Yeah it is crazy that everything new is still using the 2.4ghz range. I have often wondered why they are not developing new wireless units in the 5ghz networks as they are much less congested. Funny you mention the AT system 10. That was one I eas looking at as well since it says it has three levels of diversity assurance: frequency, time, and space. Frequency Diversity sends the signal on two dynamically allocated frequencies for interference-free communication. Time Diversity sends the signal in multiple time slots to maximize immunity to multipath interference. Finally, Space Diversity uses two antennas on each transmitter and receiver to maximize signal integrity. And it will move seamlessly as needed during the performance. Kind of like the Shure GXLD system..