It is regulated by the FCC and some frequencies can be used by anybody in the US (but they might not be suitable for a cellphone company) http://transition.fcc.

It is regulated by the FCC and some frequencies can be used by anybody in the US (but they might not be suitable for a cellphone company) http://transition.fcc.gov/oet/spectrum/table/fcctable.pdf http://transition.fcc.gov/oet/spectrum/table/fcctable.pdf ...