Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE,RCVD_IN_DNSWL_MED, SPF_PASS,T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: : mailn 1480; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id v5DFjo0A007020 for ; Tue, 13 Jun 2017 17:45:51 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1dKnwh-0004mN-7v for rs_out_1@blacksheep.org; Tue, 13 Jun 2017 16:41:31 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1dKnwf-0004mE-HV for rsgb_lf_group@blacksheep.org; Tue, 13 Jun 2017 16:41:29 +0100 Received: from omr-m013e.mx.aol.com ([204.29.186.14]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.89) (envelope-from ) id 1dKnwa-0002RF-HW for rsgb_lf_group@blacksheep.org; Tue, 13 Jun 2017 16:41:28 +0100 Received: from mtaomg-aam02.mx.aol.com (mtaomg-aam02.mx.aol.com [172.27.19.148]) by omr-m013e.mx.aol.com (Outbound Mail Relay) with ESMTP id EECE03800132 for ; Tue, 13 Jun 2017 11:41:21 -0400 (EDT) Received: from core-acb10h.mail.aol.com (core-acb10.mail.aol.com [172.27.24.10]) by mtaomg-aam02.mx.aol.com (OMAG/Core Interface) with ESMTP id E605338000087 for ; Tue, 13 Jun 2017 11:41:19 -0400 (EDT) Received: from 80.146.228.71 by webprd-m105.mail.aol.com (10.74.51.145) with HTTP (WebMailUI); Tue, 13 Jun 2017 11:41:19 -0400 Date: Tue, 13 Jun 2017 11:41:19 -0400 From: Markus Vester To: rsgb_lf_group@blacksheep.org Message-Id: <15ca21dc75e-1e15-bcda@webprd-m105.mail.aol.com> In-Reply-To: <593FE56D.4000100@posteo.de> MIME-Version: 1.0 X-MB-Message-Source: WebUI X-MB-Message-Type: User X-Mailer: JAS STD X-Originating-IP: [80.146.228.71] x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1497368481; bh=svFhXqLdWi8HfRx72HbpUfz3IOm4SRerUfgrr6ddb6w=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=YnHPAKWbSpQnZwA+1ugPG93gshTgFfyh0XGtnmW2+i9CNVeY/6rSZe6jtfcCTda6M Hvo5Pg4kU30nbcGnSNhGiWk4kPtu23A13maiChsxpZJ5GoSGM1CquQi/XI0ri0ggKr FxLjvOGq2lLJzdqxy0pa/5utTLtLdGRAgr5PcgLg= x-aol-sid: 3039ac1b13945940079f5881 X-Scan-Signature: 94a3ffcd3903efbf0b2b811b1b1cc0bf Subject: Re: LF: Octo-soundcard for the Raspi Content-Type: multipart/alternative; boundary="----=_Part_58031_1454668010.1497368479580" 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-Scanned-By: MIMEDefang 2.75 Status: RO X-Status: X-Keywords: X-UID: 11970 ------=_Part_58031_1454668010.1497368479580 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi Terry, Stefan, yes, seeing Paul's encouraging results on the VLF_Group thread (https://gro= ups.yahoo.com/neo/groups/VLF_Group/conversations/messages/25666 and earlier= posts) made me want to try it out myself. But it looks like I came too lat= e :-( Anyway it will be interesting to follow your progress towards coheren= t multichannel VLF reception. BTW the Octo card is specified to 96 kHz samplerate, even though the data s= heet says that the chip could do up to 192 kHz - would that be limited by R= asPi SPI bandwidth? Best 73, Markus -----Urspr=C3=BCngliche Mitteilung-----=20 Von: DK7FC An: rsgb_lf_group Verschickt: Di, 13. Jun 2017 15:17 Betreff: Re: LF: Octo-soundcard for the Raspi Hi all,=20 Since a few minutes, the octo soundcard became part of my portable VLF/ULF= recorder based on the Raspi. I did not follow the dicsuccions on the yahoo groups. For now i can tell that the soundcard is based on the chipset CS42440-DQZ, = see the data sheet at https://d3uzseaevmutz1.cloudfront.net/pubs/proDatashe= et/CS42448_F5.pdf I'm looking forward to the first tests. BTW i got an idea how to solve the problems with portable operation of the= Raspi when using vlfrx tools. vlfrx tools needs a 1PPS reference and the n= tpd service to generate a timestamp. But in portable operation there is no = internet access, so no tracking of the clock time. After shutting down and = restarting the raspi, the clock has an offset, it continues with the time j= ust before the shut down. So that's the problem. BUT! The GPS module provid= es NMEA informations containing the current date and time. It can be connec= ted to the serial input of the Raspi. I assume there are already available = scripts which periodically set the Raspi clock from the data received from = the GPS module via the serial interface! Probably i'm not the first one who got this idea, but that doesn't matter = :-) Images of the old and new version... https://www.dropbox.com/sh/55o7vyie5yo02m2/AAA-tCIYAGmu2YeCdbWNr7MJa?dl=3D0 73, Stefan Am 13.06.2017 14:52, schrieb Terry G0EZY:=20 When Stefan posted the Amazon UK link on 5th June, there were 5 available i= n the UK. Stefan, Paul and I bought one each - not sure where the others we= nt! Have you been following Paul's tests with his vlfrx tools and RaPi/Octo set= up on the Yahoo VLF Group (not the RSGB vlf group)?=20 After getting successful crowd funding for the Octo project, it seems crazy= to release such a small batch. Although all those that backed the project = with a donation got one or more boards depending on how much invested. Mayb= e that exhausted the interest? Flatmax org has another RaPi audio project asking for funding - according t= o one post on the VLF group, it could have a facility for external timing o= scllator injection.=20 Terry =20 On 13/06/2017 12:25, Markus Vester wrote: Looks like they're sold out on amazon.uk. Still available in the US but unf= ortunately they won't ship to Germany. Does anyone know another source? Markus (DF6NM) -----Urspr=C3=BCngliche Mitteilung-----=20 Von: DK7FC An: rsgb_lf_group Verschickt: Mo, 5. Jun 2017 16:39 Betreff: Re: LF: Octo-soundcard for the Raspi Hi all, Oh, now it is available at amazon UK:=20 https://www.amazon.co.uk/Octo-channel-sound-card-Raspberry/dp/B06Y3PZ6MF But not in DL... 73, Stefan Am 31.05.2017 15:05, schrieb DK7FC: > Hi all, > > Does someone tried the new octo-coundcard with 6 inputs for the Raspi? > There is a forum link:=20 > http://www.flatmax.org/phpbb/viewforum.php?f=3D9&sid=3D38d2f3c26e926886b= 446abdadb011928=20 > > It looks like they are available in the US now. As far as i can see=20 > there's still nothing in UK or DL... > > 73, Stefan > ------=_Part_58031_1454668010.1497368479580 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Hi Terry, Stefan,

