Automakers Ask for Reconsideration of Order on 5 GHz Interference Limits
Two major automaker groups asked the FCC to rethink parts of its March order relaxing the out-of-band emission (OOBE) limits for the operation of U-NII-3 (5.725-5.85 GHz) band devices (see 1603020064). The Association of Global Automakers and the Alliance of…
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Automobile Manufacturers filed the joint recon petition, warning of interference to dedicated short-range communications (DSRC) systems aimed at preventing accidents on the road. The higher limits would increase “by an unacceptable factor of 7,038” the level of OOBE that can occur in the 5.9 GHz band, the automakers said. “The public, as well as the members of the Global Automakers and the Alliance, will be severely harmed by the FCC’s decision,” the groups said. In the order, the FCC “decided to make accommodations in the U-NII-3 rules for all manufacturers of U-NII-3 equipment, stating that its rule changes ‘will still provide a level of interference protection to adjacent band services,’” the petition said. “However, this ‘level’ of interference protection was not evaluated or examined at all with regard to adjacent band DSRC operations, thereby undermining the automotive industry’s multi-year and multi-million dollar investment.” The petition was posted Monday in docket 13-49. Wi-Fi proponents hailed the higher emissions limits when the order was released.