Return-Path: Received: from mtain-di12.r1000.mx.aol.com (mtain-di12.r1000.mx.aol.com [172.29.64.16]) by air-dc07.mail.aol.com (v129.4) with ESMTP id MAILINDC074-86a54cac511d354; Wed, 06 Oct 2010 06:36:13 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-di12.r1000.mx.aol.com (Internet Inbound) with ESMTP id 51EAF380004C5; Wed, 6 Oct 2010 06:36:11 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1P3RKX-00049l-3y for rs_out_1@blacksheep.org; Wed, 06 Oct 2010 11:34:37 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1P3RKW-00049c-FV for rsgb_lf_group@blacksheep.org; Wed, 06 Oct 2010 11:34:36 +0100 Received: from n6-vm0.bullet.mail.gq1.yahoo.com ([98.137.26.79]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1P3RKS-0006hd-HK for rsgb_lf_group@blacksheep.org; Wed, 06 Oct 2010 11:34:36 +0100 Received: from [98.137.27.132] by n6.bullet.mail.gq1.yahoo.com with NNFMP; 06 Oct 2010 10:34:24 -0000 Received: from [67.195.9.106] by t4.bullet.mail.gq1.yahoo.com with NNFMP; 06 Oct 2010 10:34:24 -0000 Received: from [127.0.0.1] by omp110.mail.gq1.yahoo.com with NNFMP; 06 Oct 2010 10:34:24 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 696227.22176.bm@omp110.mail.gq1.yahoo.com Received: (qmail 87745 invoked by uid 60001); 6 Oct 2010 10:34:24 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1286361264; bh=JX/2FzdkFn7ZkhD1F2jmYsCeyf4oqAL2+bPnZsVLTMo=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=kHAf8XMsNYoNEyY8GcfKK5tLx563CfYHgK5PDCJnOvcgcHN0/am8y8bP6yvcHZAiGdrWuRfgnkFJHRmX4c/OW4KU3t66kzYujIj/+/3kfwpeCx7K3IzALX0zdksJK+tDKZYXIKMJcO8FfZl4VHIKisajDVxIxkyekwbNx4t3zL4= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=6HmugHB9MJdAqQlmbM3Ki36xwkz/7vm+jcUsEBY/oxJDZP5Xs+0ZqfGBlVmMxg5uoOP01WkTuh1cW/8kXYq7MyWHLN0UI1qryc+U+0ZJt434NAUoJarewmHu75iiN+yyx2YqLv5dcHNf+pTsZ8wNBh35/Nt1yqJOHCvmHLUr5cc=; Message-ID: <542293.62374.qm@web111917.mail.gq1.yahoo.com> X-YMail-OSG: qVLjQAcVM1m6tIC6ucfXHa12tKqKiNDcdrqZCEE15MWIIE6 mjP8VR3eeTYOqkG7t8TH8kUNPyENHLNvfu9u3RqY98pmqnmWPOUIh_5I_5u. _Kps83pZt3UJ.XnxmD8x231OB_gavyqVcfzvzNu0AHfrdKCutAlnfkXa1Uaj rql3gmHILoHxRPzCMVCzk7vR4eYEYZdFHsFS40lyLXxgbAQx837to8bKP5cv DXOiV0mt5Ripd65T25Q_PxlvJTD.qsqscYa7Zerf_hEgId0l5.KdIRzrqFAK o5Xkbc35943PJP7A- Received: from [151.99.187.181] by web111917.mail.gq1.yahoo.com via HTTP; Wed, 06 Oct 2010 03:34:24 PDT X-Mailer: YahooMailRC/497 YahooMailWebService/0.8.105.279950 References: <4CA9BDE0.4000601@iup.uni-heidelberg.de> <646839.20132.qm@web111910.mail.gq1.yahoo.com> <4CAA4521.6070301@iup.uni-heidelberg.de> <242345.444.qm@web111918.mail.gq1.yahoo.com> <26222.79702.qm@web111904.mail.gq1.yahoo.com> <4CAB6270.1090007@iup.uni-heidelberg.de> <858745.97136.qm@web111905.mail.gq1.yahoo.com> <4CAC3241.9060800@iup.uni-heidelberg.de> Date: Wed, 6 Oct 2010 03:34:24 -0700 (PDT) From: Daniele Tincani To: rsgb_lf_group@blacksheep.org In-Reply-To: <4CAC3241.9060800@iup.uni-heidelberg.de> MIME-Version: 1.0 DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: VLF: Inspire VLF-3 receiver Content-Type: multipart/alternative; boundary="0-1210738899-1286361264=:62374" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=1.0 required=5.0 tests=FORGED_YAHOO_RCVD,HTML_20_30, 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-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d288.1 ; domain : yahoo.com DKIM : pass x-aol-sid: 3039ac1d40104cac511a6acb X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --0-1210738899-1286361264=:62374 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable OK, I will adjust both the spectrum scale and the B slider so that even=A0= -120dB=20 are visible