Return-Path: Received: from rly-mf10.mx.aol.com (rly-mf10.mail.aol.com [172.20.29.180]) by air-mf08.mail.aol.com (v125.7) with ESMTP id MAILINMF081-9834ae81c8015b; Wed, 28 Oct 2009 06:27:25 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mf10.mx.aol.com (v125.7) with ESMTP id MAILRELAYINMF101-9834ae81c8015b; Wed, 28 Oct 2009 06:27:14 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1N35jP-0006T6-W4 for rs_out_1@blacksheep.org; Wed, 28 Oct 2009 10:26:19 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1N35jP-0006Sx-8D for rsgb_lf_group@blacksheep.org; Wed, 28 Oct 2009 10:26:19 +0000 Received: from fg-out-1718.google.com ([72.14.220.154]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1N35j8-0002GQ-LZ for rsgb_lf_group@blacksheep.org; Wed, 28 Oct 2009 10:26:07 +0000 Received: by fg-out-1718.google.com with SMTP id 16so1604417fgg.10 for ; Wed, 28 Oct 2009 03:26:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=ABJYcwRArk3fMkn+jj+aaOP/Q+WbFW57jiO+I1bwDSA=; b=eIrziDgiCls2GWxUbbCLwUFnJ42Vh4xh+wainYwGKcTRDlEejprCj2VuZcuR4kCyWy FfbKS3FtJJFEoSryMlzSFh4O/biOFZR3LbQV2zVvZdPANx6GKu/UdW8aYXY25RNO/xE/ jhB1a33N8t0MuUyEERUjpVAjvrbdwHoylBgvE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=V8NzPnRCTu41dgF+gSzowi9pF6p3QJ9cORMzkX8iFFYPPATSaVlVqmVYD8AK0yLdeV h8q+xiKqho2/J18Kr2UrwCCjCKy260KjsYieVnN9XPPgMhCIXkOC6yrzrMw0rGpisVHL cKxm66eqoCkzHlBacj4x/jfRr4v1jGka2z/wE= MIME-Version: 1.0 Received: by 10.239.139.6 with SMTP id r6mr736021hbr.205.1256725558768; Wed, 28 Oct 2009 03:25:58 -0700 (PDT) In-Reply-To: <1453075466@web.de> References: <1453075466@web.de> Date: Wed, 28 Oct 2009 10:25:58 +0000 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: Throb -2- beacon 503.000 Content-Type: multipart/alternative; boundary=001485f1e44e82b6d30476fc38df X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=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-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-m223.2 ; domain : googlemail.com DKIM : pass X-Mailer: Unknown (No Version) --001485f1e44e82b6d30476fc38df Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable VAC can cause timing problems inteh conversion of one sampling rate to another as it crosses the Virtual Audio backplane. I use cheap 'headphone dongles' to add additional soundcards for the SDR then cross-patch the audio leads as necessary. That way timing issues= due to poor sample rate conversion are removes, leaving just frequency innaccuracies which are hardly ever a problem. The only downside is that many of the low cost units (=C2=A35 from Ebay,= for example) only have a mono microphone input, meaning they can't be used wit= h I/Q inputs from Softrockks or similar. However, the headphone O/P is stereo, but you need to be aware that the headphone ground usually sits at= a few volts positive so needs to be isolated to avoid damage. I'vew used many of these modules, sometimes building them into equipment= to give a simple USB audio interface, and having the USB's 5V supply to play with as well. Andy www.g4jnt.com this email has been scanned for political correctness by the nanny state 2009/10/28 Horst St=C3=B6cker > to Lubos (and anyone who may be interested): > Did you ever hear of a software named "virtual audio cable"? For example > you can send your SDR-signal to the virtual Soundcard. From that you can > decode THROB or what ever. So you do not need a second computer for > decoding. The speed of the computer who has to mange both must be higher= , of > course. > Horst DO1KHS > > > -----Urspr=C3=BCngliche Nachricht----- > > Von: "Lubos OK2BVG" > > Gesendet: 27.10.09 22:51:54 > > An: > > Betreff: RE: LF: Throb -2- beacon 503.000 > > Hello Graham, LF! > > Sorry, but I use my computer together with SDR-IQ as a LF receiver > > and I haven=C5=BDt got the other PC for decoding THROB packets. But yo= ur > > signal is nice! > > > > Lubos, OK2BVG > > > > From: g8fzk@g8fzk.fsnet.co.uk > > To: rsgb_lf_group@blacksheep.org > > Date: Tue, 27 Oct 2009 21:34:27 +0000 > > Subject: Re: LF: Throb -2- beacon 503.000 > > > > Tnx Lubos > > > > Are you able to decode any of the signal ??? > > > > I use > http://www.w1hkj.com/Fldigi.html > > > > Tnx - Graham .. > > > > *From:*Lubos OK2BVG > > *Sent:* Tuesday, October 27, 2009 9:05 PM > > *To:*rsgb_lf_group@blacksheep.org > > *Subject:* RE: LF: Throb -2- beacon 503.000 > > > > Hello Graham, LF! > > I see your beacon=C5=BDs packets very well. > > > > 73! > > > > Lubos, OK2BVG, JN88KS > > From: g8fzk@g8fzk.fsnet.co.uk > > To: rsgb_lf_group@blacksheep.org > > Date: Tue, 27 Oct 2009 17:28:12 +0000 > > Subject: LF: Throb -2- beacon 503.000 > > > > Running THROB-2- Beacon 503.000 khz centre frequency > > > > TX set 502.000 USB > > Audio 1000 Hz cent frequency > > > > Repeat time 60 seconds > > > > RX 'ON' during cycle tx 'off' time > > > > Reports / observations > > > > Tnx Graham > > > > G0NBD - IO83LK > > > > Windows 7: Kter=C3=BD po=C3=A8=C3=ADta=C3=A8 je pro v=C3=A1s ten prav= =C3=BD? Dal=C2=B9=C3=AD informace. > > > > No virus found in this incoming message. > > Checked by AVG - www.avg.com > > Version: 8.5.423 / Virus Database: 270.14.34/2462 - Release Date: 10/ > > 27/09 07:38:00 > > > > > > Windows 7: Kter=C3=BD po=C3=A8=C3=ADta=C3=A8 je pro v=C3=A1s ten prav= =C3=BD? Dal=C2=B9=C3=AD informace. > > > _______________________________________________________________ > Neu: WEB.DE DSL bis 50.000 kBit/s und 200,- Euro > Startguthaben! > http://produkte.web.de/go/02/ > > > --001485f1e44e82b6d30476fc38df Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
VAC can cause timing problems inteh conversion of one sampling rate= to another as it crosses the Virtual Audio backplane.
=C2=A0
I use cheap 'headphone dongles'=C2=A0=C2=A0to add=C2=A0additi= onal soundcards for the SDR then cross-patch the audio leads as necessary.= =C2=A0=C2=A0=C2=A0 That way timing issues due to poor sample rate conversi= on are removes, leaving just frequency innaccuracies which are hardly ever= a problem.
=C2=A0
The only downside is that many of the low cost units (=C2=A35 from Eb= ay, for example) only have a mono microphone input, meaning they can't= be used with I/Q inputs from Softrockks or similar.=C2=A0=C2=A0 However,= the headphone O/P is stereo, but you need to be aware that the headphone= ground usually sits at a few volts positive so needs to be isolated to av= oid damage.
=C2=A0
I'vew used many of these modules, sometimes building them into eq= uipment to give a simple USB audio interface, and having the USB's 5V= supply to play with as well.

