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1. Re: LF: Re: Schumann in my garden, final circuit design (score: 1): Author: DK7FC <[email protected]>; Date: Sat, 25 Oct 2014 23:33:24 +0200; Hi ELF friends, Just for those who are interested... I have now finished my modifications to the ELF RX / preamp design for a long wire (E field) antenna. This is the final schematic https://dl.dropb; /rsgb_lf_group-archives/html/rsgb_lf_group/2014-10/msg00304.html (17,644 bytes)
2. Re: LF: Re: Schumann in my garden, final circuit design (score: 1): Author: Markus Vester <[email protected]>; Date: Sat, 25 Oct 2014 19:32:40 -0400; Hi Stefan, very nice result! Your spectrogram also contains 60 Hz from America, not too conspicuous but easily visible with a little visual averaging. 73, Markus (DF6NM) --Ursprüngliche Mitteilung--; /rsgb_lf_group-archives/html/rsgb_lf_group/2014-10/msg00306.html (16,806 bytes)
3. Re: LF: Re: Schumann in my garden, final circuit design (score: 1): Author: DK7FC <[email protected]>; Date: Mon, 27 Oct 2014 22:19:19 +0100; Markus, Another thought: Could it be the frequency of an old monitor running 60Hz frequency for the screen? Wolf already sentioned something... It was a matter of frequency stability that gives the p; /rsgb_lf_group-archives/html/rsgb_lf_group/2014-10/msg00344.html (17,926 bytes)

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