Already familiar to readers of foreign author Sparks31 writes about conducting radio intelligence by several people directly at the scene. Clearly, specialized equipment, starting with rtl-sdr TV tuners…
Radio Intelligence: Operational Monitoring
frequency
The effect of electric current on the body, dangerous voltages, currents, frequencies, causes of electric shock.
The action of electric current on the body and electric shock can occur in the following forms: cardiac arrest or breathing during the passage of electric current through…