As broadcasters continued to press their case against the FCC’s white space rules at the DC Circuit court, supporters of the white space order such as Dell, Microsoft, and Motorola urged the FCC to relax the rules, claiming that overly strict protections for incumbent television and wireless microphone operations that are built into the rules will hinder the development of white space devices and lead to higher costs for consumers. Last November, the FCC adopted rules allowing the usage of unlicensed wireless devices in the digital TV white space bands with the goal of opening an alternative, low-cost platform for fixed and mobile wireless broadband services, especially in rural areas. Petitioning the FCC for reconsideration, Dell and Microsoft took issue with spectrum sensing and other interference avoidance requirements that apply to white space devices and are intended to protect wireless mic operations in the 700 MHz band. Arguing that “these extremely strict requirements are not necessary in light of the Commission’s decision to also impose geolocation capability, database querying, and channel set asides,” Dell and Microsoft warned that “requiring so many overlapping interference avoidance technologies . . . will make each consumer pay more for white space devices, such as laptops, and reduce spectrum efficiency.” Agreeing that spectrum sensing “is totally unnecessary,” the Wireless Internet Service Providers Association told the FCC that current rules for TV white spaces “impose barriers that are so substantial that wireless Internet service may never be deployed in the band.” To facilitate white space use, Motorola recommended changes in the FCC’s rules covering the maximum height of transmitting antennas and the minimum height of receive antennas, declaring, “these actions will significantly reduce the cost of deploying [white space devices] without increasing the risk of interference.” Meanwhile, as Sprint Nextel, FiberTower and the Rural Telecommunications Group urged the FCC to reconsider allocating a portion of the white space band for wireless backhaul services, the National Cable & Telecommunications Association cited a study it recently commissioned that confirms the results of earlier tests indicating that “cable operations will be subjected to harmful interference from white space devices as specified in the new rules.”