"the white spaces proposal creates a potential for interference to wireless microphones from unlicensed devices"....continue reading at Shure.com
From FOH online:
"NILES, Ill. – Prototype White Spaces devices were tested by FCC engineers on Saturday, Aug. 9, at FedExField just outside of Washington, D.C., at a preseason exhibition game between the National Football League’s Washington Redskins and Buffalo Bills. Starting at 10:00 a.m. and continuing through 8:00 p.m. ET, the period of observation and analysis assessed the ability of the proposed devices to detect the presence of television signals, wireless microphones and other existing wireless technologies."
continue reading at FOH online