Return-Path: Received: from mtain-dg05.r1000.mx.aol.com (mtain-dg05.r1000.mx.aol.com [172.29.65.13]) by air-da09.mail.aol.com (v129.10) with ESMTP id MAILINDA092-86194dc7ba793f; Mon, 09 May 2011 05:57:13 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dg05.r1000.mx.aol.com (Internet Inbound) with ESMTP id CE703380000F6; Mon, 9 May 2011 05:57:11 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1QJNC9-0004OI-H5 for rs_out_1@blacksheep.org; Mon, 09 May 2011 10:56:05 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1QJNC8-0004O9-V6 for rsgb_lf_group@blacksheep.org; Mon, 09 May 2011 10:56:04 +0100 Received: from out1.ip08ir2.opaltelecom.net ([62.24.128.244]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1QJNC6-0004iz-BE for rsgb_lf_group@blacksheep.org; Mon, 09 May 2011 10:56:04 +0100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AvoBAM25x01OlmLA/2dsb2JhbAAMgleUfIMu0SiGDASCKZIBg3uGHg X-IronPort-AV: E=Sophos;i="4.64,339,1301871600"; d="scan'208,217";a="488576096" Received: from unknown (HELO [192.168.2.2]) ([78.150.98.192]) by out1.ip08ir2.opaltelecom.net with ESMTP; 09 May 2011 10:55:56 +0100 Message-ID: <4DC7BA2B.6040304@talktalk.net> Date: Mon, 09 May 2011 10:55:55 +0100 From: qrss User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <750881.73598.qm@web111920.mail.gq1.yahoo.com> In-Reply-To: <750881.73598.qm@web111920.mail.gq1.yahoo.com> X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,RATWARE_GECKO_BUILD=1.426 Subject: Re: VLF: OT - 11.7 Hz signal and multiples Content-Type: multipart/alternative; boundary="------------050800010703060702090308" 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: 3039ac1d410d4dc7ba7644bf X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) --------------050800010703060702090308 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Interesting, 11.7Hz is barely visible here today. I shall take some computer fans outside and run them on 12 Volts near my E-probe. Eddie On 09/05/2011 10:36, Daniele Tincani wrote: > I have found that a PWM Fan Controller (like the ADM1031 from Analog > Devices) can use 11.7 Hz as the PWM frequency driving the fan. I > suspect that in my case the 11.7 Hz signal come from inside my PC. > Regards > Daniele > > ------------------------------------------------------------------------ > *From:* Daniele Tincani > *To:* rsgb_lf_group@blacksheep.org > *Sent:* Mon, May 9, 2011 11:12:13 AM > *Subject:* Re: ELF: ZEVS transmitting from 0800UTC > > Hi Eddie, > I didn't realize you are the author of the web page that I mentioned > in my message below :-) > My compliments also for the very nice grabber page. > Regards > D. > > ------------------------------------------------------------------------ > *From:* qrss > *To:* rsgb_lf_group@blacksheep.org > *Sent:* Mon, May 9, 2011 10:45:21 AM > *Subject:* Re: ELF: ZEVS transmitting from 0800UTC > > Hi Daniele / Chris et al > > I will take a good look at the ZEVS breakfast code in moment, I have > a burst of noise covering the start bit. > > OK on the 11.7Hz Daniele, I will take a close look there too to try > and establish if it is a received signal. These cariers are too stable > to be from local devices I think. > > 73 Eddie G3ZJO > > > > > > On 09/05/2011 09:30, Daniele Tincani wrote: >> Hello Chris, >> I have no doubt that that 11.7Hz-spaced lines on my SpecLab >> screen have a local origin. I am just curious about their source. >> Following web page http://g3zjo-radio.blog.co.uk/ mentions 11.7Hz as >> one of ELF carriers visibile at the author's location (/"At my urban >> location there are several carriers visible, >> 5.9Hz,8.8Hz,*11.7Hz*,16Hz, 23Hz and 32Hz"/) but it does not tell >> anything about the possible origin. >> Regards >> D. >> >> >> ------------------------------------------------------------------------ >> *From:* Chris Dillon >> *To:* rsgb_lf_group@blacksheep.org >> *Sent:* Mon, May 9, 2011 10:17:22 AM >> *Subject:* ELF: ZEVS transmitting from 0800UTC >> >> Hi all - ZEVS transmitting on schedule from 0800 UTC this morning. >> >> Eddie, Daniele - I don't have an 80Hz carrier here at IO92vf. I'll >> look out for the others. >> >> Chris >> >> >> On 08/05/2011 23:52, qrss wrote: >>> Sorry Daniele no idea 1.7Hz and multiples. >>> >>> Both Stefan and I have an 80Hz constant carrier, I am also pretty >>> sure about 16Hz 32Hz and 64Hz being received signals. >>> Perhaps the growing band of listeners can confirm these as also >>> received elsewhere. >>> >>> Eddie >>> >>> On 08/05/2011 23:40, Daniele Tincani wrote: >>>> I see a constant trace at 82Hz, but it appears to be 7 x 11.7Hz, as >>>> I see other similar traces at 6 x 11.7Hz (70.28Hz) and 8 x 11.7Hz >>>> (93.72Hz), etc. Does anyone know about a possible origin of these >>>> 11.7Hz-spaced carriers (or harmonics)? >>>> Regards >>>> Daniele >>> >> > --------------050800010703060702090308 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Interesting, 11.7Hz is barely visible here today. I shall take some computer fans outside and run them on 12 Volts near my E-probe.

