Ages ago I read that the maximum possible bandwidth using radio waves was in the low tbps range. I've had this rattling around in my head ever since and have occasionally tried looking it up to see if it was true. I've not had much luck in that but it did prompt me to start wondering what the maximum possible amount of bps you can have given different forms of communication. I recently stumbled across this video which filled in a lot of the questions I had. Now though I'd like to understand it a little better, specifically I've been looking around trying to see if there is a simple equation that you can plug in values for frequency and get out values for max bps. The video linked has two separate equations in it that seem to point me in the right direction but they're not quite what I want. As obvious by my role here I'm not a physicist :) more than willing to learn but it's probably best to keep answers at a laymans level at first.