Ok I seem to have a serious problem. My understanding of Bandwidth was that it is the Range of Frequencies that a Radio Receiver can let through its RLC Circuit (or known as the Bandpass Filter). I thought that The set of frequencies are such that they are larger than half the total power??? Now Quality Factor is Inversly proportional to Bandwidth. As I see it, increasing the Bandwidth would lower the Amplitude of the Resonant Frequency - hence the received quality is low????? So we started on AM & FM in School. The general idea was that Large Bandwidth meant more information (fair enough). They went on to say that increasing the Bandwidth of AM would lead to more quality. This is where I got Stumped. Now I am confused Does Bandwidth have multiple meanings or is my prior knowledge EXTREMELY Faulty??