Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 55B8C380000BA; Tue, 27 Mar 2012 14:27:53 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SCb5d-0008Tv-KV for rs_out_1@blacksheep.org; Tue, 27 Mar 2012 19:25:53 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SCb5d-0008Tm-3o for rsgb_lf_group@blacksheep.org; Tue, 27 Mar 2012 19:25:53 +0100 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1SCb5b-0005Cn-35 for rsgb_lf_group@blacksheep.org; Tue, 27 Mar 2012 19:25:53 +0100 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id q2RIPgkQ026097 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 27 Mar 2012 20:25:46 +0200 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id q2RIPfE8008863 for ; Tue, 27 Mar 2012 20:25:41 +0200 Message-ID: <4F72060D.4080305@iup.uni-heidelberg.de> Date: Tue, 27 Mar 2012 20:25:17 +0200 From: =?UTF-8?B?U3RlZmFuIFNjaMOkZmVy?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <4F6F7394.000017.01436@BOB-PC> In-Reply-To: X-Spam-Score: 3.0 (+++) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,HTML_TAG_EXIST_TBODY=0.126,HTML_TINY_FONT=1.425,RATWARE_GECKO_BUILD=1.426 Subject: Re: LF: where do I start Content-Type: multipart/alternative; boundary="------------040902000208020207020005" 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=CLICK_BELOW,HTML_40_50, HTML_LINK_CLICK_HERE,HTML_MESSAGE,HTML_TAG_EXISTS_TBODY 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: 1:2:445692000:93952408 X-AOL-SCOLL-URL_COUNT: 1 x-aol-sid: 3039ac1d404a4f7206a97e0a X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. --------------040902000208020207020005 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay2.uni-heidelberg.de id q2RIPgkQ026097 Hi Dave, Good that you answered the mail from a newcomer. Somehow i missed to=20 answer him. You know, the mails coming in quiet quickly :-) Yes, the test with DCF39 is the best test to check if calibration is <=20 +- 1 Hz. The next test would be to look at signals concentrated arround=20 136.172 kHz :-) Accuracy can be checked here to at least +- 0.1 mHz :-) 73, Stefan7DK7FC Am 27.03.2012 17:48, schrieb DAVE PICK: > Bob > > It's not just the sound card that needs calibrating, have you checked=20 > that the converter is on frequency? It needs to be within 10Hz or so=20 > to give you a chance of decoding. Listen on a carrier frequency of=20 > 138.83kHz and see if you have the carrier with regular data bursts=20 > from Germany. It should be S9 whilst the rest of the band is,=20 > hopefully, quiet. If it's not on 138.83 your cal is wrong, if it's=20 > weak your aerial needs tuning and if it's covered in noise you have=20 > real trouble! > > Good luck! > > Dave G3YXM > > On 25 March 2012 20:35, bob@halkirk.org.uk =20 > > wrote: > > Hello > I have got a down converter from 10.000 to 136-1ghz. > I have Wolf and Argo , I followed the calibration instructions for > the soundcard > but all I see to get is corrupt data the odd letter and lots of ?. > My antenna is a 80 40 butternut. Can anyone point me in the right > direction. > regards bob MM0RJR > =09 > > > > > FREE Animations for your email - by IncrediMail > > > Click Here! > > =09 > =E2=96=BA > > > > > > > > --------------040902000208020207020005 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay2.uni-heidelberg.de id q2RIPgkQ026097 Hi Dave,

Good that you answered the mail from a newcomer. Somehow i missed to answer him. You know, the mails coming in quiet quickly :-)
Yes, the test with DCF39 is the best test to check if calibration is < +- 1 Hz. The next test would be to look at signals concentrated arround 136.172 kHz :-) Accuracy can be checked here to at least +- 0.1 mHz :-)

73, Stefan7DK7FC

Am 27.03.2012 17:48, schrieb DAVE PICK:
Bob

It's not just the sound card that needs calibrating, have you checked that the converter is on frequency? It needs to be within 10Hz or so to give you =C2=A0a chance of decoding. Listen on a carrier frequen= cy of 138.83kHz and see if you have the carrier with regular data bursts from Germany. It should be S9 whilst the rest of the band is, hopefully, quiet. If it's not on 138.83 your cal is wrong, if it's weak your aerial needs tuning and if it's covered in noise you have real trouble!

Good luck!

Dave G3YXM

On 25 March 2012 20:35, bob@halkirk.= org.uk <bob@halkirk.org.uk> wrote:
Hello
I have got a down converter from 10.000 to 136-1ghz.
I have Wolf and Argo=C2=A0, I followed the calibration instructions for the soundcard
but all I see to get is corrupt data the odd letter and lots of ?.
My=C2=A0 antenna is a 80 40 butternut. Can anyone point me= in the right direction.
=C2=A0
regards bob MM0RJR

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