yes, seeing Paul's en= couraging results on the VLF_Group thread (https://groups.yahoo.com/ne= o/groups/VLF_Group/conversations/messages/25666 and earlier posts) mad= e me want to try it out myself. But it looks like I came too late :-( = Anyway it will be interesting to follow your progress towards coh= erent multichannel VLF reception.

BTW the Octo card is specifie= d to 96 kHz samplerate, even though the data sheet says that the chip = could do up to 192 kHz - would that be limited by RasPi SPI bandwidth?=

Best 73,
Markus

-----Urspr=C3=BCngliche Mitteilung----- <= br>Von: DK7FC <selberdenken@posteo.de>
An: rsgb_lf_group <rsgb_= lf_group@blacksheep.org>
Verschickt: Di, 13. Jun 2017 15:17
Betref= f: Re: LF: Octo-soundcard for the Raspi

Hi all,

Since a few minutes, the octo soundcard became part of my portable VLF/ULF recorder based on the Raspi.
I did not follow the dicsuccions on the yahoo groups.
For now i can tell that the soundcard is based on the chipset CS42440-DQZ, see the data sheet at https://d3uzseaevmutz1.cloudfront.net/pubs/proDatasheet/= CS42448_F5.pdf

I'm looking forward to the first tests.

BTW i got an idea how to solve the problems with portable operation of the Raspi when using vlfrx tools. vlfrx tools needs a 1PPS reference and the ntpd service to generate a timestamp. But in portable operation there is no internet access, so no tracking of the clock time. After shutting down and restarting the raspi, the clock has an offset, it continues with the time just before the shut down. So that's the problem. BUT! The GPS module provides NMEA informations containing the current date and time. It can be connected to the serial input of the Raspi. I assume there are already available scripts which periodically set the Raspi clock from the data received from the GPS module via the serial interface!
Probably i'm not the first one who got this idea, but that doesn't matter :-)

Images of the old and new version...

https://www.dropbox.com/sh/55o7vyie5yo02m2/AAA-tCI= YAGmu2YeCdbWNr7MJa?dl=3D0

73, Stefan



Am 13.06.2017 14:52, schrieb Terry G0EZY:
=20

When Stefan posted the Amazon UK link on 5th June, there were 5 available in the UK. Stefan, Paul and I bought one each - not sure where the others went!

Have you been following Paul's tests with his vlfrx tools and RaPi/Octo setup on  the Yahoo VLF Group (not the RSGB vlf group)?

After getting successful crowd funding for the Octo project, it seems crazy to release such a small batch. Although all those that backed the project with a donation got one or more boards depending on how much invested. Maybe that exhausted the interest?

Flatmax org has another RaPi audio project asking for funding - according to one post on the VLF group, it could have a facility for external timing oscllator injection.

Terry

 
On 13/06/2017 12:25, Markus Vester= wrote:
Looks like they're sold out on amazon.uk. Still available in the US but unfortunately they won't ship to Germany. Does anyone know another source?

Markus (DF6NM)


-----Urspr=C3=BCngliche Mitteilung-----
Von: DK7FC <selberd= enken@posteo.de>
An: rsgb_lf_group https://www.ama= zon.co.uk/Octo-channel-sound-card-Raspberry/dp/B06Y3PZ6MF

But not in DL...

73, Stefan

Am 31.05.2017 15:05, schrieb DK7FC:
> Hi all,
>
> Does someone tried the new octo-coundcard with 6 inputs for the Raspi?
> There is a forum link:
> http://www.flatmax.org/phpbb/viewforum.php?f=3D9&sid=3D38d2f3c26e9= 26886b446abdadb011928
>
> It looks like they are available in the US now. As far as i can see
> there's still nothing in UK or DL...
>
> 73, Stefan
>


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