Long range networks -- draft

Well, I don't feel there are many significant differences mechanically for any antennas past 90Mm. I make the distinction because it's a frame of reference change; the short-range dishes function in Kerbin's SOI, and the "long" range antennas work everywhere else.

I don't mind using the terminology "medium"...I'd need to change most references to "medium or long". The only thing it would really encumber is that diagram, where I label the different antennas.