One of the basics of satellite design is gathering information on what is used and where it is used. You then design your satellite based on that, plus requirements of particular nations, regions etc etc.<br />It is a long involved process. Basically you need to be awake and aware of what is going on in the world of frequency usage.<br />Having said that, you obviously cannot allow for irresponsible governments allowing people like Unwired to run services that require relatively high power to operate alongside services that operate on very very low power levels.<br />The use of the frequency around the extended C-Band is nothing new. It has been around for years. It's just that no one has lobbied or licensed that frequency spectrum and reserved it for satellite operation. <br />You also have the LNB manufacturers building cheap and simple LNBs that, surprise surprise, are very wide-band and get swamped by the adjacent frequencies.<br />When Unwired started in Australia they caused a mass of problems. All broadcasters had to fit filters to their C-Band antennas in a hurry.<br />So when Fiji TV decided to go satellite C-Band and Apstar went to provide C-Band services into some area where wireless internet was working, they plainly did not do their homework.<br />Agree with Phil and that is how do the Unwired people get away with it.