AM has a much longer wavelength. AM is super simple. It is Amplitude modulation. You take a signal and multiply it by a sinewave. The issue is you need a bigge

AM has a much longer wavelength. AM is super simple. It is Amplitude modulation. You take a signal and multiply it by a sinewave. The issue is you need a bigger antenna, and probably need to block noise better since AM has lot of issues with noise.