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1. LF: RE: New experiments on 17.47 kHz planned... (score: 1): Author: VIGILANT Luis Fernández <[email protected]>; Date: Fri, 14 Sep 2018 07:49:37 +0000; Congratulations Edgar and Stefan!! Amazing achievement :-O Not sure if everybody can really understand how weak and buried in noise was that signal Some kind of comparation would be useful to illustr; /rsgb_lf_group-archives/html/rsgb_lf_group/2018-09/msg00187.html (15,741 bytes)
2. Re: LF: RE: New experiments on 17.47 kHz planned... (score: 1): Author: Paul Nicholson <[email protected]>; Date: Fri, 14 Sep 2018 08:23:42 +0000; 1.6 info bits per hour across a 16800 km path, 42% of the Earth's circumference, using 2mW, much less than the power of a small LED. S/N -65 dB in an audio bandwidth. Not a bad result there, at a ra; /rsgb_lf_group-archives/html/rsgb_lf_group/2018-09/msg00188.html (9,876 bytes)
3. RE: LF: RE: New experiments on 17.47 kHz planned... (score: 1): Author: <[email protected]>; Date: Fri, 14 Sep 2018 12:35:33 -0400; The attached shows close experimental and theoretical agreement on an "attenuation summit" at ~ 17000 km at ~ 17 kHz; the hemispherical distance at which the signal is weakest, past which it is down; /rsgb_lf_group-archives/html/rsgb_lf_group/2018-09/msg00191.html (11,824 bytes)

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