The debate over white spaces has been a contentious one, with tech companies such as Google and Microsoft pitted against all the major broadcasting companies, as well as major telecom carriers such as Verizon. Proponents of unlicensed white space use have often argued that opening up the spectrum would help bring mobile broadband to underserved regions and would help close the so-called "digital divide" between many urban and rural areas in the United States. On the other side, the National Association of Broadcasters has argued that mobile Internet devices cannot operate on unlicensed spectrum without clashing with broadcasts on nearby frequencies.
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