Andy
www.g4jnt.= com

this email has been scanned for political correctness by th= e nanny state


2009/10/28 Horst St=C3=B6cker <horst.stoecker@web.de>= ;
to Lubos (and anyone who may be interested):
Did you= ever hear of a software named "virtual audio cable"? For exampl= e you can send your SDR-signal to the virtual Soundcard. From that you can= decode THROB or what ever. So you do not need a second computer for decod= ing. The speed of the computer who has to mange both must be higher, of co= urse.
Horst DO1KHS

> -----Urspr=C3=BCngliche Nachricht-----
> Vo= n: "Lubos OK2BVG" <bvgb= ob@hotmail.com>
> Gesendet: 27.10.09 22:51:54
>= An: <rsgb_lf_group@bla= cksheep.org>
> Betreff: RE: LF: Throb -2- beacon 503.000

Hello Graham, LF!
> Sorry, but I use my comput= er together with SDR-IQ as a LF receiver
> and I haven=C5=BDt= got the other PC for decoding THROB packets. But your
> signal is nice!
>
> Lubos, OK2BVG
&g= t;
> From: g8fzk@g8fzk.fs= net.co.uk
> To: rsgb_lf_group@blacksheep.org
> Date: Tue, 27 Oct 2009 21:34:27 +0000
> Subject: Re: LF: Throb -2- beacon 503.000
>
> Tnx Lubos
>
> Are you able to decode an= y of the signal ???
>
> I use > http://www.w1hkj.com/Fldigi.html>
> Tnx - Graham ..
>
> =C2=A0*From:*Lubos OK2BVG
&g= t; =C2=A0*Sent:* Tuesday, October 27, 2009 9:05 PM
> =C2=A0*To:*rsgb_lf_group@blacksheep.org
> =C2=A0*Subject:* RE: LF:= Throb -2- beacon 503.000
>
> Hello Graham, LF!
>= I see your beacon=C5=BDs packets very well.
>
> 73!
>
> Lubos, OK2BVG, JN88KS> From: g8fzk@g8fzk.fsnet.= co.uk
> To: rsgb_lf_group@blacksheep.org
> Date: Tue, 27 Oct 2009 17:28:12 +0000
> Subject: LF: Throb -2- beacon 503.000
>
&g= t; Running THROB-2- Beacon 503.000 khz centre frequency
>
> TX= set 502.000 USB
> Audio 1000 Hz cent frequency
>
> Repe= at time 60 seconds
>
> RX 'ON' during cycle tx 'off' time
>> Reports / observations
>
> Tnx Graham
>
> G0= NBD - IO83LK
>
> Windows 7: Kter=C3=BD po=C3=A8=C3=ADta= =C3=A8 je pro v=C3=A1s ten prav=C3=BD? Dal=C2=B9=C3=AD informace.
>
> No virus found in this incoming message.> Checked by AVG - w= ww.avg.com
> Version: 8.5.423 / Virus Database: 270.14.34/2462= - Release Date: 10/
> 27/09 07:38:00
>
>
> Windows 7: Kter=C3=BD po=C3=A8=C3=ADta=C3=A8 je pro= v=C3=A1s ten prav=C3=BD? Dal=C2=B9=C3=AD informace.


__________= _____________________________________________________
Neu: WEB.DE DSL bis 50.000 kBit/s und 200,= - Euro Startguthaben!
http://produkt= e.web.de/go/02/



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