Return-Path: Received: from mtain-dk02.r1000.mx.aol.com (mtain-dk02.r1000.mx.aol.com [172.29.180.6]) by air-ma08.mail.aol.com (v129.4) with ESMTP id MAILINMA081-b5304d7922113ab; Thu, 10 Mar 2011 14:10:09 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dk02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 77F5F38000226; Thu, 10 Mar 2011 14:09:57 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PxlDz-0007rt-1r for rs_out_1@blacksheep.org; Thu, 10 Mar 2011 19:08:39 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PxlDy-0007rk-HG for rsgb_lf_group@blacksheep.org; Thu, 10 Mar 2011 19:08:38 +0000 Received: from relay.uni-heidelberg.de ([129.206.100.212]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PxlDx-0007Vq-JG for rsgb_lf_group@blacksheep.org; Thu, 10 Mar 2011 19:08:38 +0000 Received: from ix.urz.uni-heidelberg.de (cyrus-portal.urz.uni-heidelberg.de [129.206.100.176]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id p2AJ8Zaw022506 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 10 Mar 2011 20:08:36 +0100 Received: from extmail.urz.uni-heidelberg.de (extmail.urz.uni-heidelberg.de [129.206.100.140]) by ix.urz.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id p2AJ8ZwV002920 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 10 Mar 2011 20:08:35 +0100 Received: from [147.142.8.69] (vpn508-069.rzuser.uni-heidelberg.de [147.142.8.69]) by extmail.urz.uni-heidelberg.de (8.13.4/8.13.1) with ESMTP id p2AJ8Y5i017690 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 10 Mar 2011 20:08:35 +0100 Message-ID: <4D7921C1.2090503@iup.uni-heidelberg.de> Date: Thu, 10 Mar 2011 20:08:49 +0100 From: =?windows-1252?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.11) Gecko/20100711 Thunderbird/3.0.6 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <520894233e2f4e6e9b7934761a24682d@kabelmail.de> In-Reply-To: <520894233e2f4e6e9b7934761a24682d@kabelmail.de> X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,RATWARE_GECKO_BUILD=1.426 Subject: Re: LF: GRABBER Content-Type: multipart/alternative; boundary="------------050404060701010106010001" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,HTML_MESSAGE 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-sid: 3039ac1db4064d79220213fd X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : temperror X-Mailer: Unknown (No Version) --------------050404060701010106010001 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Thank you Uwe, OK, Paul says "Average frequency 8970.022189 Hz +/- 3uHz". This confirms very well what i am seeing here. I wish he could receive Hennys signal as well. 73, Stefan Am 10.03.2011 16:24, schrieb uwe-jannsen@kabelmail.de: > > Hi Stefan, hi Henny, > > Stefan, part of your question has been answered by Paul Nichelson. > pse see: > > http://tech.groups.yahoo.com/group/VLF_Group/message/17456 > > the reference is a GPS diciplined 10MHz signal. > > no divider in use. the accurate sine wave is generated by the high > speed microcontroller AT90S2313followed by a R matrixc and a lowpass > filter cutqrg 10kHz. > > the phase is GPS sychronized. the time is locked to GPS 1pps. > > negative: the resolution (step size) is 0,3mHz (32-bit). > theoretically. really: 63xmHz. the eeprom doesnt take any notice of > the last two signs of the HEX group. so it can generate near > 8970,000Hz: 8970,022xHz or 8969,959xHz. > > best regards > > Uwe/dj8wx > > > > > ------------------------------------------------------------------------ > Von: rsgb_lf_group@blacksheep.org > Gesendet: 10.03.2011 13:42 > An: rsgb_lf_group@blacksheep.org > Betreff: Re: LF: GRABBER > ------------------------------------------------------------------------ > > Hello Henny, Uwe, VLF, > > Ah, you've already seen it ;-) > I just wanted to post that i have splitted my 60000 window. Now the > range arround 8970.000 +- 4 uHz and 8970.020...8970.025 is visible. > Since it has stored the last 10 days or so in the buffer, DJ8WX's > transmission of last week is now visible in 47 uHz as well. > > Uwe, what is the exact frequency on which you are transmitting? What > is the original reference frequency and what is the divider ratio? > > May there be a conflict with Hennys transmission? Now we are in a > range where it is important to know the frequency to a uHz! If i look > at Victor's spectrogram, it looks Henny is slightly below 8970.022 Hz, > maybe 0.2 mHz. But this may be not enough to make out the difference > (?) Oh, i just looked at the spectrogram and see a faint trace at > 8970.0217 Hz. Is it you, Henny? It's still to much guesswork but a > first step on the way to a proper ID. 3 dB QRO would be a good way to > check that :-) > > > > 73, Stefan/DK7FC > > > Am 10.03.2011 13:11, schrieb henny van elst: >> Hi Stefan, >> tu for the 60000grabber, >> i will keep the tx on, >> henny pa3cpm >> best 73's to All. --------------050404060701010106010001 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay.uni-heidelberg.de id p2AJ8Zaw022506 Thank you Uwe,

OK, Paul says "Average frequency 8970.022189 Hz +/- 3uHz". This confirms very well what i am seeing here.

I wish he could receive Hennys signal as well.

73, Stefan

Am 10.03.2011 16:24, schrieb uwe-jannsen@kabelmail.de:

Hi Stefan, hi Henny,

Stefan, part of your question has been answered by Paul Nichelson.
pse see:

http://tech.groups.y= ahoo.com/group/VLF_Group/message/17456

the reference is a GPS diciplined 10MHz signal.

no divider in use. the accurate sine wave is generated by the high speed microcontroller AT90S2313followed by a R matrixc and a =A0lowpass filter cutqrg 10kHz.

the phase is GPS sychronized. the time is locked to GPS 1pps.

negative: the resolution (step size) is 0,3mHz (32-bit). theoretically. really: 63xmHz. the eeprom doesnt take any notice of the last two signs of the HEX group.=A0so it can generate near 8970,000Hz: =A08970,022xHz or 8969,959xHz.

best regards

Uwe/dj8wx<= /p>


Von: rsgb_lf_group@blacksheep.org
Gesendet: 10.03.2011 13:42
An: rsgb_lf_group@blacksheep.org
Betreff: Re: LF: GRABBER

Hello Henny, Uwe, VLF,

Ah, you've already seen it ;-)
I just wanted to post that i have splitted my 60000 window. Now the range arround 8970.000 +- 4 uHz and 8970.020...8970.025 is visible.
Since it has stored the last 10 days or so in the buffer, DJ8WX's transmission of last week is now visible in 47 uHz as well.

Uwe, what is the exact frequency on which you are transmitting? What is the original reference frequency and what is the divider ratio?

May there be a conflict with Hennys transmission? Now we are in a range where it is important to know the frequency to a uHz! If i look at Victor's spectrogram, it looks Henny is slightly below 8970.022 Hz, maybe 0.2 mHz. But this may be not enough to make out the difference (?) Oh, i just looked at the spectrogram and see a faint trace at 8970.0217 Hz. Is it you, Henny? It's still to much guesswork but a first step on the way to a proper ID. 3 dB QRO would be a good way to check that :-)



73, Stefan/DK7FC


Am 10.03.2011 13:11, schrieb henny van elst:
Hi Stefan,
=A0
tu for the 60000grabber,
i will keep the tx on,
henny pa3cpm=
best 73's to All.
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