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This video shows 2 spectra of signals recorded on a PC. The signal is taken from the inductive sensors presented at the beginning and end of the video. But the left sensor is connected to ground. Interesting signals at frequencies of 1-3 Hz, their changeable shape differs markedly from straight lines of 50 Hz and overlying harmonics. As well as other signals ~10, ~15, ~25, ~35 Hz and variable activity at fractions of a hertz. It is known from open sources that the range from 30 to 300 Hz is used for communication with strategic submarines. And the range is from 3 to 30 Hz for communication with underground objects and experimental studies. More frequencies up to 10 Hz belong to the geomagnetic background of the sound in this video in real time from these sensors, in addition to powerful power harmonics of 50 Hz, you can hear various rustles, clicks, buzzes and slow changes in the tone of power harmonics. О ПРОИСХОЖДЕНИИ ЧАСТОТНОЙ МОДУЛЯЦИИ СЕРПЕНТИННОЙ ЭМИССИИ Previous monitoring is in playlists: EMF monitor Очень Низкая Частота ~ Very Low Frequency SIGNALS IN THE GROUND
