The very low frequency (VLF) band abounds with interesting natural emissions, and listening to these Earth sounds can be quite a treat. The VLF band is roughly defined as the region of the ...

Most of the challenge in receiving the Alexanderson transmitter broadcasts are due to this very low broadcast frequency ... The original SAQrx VLF Receiver and the extended version both use ...

Quasiperiodic (QP) very low frequency (VLF) emissions are intriguing phenomena observed in the Earth's magnetosphere, characterized by their periodic intensity modulation. These emissions are ...

There are three major types of metal detectors, in ascending order of cost: Very low frequency (VLF), multi-frequency, and ...

Ragnar Metals Ltd (ASX:RAG) has discovered multiple conductors associated with polymetallic mineralisation at its Viken ...

There are three major types of metal detectors, in ascending order of cost: Very low frequency (VLF), multi-frequency, and pulse induction (PI). Very low frequency detectors operate on one ...

The FFT analysis lies in the very-low-frequency (VLF) zone in both groups. During exercise, H group shows a significant decrease in all parameters; the PGA turns to “torpedo-type” and the FFT remains ...