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WASHINGTON—NAB, in reply to comments regarding the FCC’s TV white space (TVWS) device proposed rulemaking notice, told the commission that consistent with Part 15 rules and as “a matter of law” that harmful interference from an unlicensed service must not be allowed to cause harmful interference to licensed users. In the filing, the association said it and Microsoft had worked for several months to negotiate a “set of beneficial adjustments” to the FCC’s existing rules that would allow improvement in TVWS service while protecting TV broadcasters from interference. “Unfortunately, some commenters seek to expand the scope of this proceeding into areas that have already been fully debated and where there have been no new developments that would warrant changes,” said NAB in its comments. The baseline for any adopted rule changes must be that they don’t increase the risk of harmful interference, it reiterated. The association urged the FCC to dismiss what it dubbed “extraneous proposals,” such as alternative propagation models, power increases and reduced frequency coordination requirements, because the agency “cannot conclude they will not increase the potential for harmful interference,” the filing said. PLUS: Senators Push for FCC Action on White SpacesIn opposition to the assertion of the Public Interest Spectrum Coalition (PISC) and the Wireless Internet Service Providers Association (WISPA) that television service is “overprotected” based on “free-space propagation models and worst-case assumptions” about TV receiver performance, NAB told the FCC that contour protection is the only reasonable way to protect consumer TV receivers, which operate as “hidden nodes.
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