Eddie

On 09/05/2011 10:36, Daniele Tincani wrote:
I have found that a PWM Fan Controller (like the ADM1031 from Analog Devices) can use 11.7 Hz as the PWM frequency driving the fan. I suspect that in my case the 11.7 Hz signal come from inside my PC.
Regards
Daniele

From: Daniele Tincani <danieletincani@yahoo.com>
To: rsgb_lf_group@blacksheep.org
Sent: Mon, May 9, 2011 11:12:13 AM
Subject: Re: ELF: ZEVS transmitting from 0800UTC

Hi Eddie,
I didn't realize you are the author of the web page that I mentioned in my message below :-)
My compliments also for the very nice grabber page.
Regards
D.

From: qrss <qrss@talktalk.net>
To: rsgb_lf_group@blacksheep.org
Sent: Mon, May 9, 2011 10:45:21 AM
Subject: Re: ELF: ZEVS transmitting from 0800UTC

Hi Daniele / Chris et al

I will take a good look at  the ZEVS breakfast code in moment, I have a burst of noise covering the start bit.

OK on the 11.7Hz Daniele, I will take a close look there too to try and establish if it is a received signal. These cariers are too stable to be from local devices I think.

73 Eddie G3ZJO





On 09/05/2011 09:30, Daniele Tincani wrote:
Hello Chris,
 
I have no doubt that that 11.7Hz-spaced lines on my SpecLab screen have a local origin. I am just curious about their source.
 
Following web page http://g3zjo-radio.blog.co.uk/ mentions 11.7Hz as one of ELF carriers visibile at the author's location ("At my urban location there are several carriers visible, 5.9Hz,8.8Hz,11.7Hz,16Hz, 23Hz and 32Hz") but it does not tell anything about the possible origin.
 
Regards
D.


From: Chris Dillon <c.r.dillon@dsl.pipex.com>
To: rsgb_lf_group@blacksheep.org
Sent: Mon, May 9, 2011 10:17:22 AM
Subject: ELF: ZEVS transmitting from 0800UTC

Hi all - ZEVS transmitting on schedule from 0800 UTC this morning.

Eddie, Daniele - I don't have an 80Hz carrier here at IO92vf. I'll look out for the others.

Chris


On 08/05/2011 23:52, qrss wrote:
Sorry Daniele no idea 1.7Hz and multiples.

Both Stefan and I have an 80Hz constant carrier, I am also pretty sure about 16Hz 32Hz and 64Hz being received signals.
Perhaps the growing band of listeners can confirm these as also received elsewhere.

Eddie

On 08/05/2011 23:40, Daniele Tincani wrote:
I see a constant trace at 82Hz, but it appears to be 7 x 11.7Hz, as I see other similar traces at 6 x 11.7Hz (70.28Hz) and 8 x 11.7Hz (93.72Hz), etc. Does anyone know about a possible origin of these 11.7Hz-spaced carriers (or harmonics)?
Regards
Daniele




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