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| To: | [email protected] |
|---|---|
| Subject: | Re: LF: New VLF Grabber in Darmstadt |
| From: | pws <[email protected]> |
| Date: | Wed, 27 Jun 2012 10:49:53 +0200 |
| Cc: | [email protected] |
| In-reply-to: | <[email protected]> |
| References: | <[email protected]> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
| User-agent: | Mozilla/5.0 (X11; U; Linux i686; de; rv:1.9.2.24) Gecko/20111101 SUSE/3.1.16 Thunderbird/3.1.16 |
Hi Stefan, You wrote: ... Today i want to inform you about a new VLF Grabber at the Technical University of Darmstadt, http://skmail.ikp.physik.tu-darmstadt.de/gvw/grabber.html run by Christoph Maurer who is working in the nuclear science institute. Seems they want to observe the VLF spectrum and try to make some earthquake precursors. > ...Missing many usual suspects at LF like MSF, 60 kHz or 81 kHz from Inskip etc. Instead 45.9 kHz, Sicily, appears at reasonable strength. May be they are running a loop with E/W-nulls? Furthermore those typical rise of noise floor from soundcards running at high sampling rates is visible. So, some 15-20 dB more gain especially above 30 kHz is recommended. Peter, Kiel http://df3lp.de |
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