Space Forum / Space Flight / May 2006

How does the width of a frequency band relate to the actual digital
communications bandwidth?
For instance, the Ka band satellite downlink is from 18.3-18.8 GHz.
Knowing this, how can you compute bits per second data transfer rates?

No flames plz, I'm not claiming to believe in any of the following, but
was simply just seeking some enlightened answers. :)
As you know, a couple of speculative theorists named Hauser and
Droscher have presented a paper proposing some faster-than-light