More details on the FCC's testing of a device that could use former TV airwaves to offer consumers broadband access are now available. A coalition of companies including Microsoft, Dell and Google recently submitted the unit for testing, and they say the results of those tests should be available by July. A recent report (pdf) boldly suggested that every American household could see access "for as little as $10 a month, by some estimates" by using the freed spectrum. Broadcasters, however, oppose the idea -- and suggest the system would disrupt existing services.