An important fact that has been lost in the debate about opening unused television
channels (TV white spaces) to white space devices is that the Pentagon has already
approved the unlicensed sharing of military spectrum in the 5 GHz band for devices
utilizing similar spectrum sensing technology proposed for white space devices in the TV
band. In the upper part of the 5 GHz band, wireless devices are required to dynamically
scan the airwaves and avoid operation on spectrum utilized by radar systems.
