How it works
What this project is testing.
An AM radio is a filter for the electromagnetic clutter around us. The antenna hears lots of stations at once, but the tuned part of the radio prefers one frequency and ignores most of the rest.
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The 3D-printed body makes the build tangible, but the science is resonance and detection. Tune the resonator to the station, then recover the audio by following the changing amplitude of the radio wave.
