In the shadowy corners of the shortwave radio spectrum, you can often find mysterious mechanical voices counting off endless strings of numbers — in English, Czech, Russian and German … even Morse code. But who's listening? www.npr.org
Of course this applies to rf or computer cables and power cords as well. The Obama administration said it intends to nearly double the available amount of wireless communications spectrum over the next 10 years in an effort to keep up with the ever-growing demand for high-speed video and data transmission to cellphones, laptops and other mobile devices.
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September 2012
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