Example: air traffic controller
DIY Magnetic Loop Antenna
DIY Magnetic Loop Antenna by Owen KF5CZO ... (Magnetic Loop Antenna) is the resonant circuit. The combination of an inductor (a wire has inductance, but a coil of wire has more) and a capacitor (two conductors separated by an insulator) in a circuit will resonate or ‘ring’ at a certain frequency. Sound vibrations at a certain frequency
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