Hey guys i was just doing a bit of poking around and i found this site. I was wondering if you lot could help me. You see i have to compare and contrast two types of similar communication. i chose AM/FM radio transmitions I know some of the bare basics like: They transmit by minipulating the radio waves (am by amplitude and fm by frequency) AM can have longer range becuase it can reflect off the ionosphere. And FM transmits in a straight line. FM has better sound quality then AM. but AM has more range. I was just curoius as to why FM and AM have different quality is it to do with the frequency range of the way the waves are minipulated? And what are some other advangates or disadvantages to using the different frequencies PS. this is the first time ive posted so if its in the wrong spot im sorry.