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 autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: EATSERVER: mailn 1166; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mailn.lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id uB9GMUla027841 for ; Fri, 9 Dec 2016 17:22:31 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cFNq0-00086b-9Z for rs_out_1@blacksheep.org; Fri, 09 Dec 2016 16:15:56 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cFNpy-00086S-D6 for rsgb_lf_group@blacksheep.org; Fri, 09 Dec 2016 16:15:54 +0000 Received: from emout04.email.it ([212.97.34.71]) by relay1.thorcom.net with esmtp (Exim 4.87) (envelope-from ) id 1cFNps-0002EQ-KY for rsgb_lf_group@blacksheep.org; Fri, 09 Dec 2016 16:15:53 +0000 Received: from emout04.email.it (localhost [127.0.0.1]) by emout04.email.it (Postfix) with ESMTP id 3852496212; Fri, 9 Dec 2016 17:15:41 +0100 (CET) Received: from x220.localnet (unknown [94.36.138.147]) by emout04.email.it (Postfix) with ESMTPA id 094AE96210; Fri, 9 Dec 2016 17:15:39 +0100 (CET) From: Claudio Pozzi To: rsgb_lf_group@blacksheep.org Cc: Renato Romero Date: Fri, 09 Dec 2016 17:15:52 +0100 Message-ID: <4816231.nTkuZnf40g@x220> User-Agent: KMail/4.14.1 (Linux/3.16.0-4-amd64; KDE/4.14.2; x86_64; ; ) In-Reply-To: <584AC31C.20803@posteo.de> References: <158ddfd1f0b-5980-42e@webprd-a47.mail.aol.com> <584AC31C.20803@posteo.de> MIME-Version: 1.0 X-Scan-Signature: 0b36c952c26be93e626fe2fa1c93657f Subject: Re: ULF: Finally 100 mA on 2.97 kHz / 65 km ULF experiment Content-Type: multipart/alternative; boundary="nextPart1541841.LtMAo3bxx7" Content-Transfer-Encoding: 7Bit 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: O X-Status: X-Keywords: X-UID: 9753 This is a multi-part message in MIME format. --nextPart1541841.LtMAo3bxx7 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" On Friday 09 December 2016 15:43:40 you wrote: > After doing a lot of modifications here on the TX side, the effect still > exists. I can't get rid of the unstable phase shown on the VLF tree grabber. > > One thing to mention is that the phase seems to change slowly, no sudden > phase jumps. Thus the peak is 40 dB S/N in 47 uHz. So obviously there > were much less uncorrected phase glitches than expected in the first > moment when i saw the effect. > May be a crazy idea... but the atmosphere refractive index (and light speed and wavelength) change a little with pressure, temperature and humidity. 50 uHz at 3 kHz are 1.7e-8 so may be you can detect very little drifts. http://emtoolbox.nist.gov/Wavelength/Documentation.asp[1] 73 de Claudio, ik2pii -------- [1] http://emtoolbox.nist.gov/Wavelength/Documentation.asp -- ZE-Light e ZE-Pro: servizi zimbra per caselle con dominio email.it, per tutti i dettagli Clicca qui http://posta.email.it/caselle-di-posta-z-email-it.php?utm_campaign=email_Zimbra_102014=main_footer/f Sponsor: Soluzioni di email hosting per tutte le esigenze: dalle caselle gratuite a quelle professionali su piattaforma Zimbra, da quelle su proprio dominio a quelle certificate PEC. Confronta le soluzioni Clicca qui: http://adv.email.it/cgi-bin/foclick.cgi?mid=13326&d=9-12 --nextPart1541841.LtMAo3bxx7 Content-Transfer-Encoding: 7Bit Content-Type: text/html; charset="us-ascii"

On Friday 09 December 2016 15:43:40 you wrote:

> After doing a lot of modifications here on the TX side, the effect still

> exists. I can't get rid of the unstable phase shown on the VLF tree grabber.

> One thing to mention is that the phase seems to change slowly, no sudden

> phase jumps. Thus the peak is 40 dB S/N in 47 uHz. So obviously there

> were much less uncorrected phase glitches than expected in the first

> moment when i saw the effect.

May be a crazy idea... but the atmosphere refractive index (and light speed and wavelength) change a little with pressure, temperature and humidity.

50 uHz at 3 kHz are 1.7e-8 so may be you can detect very little drifts.

http://emtoolbox.nist.gov/Wavelength/Documentation.asp

73 de Claudio, ik2pii

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