I think there is some confusion here mixing up the time and frequency domains. The poster above is correct that AM is achieved by multiplying the intelligence w

I think there is some confusion here mixing up the time and frequency domains. The poster above is correct that AM is achieved by multiplying the intelligence with a carrier. This changes a carrier's amplitude which must (as indicated as a Fourier series) generate sidebands, which occupy frequencies around the carrier frequency. FM is produced differently but also generates (wider) sidebands.