The FCC's rules on white space devices will take effect on March 19. The rules are the first step in creating the conditions necessary for the widespread adoption of white space wireless devices, which operate in the unused slivers of spectrum in the 700 MHz band between spectrum used by broadcast TV stations. Article [1], Ruling [2]
Links:
[1] http://www.betanews.com/article/FCC_white_space_device_rules_to_take_effect_next_month/1234899242
[2] http://edocket.access.gpo.gov/2009/E9-3279.htm