United States
Full power analog television broadcasts, which operated between the 54 MHz and 806 MHz (54-72,76-88,174-216,470-608,and 614-806) television frequencies (Channels 2-69), ceased operating on June 12, 2009 per a United States digital switchover mandate. At that time, full power TV stations were required to switch to digital transmission and operate only between 54 MHz and 698 MHz. This is also the timetable that the white space coalition has set to begin offering wireless broadband services to consumers. The delay allows time for the United States Federal Communications Commission (FCC) to test the technology and make sure that it does not interfere with existing television broadcasts. Similar technologies could be used worldwide as much of the core technology is already in place.
Theatrical producers and sports franchises hoped to derail or delay the decision, arguing that their own transmissions – whether from television signals or from wireless microphones used in live music performances – could face interference from new devices that use the white spaces. However, the FCC rejected their arguments, saying enough testing has been done, and through new regulations, possible interference will be minimized.
More of the broadcast spectrum was needed for wireless broadband Internet access, and in March 2009, Massachusetts Senator John Kerry introduced a bill requiring a study of efficient use of the spectrum. Academics have studied the matter and have promoted the idea of using computing technology to capture the benefits of the white space.
Read more about this topic: White Spaces (radio), White Spaces Devices
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