on the waterfall. The C slider will be kept untouched. I will record 10 seconds this evening. Also I=A0think I will be available= =A0for a=20 long-term observation (over 12 hours or so) next saturday. I don't want to annoy you and the LF/VLF group with all these detailed=20 questions, anyway I noticed that bits/sample is set to 16, while my soundc= ard=20 perform much better of course at 24 bits/sample. Must the 16 bits/sample= =A0setting=20 be retained the for long-term observation? Regards Daniele ________________________________ From: Stefan Sch=E4fer To: rsgb_lf_group@blacksheep.org Sent: Wed, October 6, 2010 10:24:33 AM Subject: Re: VLF: Inspire VLF-3 receiver Hi Daniele, Yes, adjust the B slider. But the QRM/QRN must be totally visible on all= =20 frequencies. You can increase the input level but it's better to leave it= as you=20 usually have it. It is better to change the range of the visible spectrum,= so=20 click: options =3D> audio settings =3D> ..(2) =3D> increase the lower rang= e to -120 dB=20 if necessary. It's good to cover 60...80 dB totally so make the same chang= es on=20 the other side, means if you have -80...-20 dB, go to -120...-60 dB.=20 Additionally you can adjust the B slider. Or you may record a wav file and send it to me. Just click: file =3D> audi= o files=20 =3D> save input as audio file =3D> (choose a directory and save about 10= seconds).=20 Otherwise the size becomes to big. ;-) 73, Stefan Am 06.10.2010 00:53, schrieb Daniele Tincani:=20 Hi Stefan, > >> Adjust the color scale if necessary but don't change the 'C' (contrast)= =20 >slider. > >Do you mean I can adjust the Brightness control too? Or simply select a= =20 >different palette? >I'm testing the .usr and it results almost in a blank screen (apart from= lower=20 >frequencies) because of the fact that strongest signals I see (for exampl= e RDL=20 >on 18100Hz) are all below -80dB, with an overall noise floor around -110d= B. In=20 >order to=A0have some pixels emerging from the dark, I=A0have to increase= the=20 >brightness of the waterfall. Is it OK? >Otherwise, I could increase significantly the line input gain in Windows.= What=20 >is the preferred method? > >Regards >Daniele > > > > > ________________________________ From: Stefan Sch=E4fer >To: rsgb_lf_group@blacksheep.org >Sent: Tue, October 5, 2010 7:37:52 PM >Subject: Re: VLF: Inspire VLF-3 receiver > >Hi Daniele, > >Am 05.10.2010 17:00, schrieb Daniele Tincani:=20 > >> >>My reasoning is: I'm pretty sure :-) that I have hum at home affecting= reception=20 >>below 10KHz. >> >> Attached you find an usr file. Just let it run for some hours, maybe so th= at the=20 QRN minimum (in Gramany and Italy arround 8...10 UTC) is visible. Than tak= e a=20 capture maybe at arround 17 UTC and show it here. Adjust the color scale= if=20 necessary but don't change the 'C' (contrast) slider. We will see your QRN/QRM situation and how strong the Alphas are and and= and...=20 Don't turn the antenna during the recording ;-)=20 Later (or before) you can check different antenna angles and check for min= imum=20 QRM. You can switch on/off everything that may cause QRM in your house. An= d you=20 can try to find a quiter location... 73, Stefan > =20 --0-1210738899-1286361264=:62374 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
OK, I will adjust both the spectrum scale and the B slider so= that even -120dB are visible on the waterfall. The C slider will be= kept untouched.
I will record 10 seconds this evening. Also I think I will be av= ailable for a long-term observation (over 12 hours or so) next saturd= ay.
 
