Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-df04.r1000.mx.aol.com (Internet Inbound) with ESMTP id DE395380000AC; Fri, 23 Mar 2012 19:40:33 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SBE56-0003F1-Ap for rs_out_1@blacksheep.org; Fri, 23 Mar 2012 23:39:40 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SBE55-0003Es-K8 for rsgb_lf_group@blacksheep.org; Fri, 23 Mar 2012 23:39:39 +0000 Received: from cpsmtpb-ews02.kpnxchange.com ([213.75.39.5]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1SBE54-0004Gg-3O for rsgb_lf_group@blacksheep.org; Fri, 23 Mar 2012 23:39:39 +0000 Received: from cpsps-ews14.kpnxchange.com ([10.94.84.181]) by cpsmtpb-ews02.kpnxchange.com with Microsoft SMTPSVC(6.0.3790.4675); Sat, 24 Mar 2012 00:39:31 +0100 Received: from CPSMTPM-TLF101.kpnxchange.com ([195.121.3.4]) by cpsps-ews14.kpnxchange.com with Microsoft SMTPSVC(7.5.7601.17514); Sat, 24 Mar 2012 00:39:31 +0100 Received: from Extensa ([195.241.183.120]) by CPSMTPM-TLF101.kpnxchange.com with Microsoft SMTPSVC(7.5.7601.17514); Sat, 24 Mar 2012 00:39:25 +0100 Message-ID: From: "PA1SDB, Peter" 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> In-Reply-To: Date: Fri, 23 Mar 2012 23:39:24 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6001.18416 X-MIMEOLE: Produced By Microsoft MimeOLE V6.0.6001.18645 X-OriginalArrivalTime: 23 Mar 2012 23:39:25.0461 (UTC) FILETIME=[2E6D0C50:01CD094E] X-RcptDomain: blacksheep.org 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_00DE_01CD094E.2DCAFFF0" 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: 0:2:505249024:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40d84f6d09f13bb9 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_00DE_01CD094E.2DCAFFF0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Hi Hi. I started listening on VLF because I did build a SID detector. http://home.deds.nl/~knol/blog.htm Allmost at the same time like Andy, G7IZU at http://www.tvcomm.co.uk/radio/vlf.html Later on we meet. We learned about programming SL. as a SID detector. In advice of you, I will QSY to GQD on 22.1. Its also strong here as you can see in the spectrum overview here: http://home.deds.nl/~knol/sid.jpg I wonder is SID's does have effect on 9 Khz signals. Does sunset and sunruse have also effect on 9 Khz signals like it has ons the signals between 19 and 24 Khz ? Learning day by day ! 73's Peter - PA1SDB' ----- Original Message ----- From: Markus Vester To: rsgb_lf_group@blacksheep.org Sent: Friday, March 23, 2012 11:24 PM Subject: Re: LF: Now using Mini Whip here on 8970 Hz in JO33kh, Appingedam 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. 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) From: wolf_dl4yhf Sent: Friday, March 23, 2012 11:23 PM To: rsgb_lf_group@blacksheep.org 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. 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: 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= 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 :-) 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 ----- From: qrss To: rsgb_lf_group@blacksheep.org 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: 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_00DE_01CD094E.2DCAFFF0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi Hi.
I started listening on VLF because I did build = a SID=20 detector.
http://home.deds.nl/~knol/blo= g.htm
 
Allmost at the same time like Andy, = G7IZU at http://www.tvcomm.co.uk/r= adio/vlf.html
Later on we meet. We learned about = programming  SL.=20 as a SID detector.
 
In advice of you, I will QSY to GQD on 22.1. = Its also=20 strong here as you can see in the spectrum overview here:
http://home.deds.nl/~knol/sid.= jpg
 
 
I wonder is SID's does have effect on 9 Khz=20 signals.
Does sunset and sunruse have also effect on 9 = Khz=20 signals like it has ons the signals between 19 and 24 Khz ?
 
Learning day by day !
 
73's Peter - PA1SDB'
 
 
 
 
 
 
----- Original Message -----
From:=20 Markus=20 Vester
Sent: Friday, March 23, 2012 = 11:24=20 PM
Subject: Re: LF: Now using Mini = Whip here=20 on 8970 Hz in JO33kh, Appingedam

Peter,
 
as Wolf noted, the French VLF = frequencies are a=20 bit variable. Looking at your wideband VLF, I'd recommend locking to = GQD 22.1=20 kHz, which is usually very accurate. DHO 23.4 kHz is also strong = and=20 stable, 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=20 on several VLF grabbers, as well as on our Loran-C=20 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 Peter,

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

All the=20 best,
   Wolf DL4YHF .

P.S. Suitable GPS receivers = (with=20 low jitter on the PPS output) are quite affordable now. I use a Garmin = GPS 18x=20 LVC, which is sensivite enough to be operated indoors. It used to be = available=20 (or still is) at RS Components and other distributors. The receiver = doesn't=20 need to have a 10 kHz output; a low-jitter PPS output (one pulse per = second)=20 is sufficient to compensate the soundcard's sampling rate = continuously, and=20 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=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=20 kHz:
Width of one FFT-bin: 423.855 uHz
Equiv. noise bandwidth: = 635.783=20 uHz
Max freq range: 8.91444 kHz .. 9.02556 kHz
FFT window = time:=20 2359.296 s
Overlap 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=20 callibrate it on VLF.
I can't whistler that=20 stable :-) 
 
That signal on 8.969,995 has a kund of = fading. I=20 hope it's not something local.
 
Feel free to inform me if I do somnething = totaly=20 wrong !
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=20 on 8.97000 you have a line at 8.96995 if it stops at 23.00 that is = when=20 Henny is QRT.

73 Eddie G3ZJO


On 23/03/2012 = 19:59,=20 PA1SDB, Peter 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 = did start logging on Friday evening at = about 19:00 UTC,=20 so 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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