000085; Fri, 23 Mar 2012 19:25:40 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SBDqM-00037D-Po for rs_out_1@blacksheep.org; Fri, 23 Mar 2012 23:24:26 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SBDqM-000374-5e for rsgb_lf_group@blacksheep.org; Fri, 23 Mar 2012 23:24:26 +0000 Received: from imr-ma06.mx.aol.com ([64.12.78.142]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1SBDqJ-0004Bi-Ll for rsgb_lf_group@blacksheep.org; Fri, 23 Mar 2012 23:24:26 +0000 Received: from mtaout-mb06.r1000.mx.aol.com (mtaout-mb06.r1000.mx.aol.com [172.29.41.70]) by imr-ma06.mx.aol.com (8.14.1/8.14.1) with ESMTP id q2NNOGnO016612 for ; Fri, 23 Mar 2012 19:24:16 -0400 Received: from White (nrbg-4d057abd.pool.mediaWays.net [77.5.122.189]) by mtaout-mb06.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 2F197E0002AA for ; Fri, 23 Mar 2012 19:24:14 -0400 (EDT) Message-ID: From: "Markus Vester" To: References: <4F6B09A4.9030705@talktalk.net> <52679836C1244DF48CA5B3153203BBC7@acer> <4F6C390F.6050908@talktalk.net> <8712DA76BC9C47AA904F2DCFB205D411@acer> <4F6C57EE.2010508@talktalk.net> <409A0A913F1148C5B8D3D94CCFC59820@Extensa> <4F6CE24F.2080906@talktalk.net> <4F6CF7DE.70800@freenet.de> Date: Sat, 24 Mar 2012 00:24:16 +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=1332545056; bh=UEyrzP7E2eLuscYC0cL53BgU3eD4TbnJryjp04BcM7g=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=fmN/kO2d5C54rVTrxHYMnIiQtO944DWs1AarTh58TyMZtrNPRzpJn9BsLquiEkfQ6 pag1kvjYj/b7MoUJCLcKdS1F2KdqvqdqNsvA+CiPo+PST3CSwQzu3/NcCssjWRTCz5 lzB9oX2a7mYwjZZ1zhdkM4Z4+B4CpjO+v0RFnFIc= X-AOL-SCOLL-SCORE: 0:2:502714496:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: Now using Mini Whip here on 8970 Hz in JO33kh, Appingedam Content-Type: multipart/alternative; boundary="----=_NextPart_000_0016_01CD0954.72A12A40" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,HTML_MESSAGE, 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: 0:2:512909184:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d232.2 ; domain : mx.aol.com DKIM : pass x-aol-sid: 3039ac1d40924f6d06743d75 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_0016_01CD0954.72A12A40 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Peter, as Wolf noted, the French VLF frequencies are a bit variable. Looking at = your wideband VLF, I'd recommend locking to GQD 22.1 kHz, which is = usually very accurate. DHO 23.4 kHz is also strong and stable, but they = have the habit of taking the TX off air during their coffee break = between 7 and 8 UT.=20 Confirming your SID observation at 16:41: GOES 15 x-ray data shows a C4 = solar flare, and the SID is visible on several VLF grabbers, as well as = on our Loran-C monitors. Best of luck, Markus (DF6NM)=20 From: wolf_dl4yhf=20 Sent: Friday, March 23, 2012 11:23 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: Now using Mini Whip here on 8970 Hz in JO33kh, = Appingedam Hi Peter, you could check the calibration later (after the tests on 8.97 kHz) by = temporarily switching the spectrogram's center frequency to 11.904761 = kHz (Russian 'Alpha' on that frequency is currently active). It's not an = ideal check because of the periodic signal -> fence-like spectrum, but = maybe the MSK transmitter on 20.9 kHz is not such an ideal source. = Anyway I will check it with the GPS-disciplined receiver, if FTA is = really 'spot on' frequency.=20 All the best, Wolf DL4YHF . P.S. Suitable GPS receivers (with low jitter on the PPS output) are = quite affordable now. I use a Garmin GPS 18x LVC, which is sensivite = enough to be operated indoors. It used to be available (or still is) at = RS Components and other distributors. The receiver doesn't need to have = a 10 kHz output; a low-jitter PPS output (one pulse per second) is = sufficient to compensate the soundcard's sampling rate continuously, and = provide a very accurate timestamp for other experiments. Am 23.03.2012 23:00, schrieb PA1SDB, Peter:=20 Hi Eddie, I have set that 'Sampling rate detector" in SL. I use 20k9 FTA, the indicator is Green, I have Enabled it. What els have I to do ???? I use that Bandpas filter in the left Black box. 8970 Hz center, 500 Hz width. Spectrum on L2 FTT input size is 524288 Decimal input by is 216 That gives: Effect of FFT settings with fs=3D 48.0000 kHz: Width of one FFT-bin: 423.855 uHz Equiv. noise bandwidth: 635.783 uHz Max freq range: 8.91444 kHz .. 9.02556 kHz FFT window time: 2359.296 s Overlap from scroll interval: 87.5 % I did not callibrate it somehow. On 30 meters / QRSS I use that time = sign on 9996 KHz. I don't know how to callibrate it on VLF. I can't whistler that stable :-)=20 That signal on 8.969,995 has a kund of fading. I hope it's not = something local. Feel free to inform me if I do somnething totaly wrong ! No hard feelings :-) 73's Peter - PA1SDB ----- Original Message -----=20 From: qrss=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Friday, March 23, 2012 8:51 PM Subject: Re: LF: Now using Mini Whip here on 8970 Hz in JO33kh, = Appingedam Peter Very good, how is your calibration? Henny is on 8.97000 you have a = line at 8.96995 if it stops at 23.00 that is when Henny is QRT. 73 Eddie G3ZJO On 23/03/2012 19:59, PA1SDB, Peter wrote:=20 Hello all, Today I did plant the "PA0RDT Mini-Whip" antenna in the backyard = at about 20 meters from the house and 4 meters above ground level. Last 2 week I was using 2 pasive loop antenna's who where = connected direct into the mike input. That wasn't a succes... I hope to see some results soon :-) Take a look at the links below. I did start logging on Friday = evening at about 19:00 UTC, so perhaps I have to adjust contrast later. A page on QSL net http://www.qsl.net/pa1sdb or direct to the = grabber schreen plot http://home.deds.nl/~knol/dream.jpg 73's, Peter - PA1SDB QTH is Appingedam in JO33kh, in the very North- East part of The = Netherlands. ------=_NextPart_000_0016_01CD0954.72A12A40 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Peter,
 