I don't want to annoy you and the LF/VLF group with all these detaile= d questions, anyway I noticed that bits/sample is set to 16, while my soun= dcard perform much better of course at 24 bits/sample. Must the 16 bits/sa= mple setting be retained the for long-term observation?
Regards
Daniele
=
From: Stefan Sch=E4fer <= ;Stefan.Schaefer@iup.uni-heidelberg.de>
To: rsgb_lf_group@blacksheep.org
Sent: Wed, October 6, 2010 10:24:33 AM
Subject: Re: VLF: Inspire VL= F-3 receiver

Hi Daniele,
Yes, adjust the B slider. But the QRM/QRN must be totally visible on all= frequencies. You can increase the input level but it's better to leave it= as you usually have it. It is better to change the range of the visible= spectrum, so click: options =3D> audio settings =3D> ..(2) =3D>= increase the lower range to -120 dB if necessary. It's good to cover 60..= .80 dB totally so make the same changes on the other side, means if you ha= ve -80...-20 dB, go to -120...-60 dB. Additionally you can adjust the B sl= ider.

Or you may record a wav file and send it to me. Just click:= file =3D> audio files =3D> save input as audio file =3D> (choose= a directory and save about 10 seconds). Otherwise the size becomes to big= . ;-)

73, Stefan



Am 06.10.2010 00:53, schrieb Daniel= e Tincani:=20
Hi Stefan,
 
> Adjust the color scale if necessary but don't change the 'C' (co= ntrast) slider.
 
Do you mean I can adjust the Brightness control too? Or simply select= a different palette?
I'm testing the .usr and it results almost in a blank screen (apart= from lower frequencies) because of the fact that strongest signals I see= (for example RDL on 18100Hz) are all below -80dB, with an overall noise= floor around -110dB. In order to have some pixels emerging from the= dark, I have to increase the brightness of the waterfall. Is it OK?<= /DIV>
Otherwise, I could increase significantly the line input gain in Wind= ows. What is the preferred method?
 
Regards
Daniele

=
From: Stefan Sch=E4fer <Stefan.Schaefer@iup.uni-heidelberg.de>=
To: rsgb_l= f_group@blacksheep.org
Sent: Tue, October 5, 2010 7:37:52 PM
Subject: Re: VLF: Inspire VLF-3 receiver

= Hi Daniele,

Am 05.10.2010 17:00, schrieb Daniele Tincani:=20
=
My reasoning is: I'm pretty sure :-) that I have hum at home affectin= g reception below 10KHz.


Attached you= find an usr file. Just let it run for some hours, maybe so that the QRN= minimum (in Gramany and Italy arround 8...10 UTC) is visible. Than take= a capture maybe at arround 17 UTC and show it here. Adjust the color scal= e if necessary but don't change the 'C' (contrast) slider.

We will= see your QRN/QRM situation and how strong the Alphas are and and and...= Don't turn the antenna during the recording ;-)

Later (or before)= you can check different antenna angles and check for minimum QRM. You can= switch on/off everything that may cause QRM in your house. And you can tr= y to find a quiter location...

73, Stefan

=
<= br> --0-1210738899-1286361264=:62374--