I can read on wikipedia that radio waves are of frequency 3kHz-3THz.
I know that piezoelectric actuator can reach eg. 20 kHz.
What would happen if I put a small neodymium magnet on a piezoelectric actuator subjected to modulated 20kHz voltage? It would move the magnet and its magnetic field.
I know that if a magnetic field changes with time in a certain point - it creates an oscillating electric field, which also creates oscillating magnetic field. That yields radio waves.
If I put a radio receiver near such installation - would I be able to detect how is my piezo modulated by listening to the radio?