Originally Posted by
Sallyann1234
What do you mean, IF 5g gets approved? It's been in use around the world for a couple of years!
It's far too late now to discuss this in such generalities. The potential for interaction between C band cellular and the aeronautical service just above in frequency is very well known, and discussed in great detail further up this thread.
Apologies, let me be more clear about "approved". The technology is there, the equipment is there, the equipment is being used. The use of the higher frequencies as well as the use of the "4G" frequency bands around airports is subject to "permits", which is the subject of this thread, being potentially dangerous for legacy RA and GPS based equipment. Once those permits are granted (IE administratively approved by the governments), the roll-out of the use of the higher 5G frequencies as well as 4G type frequencies around airports starts (or maybe better "continues"), without further blocking.