Short for SENTINEL ASSIGNMENT TELEMETRY AND NOTIFICATION, S.A.T.A.N. functions as the hub of all technology on Skinwalker Ranch.

Equipped with the latest in sensory technology, buried in a concrete bunker under SWR, S.A.T.A.N. has capabilities not limited to the following:

1. Infrasonic recording (sounds below human hearing).

2. Seismic Geophones - A device that converts ground movement (velocity) into voltage, which are recorded constantly. The deviation of this measured voltage from the base line is called the seismic response and is analyzed for structure of the earth. ... A notable example is in the application of remote ground sensors (RGS).

3. Radio-Frequency Spectrum Analyzers. These are test instruments used to look at signals in the frequency domain, i.e. a plot of signal strength against frequency.

4. Aircraft Transponder Receiver. An electronic device that receives transponder information from all aircraft. Aircraft have transponders to assist in identifying them on air traffic control radar.

5. Magnetic Sensors for Transient Frequencies. An active magnetic field sensor consisting of an electrically small loop, two ferrite core transformers, and a balanced amplifier with a low input impedance is suitable for measurements of fields, in a broad range of frequencies, and transients. The sensor provides a flat transfer function from approximately 600 Hz to 200 MHz (3 dB roll-off frequencies) and high-fidelity reproduction of pulses with a risetime of 2 ns.

6. Software Definable Radios. These allow us to pinpoint parts of radio frequency spectrum for analysis.

7. Electromagnetic Spike Detectors. Allows for sensing lightning and other major energy discharges, and gather location and distance information.

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