From: =?iso-8859-1?Q?VIGILANT_Luis_Fern=E1ndez?= <luis@vigilant.es>
To: "rsgb_lf_group@blacksheep.org" <rsgb_lf_group@blacksheep.org>
Thread-Topic: Almost touching the ground... | 12.47 Hz
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Date: Wed, 6 Mar 2019 08:18:38 +0000
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Subject: LF: RE: Almost touching the ground... | 12.47 Hz
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Hi ELF

Absolutely outstanding achievement Stefan

A different world and truly physics experiment. Then you will have to hear those blind minded regulators
claiming to state rules at this frequencies. Always recurrent to contest, QSOs and bandplans ... LoL!!
But that is all you can expect from the average HF byassed amateur-lawyers we already have at IARU

This is like Antarctica. Mother nature and virgin territory for the real pyoneers who dare to explore it

My pleasure and deepest recognition for your success :-)

73 de Luis
EA5DOM

-----Mensaje original-----
De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] En nombre de DK7FC
Enviado el: martes, 05 de marzo de 2019 19:45
Para: rsgb_lf_group@blacksheep.org
Asunto: ELF: Almost touching the ground... | 12.47 Hz

Hi ELF friends,

During the last 2 weeks i've done another experiment on ELF, this time on 12.47 Hz, the 24 Mm band (wavelength 24057 km). Again i've crossed the local distance of 3.5 km. That's the lowest frequency i've ever been and it feels like i can see the ground already :-) The dimensions of everything down there are extreme. I've integrated 227 hours of a carrier transmission into one spectrum peak, it is shown in the attachment in 1.25 uHz. This carrier could have transferred an EbNaut message of nearly 100 characters.

The ERP was 50 attowatt or -163 dBW and the antenna current was 170 uA only, despite about 5 kV antenna voltage.

I'm now trying to put a step below 10 Hz but the RX antenna becomes less efficient with each Hz.

73, Stefan