[Al Skierkiewicz]

Hugh,
The LED wall does give off a fair amount of noise. It is mostly in the form of buzz and wreaks havoc with dynamic microphones. That's why you don't see anyone speaking from behind the scorer's table on the big stage I would suspect. I have some experience with RF mics and wireless "IN EAR" monitors and have used a spectrum analyzer when checking for problems in several shows here. Most are in the UHF band now that the FCC has been involved in unlicensed wireless devices in unused TV channels. Almost everyone is using Wi-Fi to interconnect various audio interfaces and haven't had any issues. I have not seen anything in the bands I am looking at so that leads me to believe that harmonics beyond 700 MHz do not exist. Each little block connects to the one next to it to assemble a large screen. Then you tell the master-controller how many blocks wide and high and if you want it to portion the screen or simply display the entire video signal. There is a CRT monitor on the scorer's table but is an analog device as I remember. There are a variety of LCD monitors as well. Most of that stuff has a fair amount of shielding internal so I don't expect anything in 5 GHz range from any of that stuff.