Extremely Low Frequency
This section deals with the reception of electromagnetic energy such as Schumann Resonance. A description may be found here: Schumann . I have used quite a few receiver designs for the reception of these signals in conjunction with the Induction Coil ( Magnetometer ). The best performance was had using the circuitry shown at the link below. There are seven resonances but only six are shown in the graphs. The graphs were produced using a software program by Spectrogram. A link has been provided.
For a fun prospective concerning Schumann Resonance, Geomagnetic activity and how they may affect our moods I have authored an online book available by clicking the book icon. Measurement of Schumann Resonance and Geomagnetism was conducted in Sedona Arizona famed for what is called ( Vortex Energy ). You may also download a printable version of the book in Word format.