as Wolf noted, the French VLF = frequencies are a bit=20 variable. Looking at your wideband VLF, I'd recommend locking to GQD = 22.1 kHz,=20 which is usually very accurate. DHO 23.4 kHz is also strong and = stable,=20 but they have the habit of taking the TX off air during=20 their coffee break between 7 and 8 UT.
Confirming your SID observation at = 16:41: GOES 15=20 x-ray data shows a C4 solar flare, and the = SID is visible on=20 several VLF grabbers, as well as on our Loran-C = monitors.
 
Best of luck,
Markus (DF6NM) 
 
From: wolf_dl4yhf
Sent: Friday, March 23, 2012 11:23 PM
To: rsgb_lf_group@blacksheep.org= =20
Subject: Re: LF: Now using Mini Whip here on 8970 Hz in = JO33kh,=20 Appingedam

Hi=20 Peter,

you could check the calibration later (after the tests on = 8.97=20 kHz) by temporarily switching the spectrogram's center frequency to = 11.904761=20 kHz (Russian 'Alpha' on that frequency is currently active). It's not an = ideal=20 check because of the periodic signal -> fence-like spectrum, but = maybe the=20 MSK transmitter on 20.9 kHz is not such an ideal source. Anyway I will = check it=20 with the GPS-disciplined receiver, if FTA is really 'spot on' frequency. =

All the best,
   Wolf DL4YHF .

P.S. Suitable = GPS=20 receivers (with low jitter on the PPS output) are quite affordable now. = I use a=20 Garmin GPS 18x LVC, which is sensivite enough to be operated indoors. It = used to=20 be available (or still is) at RS Components and other distributors. The = receiver=20 doesn't need to have a 10 kHz output; a low-jitter PPS output (one pulse = per=20 second) is sufficient to compensate the soundcard's sampling rate = continuously,=20 and provide a very accurate timestamp for other = experiments.


Am=20 23.03.2012 23:00, schrieb PA1SDB, Peter:=20
Hi Eddie,
I have set that 'Sampling rate detector" in=20 SL.
I use 20k9 FTA, the indicator is Green, I=20 have Enabled it.
What els have I to do ????
 
I use that Bandpas filter in the left Black=20 box.
8970 Hz center, 500 Hz width.
Spectrum on L2
 
FTT input size is 524288
Decimal input by is 216
 
That gives:
 
Effect of FFT settings with fs=3D 48.0000 = kHz:
Width=20 of one FFT-bin: 423.855 uHz
Equiv. noise bandwidth: 635.783 = uHz
Max freq=20 range: 8.91444 kHz .. 9.02556 kHz
FFT window time: 2359.296 = s
Overlap=20 from scroll interval: 87.5 %
I did not callibrate it somehow. On 30 = meters=20 / QRSS I use that time sign on 9996 KHz. I don't know how to = callibrate it on VLF.
I can't whistler that = stable :-) 
 
That signal on 8.969,995 has a kund of = fading. I hope=20 it's not something local.
 
Feel free to inform me if I do somnething = totaly wrong=20 !
No hard feelings :-)
 
 
73's Peter - PA1SDB
 
 
 
----- Original Message -----
From:=20 qrss
To: rsgb_lf_group@blacksheep.org
Sent: Friday, March 23, 2012 = 8:51=20 PM
Subject: Re: LF: Now using = Mini Whip=20 here on 8970 Hz in JO33kh, Appingedam

Peter

Very good, how is your calibration? = Henny is on=20 8.97000 you have a line at 8.96995 if it stops at 23.00 that is when = Henny=20 is QRT.

73 Eddie G3ZJO


On 23/03/2012 19:59, = PA1SDB, Peter=20 wrote:=20
Hello all,
Today I did plant the "PA0RDT Mini-Whip" = antenna=20 in the backyard at about 20 meters from the house and 4 meters = above=20 ground level.
 
Last 2 week I was using 2 pasive loop = antenna's=20 who where connected direct into the mike input.
That wasn't = a succes...
 
I hope to see some results soon=20 :-)
 
Take a look at the links below. I=20 did start logging on Friday evening at about 19:00 = UTC, so=20 perhaps I have to adjust contrast later.
A page on QSL net http://www.qsl.net/pa1sdb  or = direct to=20 the grabber schreen plot http://home.deds.nl/~knol/dream.jpg
 
73's, Peter - PA1SDB
 
QTH is Appingedam in JO33kh, in the very = North-=20 East part of The=20 Netherlands.


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