The idea of listening an emission originated not from a radio operator, not from a modem, not from any device finds us a bit surprised at once. May be because we would expected to find noise, electric discharge or something like that. But when we find tone, whistlers and other, superimposed as a human voices chorus, we are astonished thinking nobody has generated them. When we discover the links between these emissions and the magnetic field of the earth, the atmospherics storms and physical atomic reactions which happen several thousands kilometers from earth, we are stupefied.
This article goes into the description of phenomena occurring in the lower part of VLF that is from 0 to 15 kHz, also named “Nature Radio”. Radio signals with wave lenght of tenth or hundreds kilometers, together with the electromagnetic component, take with them the earth voice and the space around it.
The idea of listening an emission originated not from a radio operator, not from a modem, not from any device finds us a bit surprised at once. May be because we would expected to find noise, electric discharge or something like that. But when we find tone, whistlers and other, superimposed as a human voices chorus, we are astonished thinking nobody has generated them. When we discover the links between these emissions and the magnetic field of the earth, the atmospherics storms and physical atomic reactions which happen several thousands kilometers from earth, we are stupefied. This article goes into the description of phenomena occurring in the lower part of VLF that is from 0 to 15 kHz, also named “Nature Radio”. Radio signals with wave lenght of tenth or hundreds kilometers, together with the electromagnetic component, take with them the earth voice and the space around it.
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