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FCC Rejects Cheap/Fast Internet Device
Tech.Luver writes "ABC News reports that a group of technology companies including Google, Microsoft, and Dell, have failed to convince the Federal Communications Commission of the utility of high-speed internet access via television airwaves. The FCC concluded the potential to disrupt consumer image quality was too high, in a statement released Wednesday. 'The technology companies say the unlicensed and unused TV airwaves, also known as "white spaces," would make Internet service accessible and affordable, especially in rural areas and also spur innovation. However, TV broadcasters oppose usage of white spaces because they fear the device will cause interference with television programming and could cause problems with a federally mandated transition from analog to digital signals in February 2009.'"
Interesting the timing of this article given Ofcom's recent approval of Ultra Wide Band for consumer devices in the UK.
http://news.bbc.co.uk/1/hi/technology/6938941.stm
biopowered.co.uk - catalytically cracking triglycerides for home automotive use since 2008. Just say no to big oil!
Putting wireless internet on the freed-up TV channels is a particularly poor use of the spectrum. Each TV channel is only about 6 MHz wide (4.5 plus some guard space). That would accomodate maybe 50 million bits per second of service, across the propagation range of VHF and UHF, which depending on power and weather, can range from a few hundred meters to several hundred miles. If you use a few hundred watts you could cover a few square miles, but so can the current Wifi channels. Covering a large rural are is impractical as you'd need many watts of power transmitted at the user's end, and only a limited number of users could be handled.